Division Section Title Pages - Public Higher Education ... · Division Section Title Pages ......

Illinois State University 0131152.03

SOUTHEAST CHILLED WATER PLANT ADDITIONAL CAPACITY

TABLE OF CONTENTS TOC - 1

TABLE OF CONTENTS

Division Section Title Pages

SPECIFICATIONS GROUP

Facility Services Subgroup

DIVISION 23 - HEATING VENITLATING AND AIR CONDITIONING

230100 BASIC MECHANICAL MATERIALS AND METHODS 12

230519 METERS ANG GAUGES 4

230523 VALVES FOR HVAC PIPING 9

230529 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT 9

230548 VIBRATION CONTROLS FOR HVAC 5

230553 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT 5

230593 TEST AND BALANCE 12

230716 HVAC EQUIPMENT INSULATION 4

230719 HVAC PIPING INSULATION 9

230923 HVAC INSTRUMENTATION AND CONTROLS 2

230993 SEQUENCE OF OPERATION 3

232113 HYDRONIC PIPING 10

232123 HYDRONIC PUMPS 5

232500 HVAC WATER TREATMENT 9

236416 CENTRIFUGAL WATER CHILLERS 9

236500 COOLING TOWERS 9

236500.1 WATER STORAGE TANKS 3

DIVISION 26 - ELECTRICAL

260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 4

260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 4

260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 5

260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 6

260553 IDENTIFICATION FOR ELECTRICAL SYSTEMS 5

262419 MOTOR-CONTROL CENTERS 16

END OF TABLE OF CONTENTS



BASIC MECHANICAL MATERIALS AND METHODS 230100-1

SECTION 230100 - BASIC MECHANICAL MATERIALS AND METHODS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

a. Piping materials and installation instructions common to most piping systems.

b. Grout.

c. Equipment installation requirements common to equipment sections.

d. Painting and finishing.

e. Concrete bases.

f. Supports and anchorages.

1.2 DEFINITIONS

A. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces,

pipe and duct shafts, unheated spaces immediately below roof, spaces above ceilings,

unexcavated spaces, crawlspaces, and tunnels.

B. Exposed, Interior Installations: Exposed to view indoors. Examples include finished occupied

spaces and mechanical equipment rooms.

C. Exposed, Exterior Installations: Exposed to view outdoors or subject to outdoor ambient

temperatures and weather conditions. Examples include rooftop locations.

D. Concealed, Interior Installations: Concealed from view and protected from physical contact by

building occupants. Examples include above ceilings and in duct shafts.

E. Concealed, Exterior Installations: Concealed from view and protected from weather conditions

and physical contact by building occupants but subject to outdoor ambient temperatures.

Examples include installations within unheated shelters.

F. The following are industry abbreviations for plastic materials:

1. ABS: Acrylonitrile-butadiene-styrene plastic.

2. CPVC: Chlorinated polyvinyl chloride plastic.

3. PE: Polyethylene plastic.

4. PVC: Polyvinyl chloride plastic.

G. The following are industry abbreviations for rubber materials:

1. EPDM: Ethylene-propylene-diene terpolymer rubber.

2. NBR: Acrylonitrile-butadiene rubber.




1.3 QUALITY ASSURANCE

A. Steel Support Welding: Qualify processes and operators according to AWS D1.1, "Structural

Welding Code--Steel."

B. Steel Pipe Welding: Qualify processes and operators according to ASME Boiler and Pressure

Vessel Code: Section IX, "Welding and Brazing Qualifications."

1. Comply with provisions in ASME B31 Series, "Code for Pressure Piping."

2. Certify that each welder has passed AWS qualification tests for welding processes

involved and that certification is current.

C. Electrical Characteristics for Mechanical Equipment: Equipment of higher electrical

characteristics may be furnished provided such proposed equipment is approved in writing and

connecting electrical services, circuit breakers, and conduit sizes are appropriately modified. If

minimum energy ratings or efficiencies are specified, equipment shall comply with

requirements.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping,

storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and

moisture.

B. Store plastic pipes protected from direct sunlight. Support to prevent sagging and bending.

1.5 COORDINATION

A. Arrange for pipe spaces, chases, slots, and openings in building structure during progress of

construction, to allow for mechanical installations.

B. Coordinate installation of required supporting devices and set sleeves in poured-in-place

concrete and other structural components as they are constructed.

C. Coordinate requirements for access panels and doors for mechanical items requiring access that

are concealed behind finished surfaces.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where subparagraph titles below introduce lists, the following

requirements apply for product selection:

1. Manufacturers: Subject to compliance with requirements, provide products by the

manufacturers specified.




2.2 PIPE, TUBE, AND FITTINGS

A. Refer to individual Division 15 piping Sections for pipe, tube, and fitting materials and joining

methods.

B. Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.

2.3 JOINING MATERIALS

A. Refer to individual Division 15 piping Sections for special joining materials not listed below.

B. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system

contents.

1. ASME B16.21, nonmetallic, flat, asbestos-free, 1/8-inch maximum thickness unless

thickness or specific material is indicated.

a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

2. AWWA C110, rubber, flat face, 1/8-inch thick, unless otherwise indicated; and full-face

or ring type, unless otherwise indicated.

C. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.

D. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and material recommended by piping

system manufacturer, unless otherwise indicated.

E. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to

ASTM B 813.

F. Brazing Filler Metals: AWS A5.8, BCuP Series, copper-phosphorus alloys for general-duty

brazing, unless otherwise indicated; and AWS A5.8, BAg1, silver alloy for refrigerant piping,

unless otherwise indicated.

G. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall

thickness and chemical analysis of steel pipe being welded.

H. Solvent Cements for Joining Plastic Piping:

1. ABS Piping: ASTM D 2235.

2. CPVC Piping: ASTM F 493.

3. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

4. PVC to ABS Piping Transition: ASTM D 3138.

I. Fiberglass Pipe Adhesive: As furnished or recommended by pipe manufacturer.




2.4 TRANSITION FITTINGS

A. AWWA Transition Couplings: Same size as, and with pressure rating at least equal to and with

ends compatible with, piping to be joined.

1. Available Manufacturers:

a. Cascade Waterworks Mfg. Co.

b. Dresser Industries, Inc.; DMD Div.

c. Ford Meter Box Company, Incorporated (The); Pipe Products Div.

d. JCM Industries.

e. Smith-Blair, Inc.

f. f. Viking Johnson.

2. Underground Piping NPS 1-1/2 and Smaller: Manufactured fitting or coupling.

3. Underground Piping NPS 2 and Larger: AWWA C219, metal sleeve-type coupling.

4. Aboveground Pressure Piping: Pipe fitting.

B. Plastic-to-Metal Transition Fittings: PVC one-piece fitting with manufacturer's Schedule 80

equivalent dimensions; one end with threaded brass insert, and one solvent-cement-joint end.

1. Manufacturers:

a. a. Eslon Thermoplastics.

C. Plastic-to-Metal Transition Adaptors: One-piece fitting with manufacturer's SDR 11 equivalent

dimensions; one end with threaded brass insert, and one solvent-cement-joint end.

1. Manufacturers:

a. a. Thompson Plastics, Inc.

D. Plastic-to-Metal Transition Unions: MSS SP-107, PVC four-part union. Include brass end,

solvent-cement-joint end, rubber O-ring, and union nut.

1. Manufacturers:

a. NIBCO INC.

b. b. NIBCO, Inc.; Chemtrol Div.

2.5 DIELECTRIC FITTINGS

A. Description: Combination fitting of copper alloy and ferrous materials with threaded, solder-

joint, plain, or weld-neck end connections that match piping system materials.

B. Insulating Material: Suitable for system fluid, pressure, and temperature.

a.

C. Dielectric Flanges: Factory-fabricated, companion-flange assembly, for 150- or 300-psig

minimum working pressure as required to suit system pressures.

1. Manufacturers:

a. Capitol Manufacturing Co.




b. Central Plastics Company.

c. Epco Sales, Inc.

d. d. Watts Industries, Inc.; Water Products Div.

D. Dielectric-Flange Kits: Companion-flange assembly for field assembly. Include flanges, full-

face- or ring-type neoprene or phenolic gasket, phenolic or polyethylene bolt sleeves, phenolic

washers, and steel backing washers.

1. Manufacturers:

a. Advance Products & Systems, Inc.

b. Calpico, Inc.

c. Central Plastics Company.

d. d. Pipeline Seal and Insulator, Inc.

2. Separate companion flanges and steel bolts and nuts shall have 150- or 300-psig

minimum working pressure where required to suit system pressures.

E. Dielectric Couplings: Galvanized-steel coupling with inert and noncorrosive, thermoplastic

lining; threaded ends; and 300-psig minimum working pressure at 225 deg F.

1. Manufacturers:

a. Calpico, Inc.

b. b. Lochinvar Corp.

F. Dielectric Nipples: Electroplated steel nipple with inert and noncorrosive, thermoplastic lining;

plain, threaded, or grooved ends; and 300-psig minimum working pressure at 225 deg F.

1. Manufacturers:

a. Perfection Corp.

b. Precision Plumbing Products, Inc.

c. Sioux Chief Manufacturing Co., Inc.

d. d. Victaulic Co. of America.

2.6 MECHANICAL SLEEVE SEALS

A. Description: Modular sealing element unit, designed for field assembly, to fill annular space

between pipe and sleeve.

1. Manufacturers:

a. Advance Products & Systems, Inc.

b. Calpico, Inc.

c. Metraflex Co.

d. e. Pipeline Seal and Insulator, Inc.

2. Sealing Elements: EPDM interlocking links shaped to fit surface of pipe. Include type

and number required for pipe material and size of pipe.

3. Pressure Plates: Carbon steel. Include two for each sealing element.

4. Connecting Bolts and Nuts: Carbon steel with corrosion-resistant coating of length

required to secure pressure plates to sealing elements. Include one for each sealing

element.




2.7 SLEEVES

A. Galvanized-Steel Sheet: 0.0239-inch minimum thickness; round tube closed with welded

longitudinal joint.

B. Steel Pipe: ASTM A 53, Type E, Grade B, Schedule 40, galvanized, plain ends.

C. Cast Iron: Cast or fabricated "wall pipe" equivalent to ductile-iron pressure pipe, with plain

ends and integral waterstop, unless otherwise indicated.

D. Molded PVC: Permanent, with nailing flange for attaching to wooden forms.

E. PVC Pipe: ASTM D 1785, Schedule 40.

F. Molded PE: Reusable, PE, tapered-cup shaped, and smooth-outer surface with nailing flange

for attaching to wooden forms.

2.8 ESCUTCHEONS

A. Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to closely

fit around pipe, tube, and insulation of insulated piping and an OD that completely covers

opening.

B. One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with polished chrome-plated

finish.

C. One-Piece, Cast-Brass Type: With set screw.

1. Finish: Rough brass.

D. Split-Casting, Cast-Brass Type: With concealed hinge and set screw.

1. Finish: Rough brass.

E. One-Piece, Stamped-Steel Type: With set screw and chrome-plated finish.

F. Split-Plate, Stamped-Steel Type: With exposed-rivet hinge, set screw or spring clips, and

chrome-plated finish.

G. One-Piece, Floor-Plate Type: Cast-iron floor plate.

H. Split-Casting, Floor-Plate Type: Cast brass with concealed hinge and set screw.

2.9 GROUT

A. Description: ASTM C 1107, Grade B, nonshrink and nonmetallic, dry hydraulic-cement grout.

1. Characteristics: Post-hardening, volume-adjusting, nonstaining, noncorrosive,

nongaseous, and recommended for interior and exterior applications.

2. Design Mix: 5000-psi, 28-day compressive strength.




3. Packaging: Premixed and factory packaged.

PART 3 - EXECUTION

3.1 MECHANICAL DEMOLITION

A. Disconnect, demolish, and remove mechanical systems, equipment, and components indicated

to be removed.

1. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or

plug remaining piping with same or compatible piping material.

2. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or

compatible piping material.

3. Equipment to be removed: Disconnect and cap services and remove equipment.

B. If pipe, insulation, or equipment to remain is damaged in appearance or is unserviceable,

remove damaged or unserviceable portions and replace with new products of equal capacity and

quality.

3.2 PIPING SYSTEMS - COMMON REQUIREMENTS

A. Install piping according to the following requirements and Division 15 Sections specifying

piping systems.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping

systems. Indicated locations and arrangements were used to size pipe and calculate friction

loss, expansion, pump sizing, and other design considerations. Install piping as indicated unless

deviations to layout are approved on Coordination Drawings.

C. Install piping in concealed locations, unless otherwise indicated and except in equipment rooms

and service areas.

D. Install piping indicated to be exposed and piping in equipment rooms and service areas at right

angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated

otherwise.

E. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.

F. Install piping to permit valve servicing.

G. Install piping at indicated slopes.

H. Install piping free of sags and bends.

I. Install fittings for changes in direction and branch connections.

J. Install piping to allow application of insulation.




K. Select system components with pressure rating equal to or greater than system operating

pressure.

L. Install escutcheons for penetrations of walls, ceilings, and floors according to the following:

1. New Piping:

a. Piping with Fitting or Sleeve Protruding from Wall: One-piece, deep-pattern type.

b. Insulated Piping: One-piece, stamped-steel type with spring clips.

c. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece, cast-

brass type with polished chrome-plated finish.

d. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece,

stamped-steel type.

e. Bare Piping in Unfinished Service Spaces: One-piece, cast-brass type with rough-

brass finish.

f. Bare Piping in Equipment Rooms: One-piece, cast-brass type.

g. Bare Piping at Floor Penetrations in Equipment Rooms: One-piece, floor-plate

type.

M. Sleeves are not required for core-drilled holes.

N. Permanent sleeves are not required for holes formed by removable PE sleeves.

O. Install sleeves for pipes passing through concrete and masonry walls, gypsum-board partitions,

and concrete floor and roof slabs.

1. Cut sleeves to length for mounting flush with both surfaces.

a. Exception: Extend sleeves installed in floors of mechanical equipment areas or

other wet areas 2 inches above finished floor level. Extend cast-iron sleeve fittings

below floor slab as required to secure clamping ring if ring is specified.

2. Install sleeves in new walls and slabs as new walls and slabs are constructed.

3. Install sleeves that are large enough to provide 1/4-inch annular clear space between

sleeve and pipe or pipe insulation. Use the following sleeve materials:

a. Steel Pipe Sleeves: For pipes smaller than NPS 6.

1)

4. Except for underground wall penetrations, seal annular space between sleeve and pipe or

pipe insulation, using joint sealants appropriate for size, depth, and location of joint.

Refer to Division 7 Section "Joint Sealants" for materials and installation.

P. Aboveground, Exterior-Wall Pipe Penetrations: Seal penetrations using sleeves and mechanical

sleeve seals. Select sleeve size to allow for 1-inch annular clear space between pipe and sleeve

for installing mechanical sleeve seals.

1. Install steel pipe for sleeves smaller than 6 inches in diameter.

2. Install cast-iron "wall pipes" for sleeves 6 inches and larger in diameter.




3. Mechanical Sleeve Seal Installation: Select type and number of sealing elements

required for pipe material and size. Position pipe in center of sleeve. Assemble

mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten

bolts against pressure plates that cause sealing elements to expand and make watertight

seal.

Q. Underground, Exterior-Wall Pipe Penetrations: Install cast-iron "wall pipes" for sleeves. Seal

pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch (25-mm)

annular clear space between pipe and sleeve for installing mechanical sleeve seals.

1. Mechanical Sleeve Seal Installation: Select type and number of sealing elements

required for pipe material and size. Position pipe in center of sleeve. Assemble

mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten

bolts against pressure plates that cause sealing elements to expand and make watertight

seal.

R. Verify final equipment locations for roughing-in.

S. Refer to equipment specifications in other Sections of these Specifications for roughing-in

requirements.

3.3 PIPING JOINT CONSTRUCTION

A. Join pipe and fittings according to the following requirements and Division 15 Sections

specifying piping systems.

B. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

C. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

D. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube

end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using

lead-free solder alloy complying with ASTM B 32.

E. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"

Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8.

F. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore

full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads unless dry seal

threading is specified.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.

G. Welded Joints: Construct joints according to AWS D10.12, using qualified processes and

welding operators according to Part 1 "Quality Assurance" Article.




H. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service

application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.

I. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and fittings

according to the following:

1. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent

cements.

2. PVC Pressure Piping: Join schedule number ASTM D 1785, PVC pipe and PVC socket

fittings according to ASTM D 2672. Join other-than-schedule-number PVC pipe and

socket fittings according to ASTM D 2855.

3. PVC Nonpressure Piping: Join according to ASTM D 2855.

4. PVC to ABS Nonpressure Transition Fittings: Join according to ASTM D 3138

Appendix.

J. Plastic Pressure Piping Gasketed Joints: Join according to ASTM D 3139.

K. K. Plastic Nonpressure Piping Gasketed Joints: Join according to ASTM D 3212.

L. Fiberglass Bonded Joints: Prepare pipe ends and fittings, apply adhesive, and join according to

pipe manufacturer's written instructions.

3.4 PIPING CONNECTIONS

A. Make connections according to the following, unless otherwise indicated:

1. Install unions, in piping NPS 2 and smaller, adjacent to each valve and at final connection

to each piece of equipment.

2. Install flanges, in piping NPS 2-1/2 and larger, adjacent to flanged valves and at final

connection to each piece of equipment.

3. Dry Piping Systems: Install dielectric flanges to connect piping materials of dissimilar

metals.

4. Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping

materials of dissimilar metals.

3.5 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS

A. Install equipment to allow maximum possible headroom unless specific mounting heights are

not indicated.

B. Install equipment level and plumb, parallel and perpendicular to other building systems and

components in exposed interior spaces, unless otherwise indicated.

C. Install mechanical equipment to facilitate service, maintenance, and repair or replacement of

components. Connect equipment for ease of disconnecting, with minimum interference to other

installations. Extend grease fittings to accessible locations.

D. Install equipment to allow right of way for piping installed at required slope.




3.6 PAINTING

A. Painting of mechanical systems, equipment, and components is specified in Division 9 Section.

B. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and

procedures to match original factory finish.

3.7 CONCRETE BASES

A. Concrete Bases: Anchor equipment to concrete base according to equipment manufacturer's

written instructions and according to seismic codes at Project.

1. Construct concrete bases of dimensions indicated, but not less than 4 inches larger in both

directions than supported unit.

2. Install dowel rods to connect concrete base to concrete floor. Unless otherwise indicated,

install dowel rods on 18-inch centers around the full perimeter of the base.

3. Install epoxy-coated anchor bolts for supported equipment that extend through concrete

base, and anchor into structural concrete floor.

4. Place and secure anchorage devices. Use supported equipment manufacturer's setting

drawings, templates, diagrams, instructions, and directions furnished with items to be

embedded.

5. Install anchor bolts to elevations required for proper attachment to supported equipment.

6. Install anchor bolts according to anchor-bolt manufacturer's written instructions.

7. Use 3000-psi, 28-day compressive-strength concrete and reinforcement as specified in

Division 3 Section "Cast-in-Place Concrete."

3.8 ERECTION OF METAL SUPPORTS AND ANCHORAGES

A. Refer to Division 5 Section "Metal Fabrications" for structural steel.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation

to support and anchor mechanical materials and equipment.

C. Field Welding: Comply with AWS D1.1.

3.9 ERECTION OF WOOD SUPPORTS AND ANCHORAGES

A. Cut, fit, and place wood grounds, nailers, blocking, and anchorages to support, and anchor

mechanical materials and equipment.

B. Select fastener sizes that will not penetrate members if opposite side will be exposed to view or

will receive finish materials. Tighten connections between members. Install fasteners without

splitting wood members.

C. Attach to substrates as required to support applied loads.




3.10 GROUTING

A. Mix and install grout for mechanical equipment base bearing surfaces, pump and other

equipment base plates, and anchors.

B. Clean surfaces that will come into contact with grout.

C. Provide forms as required for placement of grout.

D. Avoid air entrapment during placement of grout.

E. Place grout, completely filling equipment bases.

F. Place grout on concrete bases and provide smooth bearing surface for equipment.

G. Place grout around anchors.

H. Cure placed grout.

END OF SECTION 230100



METERS AND GAGES FOR HVAC PIPING 230519-1

SECTION 230519 - METERS AND GAUGES

PART 1 - GENERAL

1.1 SUMMARY


1. Liquid-in-glass thermometers.

2. Thermowells.

3. Dial-type pressure gages.

4. Gage attachments.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Wiring Diagrams: For power, signal, and control wiring.

1.3 INFORMATIONAL SUBMITTALS

A. Product certificates.

1.4 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to

product selection:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the


2.2 METAL-CASE, LIQUID-IN-GLASS THERMOMETERS

A. Manufacturers:

1. Trerice, H. O. Co.

2. Weiss Instruments, Inc.




3. Weksler Instruments Operating Unit; Dresser Industries; Instrument Div.

B. Case: Brass, 9 inches long.

C. Tube: Red reading, organic-liquid filled, with magnifying lens.

D. Tube Background: Satin-faced, nonreflective aluminum with permanently etched scale

markings.

E. Window: Glass.

F. Connector: Adjustable type, 180 degrees in vertical plane, 360 degrees in horizontal plane, with

locking device.

G. Stem: Copper-plated steel, aluminum, or brass for thermowell installation and of length to suit

installation.

H. Accuracy: Plus or minus 1 percent of range or plus or minus 1 scale division to maximum of

1.5 percent of range.

2.3 THERMOWELLS

A. Available Manufacturers:




B. Manufacturers: Same as manufacturer of thermometer being used.

C. Description: Pressure-tight, socket-type metal fitting made for insertion into piping and of type,

diameter, and length required to hold thermometer.

2.4 PRESSURE GAGES

A. Manufacturers:




B. Direct-Mounting, Dial-Type Pressure Gages: Indicating-dial type complying with

ASME B40.100.

1. Case: Liquid-filled type, cast aluminum, 4-1/2-inch diameter.

2. Pressure-Element Assembly: Bourdon tube, unless otherwise indicated.

3. Pressure Connection: Brass, NPS 1/4, bottom-outlet type unless back-outlet type is

indicated.

4. Movement: Mechanical, with link to pressure element and connection to pointer.

5. Dial: Satin-faced, nonreflective aluminum with permanently etched scale markings.




6. Pointer: Red metal.

7. Window: Glass.

8. Ring: Metal.

9. Accuracy: Grade A, plus or minus 1 percent of middle half scale.

10. Vacuum-Pressure Range: 30-in. Hg of vacuum to 15 psig of pressure.

11. Range for Fluids under Pressure: Two times operating pressure.

2.5 TEST PLUGS


1. Flow Design, Inc.

2. Peterson Equipment Co., Inc.


4. Watts Industries, Inc.; Water Products Div.

B. Description: Corrosion-resistant brass or stainless-steel body with core inserts and gasketed and

threaded cap, with extended stem for units to be installed in insulated piping.

C. Minimum Pressure and Temperature Rating: 500 psig at 200 deg F .

D. Core Inserts: One or two self-sealing rubber valves.

1. Insert material for air, water, oil, or gas service at 20 to 200 deg F shall be CR.

2. Insert material for air or water service at minus 30 to plus 275 deg F shall be EPDM.

E. Test Kit: Furnish one test kit(s) containing one pressure gage and adaptor, two thermometer(s),

and carrying case. Pressure gage, adapter probes, and thermometer sensing elements shall be of

diameter to fit test plugs and of length to project into piping.

1. Pressure Gage: Small bourdon-tube insertion type with 2- to 3-inch- diameter dial and

probe. Dial range shall be 0 to 200 psig.

2. Low-Range Thermometer: Small bimetallic insertion type with 1- to 2-inch- diameter

dial and tapered-end sensing element. Dial ranges shall be 25 to 125 deg F.

3. High-Range Thermometer: Small bimetallic insertion type with 1- to 2-inch- diameter

dial and tapered-end sensing element. Dial ranges shall be 0 to 220 deg F.

4. Carrying case shall have formed instrument padding.

PART 3 - EXECUTION

3.1 THERMOMETER APPLICATIONS

A. Install liquid-in-glass thermometers in the following locations:

1. Inlet and outlet of each hydronic chiller.

B. Provide the following temperature ranges for thermometers:

1. Condenser Water: 0 to 160 deg F, with 2-degree scale divisions.




2. Chilled Water: 0 to 100 deg F, with 2-degree scale divisions.

3.2 GAGE APPLICATIONS

A. Install dry-case-type pressure gages at chilled- and condenser-water inlets and outlets of

chillers.

B. Install liquid-filled-case-type pressure gages at suction and discharge of each pump.

3.3 INSTALLATIONS

A. Install direct-mounting thermometers and adjust vertical and tilted positions.

B. Install remote-mounting dial thermometers on panel, with tubing connecting panel and

thermometer bulb supported to prevent kinks. Use minimum tubing length.

C. Install thermowells with socket extending to center of pipe and in vertical position in piping tees

where thermometers are indicated.

D. Install direct-mounting pressure gages in piping tees with pressure gage located on pipe at most

readable position.

E. Install needle-valve and snubber fitting in piping for each pressure gage for fluids (except

steam).

F. Install test plugs in tees in piping.

3.4 CONNECTIONS

A. Install meters and gages adjacent to machines and equipment to allow service and maintenance

for meters, gages, machines, and equipment.

3.5 ADJUSTING

A. Calibrate meters according to manufacturer's written instructions, after installation.

B. Adjust faces of meters and gages to proper angle for best visibility.




VALVES FOR HVAC PIPING 230523-1

SECTION 230523 – VALVES FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Copper alloy ball valves.

2. Ferrous alloy ball valves.

3. Ferrous alloy butterfly valves.

4. High-pressure butterfly valves.

5. Bronze check valves.

6. Gray iron swing check valves.

7. Ferrous alloy wafer check valves.

8. Spring loaded, lift disc check valves.

9. Bronze globe valves.

10. Cast iron globe valves.

11. Chain wheel actuators.


A. Product Data: For each type of valve.

1.3 DEFINITIONS

A. The following are standard abbreviations for valves:

1. CWP: Cold working pressure.

2. EPDM: Ethylene-propylene-diene terpolymer rubber.

3. NBR: Acrylonitrile-butadiene rubber.

4. PTFE: Polytetrafluoroethylene plastic.

5. SWP: Steam working pressure.

6. TFE: Tetrafluoroethylene plastic.


A. ASME Compliance: ASME B31.9 for building services piping valves.

B. ASME Compliance for Ferrous Valves: ASME B16.10 and ASME B16.34 for dimension and

design criteria.


A. Prepare valves for shipping as follows:




1. Protect internal parts against rust and corrosion.

2. Protect threads, flange faces, grooves, and weld ends.

3. Set angle, gate, and globe valves closed to prevent rattling.

4. Set ball and plug valves open to minimize exposure of functional surfaces.

5. Set butterfly valves closed or slightly open.

6. Block check valves in either closed or open position.

B. Use the following precautions during storage:

1. Maintain valve end protection.

2. Store valves indoors and maintain at higher than ambient dew-point temperature. If

outdoor storage is necessary, store valves off the ground in watertight enclosures.

C. Use sling to handle large valves; rig sling to avoid damage to exposed parts. Do not use

handwheels or stems as lifting or rigging points.

PART 2 - PRODUCTS

2.1 MANUFACTURERS



1. Available Manufacturers: Subject to compliance with requirements, manufacturers

offering products that may be incorporated into the Work include, but are not limited to,

the manufacturers specified.

2.2 VALVES, GENERAL

A. Refer to Part 3 "Valve Applications" Article for applications of valves.

B. Bronze Valves: NPS 2 and smaller with threaded ends, unless otherwise indicated.

C. Ferrous Valves: NPS 2-1/2 and larger with flanged ends, unless otherwise indicated.

D. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system

pressures and temperatures.

E. Valve Sizes: Same as upstream pipe, unless otherwise indicated.

F. Valve Actuators:

1. Chainwheel: For attachment to valves, of size and mounting height, as indicated in the

"Valve Installation" Article in Part 3.

2. Gear Drive: For quarter-turn valves NPS 4 and larger.

3. Handwheel: For valves other than quarter-turn types.

4. Lever Handle: For quarter-turn valves NPS 6 and smaller, except plug valves.

5. Wrench: For plug valves with square heads. Furnish Owner with 1 wrench for every 10

plug valves, for each size square plug head.




G. Extended Valve Stems: On insulated valves.

H. Valve Flanges: ASME B16.1 for cast-iron valves, ASME B16.5 for steel valves, and

ASME B16.24 for bronze valves.

I. Valve Grooved Ends: AWWA C606.

J. Solder Joint: With sockets according to ASME B16.18.

1. Caution: Use solder with melting point below 840 deg F for angle, check, gate, and

globe valves; below 421 deg F for ball valves.

K. Threaded: With threads according to ASME B1.20.1.

L. Valve Bypass and Drain Connections: MSS SP-45.

2.3 COPPER-ALLOY BALL VALVES


1. One-Piece, Copper-Alloy Ball Valves:

a. Crane Co., Stockham Div.

b. NIBCO INC.

c. Watts.

B. Copper-Alloy Ball Valves, General: MSS SP-110.

C. One-Piece, Copper-Alloy Ball Valves: Brass or bronze body with chrome-plated bronze ball,

PTFE or TFE seats, and 600-psig CWP rating.

2.4 FERROUS-ALLOY BUTTERFLY VALVES


1. Single Flange, Ferrous-Alloy Butterfly Valves:

a. Crane Co., Centerline.

b. Crane Co., Stockham Div.

c. Milwaukee Valve Company.

2. Grooved-End, Ductile-Iron Butterfly Valves:

a. Milwaukee Valve Company.

b. NIBCO INC.

c. Victaulic Co. of America.

B. Single flange, 150-psig CWP Rating, Ferrous-Alloy Butterfly Valves: Wafer-lug type with one-

or two-piece stem.




C. Grooved-End, 175-psig CWP Rating, Ferrous-Alloy Butterfly Valves: Ductile-iron or steel

body with grooved or shouldered ends.

2.5 FERROUS-ALLOY BALL VALVES


1. One-Piece, Copper-Alloy Ball Valves:

a. Crane Co., Stockham Div.

b. Milwaukee Valve Company.

c. NIBCO INC.

B. Ferrous-Alloy Ball Valves, General: MSS SP-72 with flanged ends.

C. Ferrous-Alloy Ball Valves: Class 150, full port.

2.6 HIGH-PRESSURE BUTTERFLY VALVES


B. Manufacturers:

1. Crane Co., Flowseal.

2. Grinnell Corporation.

3. Tyco International, Ltd.; Tyco Valves & Controls.

C. High-Pressure Butterfly Valves, General: MSS SP-68.

D. Single-Flange, Class 150, High-Pressure Butterfly Valves: Wafer-lug type.

2.7 BRONZE CHECK VALVES


1. Type 2, Bronze, Horizontal Lift Check Valves with Nonmetallic Disc:

a. Crane Co.; Crane Valve Group; Crane Valves.

b. Crane Co.; Crane Valve Group; Jenkins Valves.

c. Crane Co.; Crane Valve Group; Stockham Div.

2. Type 2, Bronze, Vertical Lift Check Valves with Nonmetallic Disc:

a. Grinnell Corporation.

b. Kitz Corporation of America.


3. Type 4, Bronze, Swing Check Valves with Nonmetallic Disc:




a. Crane co., Stockham Div.


c. NIBCO INC.

B. Bronze Check Valves, General: MSS SP-80.

C. Type 2, Class 150, Bronze, Horizontal Lift Check Valves: Bronze body with nonmetallic disc

and bronze seat.

D. Type 2, Class 150, Bronze, Vertical Lift Check Valves: Bronze body with nonmetallic disc and

bronze seat.

E. Type 4, Class 150, Bronze, Swing Check Valves: Bronze body with nonmetallic disc and

bronze seat.

2.8 GRAY-IRON SWING CHECK VALVES


1. Type II, Gray-Iron Swing Check Valves with Composition to Metal Seats:


b. Crane Co.; Crane Valve Group; Stockham Div.

c. Watts Industries, Inc.; Water Products Div.

2. Grooved-End, Ductile-Iron Swing Check Valves:


b. Mueller Co.

c. Victaulic Co. of America.

B. Gray-Iron Swing Check Valves, General: MSS SP-71.

C. Type II, Class 125, gray-iron, swing check valves with composition to metal seats.

D. 175-psig CWP Rating, Grooved-End, Swing Check Valves: Ductile-iron body with grooved or

shouldered ends.

2.9 FERROUS-ALLOY WAFER CHECK VALVES


1. Dual-Plate, Ferrous-Alloy, Wafer-Lug Check Valves:


b. NIBCO Inc.

c. Watts Industries Inc.

B. Ferrous-Alloy Wafer Check Valves, General: API 594, spring loaded.




C. Dual-Plate, Class 125 or 150, Ferrous-Alloy, Wafer-Lug Check Valves: Single-flange body.

2.10 SPRING-LOADED, LIFT-DISC CHECK VALVES


1. Type II, Compact-Wafer, Lift-Disc Check Valves:



c. NIBCO INC.

2. Type IV, Threaded Lift-Disc Check Valves:



c. NIBCO INC.

B. Lift-Disc Check Valves, General: FCI 74-1, with spring-loaded bronze or alloy disc and bronze

or alloy seat.

C. Type II, Class 125, Compact-Wafer, Lift-Disc Check Valves: Compact-wafer style with cast-

iron shell with diameter made to fit within bolt circle.

D. Type IV, Class 150, Threaded Lift-Disc Check Valves: Threaded style with bronze shell and

threaded ends.

2.11 BRONZE GLOBE VALVES


1. Type 2, Bronze Globe Valves with Nonmetallic Disc:

a. Crane Co., Crane Valves.



d. NIBCO INC.

B. Bronze Globe Valves, General: MSS SP-80, with ferrous-alloy handwheel.

C. Type 2, Class 150, Bronze Globe Valves: Bronze body with PTFE or TFE disc and union-ring

bonnet.

2.12 CAST-IRON GLOBE VALVES


1. Type I, Cast-Iron Globe Valves with Metal Seats:




a. Crane Co., Crane Valves.



d. NIBCO INC.

B. Cast-Iron Globe Valves, General: MSS SP-85.

C. Type I, Class 125, Cast-Iron Globe Valves: Gray-iron body with bronze seats.

2.13 CHAINWHEEL ACTUATORS


1. Babbitt Steam Specialty Co.

2. Roto Hammer Industries, Inc.

B. Description: Valve actuation assembly with sprocket rim, brackets, and chain.

1. Sprocket Rim with Chain Guides: Ductile iron of type and size required for valve.

Include zinc coating.

2. Brackets: Type, number, size, and fasteners required to mount actuator on valve.

3. Chain: Hot-dip, galvanized steel of size required to fit sprocket rim.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine piping system for compliance with requirements for installation tolerances and other

conditions affecting performance.

1. Proceed with installation only after unsatisfactory conditions have been corrected.

B. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove

special packing materials, such as blocks, used to prevent disc movement during shipping and

handling.

C. Operate valves in positions from fully open to fully closed. Examine guides and seats made

accessible by such operations.

D. Examine threads on valve and mating pipe for form and cleanliness.

E. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper

size, length, and material. Verify that gasket is of proper size, that its material composition is

suitable for service, and that it is free from defects and damage.

F. Do not attempt to repair defective valves; replace with new valves.




3.2 VALVE APPLICATIONS

A. Refer to piping Sections for specific valve applications. If valve applications are not indicated,

use the following:

1. Shutoff Service: Ball, butterfly valves.

2. Throttling Service: Angle, ball, butterfly, or globe valves.

3. Pump Discharge: Spring-loaded, lift-disc check valves.

B. If valves with specified SWP classes or CWP ratings are not available, the same types of valves

with higher SWP class or CWP ratings may be substituted.

C. Chilled-Water Piping: Use the following types of valves:

1. Ball Valves, NPS 2 and Smaller: One-piece, 600-psig CWP rating, copper alloy.

2. Ball Valves, NPS 2-1/2 and Larger: Class 150, ferrous alloy.

3. Butterfly Valves, NPS 2-1/2 and Larger: Single Flanged, 150-psig CWP rating, ferrous

alloy, with EPDM liner.

4. Grooved-End, Ductile-Iron Butterfly Valves, NPS 2-1/2 and Larger: 175-psig CWP

rating.

5. Lift Check Valves, NPS 2 and Smaller: Type 2, Class 150, horizontal or vertical,

bronze.

6. Swing Check Valves, NPS 2 and Smaller: Type 4, Class 150, bronze.

7. Swing Check Valves, NPS 2-1/2 and Larger: Type II, Class 250, gray iron.

8. Grooved-End, Ductile-Iron, Swing Check Valves, NPS 2-1/2 and Larger: 175-psig

CWP rating.

9. Spring-Loaded, Lift-Disc Check Valves, NPS 2 and Smaller: Type IV, Class 150.

10. Spring-Loaded, Lift-Disc Check Valves, NPS 2-1/2 and Larger: Type II, Class 125, cast

iron.

D. Condenser Water Piping: Use the following types of valves:

1. Ball Valves, NPS 2 and Smaller: One-piece, 600-psig CWP rating, copper alloy.

2. Ball Valves, NPS 2-1/2 and Larger: Class 150, ferrous alloy.

3. Butterfly Valves, NPS 2-1/2 and Larger: Single Flanged, 150-psig CWP rating, ferrous

alloy, with EPDM liner.

4. Lift Check Valves, NPS 2 and Smaller: Type 2, Class 150, horizontal or vertical,

bronze.

5. Swing Check Valves, NPS 2 and Smaller: Type 4, Class 150, bronze.

6. Swing Check Valves, NPS 2-1/2 and Larger: Type II, Class 250, gray iron.

7. Spring-Loaded, Lift-Disc Check Valves, NPS 2 and Smaller: Type IV, Class 150.

8. Spring-Loaded, Lift-Disc Check Valves, NPS 2-1/2 and Larger: Type II, Class 125,

cast iron.

E. Select valves, except wafer and flangeless types, with the following end connections:

1. For Copper Tubing, NPS 2 and Smaller: Solder-joint or threaded ends.

2. For Steel Piping, NPS 2 and Smaller: Threaded ends.

3. For Steel Piping, NPS 2-1/2 and Larger: Flanged ends.

4. For Grooved-End, Copper Tubing and Steel Piping: Valve ends may be grooved.




3.3 VALVE INSTALLATION

A. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate

general arrangement of piping, fittings, and specialties.

B. Install valves with unions or flanges at each piece of equipment arranged to allow service,

maintenance, and equipment removal without system shutdown.

C. Locate valves for easy access and provide separate support where necessary.

D. Install valves in horizontal piping with stem at or above center of pipe.

E. Install valves in position to allow full stem movement.

F. Install chainwheel operators on valves NPS 4 and larger and more than 96 inches above floor.

Extend chains to 60 inches above finished floor elevation.

G. Install check valves for proper direction of flow and as follows:

1. Swing Check Valves: In horizontal position with hinge pin level.

2. Dual-Plate Check Valves: In horizontal or vertical position, between flanges.

3. Lift Check Valves: With stem upright and plumb.

3.4 JOINT CONSTRUCTION

A. Refer to Division 23 Section "Basic Mechanical Materials and Methods" for basic piping joint

construction.

B. Grooved Joints: Assemble joints with keyed coupling housing, gasket, lubricant, and bolts

according to coupling and fitting manufacturer's written instructions.

C. Soldered Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead-free-

alloy solder; and ASTM B 828 procedure, unless otherwise indicated.

3.5 ADJUSTING

A. Adjust or replace valve packing after piping systems have been tested and put into service but

before final adjusting and balancing. Replace valves if persistent leaking occurs.




HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT 230529-1

SECTION 230529 – HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY


1. Metal pipe hangers and supports.

2. Trapeze pipe hangers.

3. Thermal-hanger shield inserts.

4. Fastener systems.

5. Equipment supports.

1.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design trapeze pipe hangers and equipment supports, including

comprehensive engineering analysis by a qualified professional engineer, using performance

requirements and design criteria indicated.

B. Structural Performance: Hangers and supports for HVAC piping and equipment shall withstand

the effects of gravity loads and stresses within limits and under conditions indicated according

to ASCE/SEI 7.

1. Design supports for multiple pipes capable of supporting combined weight of supported

systems, system contents, and test water.



B. Shop Drawings: Show fabrication and installation details and include calculations for the

following; include Product Data for components:

1. Trapeze pipe hangers.

2. Equipment supports.

C. Delegated-Design Submittal: For trapeze hangers indicated to comply with performance

requirements and design criteria, including analysis data signed and sealed by the qualified

professional engineer responsible for their preparation.


A. Welding certificates.





A. Structural Steel Welding Qualifications: Qualify procedures and personnel according to

AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Pipe Welding Qualifications: Qualify procedures and operators according to ASME Boiler and

Pressure Vessel Code.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


product selection:




2.2 STEEL PIPE HANGERS AND SUPPORTS

A. Description: MSS SP-58, Types 1 through 58, factory-fabricated components. Refer to Part 3

"Hanger and Support Applications" Article for where to use specific hanger and support types.

B. Manufacturers:

1. B-Line Systems, Inc.; a division of Cooper Industries.

2. ERICO/Michigan Hanger Co.

3. Grinnell Corp.

4. National Pipe Hanger Corporation.

C. Galvanized, Metallic Coatings: Pregalvanized or hot dipped.

D. Nonmetallic Coatings: Plastic coating, jacket, or liner.

E. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion for support of

bearing surface of piping.

2.3 TRAPEZE PIPE HANGERS

A. Description: MSS SP-69, Type 59, shop- or field-fabricated pipe-support assembly made from

structural-steel shapes with MSS SP-58 hanger rods, nuts, saddles, and U-bolts.

2.4 METAL FRAMING SYSTEMS

A. Description: MFMA-3, shop- or field-fabricated pipe-support assembly made of steel channels

and other components.




B. Manufacturers:

1. B-Line Systems, Inc.; a division of Cooper Industries.

2. ERICO/Michigan Hanger Co.; ERISTRUT Div.

3. Power-Strut Div.; Tyco International, Ltd.

4. Thomas & Betts Corporation.

5. Unistrut Corp.; Tyco International, Ltd.

C. Coatings: Manufacturer's standard finish, unless bare metal surfaces are indicated.

D. Nonmetallic Coatings: Plastic coating, jacket, or liner.

2.5 THERMAL-HANGER SHIELD INSERTS

A. Description: 100-psig- minimum, compressive-strength insulation insert encased in sheet metal

shield.

B. Manufacturers:

1. Carpenter & Paterson, Inc.

2. ERICO/Michigan Hanger Co.

3. PHS Industries, Inc.

4. Pipe Shields, Inc.

5. Rilco Manufacturing Company, Inc.

6. Value Engineered Products, Inc.

7. Cooper B-line.

C. For Trapeze or Clamped Systems: Insert and shield shall cover entire circumference of pipe.

D. For Clevis or Band Hangers: Insert and shield shall cover lower 180 degrees of pipe.

E. Insert Length: Extend 2 inches beyond sheet metal shield for piping operating below ambient

air temperature.

2.6 FASTENER SYSTEMS

A. Mechanical-Expansion Anchors: Insert-wedge-type zinc-coated steel, for use in hardened

portland cement concrete with pull-out, tension, and shear capacities appropriate for supported

loads and building materials where used.

1. Manufacturers:

a. B-Line Systems, Inc.; a division of Cooper Industries.

b. Empire Industries, Inc.

c. Hilti, Inc.

d. ITW Ramset/Red Head.

e. MKT Fastening, LLC.

f. Powers Fasteners.




2.7 EQUIPMENT SUPPORTS

A. Description: Welded, shop- or field-fabricated equipment support made from structural-steel

shapes.

2.8 MISCELLANEOUS MATERIALS

A. Structural Steel: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized.

B. Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and

nonmetallic grout; suitable for interior and exterior applications.

1. Properties: Nonstaining, noncorrosive, and nongaseous.

2. Design Mix: 5000-psi, 28-day compressive strength.

PART 3 - EXECUTION

3.1 HANGER AND SUPPORT APPLICATIONS

A. Specific hanger and support requirements are specified in Sections specifying piping systems

and equipment.

B. Comply with MSS SP-69 for pipe hanger selections and applications that are not specified in

piping system Sections.

C. Use hangers and supports with galvanized, metallic coatings for piping and equipment that will

not have field-applied finish.

D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in

direct contact with copper tubing.

E. Use padded hangers for piping that is subject to scratching.

F. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in

piping system Sections, install the following types:

1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or

insulated stationary pipes, NPS 1/2 to NPS 30.

2. Carbon- or Alloy-Steel, Double-Bolt Pipe Clamps (MSS Type 3): For suspension of

pipes, NPS 3/4 to NPS 24, requiring clamp flexibility and up to 4 inches of insulation.

3. Steel Pipe Clamps (MSS Type 4): For suspension of cold and hot pipes, NPS 1/2 to

NPS 24, if little or no insulation is required.

4. U-Bolts (MSS Type 24): For support of heavy pipes, NPS 1/2 to NPS 30.

5. Pipe Stanchion Saddles (MSS Type 37): For support of pipes, NPS 4 to NPS 36, with

steel pipe base stanchion support and cast-iron floor flange and with U-bolt to retain pipe.

6. Adjustable Pipe Saddle Supports (MSS Type 38): For stanchion-type support for pipes,

NPS 2-1/2 to NPS 36, if vertical adjustment is required, with steel pipe base stanchion

support and cast-iron floor flange.




7. Single Pipe Rolls (MSS Type 41): For suspension of pipes, NPS 1 to NPS 30, from 2

rods if longitudinal movement caused by expansion and contraction might occur.

8. Adjustable Roller Hangers (MSS Type 43): For suspension of pipes, NPS 2-1/2 to

NPS 20, from single rod if horizontal movement caused by expansion and contraction

might occur.

9. Complete Pipe Rolls (MSS Type 44): For support of pipes, NPS 2 to NPS 42, if

longitudinal movement caused by expansion and contraction might occur but vertical

adjustment is not necessary.

10. Adjustable Pipe Roll and Base Units (MSS Type 46): For support of pipes, NPS 2 to

NPS 30, if vertical and lateral adjustment during installation might be required in addition

to expansion and contraction.

G. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system

Sections, install the following types:

1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers, NPS 3/4 to

NPS 20.

2. Carbon- or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers,

NPS 3/4 to NPS 20, if longer ends are required for riser clamps.

H. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system


1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads.

2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations.

3. Swivel Turnbuckles (MSS Type 15): For use with MSS Type 11, split pipe rings.

4. Malleable-Iron Sockets (MSS Type 16): For attaching hanger rods to various types of

building attachments.

5. Steel Weldless Eye Nuts (MSS Type 17): For 120 to 450 deg F piping installations.

I. Building Attachments: Unless otherwise indicated and except as specified in piping system


1. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar-joist

construction to attach to top flange of structural shape.

2. Side-Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams,

channels, or angles.

3. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams.

4. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads

are considerable and rod sizes are large.

5. C-Clamps (MSS Type 23): For structural shapes.

6. Steel-Beam Clamps with Eye Nuts (MSS Type 28): For attaching to bottom of steel I-

beams for heavy loads.

7. Welded-Steel Brackets: For support of pipes from below, or for suspending from above

by using clip and rod. Use one of the following for indicated loads:

a. Light (MSS Type 31): 750 lb.

b. Medium (MSS Type 32): 1500 lb.

c. Heavy (MSS Type 33): 3000 lb.

8. Side-Beam Brackets (MSS Type 34): For sides of steel or wooden beams.




9. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required.

10. Horizontal Travelers (MSS Type 58): For supporting piping systems subject to linear

horizontal movement where headroom is limited.

J. Saddles and Shields: Unless otherwise indicated and except as specified in piping system


1. Steel Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with

insulation that matches adjoining insulation.

2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer

to prevent crushing insulation.

3. Thermal-Hanger Shield Inserts: For supporting insulated pipe.

K. Spring Hangers and Supports: Unless otherwise indicated and except as specified in piping

system Sections, install the following types:

1. Spring Cushions (MSS Type 48): For light loads if vertical movement does not exceed

1-1/4 inches.

2. Spring-Cushion Roll Hangers (MSS Type 49): For equipping Type 41 roll hanger with

springs.

3. Variable-Spring Hangers (MSS Type 51): Preset to indicated load and limit variability

factor to 25 percent to absorb expansion and contraction of piping system from hanger.

4. Variable-Spring Base Supports (MSS Type 52): Preset to indicated load and limit

variability factor to 25 percent to absorb expansion and contraction of piping system from

base support.

L. Comply with MSS SP-69 for trapeze pipe hanger selections and applications that are not

specified in piping system Sections.

M. Comply with MFMA-102 for metal framing system selections and applications that are not

specified in piping system Sections.

N. Use mechanical-expansion anchors instead of building attachments where required in concrete

construction.

3.2 HANGER AND SUPPORT INSTALLATION

A. Steel Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers,

supports, clamps, and attachments as required to properly support piping from building

structure.

B. Trapeze Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for

grouping of parallel runs of horizontal piping and support together on field-fabricated trapeze

pipe hangers.

1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or

install intermediate supports for smaller diameter pipes as specified above for individual

pipe hangers.

2. Field fabricate from ASTM A 36/A 36M, steel shapes selected for loads being supported.

Weld steel according to AWS D1.1.




C. Metal Framing System Installation: Arrange for grouping of parallel runs of piping and support

together on field-assembled metal framing systems.

D. Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping.

E. Fastener System Installation:

1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less

than 4 inches thick in concrete after concrete is placed and completely cured. Use

operators that are licensed by powder-actuated tool manufacturer. Install fasteners

according to powder-actuated tool manufacturer's operating manual.

2. Install mechanical-expansion anchors in concrete after concrete is placed and completely

cured. Install fasteners according to manufacturer's written instructions.

F. Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and

other accessories.

G. Equipment Support Installation: Fabricate from welded-structural-steel shapes.

H. Install hangers and supports to allow controlled thermal and seismic movement of piping

systems, to permit freedom of movement between pipe anchors, and to facilitate action of

expansion joints, expansion loops, expansion bends, and similar units.

I. Install lateral bracing with pipe hangers and supports to prevent swaying.

J. Install building attachments within concrete slabs or attach to structural steel. Install additional

attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-1/2 and larger

and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten

inserts to forms and install reinforcing bars through openings at top of inserts.

K. Load Distribution: Install hangers and supports so piping live and dead loads and stresses from

movement will not be transmitted to connected equipment.

L. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and so maximum

pipe deflections allowed by ASME B31.1 (for power piping) and ASME B31.9 (for building

services piping) are not exceeded.

M. Insulated Piping: Comply with the following:

1. Attach clamps and spacers to piping.

a. Piping Operating above Ambient Air Temperature: Clamp may project through

insulation.

b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield

insert with clamp sized to match OD of insert.

c. Do not exceed pipe stress limits according to ASME B31.1 for power piping and

ASME B31.9 for building services piping.

2. Install MSS SP-58, Type 39, protection saddles if insulation without vapor barrier is

indicated. Fill interior voids with insulation that matches adjoining insulation.




a. Option: Thermal-hanger shield inserts may be used. Include steel weight-

distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.

3. Install MSS SP-58, Type 40, protective shields on cold piping with vapor barrier. Shields

shall span an arc of 180 degrees.

a. Option: Thermal-hanger shield inserts may be used. Include steel weight-

distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.

4. Shield Dimensions for Pipe: Not less than the following:

a. NPS 1/4 to NPS 3-1/2: 12 inches long and 0.048 inch thick.

b. NPS 4: 12 inches long and 0.06 inch thick.

c. NPS 5 and NPS 6: 18 inches long and 0.06 inch thick.

d. NPS 8 to NPS 14: 24 inches long and 0.075 inch thick.

e. NPS 16 to NPS 24: 24 inches long and 0.105 inch thick.

5. Pipes NPS 8 and Larger: Include wood inserts.

6. Insert Material: Length at least as long as protective shield.

7. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation.

3.3 EQUIPMENT SUPPORTS

A. Fabricate structural-steel stands to suspend equipment from structure overhead or to support

equipment above floor.

B. Grouting: Place grout under supports for equipment and make smooth bearing surface.

C. Provide lateral bracing, to prevent swaying, for equipment supports.

3.4 METAL FABRICATIONS

A. Cut, drill, and fit miscellaneous metal fabrications for trapeze pipe hangers and equipment

supports.

B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be

shop welded because of shipping size limitations.

C. Field Welding: Comply with AWS D1.1 procedures for shielded metal arc welding, appearance

and quality of welds, and methods used in correcting welding work, and with the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion

resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

4. Finish welds at exposed connections so no roughness shows after finishing and contours

of welded surfaces match adjacent contours.




3.5 ADJUSTING

A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve

indicated slope of pipe.

B. Trim excess length of continuous-thread hanger and support rods to 1-1/2 inches.

3.6 PAINTING

A. Touch Up: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately

after erecting hangers and supports. Use same materials as used for shop painting. Comply

with SSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils.

B. Touch Up: Cleaning and touchup painting of field welds, bolted connections, and abraded areas

of shop paint on miscellaneous metal are specified in Division 9 painting Sections.

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply

galvanizing-repair paint to comply with ASTM A 780.




VIBRATION CONTROLS FOR HVAC 230548-1

SECTION 230548 - VIBRATION CONTROLS FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY


1. Elastomeric isolation pads.

2. Elastomeric isolation mounts.

3. Freestanding and restrained-spring isolators.

4. Pipe-riser resilient supports.

5. Spring hangers.


A. Product Data: For each type of product.

B. Delegated-Design Submittal: For each vibration isolation and seismic-restraint device.

1. Include design calculations and details for selecting vibration isolators and seismic

restraints complying with performance requirements, design criteria, and analysis data

signed and sealed by the qualified professional engineer responsible for their preparation.


A. Welding certificates.

B. Field quality-control reports.


A. Comply with seismic-restraint requirements in the IBC unless requirements in this Section are

more stringent.

B. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M,

"Structural Welding Code - Steel."

PART 2 - PRODUCTS

2.1 MANUFACTURERS








the manufacturers specified.

2.2 VIBRATION ISOLATORS

A. Manufacturers:

1. B-Line Systems, Inc.

2. Isolation Technology, Inc.

3. Kinetics Noise Control, Inc.

4. Mason Industries, Inc.

5. Vibration Eliminator Co., Inc.

6. Vibration Isolation Co., Inc.

7. Vibration Mountings & Controls/Korfund.

B. Elastomeric Isolator Pads: Oil- and water-resistant elastomer or natural rubber, arranged in

single or multiple layers, molded with a nonslip pattern and galvanized steel baseplates of

sufficient stiffness for uniform loading over pad area, and factory cut to sizes that match

requirements of supported equipment.

1. Material: Standard neoprene.

C. Spring Isolators: Freestanding, laterally stable, open-spring isolators, Type “B”.

1. Spring isolators shall be free standing and laterally stable without any housing and

complete with a molded neoprene cup or ¼” (6mm) neoprene acoustical friction pad

between the baseplate and the support. All mountings shall have leveling bolts that must

be rigidly bolted to the equipment. Installed and operating heights shall be equal. The

ratio of the spring diameter divided by the compressed spring height shall be no less than

0.8. Springs shall have a minimum additional travel to solid equal to 50% of the rated

deflection. Submittals shall include spring diameters, deflection, compressed spring

height and solid spring height.

D. Restrained Spring Isolators: Freestanding, steel, open-spring isolators, restrained, Type “D”.

1. Equipment with large variations in the operating and installed weight, such as chillers,

boilers, etc. and equipment exposed to the wind such as cooling towers, roof mounted

fans and roof mounted air handling equipment shall be mounted on spring mountings, as

described in Engineering Specification B, including the neoprene acoustical pad within a

rigid sided housing that includes vertical limit stops to prevent spring extension when

weight is removed and temporary steel spacers between the upper and lower housings.

Housings shall serve as blocking during erection. When the equipment is at full

operating weight, the springs shall be adjusted to assume the weight and the spacers

removed, without changing the installed and operating heights. All restraining bolts shall

have rubber grommets to provide cushioning in the vertical as well as horizontal modes.

The hole through the bushing shall be a minimum of 0.75” (20mm) larger in diameter

than the restraining bolt. Horizontal clearance and the housing shall be a minimum of

0.5” (12mm) to avoid bumping and interfering with the spring action. Vertical limit stops

shall be out of contact during normal operation. Cooling tower mounts are to be located




between the supporting steel and the roof of the grillage and dunnage as shown on the

drawings when there is no provision for direct mounting. Housings and springs shall be

powder coated and hardware electro-galvanized.

E. Wide Flange Steel Base, Type “J”.

1. Vibration isolation manufacturer shall furnish integral structural steel bases. Rectangular

bases are preferred for all equipment. Centrifugal refrigeration machines and pump bases

may be T or L shaped. Pump bases for split case pumps shall be large enough to support

suction and discharge elbows. All perimeter members shall be steel beams with a

minimum depth equal to 1/10 of the longest dimension of the base. Base depth need not

exceed 14” (350mm) provided that the deflection and misalignment is kept within

acceptable limits as determined by the manufacturer. Height saving brackets shall be

employed in all mounting locations to provide a base clearance of 1” (25mm). Bases

shall be type WF as manufactured by Mason Industries, Inc.

F. Rubber Expansion Joint, Type “O”

1. Rubber expansion joints shall be peroxide cured EPDM throughout with Kevlar tire cord

reinforcement. Substitutions must have certifiable equal or superior characteristics. The

raised face rubber flanges must encase solid steel rings to prevent pull out. Flexible cable

wire is not acceptable. Sizes 1 ½” through 14” (40mm through 350mm) shall have a

ductile iron external ring between the two spheres. Sizes 16” through 24” (400mm to

600mm) may be single sphere. Sizes ¾” through 2” (20mm through 50mm) may have

one sphere, bolted threaded flange assemblies and cable retention.

2. Minimum ratings through 14” (350mm) shall be 250psi at 170°F and 215psi at 250°F.

(1.72Mpa at 77°C and 1.48Mpa at 121°C), 16” (400mm) through 24” (600mm) 180psi at

170°F and 150psi at 250°F. (1.24Mpa at 77°C and 1.03Mpa at 121°C). Higher published

rated connectors may be used where required.

3. Safety factors shall be a minimum of 3/1. All expansion joints must be factory tested to

150% of maximum pressure for 12 minutes before shipment.

4. The piping gap shall be equal to the length of the expansion joint under pressure. Control

rods passing through ½” (12mm) thick Neoprene washer bushings large enough to take

the thrust at 1000psi (0.7 kg/mm2) of surface area may be used on unanchored piping

where the manufacturer determines the condition exceeds the expansion joint rating

without them. Submittals shall include two test reports by independent consultants

showing minimum reductions of 20 DB in vibration accelerations and 10 DB in sound

pressure levels at typical blade passage frequencies on this or a similar product by the

same manufacturer. All expansion joints shall be installed on the equipment side of the

shut off valves. Expansion joints shall be SAFEFLEX SFDEJ, SFEJ, SFDCR or SFU

and Control Rods CR as manufactured by Mason Industries, Inc.

2.3 FACTORY FINISHES

A. Manufacturer's standard prime-coat finish ready for field painting.

B. Finish: Manufacturer's standard paint applied to factory-assembled and -tested equipment

before shipping.

1. Powder coating on springs and housings.




2. All hardware shall be electrogalvanized. Hot-dip galvanize metal components for

exterior use.

3. Baked enamel for metal components on isolators for interior use.

4. Color-code or otherwise mark vibration isolation devices to indicate capacity range.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and equipment to receive vibration isolation and seismic-control devices for

compliance with requirements, installation tolerances, and other conditions affecting

performance.

B. Examine roughing-in of reinforcement and cast-in-place anchors to verify actual locations

before installation.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install steel angles or channel, sized to prevent buckling, clamped with ductile-iron clamps to

hanger rods for trapeze and individual pipe hangers. At trapeze anchor locations, shackle piping

to trapeze. Requirements apply equally to hanging equipment. Do not weld angles to rods.

B. Install resilient bolt isolation washers on equipment anchor bolts.

3.3 EQUIPMENT BASES

A. Concrete Bases: Anchor equipment to concrete base according to supported equipment

manufacturer's written instructions for seismic codes at Project site.


install dowel rods on 18-inch centers around the full perimeter of the base.

2. Install epoxy-coated anchor bolts for supported equipment that extend through concrete

base and anchor into structural concrete floor.

3. Place and secure anchorage devices. Use Setting Drawings, templates, diagrams,

instructions, and directions furnished with items to be embedded.



6. Cast-in-place concrete materials and placement requirements are specified in Division 3.

3.4 FIELD QUALITY CONTROL

A. Testing: Engage a qualified testing agency to perform the following field quality-control

testing:

1. Isolator deflection.




3.5 ADJUSTING

A. Adjust isolators after piping systems have been filled and equipment is at operating weight.

B. Adjust limit stops on restrained spring isolators to mount equipment at normal operating height.

After equipment installation is complete, adjust limit stops so they are out of contact during

normal operation.

C. Adjust active height of spring isolators.

3.6 CLEANING

A. After completing equipment installation, inspect vibration isolation and seismic-control devices.

Remove paint splatters and other spots, dirt, and debris.




IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT 230553-1

SECTION 230553 – IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY


1. Equipment labels.

2. Pipe labels.

3. Valve tags.

4. Warning tags.



PART 2 - PRODUCTS

2.1 EQUIPMENT IDENTIFICATION DEVICES

A. Equipment Markers: Engraved, color-coded laminated plastic. Include contact-type, permanent

adhesive.

1. Terminology: Match schedules as closely as possible.

2. Data:

a. Name and plan number.

b. Equipment service.

c. Design capacity.

d. Other design parameters such as pressure drop, entering and leaving conditions,

and speed.

3. Size: 2-1/2 by 4 inches for control devices, dampers, and valves; 4-1/2 by 6 inches for

equipment.

2.2 PIPING IDENTIFICATION DEVICES

A. Manufactured Pipe Markers, General: Preprinted, color-coded, with lettering indicating service,

and showing direction of flow.

1. Colors: Comply with ASME A13.1, unless otherwise indicated.

2. Lettering: Use piping system terms indicated and abbreviate only as necessary for each

application length.




3. Pipes with OD, Including Insulation, Less Than 6 Inches: Full-band pipe markers

extending 360 degrees around pipe at each location.

4. Pipes with OD, Including Insulation, 6 Inches and Larger: Either full-band or strip-type

pipe markers at least three times letter height and of length required for label.

5. Arrows: Integral with piping system service lettering to accommodate both directions; or

as separate unit on each pipe marker to indicate direction of flow.

B. Pretensioned Pipe Markers: Precoiled semirigid plastic formed to cover full circumference of

pipe and to attach to pipe without adhesive.

C. Shaped Pipe Markers: Preformed semirigid plastic formed to partially cover circumference of

pipe and to attach to pipe with mechanical fasteners that do not penetrate insulation vapor

barrier.

2.3 VALVE TAGS

A. Valve Tags: Stamped or engraved with 1/4-inch letters for piping system abbreviation and 1/2-

inch numbers, with numbering scheme approved by Architect. Provide 5/32-inch hole for

fastener.

1. Material: 0.032-inch- thick brass.

2. Valve-Tag Fasteners: Brass S-hook.

2.4 VALVE SCHEDULES

A. Valve Schedules: For each piping system, on standard-size bond paper. Tabulate valve

number, piping system, system abbreviation (as shown on valve tag), location of valve (room or

space), normal-operating position (open, closed, or modulating), and variations for

identification. Mark valves for emergency shutoff and similar special uses.

1. Valve-Schedule Frames: Glazed display frame for removable mounting on masonry

walls for each page of valve schedule. Include mounting screws.

2. Frame: Extruded aluminum.

3. Glazing: ASTM C 1036, Type I, Class 1, Glazing Quality B, 2.5-mm, single-thickness

glass.

2.5 WARNING TAGS

A. Warning Tags: Preprinted or partially preprinted, accident-prevention tags; of plasticized card

stock with matte finish suitable for writing.

1. Size: Approximately 4 by 7 inches.

2. Fasteners: Brass grommet and wire.

3. Nomenclature: Large-size primary caption such as DANGER, CAUTION, or DO NOT

OPERATE.

4. Color: Yellow background with black lettering.




PART 3 - EXECUTION

3.1 APPLICATIONS, GENERAL

A. Products specified are for applications referenced in other Division 15 Sections. If more than

single-type material, device, or label is specified for listed applications, selection is Installer's

option.

3.2 EQUIPMENT IDENTIFICATION

A. Install equipment markers with permanent adhesive on or near each major item of mechanical

equipment. Data required for markers may be included on signs, and markers may be omitted if

both are indicated.

1. Letter Size: Minimum 1/4 inch for name of units if viewing distance is less than 24

inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering

for greater viewing distances. Include secondary lettering two-thirds to three-fourths the

size of principal lettering.

2. Data: Distinguish among multiple units, indicate operational requirements, indicate

safety and emergency precautions, warn of hazards and improper operations, and identify

units.

3. Locate markers where accessible and visible. Include markers for the following general

categories of equipment:

a. Main control and operating valves, including safety devices.

b. Fuel-burning units, including heaters.

c. Pumps, compressors, chillers, condensers, and similar motor-driven units.

d. Heat exchangers, coils, evaporators, cooling towers, and similar equipment.

e. Fans, blowers, primary balancing dampers, and mixing boxes.

f. Tanks and pressure vessels.

g. Strainers, filters, water-treatment systems, and similar equipment.

3.3 PIPING IDENTIFICATION

A. Install manufactured pipe markers indicating service on each piping system. Install with flow

indication arrows showing direction of flow.

1. Pipes with OD, Including Insulation, Less Than 6 Inches: Pretensioned pipe markers.

Use size to ensure a tight fit.

2. Pipes with OD, Including Insulation, Less Than 6 Inches: Self-adhesive pipe markers.

Use color-coded, self-adhesive plastic tape, at least 1-1/2 inches wide, lapped at least 1-

1/2 inches at both ends of pipe marker, and covering full circumference of pipe.

3. Pipes with OD, Including Insulation, 6 Inches and Larger: Shaped pipe markers. Use

size to match pipe and secure with fasteners.

4. Pipes with OD, Including Insulation, 6 Inches and Larger: Self-adhesive pipe markers.

Use color-coded, self-adhesive plastic tape, at least 1-1/2 inches wide, lapped at least 3

inches at both ends of pipe marker, and covering full circumference of pipe.




B. Locate pipe markers and color bands where piping is exposed in finished spaces; machine

rooms; accessible maintenance spaces such as shafts, tunnels, and plenums; and exterior

nonconcealed locations as follows:

1. Near each valve and control device.

2. Near each branch connection, excluding short takeoffs for fixtures and terminal units.

Where flow pattern is not obvious, mark each pipe at branch.

3. Near penetrations through walls, floors, ceilings, and nonaccessible enclosures.

4. At access doors, manholes, and similar access points that permit view of concealed

piping.

5. Near major equipment items and other points of origination and termination.

6. Spaced at maximum intervals of 50 feet along each run. Reduce intervals to 25 feet in

areas of congested piping and equipment.

7. On piping above removable acoustical ceilings. Omit intermediately spaced markers.

3.4 VALVE-TAG INSTALLATION

A. Install tags on valves and control devices in piping systems, except check valves; valves within

factory-fabricated equipment units; plumbing fixture supply stops; shutoff valves; faucets;

convenience and lawn-watering hose connections; and HVAC terminal devices and similar

roughing-in connections of end-use fixtures and units. List tagged valves in a valve schedule.

B. Valve-Tag Application Schedule: Tag valves according to size, shape, and color scheme and

with captions similar to those indicated in the following:

1. Valve-Tag Size and Shape:

a. 2 inches, round.

2. Valve-Tag Color:

a. Natural.

3. Letter Color:

a. Black.

3.5 VALVE-SCHEDULE INSTALLATION

A. Mount valve schedule on wall in accessible location in each major equipment room.

3.6 WARNING-TAG INSTALLATION

A. Write required message on, and attach warning tags to, equipment and other items where

required.




3.7 ADJUSTING

A. Relocate mechanical identification materials and devices that have become visually blocked by

other work.

3.8 CLEANING

A. Clean faces of mechanical identification devices and glass frames of valve schedules.




TESTING, ADJUSTING, AND BALANCING FOR HVAC 230593-1

SECTION 230593 - TEST AND BALANCE

PART 1 - GENERAL

1.1 SUMMARY


1. Balancing Hydronic Piping Systems:

a. Constant-flow hydronic systems.

1.2 DEFINITIONS

A. Adjust: To regulate fluid flow rate and air patterns at the terminal equipment, such as to reduce

fan speed or adjust a damper.

B. Balance: To proportion flows within the distribution system, including submains, branches, and

terminals, according to indicated quantities.

C. Barrier or Boundary: Construction, either vertical or horizontal, such as walls, floors, and

ceilings that are designed and constructed to restrict the movement of airflow, smoke, odors,

and other pollutants.

D. Draft: A current of air, when referring to localized effect caused by one or more factors of high

air velocity, low ambient temperature, or direction of airflow, whereby more heat is withdrawn

from a person's skin than is normally dissipated.

E. NC: Noise criteria.

F. Procedure: An approach to and execution of a sequence of work operations to yield repeatable

results.

G. RC: Room criteria.

H. Report Forms: Test data sheets for recording test data in logical order.

I. Static Head: The pressure due to the weight of the fluid above the point of measurement. In a

closed system, static head is equal on both sides of the pump.

J. Suction Head: The height of fluid surface above the centerline of the pump on the suction side.

K. TAB: Testing, adjusting, and balancing.

L. Terminal: A point where the controlled medium, such as fluid or energy, enters or leaves the

distribution system.

M. Test: A procedure to determine quantitative performance of systems or equipment.




N. Testing, Adjusting, and Balancing (TAB) Firm: The entity responsible for performing and

reporting TAB procedures.

1.3 SUBMITTALS

A. Qualification Data: Within 30 days from Contractor's Notice to Proceed, submit 2 copies of

evidence that TAB firm and this Project's TAB team members meet the qualifications specified

in "Quality Assurance" Article.

B. Contract Documents Examination Report: Within 30 days from Contractor's Notice to Proceed,

submit 2 copies of the Contract Documents review report as specified in Part 3.

C. Strategies and Procedures Plan: Within 60 days from Contractor's Notice to Proceed, submit 2

copies of TAB strategies and step-by-step procedures as specified in Part 3 "Preparation"

Article. Include a complete set of report forms intended for use on this Project.

D. Certified TAB Reports: Submit two copies of reports prepared, as specified in this Section, on

approved forms certified by TAB firm.

E. Sample Report Forms: Submit two sets of sample TAB report forms.


A. TAB Firm Qualifications: Engage a TAB firm certified by either AABC or NEBB.

B. TAB Conference: Meet with Owner's and Architect's representatives on approval of TAB

strategies and procedures plan to develop a mutual understanding of the details. Ensure the

participation of TAB team members, equipment manufacturers' authorized service

representatives, HVAC controls installers, and other support personnel. Provide seven days'

advance notice of scheduled meeting time and location.

1. Agenda Items: Include at least the following:

a. Submittal distribution requirements.

b. The Contract Documents examination report.

c. TAB plan.

d. Work schedule and Project-site access requirements.

e. Coordination and cooperation of trades and subcontractors.

f. Coordination of documentation and communication flow.

C. Certification of TAB Reports: Certify TAB field data reports. This certification includes the

following:

1. Review field data reports to validate accuracy of data and to prepare certified TAB

reports.

2. Certify that TAB team complied with approved TAB plan and the procedures specified

and referenced in this Specification.

D. TAB Report Forms: Use standard forms from AABC's "National Standards for Testing and

Balancing Heating, Ventilating, and Air Conditioning Systems." Edit first paragraph below if




Project scope justifies requirements, which can be imposed even if firm certification is not

required.

E. Instrumentation Type, Quantity, and Accuracy: As described in AABC's "National Standards

for Testing and Balancing Heating, Ventilating, and Air Conditioning Systems.”

F. Instrumentation Calibration: Calibrate instruments at least every six months or more frequently

if required by instrument manufacturer.

1. Keep an updated record of instrument calibration that indicates date of calibration and the

name of party performing instrument calibration.

1.5 PROJECT CONDITIONS

A. Partial Owner Occupancy: Owner may occupy completed areas of building before Substantial

Completion. Cooperate with Owner during TAB operations to minimize conflicts with Owner's

operations.

1.6 COORDINATION

A. Coordinate the efforts of factory-authorized service representatives for systems and equipment,

HVAC controls installers, and other mechanics to operate HVAC systems and equipment to

support and assist TAB activities.

B. Notice: Provide seven days' advance notice for each test. Include scheduled test dates and

times.

C. Perform TAB after leakage and pressure tests on air and water distribution systems have been

satisfactorily completed.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine the Contract Documents to become familiar with Project requirements and to discover

conditions in systems' designs that may preclude proper TAB of systems and equipment.

1. Contract Documents are defined in the General and Supplementary Conditions of

Contract.

2. Verify that balancing devices, such as test ports, gage cocks, thermometer wells, flow-

control devices, balancing valves and fittings, and manual volume dampers, are required

by the Contract Documents. Verify that quantities and locations of these balancing

devices are accessible and appropriate for effective balancing and for efficient system and

equipment operation.




B. Examine approved submittal data of HVAC systems and equipment.

C. Examine Project Record Documents described in Division 1 Section "Project Record

Documents."

D. Examine design data, including HVAC system descriptions, statements of design assumptions

for environmental conditions and systems' output, and statements of philosophies and

assumptions about HVAC system and equipment controls.

E. Examine equipment performance data including fan and pump curves. Relate performance data

to Project conditions and requirements, including system effects that can create undesired or

unpredicted conditions that cause reduced capacities in all or part of a system.

F. Examine system and equipment installations to verify that they are complete and that testing,

cleaning, adjusting, and commissioning specified in individual Sections have been performed.

G. Examine system and equipment test reports.

H. Examine HVAC system and equipment installations to verify that indicated balancing devices,

such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and

fittings, and manual volume dampers, are properly installed, and that their locations are

accessible and appropriate for effective balancing and for efficient system and equipment

operation.

I. Examine systems for functional deficiencies that cannot be corrected by adjusting and

balancing.

J. Examine HVAC equipment to ensure that clean filters have been installed, bearings are greased,

belts are aligned and tight, and equipment with functioning controls is ready for operation.

K. Examine strainers for clean screens and proper perforations.

L. Examine three-way valves for proper installation for their intended function of diverting or

mixing fluid flows.

M. Examine system pumps to ensure absence of entrained air in the suction piping.

N. Examine equipment for installation and for properly operating safety interlocks and controls.

O. Examine automatic temperature system components to verify the following:

1. Dampers, valves, and other controlled devices are operated by the intended controller.

2. Dampers and valves are in the position indicated by the controller.

3. Integrity of valves and dampers for free and full operation and for tightness of fully

closed and fully open positions.

4. Automatic modulating and shutoff valves, including two-way valves and three-way

mixing and diverting valves, are properly connected.

5. Thermostats are located to avoid adverse effects of sunlight, drafts, and cold walls.

6. Sensors are located to sense only the intended conditions.

7. Sequence of operation for control modes is according to the Contract Documents.

8. Controller set points are set at indicated values.




9. Interlocked systems are operating.

10. Changeover from heating to cooling mode occurs according to indicated values.

P. Report deficiencies discovered before and during performance of TAB procedures. Observe

and record system reactions to changes in conditions. Record default set points if different from

indicated values.

3.2 PREPARATION

A. Prepare a TAB plan that includes strategies and step-by-step procedures.

B. Complete system readiness checks and prepare system readiness reports. Verify the following:

1. Permanent electrical power wiring is complete.

2. Hydronic systems are filled, clean, and free of air.

3. Automatic temperature-control systems are operational.

4. Isolating and balancing valves are open and control valves are operational.

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained

in AABC's "National Standards for Testing and Balancing Heating, Ventilating, and Air

Conditioning Systems" or NEBB's "Procedural Standards for Testing, Adjusting, and Balancing

of Environmental Systems" and this Section.

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the

minimum extent necessary to allow adequate performance of procedures. After testing and

balancing, close probe holes and patch insulation with new materials identical to those removed.

Restore vapor barrier and finish according to insulation Specifications for this Project.

C. Mark equipment and balancing device settings with paint or other suitable, permanent

identification material, including damper-control positions, valve position indicators, and

similar controls and devices, to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.4 PROCEDURES FOR HYDRONIC SYSTEMS

A. Measure water flow at pumps. Use the following procedures, except for positive-displacement

pumps:

1. Verify impeller size by operating the pump with the discharge valve closed. Read

pressure differential across the pump. Convert pressure to head and correct for

differences in gage heights. Note the point on manufacturer's pump curve at zero flow

and verify that the pump has the intended impeller size.

2. Check system resistance. With all valves open, read pressure differential across the

pump and mark pump manufacturer's head-capacity curve. Adjust pump discharge valve

until indicated water flow is achieved.




3. Verify pump-motor brake horsepower. Calculate the intended brake horsepower for the

system based on pump manufacturer's performance data. Compare calculated brake

horsepower with nameplate data on the pump motor. Report conditions where actual

amperage exceeds motor nameplate amperage.

4. Report flow rates that are not within plus or minus 5 percent of design.

B. Set calibrated balancing valves, if installed, at calculated presettings.

C. Measure flow at all stations and adjust, where necessary, to obtain first balance.

1. System components that have Cv rating or an accurately cataloged flow-pressure-drop

relationship may be used as a flow-indicating device.

D. Measure flow at main balancing station and set main balancing device to achieve flow that is 5

percent greater than indicated flow.

E. Adjust balancing stations to within specified tolerances of indicated flow rate as follows:

1. Determine the balancing station with the highest percentage over indicated flow.

2. Adjust each station in turn, beginning with the station with the highest percentage over

indicated flow and proceeding to the station with the lowest percentage over indicated

flow.

3. Record settings and mark balancing devices.

F. Measure pump flow rate and make final measurements of pump amperage, voltage, rpm, pump

heads, and systems' pressures and temperatures including outdoor-air temperature.

G. Measure the differential-pressure control valve settings existing at the conclusions of balancing.

3.5 PROCEDURES FOR MOTORS

A. Motors, 1/2 HP and Larger: Test at final balanced conditions and record the following data:

1. Manufacturer, model, and serial numbers.

2. Motor horsepower rating.

3. Motor rpm.

4. Efficiency rating.

5. Nameplate and measured voltage, each phase.

6. Nameplate and measured amperage, each phase.

7. Starter thermal-protection-element rating.

B. Motors Driven by Variable-Frequency Controllers: Test for proper operation at speeds varying

from minimum to maximum. Test the manual bypass for the controller to prove proper

operation. Record observations, including controller manufacturer, model and serial numbers,

and nameplate data.

3.6 PROCEDURES FOR CHILLERS

A. Balance water flow through each evaporator and condenser to within specified tolerances of

indicated flow with all pumps operating. With only one chiller operating in a multiple chiller




installation, do not exceed the flow for the maximum tube velocity recommended by the chiller

manufacturer. Measure and record the following data with each chiller operating at design

conditions:

1. Evaporator-water entering and leaving temperatures, pressure drop, and water flow.

2. If water-cooled chillers, condenser-water entering and leaving temperatures, pressure

drop, and water flow.

3. Evaporator and condenser refrigerant temperatures and pressures, using instruments

furnished by chiller manufacturer.

4. Power factor if factory-installed instrumentation is furnished for measuring kilowatt.

5. Kilowatt input if factory-installed instrumentation is furnished for measuring kilowatt.

6. Capacity: Calculate in tons of cooling.

3.7 PROCEDURES FOR COOLING TOWERS

A. Shut off makeup water for the duration of the test, and verify that makeup and blowdown

systems are fully operational after tests and before leaving the equipment. Perform the

following tests and record the results:

1. Measure condenser-water flow to each cell of the cooling tower.

2. Measure entering- and leaving-water temperatures.

3. Measure wet- and dry-bulb temperatures of entering air.

4. Measure wet- and dry-bulb temperatures of leaving air.

5. Measure condenser-water flow rate recirculating through the cooling tower.

6. Measure cooling tower pump discharge pressure.

7. Adjust water level and feed rate of makeup-water system.

3.8 TEMPERATURE-CONTROL VERIFICATION

A. Verify that controllers are calibrated and commissioned.

B. Check transmitter and controller locations and note conditions that would adversely affect

control functions.

C. Record controller settings and note variances between set points and actual measurements.

D. Check the operation of limiting controllers (i.e., high- and low-temperature controllers).

E. Check free travel and proper operation of control devices such as damper and valve operators.

F. Check the sequence of operation of control devices. Note the speed of response to input

changes.

G. Check the interaction of interlock and lockout systems.

H. Record voltages of power supply and controller output. Determine whether the system operates

on a grounded or nongrounded power supply.

I. Note operation of electric actuators using spring return for proper fail-safe operations.




3.9 TOLERANCES

A. Set HVAC system airflow and water flow rates within the following tolerances:

1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus 5 to plus 10 percent.

2. Cooling-Water Flow Rate: 0 to minus 5 percent.

3.10 REPORTING

A. Initial Construction-Phase Report: Based on examination of the Contract Documents as

specified in "Examination" Article, prepare a report on the adequacy of design for systems'

balancing devices. Recommend changes and additions to systems' balancing devices to

facilitate proper performance measuring and balancing. Recommend changes and additions to

HVAC systems and general construction to allow access for performance measuring and

balancing devices.

B. Status Reports: As Work progresses, prepare reports to describe completed procedures,

procedures in progress, and scheduled procedures. Include a list of deficiencies and problems

found in systems being tested and balanced. Prepare a separate report for each system and each

building floor for systems serving multiple floors.

3.11 FINAL REPORT

A. General: Typewritten, or computer printout in letter-quality font, on standard bond paper, in

three-ring binder, tabulated and divided into sections by tested and balanced systems.

B. Include a certification sheet in front of binder signed and sealed by the certified testing and

balancing engineer.

1. Include a list of instruments used for procedures, along with proof of calibration.

C. Final Report Contents: In addition to certified field report data, include the following:

1. Pump curves.

2. Fan curves.

3. Manufacturers' test data.

4. Field test reports prepared by system and equipment installers.

5. Other information relative to equipment performance, but do not include Shop Drawings

and Product Data.

D. General Report Data: In addition to form titles and entries, include the following data in the

final report, as applicable:

1. Title page.

2. Name and address of TAB firm.

3. Project name.

4. Project location.

5. Architect's name and address.

6. Engineer's name and address.




7. Contractor's name and address.

8. Report date.

9. Signature of TAB firm who certifies the report.

10. Table of Contents with the total number of pages defined for each section of the report.

Number each page in the report.

11. Summary of contents including the following:

a. Indicated versus final performance.

b. Notable characteristics of systems.

c. Description of system operation sequence if it varies from the Contract

Documents.

12. Nomenclature sheets for each item of equipment.

13. Notes to explain why certain final data in the body of reports varies from indicated

values.

14. Test conditions for fans and pump performance forms including the following:

a. Settings for outside-, return-, and exhaust-air dampers.

b. Conditions of filters.

c. Other system operating conditions that affect performance.

E. System Diagrams: Include schematic layouts of air and hydronic distribution systems. Present

each system with single-line diagram and include the following:

1. Quantities of outside, supply, return, and exhaust airflows.

2. Water flow rates.

3. Duct, outlet, and inlet sizes.

4. Pipe and valve sizes and locations.

5. Balancing stations.

6. Position of balancing devices.

F. Packaged Chiller Reports:

1. Unit Data:

a. Unit identification.

b. Make and model number.

c. Manufacturer's serial number.

d. Refrigerant type and capacity in gal..

e. Starter type and size.

f. Starter thermal protection size.

g. Compressor make and model number.

h. Compressor manufacturer's serial number.

2. Water-Cooled Condenser Test Data (Indicated and Actual Values):

a. Refrigerant pressure in psig.

b. Refrigerant temperature in deg F.

c. Entering-water temperature in deg F.

d. Leaving-water temperature in deg F.

e. Entering-water pressure in feet of head or psig.




f. Water pressure differential in feet of head or psig.

3. Evaporator Test Reports (Indicated and Actual Values):

a. Refrigerant pressure in psig.

b. Refrigerant temperature in deg F.

c. Entering-water temperature in deg F.

d. Leaving-water temperature in deg F.

e. Entering-water pressure in feet of head or psig.

f. Water pressure differential in feet of head or psig.

4. Compressor Test Data (Indicated and Actual Values):

a. Suction pressure in psig.

b. Suction temperature in deg F.

c. Discharge pressure in psig.

d. Discharge temperature in deg F.

e. Oil pressure in psig.

f. Oil temperature in deg F.

g. Voltage at each connection.

h. Amperage for each phase.

i. Kilowatt input.

j. Crankcase heater kilowatt.

k. Chilled-water control set point in deg F.

l. Condenser-water control set point in deg F.

m. Refrigerant low-pressure-cutoff set point in psig.

n. Refrigerant high-pressure-cutoff set point in psig.

5. Refrigerant Test Data (Indicated and Actual Values):

a. Oil level.

b. Refrigerant level.

c. Relief valve setting in psig.

d. Bearing temperatures in deg F.

e. Vane position.

f. Low-temperature-cutoff set point in deg F.

G. Cooling Tower Test Reports: For cooling towers, include the following:

1. Unit Data:

a. Unit identification.

b. Make and type.

c. Model and serial numbers.

d. Nominal cooling capacity in tons.

e. Water-treatment chemical feeder and chemical.

f. Number and type of fans.

g. Fan motor make, frame size, rpm, and horsepower.

h. Fan motor voltage at each connection.

i. Sheave make, size in inches, and bore.

j. Sheave dimensions, center-to-center, and amount of adjustments in inches.




k. Number of belts, make, and size.

l. Pump make and model number.

m. Pump manufacturer's serial number.

n. Pump motor make and frame size.

o. Pump motor horsepower and rpm.

2. Pump Test Data (Indicated and Actual Values):

a. Voltage at each connection.

b. Amperage for each phase.

c. Water flow rate in gpm.

3. Water Test Data (Indicated and Actual Values):

a. Entering-water temperature in deg F.

b. Leaving-water temperature in deg F.

c. Water temperature differential in deg F.

d. Water flow rate in gpm.

e. Bleed water flow rate in gpm.

H. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.

b. Serial number.

c. Application.

d. Dates of use.

e. Dates of calibration.

3.12 INSPECTIONS

A. Initial Inspection:

1. After testing and balancing are complete, operate each system and randomly check

measurements to verify that the system is operating according to the final test and balance

readings documented in the Final Report.

B. Final Inspection:

1. After initial inspection is complete and evidence by random checks verifies that testing

and balancing are complete and accurately documented in the final report, request that a

final inspection be made by Architect.

2. TAB firm test and balance engineer shall conduct the inspection in the presence of

Architect.

3. Architect shall randomly select measurements documented in the final report to be

rechecked. The rechecking shall be limited to either 10 percent of the total measurements

recorded, or the extent of measurements that can be accomplished in a normal 8-hour

business day.




4. If the rechecks yield measurements that differ from the measurements documented in the

final report by more than the tolerances allowed, the measurements shall be noted as

"FAILED."

5. If the number of "FAILED" measurements is greater than 10 percent of the total

measurements checked during the final inspection, the testing and balancing shall be

considered incomplete and shall be rejected.

6. TAB firm shall recheck all measurements and make adjustments. Revise the final report

and balancing device settings to include all changes and resubmit the final report.

7. Request a second final inspection. If the second final inspection also fails, Owner shall

contract the services of another TAB firm to complete the testing and balancing in

accordance with the Contract Documents and deduct the cost of the services from the

final payment.

3.13 ADDITIONAL TESTS

A. Within 90 days of completing TAB, perform additional testing and balancing to verify that

balanced conditions are being maintained throughout and to correct unusual conditions.

B. Seasonal Periods: If initial TAB procedures were not performed during near-peak summer and

winter conditions, perform additional testing, inspecting, and adjusting during near-peak

summer and winter conditions.




HVAC EQUIPMENT INSULATION 230716-1

SECTION 230716 – HVAC EQUIPMENT INSULATION

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes insulating the following HVAC equipment that is not factory insulated:

1. Chilled-water pumps.

1.2 SUBMITTALS

A. Product Data: Identify thermal conductivity, thickness, and jackets (both factory and field

applied, if any), for each type of product indicated.


A. Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship

program or another craft training program certified by the U.S. Department of Labor, Bureau of

Apprenticeship and Training.

B. Fire-Test-Response Characteristics: As determined by testing materials identical to those

specified in this Section according to ASTM E 84, by a testing and inspecting agency

acceptable to authorities having jurisdiction. Factory label insulation and jacket materials and

sealer and cement material containers with appropriate markings of applicable testing and

inspecting agency.

1. Insulation Installed Indoors: Flame-spread rating of 25 or less, and smoke-developed

rating of 50 or less.

2. Insulation Installed Outdoors: Flame-spread rating of 75 or less, and smoke-developed



A. Packaging: Ship insulation materials in containers marked by manufacturer with appropriate

ASTM specification designation, type and grade, and maximum use temperature.

1.5 COORDINATION

A. Coordinate clearance requirements with equipment Installer for insulation application.




PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

1. Flexible Elastomeric Thermal Insulation:

a. Armstrong World Industries, Inc.

b. Rubatex Corp.

c. Imcoa.

2.2 INSULATION MATERIALS

A. Flexible Elastomeric Thermal Insulation: Closed-cell, sponge- or expanded-rubber materials.

Comply with ASTM C 534, Type II for sheet materials.

1. Adhesive: As recommended by insulation material manufacturer.

2. Ultraviolet-Protective Coating: As recommended by insulation manufacturer.

2.3 VAPOR RETARDERS

A. Mastics: Materials recommended by insulation material manufacturer that are compatible with

insulation materials, jackets, and substrates.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements for installation and other

conditions affecting performance of insulation application.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will

adversely affect insulation application.

3.3 GENERAL APPLICATION REQUIREMENTS

A. Apply insulation materials, accessories, and finishes according to the manufacturer's written

instructions; with smooth, straight, and even surfaces; and free of voids throughout the length of

equipment.




B. Refer to schedules at the end of this Section for materials, forms, jackets, and thicknesses

required for each equipment system.

C. Use accessories compatible with insulation materials and suitable for the service. Use

accessories that do not corrode, soften, or otherwise attack insulation or jacket in either the wet

or dry state.

D. Apply multiple layers of insulation with longitudinal and end seams staggered.

E. Seal joints and seams with vapor-retarder mastic on insulation indicated to receive a vapor

retarder.

F. Keep insulation materials dry during application and finishing.

G. Apply insulation with tight longitudinal seams and end joints. Bond seams and joints with

adhesive recommended by the insulation material manufacturer.

H. Apply insulation with the least number of joints practical.

I. Apply insulation over fittings and specialties, with continuous thermal and vapor-retarder

integrity, unless otherwise indicated.

J. Hangers and Anchors: Where vapor retarder is indicated, seal penetrations in insulation at

hangers, supports, anchors, and other projections with vapor-retarder mastic. Apply insulation

continuously through hangers and around anchor attachments.

K. Insulation Terminations: For insulation application where vapor retarders are indicated, seal

ends with a compound recommended by the insulation material manufacturer to maintain vapor

retarder.

L. Insulate the following indoor equipment:

1. Chilled-water centrifugal pump housings.

M. Omit insulation from the following:

1. Vibration-control devices.

2. Testing agency labels and stamps.

3. Nameplates and data plates.

3.4 FINISHES

A. Flexible Elastomeric Thermal Insulation: After adhesive has fully cured, apply two coats of

insulation manufacturer's recommended protective coating.


A. Insulation applications will be considered defective if sample inspection reveals noncompliance

with requirements. Remove defective Work and replace with new materials according to these

Specifications.




B. Reinstall insulation and covers on pumps and tanks uncovered for inspection according to these

Specifications.

3.6 EQUIPMENT APPLICATIONS

A. Insulation materials and thicknesses are specified in schedules at the end of this Section.

3.7 INTERIOR EQUIPMENT INSULATION APPLICATION SCHEDULE

A. Equipment: Chilled-water pumps.

1. Operating Temperature: 35 to 75 deg F.

2. Insulation Material: Flexible elastomeric.

3. Insulation Thickness: 1-inch thick.




HVAC PIPING INSULATION 230719-1

SECTION 230719 – HVAC PIPING INSULATION

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes insulating the following HVAC piping systems:

1. Chilled-water piping, indoors.

2. Makeup-water piping, indoors.

1.2 SUBMITTALS

A. Product Data: Identify thermal conductivity, thickness, and jackets (both factory and field

applied, if any), for each type of product indicated.


A. Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship

program or another craft training program certified by the U.S. Department of Labor, Bureau of

Apprenticeship and Training.

B. Fire-Test-Response Characteristics: As determined by testing materials identical to those

specified in this Section according to ASTM E 84, by a testing and inspecting agency

acceptable to authorities having jurisdiction. Factory label insulation and jacket materials and

sealer and cement material containers with appropriate markings of applicable testing and

inspecting agency.

1. Insulation Installed Indoors: Flame-spread rating of 25 or less, and smoke-developed


2. Insulation Installed Outdoors: Flame-spread rating of 75 or less, and smoke-developed



A. Packaging: Ship insulation materials in containers marked by manufacturer with appropriate

ASTM specification designation, type and grade, and maximum use temperature.

1.5 COORDINATION

A. Coordinate size and location of supports, hangers, and insulation shields specified in

Division 23 Section "Hangers and Supports."

B. Coordinate clearance requirements with piping Installer for insulation application.




C. Coordinate installation and testing of steam or electric heat tracing.

1.6 SCHEDULING

A. Schedule insulation application after testing piping systems and, where required, after installing

and testing heat-trace tape. Insulation application may begin on segments of piping that have

satisfactory test results.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


following:

1. Mineral-Fiber Insulation:

a. CertainTeed Manson.

b. Knauf FiberGlass GmbH.

c. Owens-Corning Fiberglas Corp.

2. Flexible Elastomeric Thermal Insulation:

a. Armstrong World Industries, Inc.

b. Rubatex Corp.

c. Imoca.

2.2 INSULATION MATERIALS

A. Mineral-Fiber Insulation: Glass fibers bonded with a thermosetting resin complying with the

following:

1. Preformed Pipe Insulation: Comply with ASTM C 547, Type 1, with factory-applied, all-

purpose, vapor-retarder jacket.

2. Blanket Insulation: Comply with ASTM C 553, Type II, without facing.

3. Fire-Resistant Adhesive: Comply with MIL-A-3316C in the following classes and

grades:

a. Class 1, Grade A for bonding glass cloth and tape to unfaced glass-fiber insulation,

for sealing edges of glass-fiber insulation, and for bonding lagging cloth to unfaced

glass-fiber insulation.

b. Class 2, Grade A for bonding glass-fiber insulation to metal surfaces.

4. Vapor-Retarder Mastics: Fire- and water-resistant, vapor-retarder mastic for indoor

applications. Comply with MIL-C-19565C, Type II.

5. Mineral-Fiber Insulating Cements: Comply with ASTM C 195.

6. Mineral-Fiber, Hydraulic-Setting Insulating and Finishing Cement: Comply with

ASTM C 449/C 449M.




B. Flexible Elastomeric Thermal Insulation: Closed-cell, sponge- or expanded-rubber materials.

Comply with ASTM C 534, Type I for tubular materials and Type II for sheet materials.


2. Ultraviolet-Protective Coating: As recommended by insulation manufacturer.

C. Prefabricated Thermal Insulating Fitting Covers: Comply with ASTM C 450 for dimensions

used in preforming insulation to cover valves, elbows, tees, and flanges.

2.3 FIELD-APPLIED JACKETS

A. General: ASTM C 921, Type 1, unless otherwise indicated.

B. Foil and Paper Jacket: Laminated, glass-fiber-reinforced, flame-retardant kraft paper and

aluminum foil.

C. Standard PVC Fitting Covers: Factory-fabricated fitting covers manufactured from 20-mil-

thick, high-impact, ultraviolet-resistant PVC.

1. Shapes: 45- and 90-degree, short- and long-radius elbows, tees, valves, flanges, reducers,

end caps, soil-pipe hubs, traps, mechanical joints, and P-trap and supply covers for

lavatories for the disabled.


2.4 ACCESSORIES AND ATTACHMENTS

A. Glass Cloth and Tape: Comply with MIL-C-20079H, Type I for cloth and Type II for tape.

Woven glass-fiber fabrics, plain weave, presized a minimum of 8 oz./sq. yd.

1. Tape Width: 4 inches.

2.5 VAPOR RETARDERS

A. Mastics: Materials recommended by insulation material manufacturer that are compatible with

insulation materials, jackets, and substrates.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements for installation and other

conditions affecting performance of insulation application.





3.2 PREPARATION

A. Surface Preparation: Clean and dry pipe and fitting surfaces. Remove materials that will

adversely affect insulation application.

3.3 GENERAL APPLICATION REQUIREMENTS

A. Apply insulation materials, accessories, and finishes according to the manufacturer's written

instructions; with smooth, straight, and even surfaces; free of voids throughout the length of

piping, including fittings, valves, and specialties.

B. Refer to schedules at the end of this Section for materials, forms, jackets, and thicknesses

required for each piping system.

C. Use accessories compatible with insulation materials and suitable for the service. Use

accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or

dry state.

D. Apply insulation with longitudinal seams at top and bottom of horizontal pipe runs.

E. Apply multiple layers of insulation with longitudinal and end seams staggered.

F. Do not weld brackets, clips, or other attachment devices to piping, fittings, and specialties.

G. Seal joints and seams with vapor-retarder mastic on insulation indicated to receive a vapor

retarder.

H. Keep insulation materials dry during application and finishing.

I. Apply insulation with tight longitudinal seams and end joints. Bond seams and joints with

adhesive recommended by the insulation material manufacturer.

J. Apply insulation with the least number of joints practical.

K. Apply insulation over fittings, valves, and specialties, with continuous thermal and vapor-

retarder integrity, unless otherwise indicated. Refer to special instructions for applying

insulation over fittings, valves, and specialties.

L. Hangers and Anchors: Where vapor retarder is indicated, seal penetrations in insulation at

hangers, supports, anchors, and other projections with vapor-retarder mastic.

1. Apply insulation continuously through hangers and around anchor attachments.

2. For insulation application where vapor retarders are indicated, extend insulation on

anchor legs at least 12 inches from point of attachment to pipe and taper insulation ends.

Seal tapered ends with a compound recommended by the insulation material

manufacturer to maintain vapor retarder.

3. Install insert materials and apply insulation to tightly join the insert. Seal insulation to

insulation inserts with adhesive or sealing compound recommended by the insulation

material manufacturer.




4. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over

jacket, arranged to protect the jacket from tear or puncture by the hanger, support, and

shield.

M. Insulation Terminations: For insulation application where vapor retarders are indicated, taper

insulation ends. Seal tapered ends with a compound recommended by the insulation material

manufacturer to maintain vapor retarder.

N. Apply adhesives and mastics at the manufacturer's recommended coverage rate.

O. Apply insulation with integral jackets as follows:

1. Pull jacket tight and smooth.

2. Circumferential Joints: Cover with 3-inch- wide strips, of same material as insulation

jacket. Secure strips with adhesive and outward clinching staples along both edges of

strip and spaced 4 inches o.c.

3. Longitudinal Seams: Overlap jacket seams at least 1-1/2 inches. Apply insulation with

longitudinal seams at bottom of pipe. Clean and dry surface to receive self-sealing lap.

Staple laps with outward clinching staples along edge at 4 inches o.c.

a. Exception: Do not staple longitudinal laps on insulation having a vapor retarder.

4. Vapor-Retarder Mastics: Where vapor retarders are indicated, apply mastic on seams and

joints and at ends adjacent to flanges, unions, valves, and fittings.

5. At penetrations in jackets for thermometers and pressure gages, fill and seal voids with

vapor-retarder mastic.

P. Roof Penetrations: Apply insulation for interior applications to a point even with top of roof

flashing.

1. Seal penetrations with vapor-retarder mastic.

2. Apply insulation for exterior applications tightly joined to interior insulation ends.

3. Extend metal jacket of exterior insulation outside roof flashing at least 2 inches below top

of roof flashing.

4. Seal metal jacket to roof flashing with vapor-retarder mastic.

Q. Exterior Wall Penetrations: For penetrations of below-grade exterior walls, terminate insulation

flush with mechanical sleeve seal. Seal terminations with vapor-retarder mastic.

R. Interior Wall and Partition Penetrations: Apply insulation continuously through walls and

floors.

S. Floor Penetrations: Apply insulation continuously through floor assembly.

1. For insulation with vapor retarders, seal insulation with vapor-retarder mastic where floor

supports penetrate vapor retarder.

3.4 MINERAL-FIBER INSULATION APPLICATION

A. Apply insulation to straight pipes and tubes as follows:




1. Secure each layer of preformed pipe insulation to pipe with wire, tape, or bands without

deforming insulation materials.

2. Where vapor retarders are indicated, seal longitudinal seams and end joints with vapor-

retarder mastic. Apply vapor retarder to ends of insulation at intervals of 15 to 20 feet to

form a vapor retarder between pipe insulation segments.

3. For insulation with factory-applied jackets, secure laps with outward clinched staples at 6

inches o.c.

4. For insulation with factory-applied jackets with vapor retarders, do not staple longitudinal

tabs but secure tabs with additional adhesive as recommended by the insulation material

manufacturer and seal with vapor-retarder mastic.

B. Apply insulation to flanges as follows:

1. Apply preformed pipe insulation to outer diameter of pipe flange.

2. Make width of insulation segment the same as overall width of the flange and bolts, plus

twice the thickness of the pipe insulation.

3. Fill voids between inner circumference of flange insulation and outer circumference of

adjacent straight pipe segments with mineral-fiber blanket insulation.

4. Apply canvas jacket material with manufacturer's recommended adhesive, overlapping

seams at least 1 inch, and seal joints with vapor-retarder mastic.

C. Apply insulation to fittings and elbows as follows:

1. Apply premolded insulation sections of the same material as straight segments of pipe

insulation when available. Secure according to manufacturer's written instructions.

2. When premolded insulation elbows and fittings are not available, apply mitered sections

of pipe insulation, or glass-fiber blanket insulation, to a thickness equal to adjoining pipe

insulation. Secure insulation materials with wire, tape, or bands.

3. Cover fittings with standard PVC fitting covers.

4. Cover fittings with heavy PVC fitting covers. Overlap PVC covers on pipe insulation

jackets at least 1 inch at each end. Secure fitting covers with manufacturer's attachments

and accessories. Seal seams with tape and vapor-retarder mastic.

D. Apply insulation to valves and specialties as follows:

1. Apply premolded insulation sections of the same material as straight segments of pipe

insulation when available. Secure according to manufacturer's written instructions.

2. When premolded insulation sections are not available, apply glass-fiber blanket

insulation to valve body. Arrange insulation to permit access to packing and to allow

valve operation without disturbing insulation. For check valves, arrange insulation for

access to stainer basket without disturbing insulation.

3. Apply insulation to flanges as specified for flange insulation application.

4. Use preformed standard PVC fitting covers for valve sizes where available. Secure

fitting covers with manufacturer's attachments and accessories. Seal seams with tape and

vapor-retarder mastic.

5. Use preformed heavy PVC fitting covers for valve sizes where available. Secure fitting

covers with manufacturer's attachments and accessories. Seal seams with tape and vapor-

retarder mastic.

6. For larger sizes where PVC fitting covers are not available, seal insulation with canvas

jacket and sealing compound recommended by the insulation material manufacturer.




3.5 FLEXIBLE ELASTOMERIC THERMAL INSULATION APPLICATION

A. Apply insulation to straight pipes and tubes as follows:

1. Follow manufacturer's written instructions for applying insulation.

2. Seal longitudinal seams and end joints with manufacturer's recommended adhesive.

Cement to avoid openings in insulation that will allow passage of air to the pipe surface.

B. Apply insulation to flanges as follows:

1. Apply pipe insulation to outer diameter of pipe flange.

2. Make width of insulation segment the same as overall width of the flange and bolts, plus

twice the thickness of the pipe insulation.

3. Fill voids between inner circumference of flange insulation and outer circumference of

adjacent straight pipe segments with cut sections of sheet insulation of the same thickness

as pipe insulation.

4. Secure insulation to flanges and seal seams with manufacturer's recommended adhesive.


C. Apply insulation to fittings and elbows as follows:

1. Apply mitered sections of pipe insulation.

2. Secure insulation materials and seal seams with manufacturer's recommended adhesive.


D. Apply insulation to valves and specialties as follows:

1. Apply preformed valve covers manufactured of the same material as pipe insulation and

attached according to the manufacturer's written instructions.

2. Apply cut segments of pipe and sheet insulation to valve body. Arrange insulation to

permit access to packing and to allow valve operation without disturbing insulation. For

check valves, fabricate removable sections of insulation arranged to allow access to

strainer basket.

3. For check valves, insulated over value including flanges.

4. For strainers, insulate basket. Provide removable cap for access to basket flanges for

maintenance.

5. Apply insulation to flanges as specified for flange insulation application.

6. Secure insulation to valves and specialties and seal seams with manufacturer's

recommended adhesive. Cement to avoid openings in insulation that will allow passage

of air to the pipe surface.

3.6 FIELD-APPLIED JACKET INSTALLATION

A. Where metal jackets are indicated, install with 2-inch overlap at longitudinal seams and end

joints. Overlap longitudinal seams arranged to shed water. Seal end joints with weatherproof

sealant recommended by insulation manufacturer. Secure jacket with stainless-steel bands 12

inches o.c. and at end joints.




3.7 FINISHES

A. Flexible Elastomeric Thermal Insulation: After adhesive has fully cured, apply two coats of the

insulation manufacturer's recommended protective coating.

3.8 PIPING SYSTEM APPLICATIONS

A. Insulation materials and thicknesses are specified in schedules at the end of this Section.

B. Items Not Insulated: Unless otherwise indicated, do not apply insulation to the following

systems, materials, and equipment:

1. Flexible connectors.

2. Vibration-control devices.

3. Fire-suppression piping.

4. Drainage piping located in crawl spaces, unless otherwise indicated.

5. Below-grade piping, unless otherwise indicated.

6. Chrome-plated pipes and fittings, unless potential for personnel injury.

7. Air chambers, unions, strainers, check valves, plug valves, and flow regulators.

3.9 INSULATION APPLICATION SCHEDULE, GENERAL

A. Refer to insulation application schedules for required insulation materials, vapor retarders, and

field-applied jackets.

B. Application schedules identify piping system and indicate pipe size ranges and material,

thickness, and jacket requirements.

3.10 INTERIOR INSULATION APPLICATION SCHEDULE

A. Service: Domestic cold water makeup.


2. Insulation Material: Elastomeric.

3. Insulation Thickness: Apply the following insulation thicknesses:

a. All pipe sizes ½-inch thick.

4. Vapor Retarder Required: Yes.

5. Finish: Protective coating.

B. Service: Chilled-water supply and return.


2. Insulation Material: Flexible elastomeric.

3. Insulation Thickness: Apply the following insulation thicknesses:

a. Steel Pipe, 1” diameter and smaller: ½-inch thick.

b. Steel Pipe, 1-1/4” to 2” diameter: ¾-inch thick.




c. Steel Pipe, 2-1/2” diameter and larger: 1-½ inch thick.

4. Vapor Retarder Required: Yes.

5. Finish: Protective coating.

C. Service: Condenser-water supply and return.


2. Insulation Material: None required.




HVAC INSTRUMENTATION AND CONTROLS 230923-1

SECTION 230923 – HVAC INSTRUMENTATION AND CONTROLS

PART 1 - GENERAL

1.1 SUMMARY


1. DDC system for monitoring and controlling of HVAC systems.

2. Programming and interface of equipment with existing METASYS system to be

performed by Illinois State University.

3. Coordinate chiller, cooling tower, and pump interfaces with Illinois State University

staff.

B. Delivery of selected control devices to equipment and systems manufacturers for factory

installation and to HVAC systems installers for field installation.

C. Interface with Campus METASYS.

1. ISU’s METASYS Building Automation System and the existing METASYS Operational

Workstations will be utilized to access all control functions for this project including

system graphics and alarms.

1.2 DEFINITIONS

A. DDC: Direct digital control.

B. I/O: Input/output.

C. LonWorks: A control network technology platform for designing and implementing

interoperable control devices and networks.

D. MS/TP: Master slave/token passing.

E. PC: Personal computer.

F. PID: Proportional plus integral plus derivative.

G. RTD: Resistance temperature detector.

1.3 SUBMITTALS

A. Product Data: Include manufacturer's technical literature for each control device. Indicate

dimensions, capacities, performance characteristics, electrical characteristics, finishes for

materials, and installation and startup instructions for each type of product indicated.



HVAC INSTRUMENTATION AND CONTROLS 230923-2


A. Factory-Mounted Components: Where control devices specified in this Section are indicated to

be factory mounted on equipment, arrange for shipping of control devices to equipment

manufacturer.

1.5 COORDINATION

A. Coordinate supply of conditioned electrical branch circuits for control units.

B. Coordinate equipment control interface with Illinois State University staff.


PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that conditioned power supply is available to control units.




SEQUENCE OF OPERATION 230993-1

SECTION 230993 – SEQUENCE OF OPERATION

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes control sequences for HVAC systems, subsystems, and equipment.

1.2 DEFINITIONS

A. DDC: Direct digital control.

B. VAV: Variable air volume.

1.3 CHILLED-WATER, CONDENSER-WATER TEMPERATURE-CONTROL SEQUENCE

A. The system shall consist of four water cooled chillers (CH-1, CH-2, CH-3, CH-4), associated

cooling towers (CT-1, CT-2, CT-3, CT-4), constant speed chiller pump for each chiller (CHP-1,

CHP-2, CHP-3, CHP-5), one constant speed condenser water pump for each chiller (CWP-1,

CWP-2, CWP-3, CWP-4), two full capacity variable speed chilled water secondary pumps

(CHP-4A, CHP-4B), equipment control panels, DDC system controls, piping and control

valves.

B. Each pump, chiller, and cooling tower shall operate through an individual “ON-OFF-AUTO”

control point function at the operator’s workstation. In the “ON” position the equipment shall

run continuously. In the “AUTO” position the equipment shall be under plant chilled water

system control. The chilled water system (central plant) shall operate through an “ON-OFF”

control point function at the building automation workstations. In the “ON” position the chilled

water system (central plant) shall start and operate as required to meet the chilled water set

point. Chillers and associated equipment shall be staged on and off automatically to maintain

central plant chilled water supply temperature set point.

C. The distribution system consists of a 2-pipe system with two-way chilled water control valves at

the piping bridge connections at Watterson Towers and Stevenson Hall. Control valve selection

shall be based on the chilled water flow rate indicated on equipment schedules. The chilled

water supply temperature shall be fully adjustable through the building automation workstations

(initial set point shall be 42°F). The constant speed pumps shall be controlled individually by

an “ON-OFF-AUTO” control point function through building automation workstation. In the

“AUTO” mode, the associated chiller pump and condenser water pump shall be under control of

the associated water chiller. After the chiller has received a signal to start, the associated chiller

and condenser water pumps shall start. After the chiller differential pressure switches confirm

flow through the chiller for both chilled water and condenser water, the chiller shall be allowed

to start. If after the chiller is running there is a loss of chilled water or condenser water flow

through the chiller, the chiller shall be de-energized and an alarm condition shall be initiated at

the building automation workstations. Provide time delays in the control sequence to allow the




pumps and chiller to be started without spurious trips from water flow switches. Time delay

period shall be sufficient to allow for stabilization of system operation.

D. Condenser water temperature control shall consist of two control strategies. (1) Airside

Control: As the temperature leaving the cooling tower basin drops the fan (VFD) shall slow

down until the fan completely drops out of the system operation. If the water temperature

continues to drop despite exhausting airside control the water temperature must be maintained

by the following waterside control. (2) Waterside Control: Once airside control has been

exhausted and the cooling tower fan is “OFF” and the water temperature leaving the cooling

tower basin continues to drop, the water through the cooling tower shall be diverted and allowed

to bypass the cooling tower (100% bypass required). This will permit the water temperature to

slowly rise (in bypass mode) until it needs to be cooled again. At this point the bypass valve

shall open 100% and allow full design flow to enter the cooling tower and begin cooling. No

fan operation shall be allowed until the temperature continues to rise and the water temperature

cannot be controlled by waterside control. As an additional safety measure, interlock the fan

motor controls with the bypass valve. If freezing on the tower occurs, allow for manual fan

reversal to take place.

E. Building Automation Workstations: In addition to items specifically indicated in sequence of

operation display the following data:

1. System graphic.

2. Outside temperature.

3. Chiller on-off status (each chiller).

4. Cooling Tower on-off status (each cooling tower).

5. Cooling Tower fan Speed (% of full speed) (each cooling tower).

6. Entering chilled-water temperature (entering each chiller).

7. Leaving chilled-water temperature set point (leaving each chiller).

8. Leaving chilled-water temperature (leaving each chiller).

9. Entering condenser-water temperature (entering each chiller).

10. Condenser water supply temperature set point (each cooling tower).

11. Leaving condenser-water temperature (leaving each chiller)

12. Chilled-water pump on-off auto switch (each pump).

13. Condenser-water pump on-off-auto switch (each pump).

14. Plant system chilled-water supply and return temperature (entering & leaving central

plant).

15. Chilled-water temperature set point control-point adjustment (each chiller).

16. System capacity in tons, and % of full capacity.

17. Operating status of chilled-water pump (each pump).

18. Operating status of condenser-water pump (each pump).

19. Plant system chilled- water supply temperature set point control-point adjustment





PART 3 - EXECUTION

3.1 SOFTWARE ALARMS

A. Program software alarms for all monitor and control points that are outside of normal operating

parameters.

B. Alarms that shutdown equipment shall be manually reset before equipment may be restarted.




HYDRONIC PIPING 232113-1

SECTION 232113 – HYDRONIC PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes pipe and fitting materials and joining methods for the following:

a. Chilled water piping.

b. Condenser water piping.

c. Makeup water piping

d. Hydronic accessories including strainers, flexible connectors.


A. Hydronic piping components and installation shall be capable of withstanding the following

minimum working pressure and temperature:

1. Chilled-Water Piping: 150 psig at 200 deg F.

2. Condenser-Water Piping: 150 psig at 150 deg F.

1.3 SUBMITTALS

A. Product Data: For each type of the following:

1. Valves. Include flow and pressure drop curves based on manufacturer's testing for

calibrated-orifice balancing valves and automatic flow-control valves.

2. Air control devices.

3. Hydronic specialties.

B. Field quality-control test reports.

C. Operation and Maintenance Data: For air control devices, hydronic specialties, and special-duty

valves to include in emergency, operation, and maintenance manuals.


A. Steel Support Welding: Qualify processes and operators according to AWS D1.1/D1.1M,

"Structural Welding Code - Steel."

B. Welding: Qualify processes and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.

1. Comply with provisions in ASME B31 Series, "Code for Pressure Piping."

2. Certify that each welder has passed AWS qualification tests for welding processes

involved and that certification is current.




C. ASME Compliance: Comply with ASME B31.9, "Building Services Piping," for materials,

products, and installation. Safety valves and pressure vessels shall bear the appropriate ASME

label. Fabricate and stamp air separators and expansion tanks to comply with ASME Boiler and

Pressure Vessel Code: Section VIII, Division 1.

D. Codes and Standards for Underground Chilled-Water Pipe: Comply with the requirements of

the latest edition of the following:

1. Standard Specifications for Water and Sewer Main Construction in Illinois, Fifth Edition,

hereinafter referred to as the Standard Specifications, shall apply as modified below and

by the Special Provisions Modifying these Standard Specifications.

a. Pertinent standard drawings contained contained in the Specifications shall also

apply except as modified in the Special Provisions or on the Plan Sheets.

b. Division I and VI shall not apply.

c. Reference sections to measurement and basis of payment do not apply.

PART 2 - PRODUCTS

2.1 COPPER TUBE AND FITTINGS

A. Drawn-Temper Copper Tubing: ASTM B 88, Type L.

B. Annealed-Temper Copper Tubing: ASTM B 88, Type K.

C. Wrought-Copper Fittings: ASME B16.22.

2.2 STEEL PIPE AND FITTINGS

A. Steel Pipe: ASTM A 53/A 53M, black steel with plain ends; type, grade, and wall thickness as

indicated in Part 3 "Piping Applications" Article.

B. Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 as indicated in Part 3 "Piping

Applications" Article.

C. Malleable-Iron Unions: ASME B16.39; Classes 150 as indicated in Part 3 "Piping


D. Cast-Iron Pipe Flanges and Flanged Fittings: ASME B16.1, Classes 25, 125, and 250; raised

ground face, and bolt holes spot faced as indicated in Part 3 "Piping Applications" Article.

E. Wrought-Steel Fittings: ASTM A 234/A 234M, wall thickness to match adjoining pipe.

F. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASME B16.5, including bolts,

nuts, and gaskets of the following material group, end connections, and facings:

1. Material Group: 1.1.

2. End Connections: Butt welding.

3. Facings: Raised face.




G. Grooved Mechanical-Joint Fittings and Couplings:


following:

a. Central Sprinkler Company; a division of Tyco Fire & Building Products.

b. National Fittings, Inc.

c. Victaulic Company of America.

2. Joint Fittings: ASTM A 536, Grade 65-45-12 ductile iron; ASTM A 47/A 47M,

Grade 32510 malleable iron; ASTM A 53/A 53M, Type F, E, or S, Grade B fabricated

steel; or ASTM A 106, Grade B steel fittings with grooves or shoulders constructed to

accept grooved-end couplings; with nuts, bolts, locking pin, locking toggle, or lugs to

secure grooved pipe and fittings.

3. Couplings: Ductile- or malleable-iron housing and synthetic rubber gasket of central

cavity pressure-responsive design; with nuts, bolts, locking pin, locking toggle, or lugs to

secure grooved pipe and fittings.

H. Steel Pipe Nipples: ASTM A 733, made of same materials and wall thicknesses as pipe in

which they are installed.

2.3 PLASTIC PIPE AND FITTINGS

A. PVC Plastic Pipe: ASTM D 1785, Schedule 80, plain ends as indicated in Part 3 "Piping


B. PVC Plastic Pipe Fittings: Socket-type pipe fittings, ASTM D 2467 for Schedule 80 pipe.

2.4 JOINING MATERIALS

A. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system

contents.

1. ASME B16.21, nonmetallic, flat, asbestos free, 1/8-inch maximum thickness unless

thickness or specific material is indicated.

a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

B. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.

C. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and material recommended by piping

system manufacturer, unless otherwise indicated.

D. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to

ASTM B 813.

E. Welding Filler Metals: Comply with AWS D10.12/D10.12M for welding materials appropriate

for wall thickness and chemical analysis of steel pipe being welded.




F. Solvent Cements for Joining Plastic Piping:

1. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

G. Gasket Material: Thickness, material, and type suitable for fluid to be handled and working

temperatures and pressures.

2.5 VALVES

A. Globe, Check, Ball, and Butterfly Valves: Comply with requirements specified in Division 23

Section "Valves."

2.6 AIR CONTROL DEVICES


following:

1. Amtrol, Inc.

2. Armstrong Pumps, Inc.

3. Bell & Gossett Domestic Pump; a division of ITT Industries.

4. Taco.

B. Manual Air Vents:

1. Body: Bronze.

2. Internal Parts: Nonferrous.

3. Operator: Screwdriver or thumbscrew.

4. Inlet Connection: NPS 1/2.

5. Discharge Connection: NPS 1/8.

6. CWP Rating: 150 psig.

7. Maximum Operating Temperature: 225 deg F.

C. Automatic Air Vents:

1. Body: Bronze or cast iron.

2. Internal Parts: Nonferrous.

3. Operator: Noncorrosive metal float.

4. Inlet Connection: NPS 1/2.

5. Discharge Connection: NPS 1/4.



2.7 HYDRONIC PIPING SPECIALTIES

A. Y-Pattern Strainers:

1. Body: ASTM A 126, Class B, cast iron with bolted cover and bottom drain connection.

2. End Connections: Threaded ends for NPS 2 and smaller; flanged ends for NPS 2-1/2 and

larger.




3. Strainer Screen: 60-mesh startup strainer, and perforated stainless-steel basket with 50

percent free area.


B. Spherical, Rubber, Flexible Connectors:

1. Body: Fiber-reinforced rubber body.

2. End Connections: Steel flanges drilled to align with Classes 150 and 300 steel flanges.

3. Performance: Capable of misalignment.



PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Chilled-water piping, aboveground, NPS 2 and smaller, shall be any of the following:

1. Schedule 40 steel pipe; Class 150, malleable-iron fittings; cast-iron flanges and flange

fittings; and threaded joints.

B. Chilled-water piping, aboveground, NPS 2-1/2 and larger, shall be the following:

1. Schedule 40 steel pipe; grooved, mechanical joint coupling and fittings; and grooved,

mechanical joints.

C. Condenser-water piping, aboveground, NPS 2 and smaller, shall be the following:

1. Schedule 80 PVC plastic pipe and fittings and solvent-welded joints.

D. Condenser-water piping, aboveground, NPS 2-1/2 and larger, shall be the following:

1. Schedule 80 PVC plastic pipe and fittings and solvent-welded joints.

E. Makeup-water piping installed aboveground shall be the following:

1. Type L, drawn-temper copper tubing, wrought-copper fittings, and soldered joints.

F. Air-Vent Piping:

1. Inlet: Same as service where installed with metal-to-plastic transition fittings for plastic

piping systems according to the piping manufacturer's written instructions.

2. Outlet: Type K, annealed-temper copper tubing with soldered or flared joints.

3.2 VALVE APPLICATIONS

A. Install shutoff-duty valves at each branch connection to supply mains, and at supply connection

to each piece of equipment.




B. Install check valves at each pump discharge and elsewhere as required to control flow direction.

C. Install pressure-reducing valves at makeup-water connection to regulate system fill pressure.

3.3 PIPING INSTALLATIONS – ABOVE GROUND

A. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping

systems. Indicate piping locations and arrangements if such were used to size pipe and

calculate friction loss, expansion, pump sizing, and other design considerations. Install piping

as indicated unless deviations to layout are approved on Coordination Drawings.

B. Install piping in concealed locations, unless otherwise indicated and except in equipment rooms

and service areas.

C. Install piping indicated to be exposed and piping in equipment rooms and service areas at right

angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated

otherwise.

D. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.

E. Install piping to permit valve servicing.

F. Install piping at indicated slopes.

G. Install piping free of sags and bends.

H. Install fittings for changes in direction and branch connections.

I. Install piping to allow application of insulation.

J. Select system components with pressure rating equal to or greater than system operating

pressure.

K. Install groups of pipes parallel to each other, spaced to permit applying insulation and servicing

of valves.

L. Install drains, consisting of a tee fitting, NPS 3/4 ball valve, and short NPS 3/4 threaded nipple

with cap, at low points in piping system mains and elsewhere as required for system drainage.

M. Install piping at a uniform grade of 0.2 percent upward in direction of flow.

N. Reduce pipe sizes using eccentric reducer fitting installed with level side up.

O. Install valves according to Division 23 Section "Valves."

P. Install unions in piping, NPS 2 and smaller, adjacent to valves, at final connections of

equipment, and elsewhere as indicated.

Q. Install flanges in piping, NPS 2-1/2 and larger, at final connections of equipment and elsewhere

as indicated.




R. Install strainers on inlet side of each control valve, pressure-reducing valve, solenoid valve, in-

line pump, and elsewhere as indicated. Install NPS 3/4 nipple and ball valve in blowdown

connection of strainers NPS 2 and larger. Match size of strainer blowoff connection for

strainers smaller than NPS 2.

S. Identify piping as specified in Division 15 Section "Mechanical Identification."

3.4 HANGERS AND SUPPORTS

A. Hanger, support, and anchor devices are specified in Division 15 Section "Hangers and

Supports." Comply with the following requirements for maximum spacing of supports.

B. Install the following pipe attachments:

1. Adjustable steel clevis hangers for individual horizontal piping less than 20 feet long.

2. Adjustable roller hangers and spring hangers for individual horizontal piping 20 feet or

longer.

3. Pipe Roller: MSS SP-58, Type 44 for multiple horizontal piping 20 feet or longer,

supported on a trapeze.

4. Spring hangers to support vertical runs.

5. Provide copper-clad hangers and supports for hangers and supports in direct contact with

copper pipe.

6. On plastic pipe, install pads or cushions on bearing surfaces to prevent hanger from

scratching pipe.

C. Install hangers for steel piping with the following maximum spacing and minimum rod sizes:

1. NPS 3/4: Maximum span, 7 feet; minimum rod size, 1/4 inch.

2. NPS 1: Maximum span, 7 feet; minimum rod size, 1/4 inch.

3. NPS 1-1/2: Maximum span, 9 feet; minimum rod size, 3/8 inch.









12. NPS 14: Maximum span, 25 feet; minimum rod size, 1 inch.

13. NPS 16: Maximum span, 27 feet; minimum rod size, 1 inch.

D. Install hangers for drawn-temper copper piping with the following maximum spacing and

minimum rod sizes:

1. NPS 3/4: Maximum span, 5 feet; minimum rod size, 1/4 inch.







E. Plastic Piping Hanger Spacing: Space hangers according to pipe manufacturer's written

instructions for service conditions. Avoid point loading. Space and install hangers with the

fewest practical rigid anchor points.

F. Support vertical runs at roof, at each floor, and at 10-foot intervals between floors.

3.5 PIPE JOINT CONSTRUCTION

A. Join pipe and fittings according to the following requirements and Division 15 Sections

specifying piping systems.

B. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

C. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

D. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube

end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using

lead-free solder alloy complying with ASTM B 32.

E. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore

full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads unless dry seal

threading is specified.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.

F. Welded Joints: Construct joints according to AWS D10.12/D10.12M, using qualified processes

and welding operators according to Part 1 "Quality Assurance" Article.

G. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service

application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.

H. Plastic Piping Solvent-Cemented Joints: Clean and dry joining surfaces. Join pipe and fittings

according to the following:

1. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent

cements.

2. PVC Pressure Piping: Join ASTM D 1785 schedule number, PVC pipe and PVC socket

fittings according to ASTM D 2672. Join other-than-schedule number PVC pipe and

socket fittings according to ASTM D 2855.

I. Grooved Joints: Assemble joints with coupling and gasket, lubricant, and bolts. Cut or roll

grooves in ends of pipe based on pipe and coupling manufacturer's written instructions for pipe

wall thickness. Use grooved-end fittings and rigid, grooved-end-pipe couplings.




3.6 HYDRONIC SPECIALTIES INSTALLATION

A. Install manual air vents at high points in piping and elsewhere as required for system air

venting.

B. Install automatic air vents at high points of system piping in mechanical equipment rooms only.


A. Prepare hydronic piping according to ASME B31.9 and as follows:

1. Leave joints, including welds, uninsulated and exposed for examination during test.

2. Provide temporary restraints for expansion joints that cannot sustain reactions due to test

pressure. If temporary restraints are impractical, isolate expansion joints from testing.

3. Flush hydronic piping systems with clean water; then remove and clean or replace

strainer screens.

4. Flush piping with clean water to remove weld slage dirt and other construction debris

before making tie-in to existing ISU facility piping.

5. Isolate equipment from piping. If a valve is used to isolate equipment, its closure shall be

capable of sealing against test pressure without damage to valve. Install blinds in flanged

joints to isolate equipment.

6. Install safety valve, set at a pressure no more than one-third higher than test pressure, to

protect against damage by expanding liquid or other source of overpressure during test.

B. Perform the following tests on hydronic piping:

1. Use ambient temperature water as a testing medium unless there is risk of damage due to

freezing. Another liquid that is safe for workers and compatible with piping may be

used.

2. While filling system, use vents installed at high points of system to release air. Use

drains installed at low points for complete draining of test liquid.

3. Isolate expansion tanks and determine that hydronic system is full of water.

4. Subject piping system to hydrostatic test pressure that is not less than 1.5 times the

system's working pressure. Test pressure shall not exceed maximum pressure for any

vessel, pump, valve, or other component in system under test. Verify that stress due to

pressure at bottom of vertical runs does not exceed 90 percent of specified minimum

yield strength or 1.7 times "SE" value in Appendix A in ASME B31.9, "Building

Services Piping."

5. After hydrostatic test pressure has been applied for at least 10 minutes, examine piping,

joints, and connections for leakage. Eliminate leaks by tightening, repairing, or replacing

components, and repeat hydrostatic test until there are no leaks.

6. Prepare written report of testing.

C. Perform the following before operating the system:

1. Open manual valves fully.

2. Inspect pumps for proper rotation.

3. Set makeup pressure-reducing valves for required system pressure.

4. Inspect air vents at high points of system and determine if all are installed and operating

freely (automatic type), or bleed air completely (manual type).




5. Set temperature controls so all coils are calling for full flow.

6. Inspect and set operating temperatures of hydronic equipment, such as chillers, cooling

towers, to specified values.

7. Verify lubrication of motors and bearings.

3.8 CLEANUP

A. Excess Excavation: All excess excavated materials shall become the responsibility of the

Contractor for disposal off the construction site as approved by the Architect/Engineer except

that the Owner reserves the right to have selected excavated materials deposited at designated

locations within the Facility Limits at no additional cost to Owner.




HYDRONIC PUMPS 232123-1

SECTION 232123 – HYDRONIC PUMPS

PART 1 - GENERAL

1.1 SUMMARY


1. Separately coupled, vertically mounted, in-line centrifugal pumps.

1.2 DEFINITIONS

A. Buna-N: Nitrile rubber.

B. EPT: Ethylene propylene terpolymer.

1.3 SUBMITTALS

A. Product Data: Include certified performance curves and rated capacities, operating

characteristics, furnished specialties, final impeller dimensions, and accessories for each type of

product indicated. Indicate pump's operating point on curves.

B. Shop Drawings: Show pump layout and connections. Include setting drawings with templates

for installing foundation and anchor bolts and other anchorages.

1. Wiring Diagrams: Power, signal, and control wiring.

C. Operation and Maintenance Data: For pumps to include in emergency, operation, and

maintenance manuals.


A. Source Limitations: Obtain hydronic pumps through one source from a single manufacturer.

B. Product Options: Drawings indicate size, profiles, and dimensional requirements of hydronic

pumps and are based on the specific system indicated. Refer to Division 1 Section "Product

Requirements."

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,

Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for

intended use.

D. UL Compliance: Comply with UL 778 for motor-operated water pumps.





A. Manufacturer's Preparation for Shipping: Clean flanges and exposed machined metal surfaces

and treat with anticorrosion compound after assembly and testing. Protect flanges, pipe

openings, and nozzles with wooden flange covers or with screwed-in plugs.

B. Store pumps in dry location.

C. Retain protective covers for flanges and protective coatings during storage.

D. Protect bearings and couplings against damage from sand, grit, and other foreign matter.

E. Comply with pump manufacturer's written rigging instructions.

1.6 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete,

reinforcement, and formwork requirements are specified in Division 3.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


product selection:



2.2 SEPARATELY COUPLED, VERTICAL, IN-LINE CENTRIFUGAL PUMPS

A. Manufacturers:

1. Armstrong Pumps Inc.

2. Aurora Pump; Division of Pentair Pump Group.

3. Bell & Gossett; Div. of ITT Industries.

B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, separately coupled,

in-line pump as defined in HI 1.1-1.2 and HI 1.3; designed for installation with pump and motor

shafts mounted vertically. Rate pump for 125-psig minimum working pressure and a

continuous water temperature of 225 deg F.

C. Pump Construction:

1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and outlet.

2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft,

and secured with a locking cap screw. Trim impeller to match specified performance.

3. Pump Shaft: ASTM A276, Type 416 stainless steel.




4. Mechanical Seal: Stainless steel outside multi-spring balanced type with viton secondary

seal. Bronze gland plate, Factory installed flush line with manual vent.

D. Shaft Coupling: Axially split spacer coupling.

E. Motor: Single speed or variable as indicated, with permanently lubricated ball bearings, unless

otherwise indicated; rigidly mounted to pump casing with lifting eye and supporting lugs in

motor enclosure.

2.3 PUMP SPECIALTY FITTINGS

A. Suction Diffuser: Angle pattern, 175-psig pressure rating, cast-iron body and end cap, pump-

inlet fitting; with bronze startup and bronze or stainless-steel permanent strainers; bronze or

stainless-steel straightening vanes; drain plug; and factory-fabricated support.

B. Triple-Duty Valve: Angle or straight pattern, 175-psig pressure rating, cast-iron body, pump-

discharge fitting; with drain plug and bronze-fitted shutoff, balancing, and check valve features.

Brass gage ports with integral check valve, and orifice for flow measurement.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine equipment foundations and anchor-bolt locations for compliance with requirements for

installation tolerances and other conditions affecting performance of work.

B. Examine roughing-in for piping systems to verify actual locations of piping connections before

pump installation.

C. Examine foundations for suitable conditions where pumps are to be installed.

D. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 CONCRETE BASES

A. Install concrete bases of dimensions indicated for pumps and controllers. Refer to Division 23

Section "Basic Mechanical Materials and Methods."


install dowel rods on 18-inch centers around full perimeter of base.

2. For supported equipment, install epoxy-coated anchor bolts that extend through concrete


3. Place and secure anchorage devices. Use setting drawings, templates, diagrams,



B. Cast-in-place concrete materials and placement requirements are specified in Division 3.




3.3 PUMP INSTALLATION

A. Comply with HI 2.4.

B. Install pumps with access for periodic maintenance including removal of motors, impellers,

couplings, and accessories.

C. Independently support pumps and piping so weight of piping is not supported by pumps and

weight of pumps is not supported by piping.

D. Support vertically mounted, in-line centrifugal pumps with support base under the pump

accessories. Install pumps with motor and pump shafts vertical.

3.4 CONNECTIONS



B. Install piping adjacent to machine to allow service and maintenance.

C. Connect piping to pumps. Install valves that are same size as piping connected to pumps.

D. Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles.

E. Install triple-duty valve on discharge side of pumps.

F. Install suction diffuser and shutoff valve on suction side of pumps.

G. Install pressure gages on pump suction and discharge, at integral pressure-gage tapping, or

install single gage with multiple input selector valve.

H. Install electrical connections for power, controls, and devices.

3.5 STARTUP SERVICE

Engage a factory-authorized service representative to perform startup service.

1. Complete installation and startup checks according to manufacturer's written instructions.

2. Check piping connections for tightness.

3. Clean strainers on suction piping.

4. Perform the following startup checks for each pump before starting:

a. Verify bearing lubrication.

b. Verify that pump is free to rotate by hand and that pump for handling hot liquid is

free to rotate with pump hot and cold. If pump is bound or drags, do not operate

until cause of trouble is determined and corrected.

c. Verify that pump is rotating in the correct direction.




5. Prime pump by opening suction valves and closing drains, and prepare pump for

operation.

6. Start motor.

7. Open discharge valve slowly.

3.6 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to

adjust, operate, and maintain hydronic pumps.




HVAC WATER TREATMENT 232500-1

SECTION 232500 – HVAC WATER TREATMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes the following HVAC water-treatment systems:

1. Manual and automatic chemical-feed equipment and controls.

2. Chemicals.

1.2 DEFINITIONS

A. EEPROM: Electrically erasable, programmable read-only memory.

B. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 V or

for remote-control, signaling power-limited circuits.

C. RO: Reverse osmosis.

D. TDS: Total dissolved solids.

E. UV: Ultraviolet.


A. Water quality for HVAC systems shall minimize corrosion, scale buildup, and biological

growth for optimum efficiency of HVAC equipment without creating a hazard to operating

personnel or the environment.

B. Base HVAC water treatment on quality of water available at Project site, HVAC system

equipment material characteristics and functional performance characteristics, operating

personnel capabilities, and requirements and guidelines of authorities having jurisdiction.

C. Closed hydronic systems, including chilled water.

1. Maintain system essentially free of scale, corrosion and fouling.

D. Open hydronic systems, including condenser water.

1. Maintain system essentially free of scale and total suspended solids.

2. Control algae, bacteria, and fungi.




1.4 SUBMITTALS

A. Product Data: Include rated capacities, operating characteristics, furnished specialties, and

accessories for the following products:

1. Water meters.

2. Inhibitor injection timers.

3. pH controllers.

4. TDS controllers.

5. Biocide feeder timers.

6. Chemical solution tanks.

7. Injection pumps.

8. Bag- or cartridge-type filters.

B. Shop Drawings: Pretreatment and chemical treatment equipment showing tanks, maintenance

space required, and piping connections to HVAC systems. Include plans, elevations, sections,

details, and attachments to other work.

1. Wiring Diagrams: Power and control wiring.

C. Field quality-control test reports.

D. Operation and Maintenance Data: For sensors, injection pumps, water filtration units, and

controllers to include in emergency, operation, and maintenance manuals.

E. Other Informational Submittals:

1. Water-Treatment Program: Written sequence of operation on an annual basis for the

application equipment required to achieve water quality defined in the "Performance

Requirements" Article above.

2. Water Analysis: Illustrate water quality available at Project site.

3. Passivation Confirmation Report: Verify passivation of galvanized-steel surfaces, and

confirm this observation in a letter to Architect.


A. HVAC Water-Treatment Service Provider Qualifications: An experienced HVAC water-

treatment service provider capable of analyzing water qualities, installing water-treatment

equipment, and applying water treatment as specified in this Section.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,

Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for

intended use.

1.6 MAINTENANCE SERVICE

A. Scope of Maintenance Service: Provide chemicals and service program to maintain water

conditions required above to inhibit corrosion, scale formation, and biological growth for

chilled-water piping, condenser-water piping and equipment. Services and chemicals shall be




provided for a period of one year from date of Substantial Completion, and shall include the

following:

1. Initial water analysis and HVAC water-treatment recommendations.

2. Startup assistance for Contractor to flush the systems, clean with detergents, and initially

fill systems with required chemical treatment prior to operation.

3. Periodic field service and consultation.

4. Customer report charts and log sheets.

5. Laboratory technical analysis.

6. Analyses and reports of all chemical items concerning safety and compliance with

government regulations.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


following:

1. Aqua-Chem, Inc.; Cleaver-Brooks Div.

2. GE Betz.

3. H-O-H Chemicals, Inc.

4. ONDEO Nalco Company.

2.2 AUTOMATIC CHEMICAL-FEED EQUIPMENT

A. Water Meter: Neptune T-10

1. AWWA C700, nutating disc, magnetic-drive, totalization meter.

2. Body: Bronze.

3. Minimum Working-Pressure Rating: 150 psig.

4. Maximum Pressure Loss at Design Flow: 3 psig.

5. Registration: Gallons.

6. End Connections: Threaded.

7. Controls: Flow-control switch with normally open contacts; rated for maximum 10 A,

250-V ac; and that will close at adjustable increments of total flow.

B. Inhibitor Injection Timers:

1. Microprocessor-based controller with LCD display in NEMA 250, Type 12 enclosure

with gasketed and lockable door. Interface for start/stop and status indication at central

workstation as described in Division 15 Section "HVAC Instrumentation and Controls."

2. Programmable timers with infinite adjustment over full range, and mounted in cabinet

with hand-off-auto switches and status lights.

3. Test switch.

4. Hand-off-auto switch for chemical pump.

5. Illuminated legend to indicate feed when pump is activated.




6. Programmable lockout timer with indicator light. Lockout timer to deactivate the pump

and activate alarm circuits.

7. LCD makeup totalizer to measure amount of makeup and bleed-off water from two water

meter inputs.

C. pH Controller:

1. Microprocessor-based controller, 1 percent accuracy in a range from zero to 14 units.

Incorporate solid-state integrated circuits and digital LCD display in NEMA 250,

Type 12 enclosure with gasketed and lockable door. Interface for start/stop and status

indication at central workstation as described in Division 15 Section "HVAC

Instrumentation and Controls."

2. Digital display and touch pad for input.

3. Sensor probe adaptable to sample stream manifold.

4. High, low, and normal pH indication.

5. High or low pH alarm light, trip points field adjustable; with silence switch.

6. Hand-off-auto switch for acid pump.

7. Internal adjustable hysteresis or deadband.

D. TDS Controller:

1. Microprocessor-based controller, 1 percent accuracy in a range from zero to 5000

micromhos. Incorporate solid-state integrated circuits and digital LCD display in

NEMA 250, Type 12 enclosure with gasketed and lockable door. Interface for start/stop

and status indication at central workstation as described in Division 15 Section "HVAC

Instrumentation and Controls."

2. Digital display and touch pad for input.

3. Sensor probe adaptable to sample stream manifold.

4. High, low, and normal conductance indication.

5. High or low conductance alarm light, trip points field adjustable; with silence switch.

6. Hand-off-auto switch for solenoid bleed-off valve.

7. Bleed-off valve activated indication.

8. Internal adjustable hysteresis or deadband.

9. Bleed Valves:

a. Cooling Systems: Forged-brass body, globe pattern, general-purpose solenoid

with continuous-duty coil, or motorized valve.

E. Biocide Feeder Timer:

1. Microprocessor-based controller with digital LCD display in NEMA 250, Type 12

enclosure with gasketed and lockable door. Interface for start/stop and status indication

at central workstation as described in Division 15 Section "HVAC Instrumentation and

Controls."

2. 24-hour timer with 14-day skip feature to permit activation any hour of day.

3. Precision, solid-state, bleed-off lockout timer and clock-controlled biocide pump timer.

Prebleed and bleed lockout timers.

4. Solid-state alternator to enable use of two different formulations.

5. 24-hour display of time of day.

6. 14-day display of day of week.

7. Battery backup so clock is not disturbed by power outages.




8. Hand-off-auto switches for biocide pumps.

9. Biocide A and Biocide B pump running indication.

F. Chemical Solution Tanks:

1. Chemical-resistant reservoirs fabricated from high-density opaque polyethylene with

minimum 110 percent containment vessel.

2. Molded cover.

3. Capacity: 120 gal.

G. Chemical Solution Injection Pumps:

1. Self-priming, positive-displacement; rated for intended chemical with minimum 25

percent safety factor for design pressure and temperature.

2. Adjustable flow rate.

3. Metal and thermoplastic construction.

4. Built-in relief valve.

5. Fully enclosed, continuous-duty, single-phase motor.

6. Mount on pump support bracket above chemical solution tanks.

H. Chemical Solution Tubing: Polyethylene tubing with compression fittings and joints.

I. Injection Assembly:

1. Quill: Minimum NPS 1/2 with insertion length sufficient to discharge into at least 25

percent of pipe diameter.

2. Ball Valve: Two-piece, stainless steel as described in "Stainless-Steel Pipes and Fittings"

Article below; and selected to fit quill.

3. Packing Gland: Mechanical seal on quill of sufficient length to allow quill removal

during system operation.

4. Assembly Pressure/Temperature Rating: Minimum 600 psig at 200 deg F.

2.3 STAINLESS-STEEL PIPES AND FITTINGS

A. Stainless-Steel Tubing: Comply with ASTM A 269, Type 316.

B. Stainless-Steel Fittings: Complying with ASTM A 815/A 815M, Type 316, Grade WP-S.

C. Three-Piece, Full-Port, Stainless-Steel Ball Valves: ASTM A 351, Type 316 stainless-steel

body; ASTM A 276, Type 316 stainless-steel stem and vented ball, threaded body design with

adjustable stem packing, threaded ends, and 150-psig SWP and 600-psig CWP rating.

2.4 CHEMICAL TREATMENT TEST EQUIPMENT

A. Test Kit: Manufacturer-recommended equipment and chemicals in a wall-mounting cabinet for

testing pH, TDS, inhibitor, chloride, alkalinity, and hardness; sulfite and testable polymer tests

for high-pressure boilers, and oxidizing biocide test for open cooling systems.




B. Corrosion Test-Coupon Assembly: Constructed of corrosive-resistant material, complete with

piping, valves, and mild steel and copper coupons. Locate copper coupon downstream from

mild steel coupon in the test-coupon assembly.

1. Four-station rack for closed-loop systems.

2. Four-station rack for open systems.

2.5 CHEMICALS

A. Chemicals shall be as recommended by water-treatment system manufacturer that are

compatible with piping system components and connected equipment, and that can attain water

quality specified in Part 1 "Performance Requirements" Article.

B. Grease, dirt, oil and metallic oxides shall be removed from each closed recirculating water

system using a non-foaming, liquid cleaning agent formulated to lift and disperse organic soil,

and to chelate alkaline earth metals and metallic oxides.

C. Chemicals supplied must match Illinois State University (ISU) current supplier’s chemicals.

The contractor shall confirm with ISU before any chemicals are introduced into any system.

Existing systems could be seriously compromised by new chemicals that are incompatible with

existing chemicals. Therefore, it is MANDATORY that approval by the office of Energy

Management of the chemical treatment strategy and the specific chemicals to be used is

obtained prior to adding chemicals to any system. Bid shall be base on ISU strategies approved

at the time of bidding.

PART 3 - EXECUTION

3.1 CLEANING

A. Grease, dirt, oil and metallic oxides shall be removed from each closed recirculating system.

Equipment shall be provided to meter the water, filter system water, mix and inject the cleaning

solution into the system. Mechanical Contractor shall inform Water Treatment Contractor of all

system materials of construction, to insure chemical cleaner compatibility. A cleaning agent

shall be circulated, wetting all metal surfaces and flushed from the system at completion.

Supervision shall be provided by Water Treatment Contractor.

B. Cleaning Procedure:

1. The system shall be filled through a suitable water meter to determine total water

capacity, taking care to bleed all air.

2. Non-foaming liquid cleaner shall be added to the system at a dosage rate of twenty (20)

gallons per one thousand (1000) gallons of system capacity. The Chemical Water

Treatment Contractor shall verify cleaner strength.

3. Chilled Water Systems shall be circulated for 48 hours.

4. During the cleaning period, system water shall be circulated through the entire system.

Mechanical Contractor shall insure that all small orifices (control valves, strainers, etc.)

remain free of debris. A side stream filter shall be used for solids removal during the




cleaning period. Filter media shall be changed as specified in the Filter Cartridge

specifications.

5. When cleaning is complete, the system shall be drained and flushed with fresh water to

remove the cleaning solution. Flushing shall continue until the total (M) alkalinity of the

system water is within fifty (50) PPM of the total alkalinity of the make-up water.

C. Immediately following completion and verification of flushing, certification records covering

the cleaning operation shall be submitted to the Mechanical Contractor. Records shall include;

System volume, cleaner concentration, circulation time, volume of flush water and final

alkalinity reading. Each system shall then be chemically treated as provided elsewhere in the

specifications.

3.2 WATER ANALYSIS

A. Perform an analysis of supply water to determine quality of water available at Project site.

3.3 INSTALLATION

A. Install chemical application equipment on concrete bases, level and plumb. Maintain

manufacturer's recommended clearances. Arrange units so controls and devices that require

servicing are accessible. Anchor floor-mounting accessories to substrate.

B. Install water testing equipment on wall near water chemical application equipment.

C. Install interconnecting control wiring for chemical treatment controls and sensors.

D. Mount sensors and injectors in piping circuits.

E. Install automatic chemical-feed equipment for condenser water and include the following:

1. Install water meter in makeup water supply.

2. Install water meter in blowdown line.

3. Install inhibitor injection pumps and solution tanks with injection timer sensing contacts

in water meter.

a. Pumps shall operate for timed interval on contact closure at water meter in makeup

water supply connection. Injection pump shall discharge into boiler feedwater tank

or feedwater supply connection at boiler.

4. Install test equipment and provide test-kit to Owner. Install test-coupon assembly in

bypass circuit around circulating pumps, unless otherwise indicated on Drawings.

5. Install TDS controller with sensor and bleed valves.

a. Bleed valves shall cycle to maintain maximum TDS concentration.

6. Install pH sensor and controller with injection pumps and solution tanks.

a. Injector pumps shall operate to maintain required pH.




7. Install biocide feeder alternating timer with two sets of injection pumps and solution

tanks.

a. Injection pumps shall operate to feed biocide on an alternating basis.

3.4 CONNECTIONS



B. Install piping adjacent to equipment to allow service and maintenance.

C. Make piping connections between HVAC water-treatment equipment and dissimilar-metal

piping with dielectric fittings.

D. Install shutoff valves on HVAC water-treatment equipment inlet and outlet. Metal general-duty

valves are specified in Division 15 Section "Valves."

E. Refer to Division 15 Section "Domestic Water Piping Specialties" for backflow preventers

required in makeup water connections to potable-water systems.

F. Confirm applicable electrical requirements in Division 16 Sections for connecting electrical

equipment.

G. Ground equipment according to Division 16 Section "Grounding and Bonding."

H. Connect wiring according to Division 16 Section "Conductors and Cables."


A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect,

test, and adjust components, assemblies, and equipment installations, including connections.

Report results in writing.

B. Perform tests and inspections and prepare test reports.

1. Manufacturer's Field Service: Engage a factory-authorized service representative to

inspect components, assemblies, and equipment installations, including connections, and

to assist in testing.

C. Tests and Inspections:

1. Inspect field-assembled components and equipment installation, including piping and

electrical connections.

2. Inspect piping and equipment to determine that systems and equipment have been

cleaned, flushed, and filled with water, and are fully operational before introducing

chemicals for water-treatment system.

3. Place HVAC water-treatment system into operation and calibrate controls during the

preliminary phase of HVAC systems' startup procedures.




4. Do not enclose, cover, or put piping into operation until it is tested and satisfactory test

results are achieved.

5. Test for leaks and defects. If testing is performed in segments, submit separate report for

each test, complete with diagram of portion of piping tested.

6. Leave uncovered and unconcealed new, altered, extended, and replaced water piping until

it has been tested and approved. Expose work that has been covered or concealed before

it has been tested and approved.

7. Cap and subject piping to static water pressure of 50 psig above operating pressure,

without exceeding pressure rating of piping system materials. Isolate test source and

allow test pressure to stand for four hours. Leaks and loss in test pressure constitute

defects.

8. Repair leaks and defects with new materials and retest piping until no leaks exist.

D. Remove and replace malfunctioning units and retest as specified above.

E. At six-week intervals following Substantial Completion, perform separate water analyses on

hydronic systems to show that automatic chemical-feed systems are maintaining water quality

within performance requirements specified in this Section. Submit written reports of water

analysis advising Owner of changes necessary to adhere to Part 1 "Performance Requirements"

Article.

F. Comply with ASTM D 3370 and with the following standards:

1. Silica: ASTM D 859.

2. Acidity and Alkalinity: ASTM D 1067.

3. Iron: ASTM D 1068.

4. Water Hardness: ASTM D 1126.

3.6 DEMONSTRATION


adjust, operate, and maintain HVAC water-treatment systems and equipment.




CENTRIFUGAL WATER CHILLERS 236416-1

SECTION 236416 –CENTRIFUGAL WATER CHILLERS

PART 1 - GENERAL

1.1 SUMMARY

1. Section Includes: Packaged, water-cooled, electric-motor-driven centrifugal chillers.

1.2 DEFINITIONS

A. EER: Energy-efficiency ratio.

B. IPLV: Integrated part-load value.

1.3 SUBMITTALS

A. Product Data: Include refrigerant, rated capacities, operating characteristics, furnished

specialties, and accessories.

B. Shop Drawings: Complete set of manufacturer's certified prints of water chiller assemblies,

control panels, sections and elevations, and unit isolation. Include the following:

1. Assembled unit dimensions.

2. Operating weight and load distribution.

3. Required clearances for maintenance and operation.

4. Size and location of piping and wiring connections.

5. Wiring Diagrams: Power, signal, and control wiring.

C. Certificates: For certification required in "Quality Assurance" Article.

D. Source quality-control test reports.

E. Startup service reports.

F. Operation and Maintenance Data: For each water chiller to include in emergency, operation,

and maintenance manuals.

G. Warranties: Special warranties specified in this Section.


A. ARI Certification: Signed by manufacturer certifying compliance with requirements in

ARI 550/590, "Water Chilling Packages Using the Vapor Compression Cycle."




B. ASHRAE Certification: Signed by manufacturer certifying compliance with ASHRAE 15 for

safety code for mechanical refrigeration. Comply with ASHRAE Guideline 3 for refrigerant

leaks, recovery, and handling and storage requirements.

C. ASME Compliance: Fabricate and label water chiller heat exchangers to comply with ASME

Boiler and Pressure Vessel Code: Section VIII, Division 1.

D. Comply with NFPA 70.

E. Comply with UL 1995.


A. Ship water chillers from the factory fully charged with refrigerant or nitrogen.

1.6 COORDINATION



1.7 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or

replace components of water chillers that fail in materials or workmanship.

1. Entire unit parts and labor: 1 year from date of Substantial Completion.

2. Compressor and Motor, parts only: 5 years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


following:

1. Carrier; a United Technologies Company.

2. Trane Company (The).

3. YORK International Corporation.

2.2 PACKAGED WATER CHILLERS

A. Description: Factory-assembled and -tested water chiller complete with compressor,

evaporator, condenser, controls, interconnecting unit piping and wiring, indicated accessories,

and mounting frame.

B. Water Chiller Characteristics and Capacities:




1. As scheduled on drawings

2.3 COMPRESSORS

A. Description: Variable displacement with direct-drive, hermetically sealed motor.

1. Casing: Cast iron, precision ground.

2. Impeller: High strength, cast-aluminum alloy on carbon- or forged-steel shaft;

dynamically balanced.

B. Capacity Control: Variable-inlet guide-vane assembly for stable operation that is free of surge,

cavitation, or vibration throughout throttling range from 100 to 10 percent of full load.

C. Oil Lubrication System: Positive-displacement submersible pump with heater, oil filter, and

sight glass.

D. Refrigerant and Oil: HCFC-123 or HCFC-134A.

E. Refrigerant Compatibility: Seals, O-rings, motor windings, and internal water chiller parts

exposed to refrigerants shall be fully compatible with refrigerants, and pressure components

shall be rated for refrigerant pressures.

2.4 HEAT EXCHANGERS

A. Evaporator:

1. Description: Shell-and-tube design, ASME labeled.

2. Shell Material: Carbon steel.

3. Tube Construction: Individually replaceable, expanded into tube sheets.

a. Material: Copper.

b. Minimum Size: 3/4-inch OD; 0.028-inch wall thickness.

c. Internal Finish: Enhanced.

4. Water Box: Standard, with design working pressure of 150 psig, and having grooved

mechanical-joint coupling water-nozzle connections with a thermistor-type temperature

sensor factory installed in each nozzle.

B. Condenser:

1. Description: Shell-and-tube design.

2. Shell Material: Carbon steel.

3. Tube Construction: Externally finned and individually replaceable, expanded into tube

sheets.

a. Material: Copper.

b. Minimum Size: 3/4-inch OD; 0.028-inch wall thickness.

c. Internal Finish: Enhanced.




4. Water Box: Standard, with design working pressure of 150 psig, and having grooved

mechanical-joint coupling water-nozzle connections with a thermistor-type temperature

sensor factory installed in each nozzle.

2.5 INSULATION

A. Cold Surfaces: Closed-cell, flexible elastomeric, thermal insulation complying with

ASTM C 534, Type II, for sheet materials.

1. Thickness: 3/4 inch.

2. Adhesive: As recommended by insulation manufacturer.

3. Factory apply insulation over entire surfaces of water chiller components.

a. Apply adhesive to 100 percent of insulation contact surface.

b. Seal seams and joints.

c. After adhesive has fully cured, apply two coats of protective coating to insulation.

2.6 ACCESSORIES

A. Pressure Relief Rupture Disc: Frangible carbon disc.

B. Pressure Relief Valve: Single- or multiple-reseating-type, spring-loaded relief valve.

C. Purge System: Factory mounted, R404A refrigerant cooled; with operating controls, piping,

expansion valve, and refrigerant service valves to isolate the purge unit from the chilling unit.

2.7 CONTROLS

A. Control Panel: Stand-alone, microprocessor based.

B. Enclosure: Unit-mounted, NEMA 250, Type 1 enclosure, hinged or lockable; factory wired

with a single-point power connection and a separate control circuit.

C. Status Display: Multiple-character liquid-crystal display or light-emitting diodes and keypad.

Display the following conditions:

1. Date and time.

2. Operating or alarm status.

3. Operating hours.

4. Temperature and pressure operating set points.

5. Entering and leaving temperatures of chilled water and condenser water.

6. Refrigerant pressures in evaporator and condenser.

7. Saturation temperature in evaporator and condenser.

8. Oil temperature and pressure.

9. Percent of maximum motor amperage.

10. Current-limit set point.

11. Number of compressor starts.

12. Purge suction temperature if purge system is provided.

13. Purge elapsed time if purge system is provided.




D. Control Functions:

1. Manual or automatic startup and shutdown time schedule.

2. Entering and leaving chilled-water temperatures, control set points, and motor load limit.

Chilled-water temperature shall be reset based on return-water temperature.

3. Current limit and demand limit.

4. Condenser-water temperature.

5. External water chiller emergency stop.

E. Manually Reset Safety Controls: The following conditions shall shut down water chiller and

require manual reset:

1. Low evaporator pressure; high condenser pressure.

2. Low chilled-water temperature.

3. Low oil differential pressure.

4. High or low oil pressure.

5. High oil temperature.

6. High compressor-discharge temperature.

7. Loss of chilled- or condenser-water flow.

8. Electrical overload.

9. Sensor- or detection-circuit fault.

10. Processor communication loss.

11. Starter fault.

12. Extended compressor surge.

13. Excessive air-leakage detection.

F. Building Management System Interface: Factory-installed hardware and software to enable

building management system to monitor and control chilled-water set point and chiller-control

displays and alarms.

2.8 MOTORS

A. Hermetically sealed, low-slip squirrel cage induction-type.

B. Liquid refrigerant motor cooling.

2.9 MAGNETIC ENCLOSED CONTROLLERS

A. Enclosure: Unit mounted, NEMA 250, NEMA ICS 6, Type 1, with hinged access door with

lock and key or padlock and key.

B. Control Circuit: 120 V; obtained from integral control power transformer with a control power

transformer of enough capacity to operate connected pilot and indicating and control devices.

C. Overload Relay: Shall be sized according to UL 1995 or shall be an integral component of

water chiller control microprocessor.

D. Star-Delta Controller: NEMA ICS 2, closed transition.




E. Accessories: Devices shall be factory installed in controller enclosure, unless otherwise

indicated.

1. Push-Button Stations, Pilot Lights, and Selector Switches: NEMA ICS 2, heavy-duty

type.

2. Stop and Lockout Push-Button Station: Momentary-break, push-button station with a

factory-applied hasp arranged so padlock can be used to lock push button in depressed

position with control circuit open.

3. Control Relays: Time-delay relays.

4. Elapsed-Time Meters: Heavy duty with digital readout in hours.

5. Meters: Panel type, 2-1/2-inch minimum diameter with 90- or 120-degree scale and plus

or minus 2 percent accuracy. Where indicated, provide transfer device with an off

position. Meters shall indicate the following:

a. Ammeter: Output current, with current sensors rated to suit application.

b. Voltmeter: Output voltage.

c. Frequency Meter: Output frequency.

d. Real-time clock with current time and date.

e. Total run time.

6. Multifunction Digital-Metering Monitor: Microprocessor-based unit suitable for three-

or four-wire systems and with the following features:

a. Selectable, digital display of the following:

1) Phase Currents, Each Phase: Plus or minus 1 percent.

2) Phase-to-Phase Voltages, Three Phase: Plus or minus 1 percent.

3) Phase-to-Neutral Voltages, Three Phase: Plus or minus 1 percent.

4) Three-Phase Real Power: Plus or minus 2 percent.

5) Three-Phase Reactive Power: Plus or minus 2 percent.

6) Power Factor: Plus or minus 2 percent.

7) Frequency: Plus or minus 0.5 percent.

8) Integrated Demand with Demand Interval Selectable from 5 to 60 Minutes:

Plus or minus 2 percent.

9) Accumulated energy, in megawatt hours (joules), plus or minus 2 percent;

stored values unaffected by power outages for up to 72 hours.

b. Mounting: Display and control unit flush or semirecessed in instrument

compartment door.

7. Phase-Failure and Undervoltage Relays: Solid-state sensing circuit with adjustable

undervoltage setting and isolated output contacts for hard-wired connection.

2.10 SOURCE QUALITY CONTROL

A. Factory test and rate water chillers, before shipping, according to ARI 550/590, "Water Chilling

Packages Using the Vapor Compression Cycle." Stamp with ARI label.

B. Factory test heat exchangers hydrostatically at 1.50 times the design pressure.




C. Factory test and inspect evaporator and water cooled-condenser according to ASME Boiler and

Pressure Vessel Code: Section VIII, Division 1. Stamp with ASME label.

D. Factory test and inspect water boxes at 150 percent of working pressure.

E. Rate sound power level according to ARI 575 procedure.

F. Allow Owner access to places where water chillers are being source quality-control tested.

Notify Architect 14 days in advance of testing.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Before water chiller installation, examine roughing-in for concrete equipment bases, anchor-bolt

sizes and locations, piping, and electrical to verify actual locations, sizes, and other conditions

affecting water chiller performance, maintenance, and operations.

1. Final water chiller locations indicated on Drawings are approximate. Determine exact

locations before roughing-in for piping and electrical connections.


3.2 WATER CHILLER INSTALLATION

A. Install water chillers on concrete base. Concrete base is specified in Division 15 Section "Basic

Mechanical Materials and Methods," and concrete materials and installation requirements are

specified in Division 3.

B. Concrete Bases: Anchor chiller mounting frame to concrete base.


install dowel rods on 18-inch centers around the full perimeter of concrete base.






5. Cast-in-place concrete materials and placement requirements are specified in Division 3.

C. Vibration Isolation: Rubber pads with a minimum deflection of 0.25 inch.

D. Maintain manufacturer's recommended clearances for service and maintenance.

E. Charge water chiller with refrigerant if not factory charged.

F. Install separate devices furnished by manufacturer.




3.3 CONNECTIONS

A. Chilled- and condenser-water piping installation requirements are specified in Division 15

Section "Hydronic Piping." Drawings indicate general arrangement of piping, fittings, and

specialties.

B. Install piping adjacent to water chillers to allow service and maintenance.

C. Evaporator Connections: Connect inlet to evaporator with controller-bulb well, shutoff valve,

thermometer, strainer, pressure gage, and union or flange. Connect outlet to evaporator with

shutoff valve, flow switch, balancing valve, thermometer, pressure gage, and union or flange.

D. Condenser Connections: Connect inlet to condenser with shutoff valve, thermometer, plugged

tee, and pressure gage. Connect outlet to condenser with shutoff valve, thermometer, drain line

and shutoff valve, strainer, and plugged tee.

E. Install shutoff valves at chilled-water and condenser-water inlet and outlet connections.

F. Refrigerant Pressure Relief Valve Connections: Extend vent piping to the outside without

valves or restrictions.

G. Ground water chillers according to Division 16 Section "Grounding and Bonding."

H. Connect wiring according to Division 16 Section "Conductors and Cables."

I. Tighten electrical connectors and terminals according to manufacturer's published torque-

tightening values. If manufacturer's torque values are not indicated, use those specified in

UL 486A and UL 486B.

3.4 STARTUP SERVICE

A. Engage a factory-authorized service representative to perform startup service.

B. Inspect field-assembled components, equipment installation, and piping and electrical

connections for proper assemblies, installations, and connections.

C. Complete installation and startup checks according to manufacturer's written instructions and

perform the following:

1. Verify that refrigerant charge is sufficient and water chiller has been leak tested.

2. Verify that pumps are installed and functional.

3. Verify that thermometers and gages are installed.

4. Operate water chiller for run-in period according to manufacturer's written instructions.

5. Check bearing lubrication and oil levels.

6. Verify that refrigerant pressure relief is vented outside.

7. Verify proper motor rotation.

8. Verify static deflection of vibration isolators, including deflection during water chiller

startup and shutdown.

9. Verify and record performance of chilled- and condenser-water flow and low-temperature

interlocks.




10. Verify and record performance of water chiller protection devices.

11. Test and adjust controls and safeties. Replace damaged or malfunctioning controls and

equipment.

D. Prepare a written startup report that records results of tests and inspections.

E. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion,

provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to

two visits to site outside normal occupancy hours for this purpose.

3.5 DEMONSTRATION


adjust, operate, and maintain water chillers.




COOLING TOWERS 236500-1

SECTION 236500 – COOLING TOWERS

PART 1 - GENERAL

1.1 SUMMARY


1. Open-circuit, induced-draft, crossflow cooling towers.

1.2 DEFINITIONS

A. BMS: Building management system.

B. FRP: Fiber-reinforced polyester.


A. Delegated Design: Design cooling tower support structure and wind restraints, including

comprehensive engineering analysis by a qualified professional engineer, using performance

requirements and design criteria indicated.

B. Structural Performance: Cooling tower support structure shall withstand the effects of gravity

loads and to resist wind loads of up to 30 psf.

1.4 SUBMITTALS

A. Product Data: For each type of product indicated. Include rated capacities, pressure drop, fan

performance data, rating curves with selected points indicated, furnished specialties, and

accessories.

1. Maximum flow rate.

2. Minimum flow rate.

3. Drift loss as percent of design flow rate.

4. Volume of water in suspension for purposes of sizing a remote storage tank.

5. Sound power levels in eight octave bands for operation with fans off, fans at minimum,

and design speed.

6. Performance curves for the following:

a. Varying entering-water temperatures from design to minimum.

b. Varying ambient wet-bulb temperatures from design to minimum.

c. Varying water flow rates from design to minimum.

d. Varying fan operation (off, minimum, and design speed).

7. Fan airflow, brake horsepower, and drive losses.

8. Pump flow rate, head, brake horsepower, and efficiency.




9. Motor amperage, efficiency, and power factor at 100, 75, 50, and 25 percent of nameplate

horsepower.

10. Electrical power requirements for each cooling tower component requiring power.

B. Shop Drawings: Complete set of manufacturer's prints of cooling tower assemblies, control

panels, sections and elevations, and unit isolation. Include the following:

1. Assembled unit dimensions.

2. Weight and load distribution.

3. Required clearances for maintenance and operation.

4. Sizes and locations of piping and wiring connections.

5. Wiring Diagrams: For power, signal, and control wiring.

C. Delegated-Design Submittal: For cooling tower support structure indicated to comply with

performance requirements and design criteria, including analysis data signed and sealed by the

qualified professional engineer responsible for their preparation.

1. Detail fabrication and assembly of support structure.

2. Vibration Isolation Base Details: Detail fabrication including anchorages and

attachments to structure and to supported equipment. Include adjustable motor bases,

rails, and frames for equipment mounting.

3. Design Calculations: Calculate requirements for selecting vibration isolators and wind

restraints and for designing vibration isolation bases.

D. Source quality-control reports.

E. Field quality-control reports.

F. Startup service reports.

G. Operation and Maintenance Data: For each cooling tower to include in emergency, operation,

and maintenance manuals.

H. Warranty: Sample of special warranty.


A. Testing Agency Qualifications: Certified by CTI.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,

by a qualified testing agency, and marked for intended location and application.

C. ASHRAE/IESNA 90.1 for energy efficiency.

D. ASME Compliance: Fabricate and label heat-exchanger coils to comply with ASME Boiler and

Pressure Vessel Code: Section VIII, Division 1.

E. CTI Certification: Cooling tower thermal performance according to CTI STD 201,

"Certification Standard for Commercial Water-Cooling Towers Thermal Performance."




1.6 COORDINATION

A. Coordinate sizes, locations, and anchoring attachments of structural-steel support structures.

B. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with

actual equipment provided.

1.7 WARRANTY


replace the following components of cooling towers that fail in materials or workmanship

within specified warranty period:

1. All components of cooling tower.

2. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 OPEN-CIRCUIT, INDUCED-DRAFT, CROSSFLOW COOLING TOWERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide product indicated

on Drawings or comparable product by one of the following:

1. Baltimore Aircoil Company.

2. Marley Cooling Technologies; an SPX Corporation.

3. Trane Co.

4. Evapco Inc.

B. Cooling tower designed to resist wind load of 30 lbf/sq. ft.

C. Casing and Frame:

1. Casing and Frame Material:

a. Type 304 Stainless steel.

2. Fasteners: Stainless steel.

3. Joints and Seams: Sealed watertight.

4. Welded Connections: Continuous and watertight.

D. Collection Basin:

1. Material:


2. Outlet Connection: Flanged pipe connection.




E. Gravity Water Distribution Basin: Nonpressurized design with head of water level in basin

adequate to overcome spray nozzle losses and designed to evenly distribute water over fill

throughout the flow range indicated.

1. Material:


2. Location: Over each bank of fill with easily replaceable plastic spray nozzles mounted in

bottom of basin.

3. Inlet Connection: Flanged pipe connection.

4. Joints and Seams: Sealed watertight.

5. Partitioning Dams: Same material as basin to distribute water over the fill to minimize

icing while operating throughout the flow range indicated.

6. Removable Panels: Same material as basin to completely cover top of basin. Secure

panels to basin with removable stainless-steel hardware.

7. Single-Inlet Connection: Provide weirs and metering orifices to assure even distribution

of water over the wet deck surface.

F. Fill:

1. Materials: PVC, with maximum flame-spread index of 5 according to ASTM E 84.

2. Minimum Thickness: 15 mils before forming.

3. Fabrication: Fill-type sheets, fabricated, formed, and bonded together after forming into

removable assemblies that are factory installed by manufacturer.

4. Fill Material Operating Temperature: Suitable for entering-water temperatures up

through 120 deg F.

G. Drift Eliminator:

1. Material: PVC; with maximum flame-spread index of 5 according to ASTM E 84.

2. UV Treatment: Inhibitors to protect against damage caused by UV radiation.

3. Configuration: Multipass, designed and tested to reduce water carryover to achieve

performance indicated.

4. Location: Integral to fill.

H. Air-Intake Louvers:

1. Material: FRP.

2. UV Treatment: Inhibitors to protect against damage caused by UV radiation.

3. Louver Blades: Arranged to uniformly direct air into cooling tower, to minimize air

resistance, and to prevent water from splashing out of tower during all modes of

operation including operation with fans off.

4. Location: Separate from fill.

I. Removable Air-Intake Screens: Stainless-steel wire mesh.

J. Axial Fan: Balanced at the factory after assembly.

1. Blade Material: Aluminum.

2. Hub Material: Aluminum.




3. Blade Pitch: Field adjustable.

4. Protective Enclosure: Removable, galvanized-steel, wire-mesh screens complying with

OSHA regulations.

5. Fan Shaft Bearings: Self-aligning ball or roller bearings with moisture-proof seals and

premium, moisture-resistant grease suitable for temperatures between minus 20 and plus

300 deg F. Bearings designed for an L-10 life of 40,000 hours.

6. Bearings Grease Fittings: Extended lubrication lines to an easily accessible location.

K. Belt Drive:

1. Service Factor: 1.5 based on motor nameplate horsepower.

2. Sheaves: Fan and motor shafts shall have taper-lock sheaves fabricated from corrosion-

resistant materials.

3. Belt: One-piece, multigrooved, solid-back belt.

4. Belt Material: Oil resistant, nonstatic conducting, and constructed of neoprene polyester

cord.

5. Belt-Drive Guard: Comply with OSHA regulations.

L. Fan Motor:

1. General Requirements for Fan Motors: Comply with NEMA designation and

temperature-rating requirements.

2. Motor Enclosure: Totally enclosed air over (TEAO).

3. Energy Efficiency: NEMA Premium Efficient.

4. Service Factor: 1.15.

5. Insulation: Suitable for cooling tower applications.

6. Variable-Speed Motors: Inverter-duty rated per NEMA MG-1, Section IV, "Performance

Standard Applying to All Machines," Part 31, "Definite-Purpose, Inverter-Fed, Polyphase

Motors."

7. Motor Location: Mounted outside of cooling tower casing and cooling tower discharge

airstream.

8. Severe-duty rating with the following features:

a. Rotor and stator protected with corrosion-inhibiting epoxy resin.

b. Double-shielded, vacuum-degassed bearings lubricated with premium, moisture-

resistant grease suitable for temperatures between minus 20 and plus 300 deg F.

c. Internal heater automatically energized when motor is de-energized.

9. Motor Base: Adjustable, or other suitable provision for adjusting belt tension.

M. Fan Discharge Stack: Material shall match casing, manufacturer's standard design.

1. Stack Termination: Wire-mesh, galvanized-steel screens; complying with OSHA

regulations.

N. Vibration Switch: For each fan drive.

1. Enclosure: NEMA 250, Type 4.

2. Vibration Detection: Sensor with a field-adjustable, acceleration-sensitivity set point in a

range of 0 to 1 g and frequency range of 0 to 3000 cycles per minute. Cooling tower

manufacturer shall recommend switch set point for proper operation and protection.




3. Provide switch with manual-reset button for field connection to a BMS and hardwired

connection to fan motor electrical circuit.

4. Switch shall, on sensing excessive vibration, signal an alarm through the BMS and shut

down the fan.

O. Controls: Comply with requirements in Division 23 Section "HVAC Instrumentation and

Controls."

P. Personnel Access Components:

1. Doors: Large enough for personnel to access cooling tower internal components from

both cooling tower end walls. Doors shall be operable from both sides of the door.

2. External Ladders with Safety Cages: Aluminum, galvanized- or stainless-steel, fixed

ladders with ladder extensions to access external platforms and top of cooling tower from

adjacent grade without the need for portable ladders. Comply with 29 CFR 1910.27.

(OSHA requiremetns).

3. Handrail: Aluminum, galvanized steel, or stainless steel complete with kneerail and

toeboard, around top of cooling tower. Comply with 29 CFR 1910.23.

4. Internal Platforms: Aluminum, FRP, or galvanized-steel bar grating.

a. Spanning the collection basin from one end of cooling tower to the other and

positioned to form a path between the access doors. Platform shall be elevated so

that all parts are above the high water level of the collection basin.

b. Elevated internal platforms with handrails accessible from fixed vertical ladders to

access the fan drive assembly when out of reach from collection basin platform.

Q. Capacities and Characteristics: Scheduled on the drawings.

Alternate Bid M-1 (deductive):

Provide cooling tower of galvanized steel construction incorporating a polymer-coated collection

basin in lieu of stainless steel tower specified. Acceptable manufacturers remain as specified

under base bid. Basin corrosion protection shall carry a minimum 5-year warranty.


A. Verification of Performance: Test and certify cooling tower performance according to

CTI STD 201, "Certification Standard for Commercial Water-Cooling Towers Thermal

Performance."

PART 3 - EXECUTION

3.1 EXAMINATION

A. Before cooling tower installation, examine roughing-in for tower support, anchor-bolt sizes and

locations, piping, and electrical connections to verify actual locations, sizes, and other

conditions affecting tower performance, maintenance, and operation.




1. Cooling tower locations indicated on Drawings are approximate. Determine exact

locations before roughing-in for piping and electrical connections.


3.2 INSTALLATION

A. Install cooling towers on support structure indicated.

B. Equipment Mounting: Install cooling tower using restrained spring isolators.

1. Minimum Deflection: 1 inch.

C. Install anchor bolts to elevations required for proper attachment to supported equipment.

D. Maintain manufacturer's recommended clearances for service and maintenance.

E. Loose Components: Install electrical components, devices, and accessories that are not factory

mounted.

3.3 CONNECTIONS



B. Install piping adjacent to cooling towers to allow service and maintenance.

C. Install flexible pipe connectors at pipe connections of cooling towers mounted on vibration

isolators.

D. Provide drain piping with valve at cooling tower drain connections and at low points in piping.

E. Connect cooling tower overflows and drains, and piping drains to sanitary sewage system.

F. Supply and Return Piping: Comply with applicable requirements in Division 23 Section

"Hydronic Piping." Connect to entering cooling tower connections with shutoff valve,

balancing valve, thermometer, plugged tee with pressure gage, flow meter, and drain connection

with valve. Connect to leaving cooling tower connection with shutoff valve. Make connections

to cooling tower with a flange.


A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

B. Manufacturer's Field Service: Engage a factory-authorized service representative to perform

field tests and inspections.

C. Perform tests and inspections.







D. Tests and Inspections: Comply with CTI ATC 105, "Acceptance Test Code for Water Cooling

Towers."

E. Cooling towers will be considered defective if they do not pass tests and inspections.

F. Prepare test and inspection reports.

3.5 STARTUP SERVICE

A. Engage a factory-authorized service representative to perform startup service.

B. Inspect field-assembled components, equipment installation, and piping and electrical

connections for proper assemblies, installations, and connections.

C. Obtain performance data from manufacturer.

1. Complete installation and startup checks according to manufacturer's written instructions

and perform the following:

a. Clean entire unit including basins.

b. Verify that accessories are properly installed.

c. Verify clearances for airflow and for cooling tower servicing.

d. Check for vibration isolation and structural support.

e. Lubricate bearings.

f. Verify fan rotation for correct direction and for vibration or binding and correct

problems.

g. Adjust belts to proper alignment and tension.

h. Operate variable-speed fans through entire operating range and check for harmonic

vibration imbalance. Set motor controller to skip speeds resulting in abnormal

vibration.

i. Check vibration switch setting. Verify operation.

j. Verify that cooling tower air discharge is not recirculating air into tower or HVAC

air intakes. Recommend corrective action.

k. Replace defective and malfunctioning units.

D. Start cooling tower and associated water pumps. Follow manufacturer's written starting

procedures.

E. Prepare a written startup report that records the results of tests and inspections.

3.6 ADJUSTING

A. Set and balance water flow to each tower inlet.




3.7 DEMONSTRATION


adjust, operate, and maintain cooling towers.




WATER STORAGE TANKS 236500.1-1

SECTION 236500.1 – WATER STORAGE TANKS

PART 1 - GENERAL

1.1 SUMMARY


1. Cooling tower sump water storage tanks and related accessories for indoor installation.

1.2 DEFINITIONS

A. FRP: Fiberglass-reinforced plastic.

1.3 SUBMITTALS

A. Product Data: Include rated capacities, operating characteristics, furnished specialties, and

accessories. Indicate dimensions, wall thickness, insulation, finishes and coatings, required

clearances, methods of assembly of components, and piping connections.

1. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate

and describe mounting and anchorage provisions.

2. Detailed description of equipment anchorage devices on which the certification is based

and their installation requirements.

1.4 COORDINATION



PART 2 - PRODUCTS

2.1 MANUFACTURERS


product selection:







2.2 PLASTIC, NONPRESSURE, POTABLE-WATER STORAGE TANKS

A. FRP, Potable-Water Storage Tanks:

1. Manufacturers:

a. Associated Fiberglass Enterprises.

b. Belding Tank Technologies, Inc.

c. L. F. Manufacturing, Inc.

d. Palmer Manufacturing & Tank, Inc.

e. Raven Industries Inc.; Plastics Div.

f. Viatec Inc.

2. Description: FRP, vertical, nonpressure-rated water tank.

3. Construction: ASTM D 3299, filament-wound or ASTM D 4097, contact-molded FRP.

4. Tappings: Factory-fabricated, FRP flanged-end nozzle.

a. NPS 2 and Smaller: Include plastic-to-steel transition fitting from tank nozzle

flange to ASME B1.20.1, female thread.

b. NPS 2-1/2 and Larger: Flanged.

5. Flat bottom supported by concrete pad. Secure to pad with anchor clips and anchor bolts.

6. Provide minimum 2” diameter side outlet at bottom, to completely drain tank.


A. Test and inspect potable-water storage tanks according to the following tests and inspections

and prepare test reports:

1. Nonpressure Testing for Potable-Water Storage Tanks: Fill tanks to water operating level

to ensure structural integrity and freedom from leaks. Hold water level for two hours

with no drop in water level. Repair or replace tanks that fail test with new tanks, and

repeat until test is satisfactory.

PART 3 - EXECUTION

3.1 CONCRETE BASES

A. Install concrete bases of dimensions indicated for tanks. Refer to Division 15 Section "Basic

Mechanical Materials and Methods."


install dowel rods on 18-inch centers around full perimeter of base.



B. Cast-in-place concrete materials and placement requirements are specified in Division 3.




3.2 INSTALLATION

A. Install water storage tanks on concrete bases, level and plumb, firmly anchored. Arrange so

devices needing servicing are accessible.

B. Install the following devices on tanks where indicated:

1. Tank vents on nonpressure tanks.

2. Connections to accessories.

3.3 CONNECTIONS



B. Install piping adjacent to water storage tanks to allow service and maintenance.

C. Connect water piping to water storage tanks with unions or flanges and with shutoff valves.

Connect tank drains with shutoff valves and discharge over closest floor drains.

1. General-duty valves are specified in Division 15 Section "Valves."

a. Valves NPS 2 and Smaller: Ball.

b. Valves NPS 2-1/2 and Larger: Butterfly.


A. Filling Procedures: Follow manufacturer's written procedures. Fill tanks with water to

operating level.

3.5 CLEANING

A. Clean water storage tanks.

END OF SECTION 236500.1



LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 1

SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY


1. Building wires and cables rated 600 V and less.

2. Connectors, splices, and terminations rated 600 V and less.

1.3 DEFINITIONS

A. VFC: Variable frequency controller.




A. Qualification Data: For testing agency.



A. Testing Agency Qualifications: Member company of NETA or an NRTL.

1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing.

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES

A. Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658.

B. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 for Type THW-2,

Type THHN/THWN-2, and Type XHHW-2.




2.2 CONNECTORS AND SPLICES

A. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type,

and class for application and service indicated.

2.3 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by

a qualified testing agency, and marked for intended location and application.

B. Comply with NFPA 70.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.

B. Branch Circuits: Copper. Solid for No. 12 AWG and smaller; stranded for No. 10 AWG and

larger, except VFC cable, which shall be extra flexible stranded.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND

WIRING METHODS

A. Exposed Feeders: Type THHN/THWN-2, single conductors in raceway; or Type XHHW-2,

single conductors in raceway.

B. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN/THWN-2,

single conductors in raceway.

C. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground:

Type THHN/THWN-2, single conductors in raceway; or Type XHHW-2, single conductors in

raceway.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.

B. Complete raceway installation between conductor and cable termination points according to

Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and

cables.

C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used

must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended

maximum pulling tensions and sidewall pressure values.




D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will

not damage cables or raceway.

E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and

follow surface contours where possible.

F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."

G. Complete cable tray systems installation according to Section 260536 "Cable Trays for

Electrical Systems" prior to installing conductors and cables.

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque-

tightening values. If manufacturer's torque values are not indicated, use those specified in

UL 486A-486B.

B. Make splices, terminations, and taps that are compatible with conductor material[ and that

possess equivalent or better mechanical strength and insulation ratings than unspliced

conductors].

1. Use oxide inhibitor in each splice, termination, and tap for aluminum conductors.

3.5 IDENTIFICATION

A. Identify and color-code conductors and cables according to Section 260553 "Identification for

Electrical Systems."

B. Identify each spare conductor at each end with identity number and location of other end of

conductor, and identify as spare conductor.

3.6 FIRESTOPPING

A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore

original fire-resistance rating of assembly according to Section 078413 "Penetration

Firestopping."



B. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

C. Perform the following tests and inspections with the assistance of a factory-authorized service

representative:




1. After installing conductors and cables and before electrical circuitry has been energized,

test conductors feeding the following critical equipment and services for compliance with

requirements.

a. Feeder from Main Switchboard to new Chiller

b. Feeder from Main Switchboard to new M.C.C.

c. Feeder from new M.C.C. to new Cooling Tower

2. Perform each visual and mechanical inspection and electrical test stated in NETA

Acceptance Testing Specification. Certify compliance with test parameters.

3. Infrared Scanning: After Substantial Completion, but not more than 60 days after Final

Acceptance, perform an infrared scan of each splice in conductors No. 3 AWG and

larger. Remove box and equipment covers so splices are accessible to portable scanner.

Correct deficiencies determined during the scan.

a. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of

each splice 11 months after date of Substantial Completion.

b. Instrument: Use an infrared scanning device designed to measure temperature or to

detect significant deviations from normal values. Provide calibration record for

device.

c. Record of Infrared Scanning: Prepare a certified report that identifies splices

checked and that describes scanning results. Include notation of deficiencies

detected, remedial action taken, and observations after remedial action.

D. Test and Inspection Reports: Prepare a written report to record the following:

1. Procedures used.

2. Results that comply with requirements.

3. Results that do not comply with requirements and corrective action taken to achieve

compliance with requirements.

E. Cables will be considered defective if they do not pass tests and inspections.




GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526 - 1

SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes grounding and bonding systems and equipment.

B. Section includes grounding and bonding systems and equipment, plus the following special

applications:

1. Underground distribution grounding.




A. Qualification Data: For testing agency and testing agency's field supervisor.



A. Operation and Maintenance Data: For grounding to include in emergency, operation, and

maintenance manuals.


A. Testing Agency Qualifications: Member company of NETA or an NRTL.


B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by


C. Comply with UL 467 for grounding and bonding materials and equipment.




PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. None


A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by


B. Comply with UL 467 for grounding and bonding materials and equipment.

2.3 CONDUCTORS

A. Insulated Conductors: Copper or tinned-copper wire or cable insulated for 600 V unless

otherwise required by applicable Code or authorities having jurisdiction.

2.4 CONNECTORS

A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications in

which used and for specific types, sizes, and combinations of conductors and other items

connected.

B. Bus-Bar Connectors: Mechanical type, cast silicon bronze, solderless compression-type wire

terminals, and long-barrel, two-bolt connection to ground bus bar.

PART 3 - EXECUTION

3.1 APPLICATIONS

A. Conductors: Install solid conductor for No. 8 AWG and smaller, and stranded conductors for

No. 6 AWG and larger unless otherwise indicated.

B. Grounding Bus: Install in electrical equipment rooms, in rooms housing service equipment, and

elsewhere as indicated.

1. Install bus horizontally, on insulated spacers 2 inches (50 mm) minimum from wall, 6

inches (150 mm) above finished floor unless otherwise indicated.

2. Where indicated on both sides of doorways, route bus up to top of door frame, across top

of doorway, and down; connect to horizontal bus.

C. Conductor Terminations and Connections:

1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors.

http://www.specagent.com/LookUp/?ulid=7341&mf=04&src=wd




2. Underground Connections: Welded connectors except at test wells and as otherwise

indicated.

3. Connections to Ground Rods at Test Wells: Bolted connectors.

4. Connections to Structural Steel: Welded connectors.

3.2 EQUIPMENT GROUNDING

A. Install insulated equipment grounding conductors with all feeders and branch circuits.

B. Install insulated equipment grounding conductors with the following items, in addition to those

required by NFPA 70:

1. Feeders and branch circuits.

2. Lighting circuits.

3. Receptacle circuits.

4. Single-phase motor and appliance branch circuits.

5. Three-phase motor and appliance branch circuits.

6. Flexible raceway runs.

7. Armored and metal-clad cable runs.

8. Busway Supply Circuits: Install insulated equipment grounding conductor from

grounding bus in the switchgear, switchboard, or distribution panel to equipment

grounding bar terminal on busway.

9. X-Ray Equipment Circuits: Install insulated equipment grounding conductor in circuits

supplying x-ray equipment.

C. Poles Supporting Outdoor Lighting Fixtures: Install grounding electrode and a separate

insulated equipment grounding conductor in addition to grounding conductor installed with

branch-circuit conductors.

3.3 INSTALLATION

A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwise

indicated or required by Code. Avoid obstructing access or placing conductors where they may

be subjected to strain, impact, or damage.



B. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test,

and adjust components, assemblies, and equipment installations, including connections.

C. Perform tests and inspections.




D. Tests and Inspections:




1. After installing grounding system but before permanent electrical circuits have been

energized, test for compliance with requirements.

2. Inspect physical and mechanical condition. Verify tightness of accessible, bolted,

electrical connections with a calibrated torque wrench according to manufacturer's

written instructions.

3. Test completed grounding system at each location where a maximum ground-resistance

level is specified, at service disconnect enclosure grounding terminal, and at individual

ground rods. Make tests at ground rods before any conductors are connected.

a. Measure ground resistance no fewer than two full days after last trace of

precipitation and without soil being moistened by any means other than natural

drainage or seepage and without chemical treatment or other artificial means of

reducing natural ground resistance.

b. Perform tests by fall-of-potential method according to IEEE 81.

4. Prepare dimensioned Drawings locating each test well, ground rod and ground-rod

assembly, and other grounding electrodes. Identify each by letter in alphabetical order,

and key to the record of tests and observations. Include the number of rods driven and

their depth at each location, and include observations of weather and other phenomena

that may affect test results. Describe measures taken to improve test results.

E. Grounding system will be considered defective if it does not pass tests and inspections.

F. Prepare test and inspection reports.

G. Report measured ground resistances that exceed the following values:

1. Power and Lighting Equipment or System with Capacity of 500 to 1000 kVA: 5 ohms.

2. Substations and Pad-Mounted Equipment: 5 ohms.

H. Excessive Ground Resistance: If resistance to ground exceeds specified values, notify Architect

promptly and include recommendations to reduce ground resistance.




HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529 - 1

SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS




1.2 SUMMARY

A. This Section includes the following:

1. Hangers and supports for electrical equipment and systems.

2. Construction requirements for concrete bases.

1.3 DEFINITIONS

A. EMT: Electrical metallic tubing.

B. IMC: Intermediate metal conduit.

C. RMC: Rigid metal conduit.


A. Delegated Design: Design supports for multiple raceways, including comprehensive

engineering analysis by a qualified professional engineer, using performance requirements and

design criteria indicated.

B. Design supports for multiple raceways capable of supporting combined weight of supported

systems and its contents.

C. Design equipment supports capable of supporting combined operating weight of supported

equipment and connected systems and components.

D. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loads

calculated or imposed for this Project, with a minimum structural safety factor of five times the

applied force.


A. Product Data: For the following:

1. Steel slotted support systems.

2. Nonmetallic slotted support systems.





A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural

Welding Code - Steel."


1.7 COORDINATION


reinforcement, and formwork requirements are specified together with concrete Specifications.

B. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items

are specified in Section 077200 "Roof Accessories."

PART 2 - PRODUCTS

2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Steel Slotted Support Systems: Stainless-steel strut, by Unistrut, B-Line. Comply with MFMA-

4, factory-fabricated components for field assembly.

B. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

C. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed for

types and sizes of raceway or cable to be supported.

D. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded

body and insulating wedging plug or plugs for non-armored electrical conductors or cables in

riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as

required to suit individual conductors or cables supported. Body shall be malleable iron.

E. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates,

shapes, and bars; black and galvanized.

F. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their

supports to building surfaces include the following:

1. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement

concrete, steel, or wood, with tension, shear, and pullout capacities appropriate for

supported loads and building materials where used.

2. Mechanical-Expansion Anchors: Insert-wedge-type, [zinc-coated] [stainless] steel, for

use in hardened portland cement concrete with tension, shear, and pullout capacities

appropriate for supported loads and building materials in which used.




3. Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSS

Type 18; complying with MFMA-4 or MSS SP-58.

4. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable for

attached structural element.

5. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325.

6. Toggle Bolts: All-steel springhead type.

7. Hanger Rods: Threaded steel.

2.2 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description: Welded or bolted, structural-steel shapes, shop or field fabricated to fit dimensions

of supported equipment.

B. Materials: Comply with requirements in Section 055000 "Metal Fabrications" for steel shapes

and plates.

PART 3 - EXECUTION

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical

equipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for

EMT, IMC, and RMC as required by NFPA 70. Minimum rod size shall be 1/4 inch (6 mm) in

diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted support

system, sized so capacity can be increased by at least 25 percent in future without exceeding

specified design load limits.

1. Secure raceways and cables to these supports with single-bolt conduit clamps.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this

Article.

B. Strength of Support Assemblies: Where not indicated, select sizes of components so strength

will be adequate to carry present and future static loads within specified loading limits.

Minimum static design load used for strength determination shall be weight of supported

components plus 200 lb (90 kg).

C. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten

electrical items and their supports to building structural elements by the following methods

unless otherwise indicated by code:

1. To Wood: Fasten with lag screws or through bolts.




2. To New Concrete: Bolt to concrete inserts.

3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor

fasteners on solid masonry units.

4. To Existing Concrete: Expansion anchor fasteners.

5. Instead of expansion anchors, powder-actuated driven threaded studs provided with lock

washers and nuts may be used in existing standard-weight concrete 4 inches (100 mm)

thick or greater. Do not use for anchorage to lightweight-aggregate concrete or for slabs

less than 4 inches (100 mm) thick.

6. To Steel: Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69 .

7. To Light Steel: Sheet metal screws.

8. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets,

panelboards, disconnect switches, control enclosures, pull and junction boxes,

transformers, and other devices on slotted-channel racks attached to substrate.

D. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing

bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Section 055000 "Metal Fabrications" for site-

fabricated metal supports.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation

to support and anchor electrical materials and equipment.

C. Field Welding: Comply with AWS D1.1/D1.1M.

3.4 CONCRETE BASES

A. Construct concrete bases of dimensions indicated but not less than 4 inches (100 mm) larger in

both directions than supported unit, and so anchors will be a minimum of 10 bolt diameters

from edge of the base.

B. Use 3000-psi (20.7-MPa), 28-day compressive-strength concrete. Concrete materials,

reinforcement, and placement requirements are specified in Section 033000 "Cast-in-Place

Concrete."

C. Anchor equipment to concrete base.

1. Place and secure anchorage devices. Use supported equipment manufacturer's setting

drawings, templates, diagrams, instructions, and directions furnished with items to be

embedded.






3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately

after erecting hangers and supports. Use same materials as used for shop painting. Comply with

SSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils (0.05

mm).

B. Touchup: Comply with requirements in Section 099600 "High Performance Coatings" for

cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop

paint on miscellaneous metal.

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply

galvanizing-repair paint to comply with ASTM A 780.




RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533 - 1

SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS




1.2 SUMMARY


1. Metal conduits, tubing, and fittings.

2. Nonmetal conduits, tubing, and fittings.

3. Boxes, enclosures, and cabinets.

1.3 DEFINITIONS

A. GRC: Galvanized rigid steel conduit.

B. IMC: Intermediate metal conduit.


A. Product Data: For surface raceways, wireways and fittings, floor boxes, hinged-cover

enclosures, and cabinets.

B. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and

attachment details.


A. Coordination Drawings: Conduit routing plans, drawn to scale, on which the following items

are shown and coordinated with each other, using input from installers of items involved:

1. Structural members in paths of conduit groups with common supports.

2. HVAC and plumbing items and architectural features in paths of conduit groups with

common supports.

B. Qualification Data: For professional engineer.

C. Source quality-control reports.




PART 2 - PRODUCTS

2.1 METAL CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as defined

in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. GRC: Comply with ANSI C80.1 and UL 6.

C. IMC: Comply with ANSI C80.6 and UL 1242.

D. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360.

E. Fittings for Metal Conduit: Comply with NEMA FB 1 and UL 514B.

1. Expansion Fittings: PVC or steel to match conduit type, complying with UL 651, rated

for environmental conditions where installed, and including flexible external bonding

jumper.

2. Coating for Fittings for PVC-Coated Conduit: Minimum thickness of 0.040 inch (1 mm),

with overlapping sleeves protecting threaded joints.

F. Joint Compound for IMC, or GRC: Approved, as defined in NFPA 70, by authorities having

jurisdiction for use in conduit assemblies, and compounded for use to lubricate and protect

threaded conduit joints from corrosion and to enhance their conductivity.

2.2 NONMETALLIC CONDUITS, TUBING, AND FITTINGS

A. Listing and Labeling: Nonmetallic conduits, tubing, and fittings shall be listed and labeled as

defined in NFPA 70, by a qualified testing agency, and marked for intended location and

application.

B. RNC: Type EPC-80-PVC, complying with NEMA TC 2 and UL 651 unless otherwise

indicated.

C. LFNC: Comply with UL 1660.

D. Fittings for ENT and RNC: Comply with NEMA TC 3; match to conduit or tubing type and

material.

E. Fittings for LFNC: Comply with UL 514B.

F. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less,

respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2.3 BOXES, ENCLOSURES, AND CABINETS

A. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets

installed in wet locations shall be listed for use in wet locations.




B. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy, Type FD, with

gasketed cover.

C. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, cast

aluminum with gasketed cover.

D. Device Box Dimensions: [4 inches square by 2-1/8 inches deep (100 mm square by 60 mm

deep)] [4 inches by 2-1/8 inches by 2-1/8 inches deep (100 mm by 60 mm by 60 mm deep)].

E. Gangable boxes are prohibited.

F. Hinged-Cover Pullboxes: Comply with UL 50 and NEMA 250, Type 3R with continuous-hinge

cover with flush latch unless otherwise indicated.

1. Metal Enclosures: Steel, finished inside and out with manufacturer's standard enamel.

PART 3 - EXECUTION

3.1 RACEWAY APPLICATION

A. Outdoors: Apply raceway products as specified below unless otherwise indicated:

1. Exposed Conduit: GRC or IMC.

2. Underground Conduit: RNC, Type EPC-80-PVC, direct buried.

3. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic,

Electric Solenoid, or Motor-Driven Equipment): LFMC .

B. Minimum Raceway Size: 3/4-inch (21-mm) trade size.

C. Raceway Fittings: Compatible with raceways and suitable for use and location.

1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless

otherwise indicated. Comply with NEMA FB 2.10.

2. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with

NEMA FB 2.20.

D. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F (49 deg C) .

3.2 INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except where requirements

on Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits.

Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and

number of floors.

B. Keep raceways at least 6 inches (150 mm) away from parallel runs of flues and steam or hot-

water pipes. Install horizontal raceway runs above water and steam piping.

C. Complete raceway installation before starting conductor installation.




D. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems"

for hangers and supports.

E. Arrange stub-ups so curved portions of bends are not visible above finished slab.

F. Install no more than the equivalent of three 90-degree bends in any conduit run except for

control wiring conduits, for which fewer bends are allowed. Support within 12 inches (300 mm)

of changes in direction.

G. Conceal conduit and EMT within finished walls, ceilings, and floors unless otherwise indicated.

Install conduits parallel or perpendicular to building lines.

H. Support conduit within 12 inches (300 mm)of enclosures to which attached.

I. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply

listed compound to threads of raceway and fittings before making up joints. Follow compound

manufacturer's written instructions.

J. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings

to protect conductors including conductors smaller than No. 4 AWG.

K. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes

or cabinets. Install bushings on conduits up to 1-1/4-inch (35mm) trade size and insulated throat

metal bushings on 1-1/2-inch (41-mm) trade size and larger conduits terminated with locknuts.

Install insulated throat metal grounding bushings on service conduits.

L. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install

locknuts hand tight plus 1/4 turn more.

M. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in

the locknut area prior to assembling conduit to enclosure to assure a continuous ground path.

N. Cut conduit perpendicular to the length. For conduits 2-inch (53-mm) trade size and larger, use

roll cutter or a guide to make cut straight and perpendicular to the length.

O. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not

less than 200-lb (90-kg) tensile strength. Leave at least 12 inches (300 mm) of slack at each end

of pull wire. Cap underground raceways designated as spare above grade alongside raceways in

use.

P. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with

listed sealing compound. For concealed raceways, install each fitting in a flush steel box with a

blank cover plate having a finish similar to that of adjacent plates or surfaces. Install raceway

sealing fittings according to NFPA 70.

Q. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or

boxes are between the seal and the following changes of environments. Seal the interior of all

raceways at the following points:

1. Where conduits pass from warm to cold locations, such as boundaries of refrigerated

spaces.




2. Where an underground service raceway enters a building or structure.

3. Where otherwise required by NFPA 70.

R. Comply with manufacturer's written instructions for solvent welding RNC and fittings.

S. Expansion-Joint Fittings:

1. Install in each run of aboveground RNC that is located where environmental temperature

change may exceed 30 deg F (17 deg C) and that has straight-run length that exceeds 25

feet (7.6 m). Install in each run of aboveground RMC[ and EMT] conduit that is located

where environmental temperature change may exceed 100 deg F (55 deg C) and that has

straight-run length that exceeds 100 feet (30 m).

2. Install type and quantity of fittings that accommodate temperature change listed for each

of the following locations:

a. Outdoor Locations Not Exposed to Direct Sunlight: [125 deg F (70 deg C)] <Insert

temperature> temperature change.

b. Outdoor Locations Exposed to Direct Sunlight: [155 deg F (86 deg C)] <Insert

temperature> temperature change.

c. Indoor Spaces Connected with Outdoors without Physical Separation: [125 deg F

(70 deg C)] <Insert temperature> temperature change.

d. Attics: [135 deg F (75 deg C)] <Insert temperature> temperature change.

e. <Insert location and corresponding temperature change>.

3. Install fitting(s) that provide expansion and contraction for at least 0.00041 inch per foot

of length of straight run per deg F (0.06 mm per meter of length of straight run per deg C)

of temperature change for PVC conduits. Install fitting(s) that provide expansion and

contraction for at least 0.000078 inch per foot of length of straight run per deg F

(0.0115 mm per meter of length of straight run per deg C) of temperature change for

metal conduits.

4. Install expansion fittings at all locations where conduits cross building or structure

expansion joints.

5. Install each expansion-joint fitting with position, mounting, and piston setting selected

according to manufacturer's written instructions for conditions at specific location at time

of installation. Install conduit supports to allow for expansion movement.

T. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 24 inches of

flexible conduit for equipment subject to vibration, noise transmission, or movement; and for

transformers and motors.

1. Use LFMC in damp or wet locations subject to severe physical damage.

U. Locate boxes so that cover or plate will not span different building finishes.

V. Fasten junction and pull boxes to or support from building structure. Do not support boxes by

conduits.

3.3 INSTALLATION OF UNDERGROUND CONDUIT

A. Direct-Buried Conduit:




1. Excavate trench bottom to provide firm and uniform support for conduit. Prepare trench

bottom as specified in Section 312000 "Earth Moving" for pipe less than 6 inches (150

mm) in nominal diameter.

2. Install backfill as specified in Section 312000 "Earth Moving."

3. After installing conduit, backfill and compact. Start at tie-in point, and work toward end

of conduit run, leaving conduit at end of run free to move with expansion and contraction

as temperature changes during this process. Firmly hand tamp backfill around conduit to

provide maximum supporting strength. After placing controlled backfill to within 12

inches (300 mm) of finished grade, make final conduit connection at end of run and

complete backfilling with normal compaction as specified in Section 312000 "Earth

Moving."

4. Install manufactured duct elbows for stub-ups at poles and equipment and at building

entrances through floor unless otherwise indicated. Encase elbows for stub-up ducts

throughout length of elbow.

5. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment and

at building entrances through floor.

a. Couple steel conduits to ducts with adapters designed for this purpose, and encase

coupling with 3 inches (75 mm) of concrete for a minimum of 12 inches (300 mm)

on each side of the coupling.

b. For stub-ups at equipment mounted on outdoor concrete bases and where conduits

penetrate building foundations, extend steel conduit horizontally a minimum of

60 inches (1500 mm) from edge of foundation or equipment base. Install insulated

grounding bushings on terminations at equipment.

6. Warning Planks: Bury warning planks approximately 12 inches (300 mm) above direct-

buried conduits but a minimum of 6 inches (150 mm) below grade. Align planks along

centerline of conduit.

7. Underground Warning Tape: Comply with requirements in Section 260553

"Identification for Electrical Systems."

3.4 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply

with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and

Cabling."

3.5 PROTECTION

A. Protect coatings, finishes, and cabinets from damage and deterioration.

1. Repair damage to galvanized finishes with zinc-rich paint recommended by

manufacturer.

2. Repair damage to PVC coatings or paint finishes with matching touchup coating

recommended by manufacturer.




IDENTIFICATION FOR ELECTRICAL SYSTEMS 260553 - 1

SECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMS




1.2 SUMMARY


1. Identification for conductors.

2. Underground-line warning tape.

3. Warning labels and signs.

4. Instruction signs.

5. Equipment identification labels.


A. Product Data: For each electrical identification product indicated.

B. Samples: For each type of label and sign to illustrate size, colors, lettering style, mounting

provisions, and graphic features of identification products.

C. Identification Schedule: An index of nomenclature of electrical equipment and system

components used in identification signs and labels.


A. Comply with ANSI A13.1 and IEEE C2.


C. Comply with 29 CFR 1910.144 and 29 CFR 1910.145.

D. Adhesive-attached labeling materials, including label stocks, laminating adhesives, and inks

used by label printers, shall comply with UL 969.

1.5 COORDINATION

A. Coordinate identification names, abbreviations, colors, and other features with requirements in

other Sections requiring identification applications, Drawings, Shop Drawings, manufacturer's

wiring diagrams, and the Operation and Maintenance Manual; and with those required by codes,

standards, and 29 CFR 1910.145. Use consistent designations throughout Project.

B. Coordinate installation of identifying devices with completion of covering and painting of

surfaces where devices are to be applied.




C. Coordinate installation of identifying devices with location of access panels and doors.

D. Install identifying devices before installing acoustical ceilings and similar concealment.

PART 2 - PRODUCTS

2.1 CONDUCTOR IDENTIFICATION MATERIALS

A. Color-Coding Conductor Tape: Colored, self-adhesive vinyl tape not less than 3 mils (0.08 mm)

thick by 1 to 2 inches (25 to 50 mm) wide.

2.2 UNDERGROUND-LINE WARNING TAPE

A. Tape:

1. Recommended by manufacturer for the method of installation and suitable to identify and

locate underground electrical utility lines.

2. Printing on tape shall be permanent and shall not be damaged by burial operations.

3. Tape material and ink shall be chemically inert, and not subject to degrading when

exposed to acids, alkalis, and other destructive substances commonly found in soils.

B. Color and Printing:

1. Comply with ANSI Z535.1 through ANSI Z535.5.

2. Inscriptions for Red-Colored Tapes: ELECTRIC LINE, HIGH VOLTAGE.

C. Tag: [Type II]:

1. Multilayer laminate consisting of high-density polyethylene scrim coated with pigmented

polyolefin, bright-colored, compounded for direct-burial service.

2. Thickness: 12 mils (0.3 mm).

3. Weight: 36.1 lb/1000 sq. ft. (17.6 kg/100 sq. m).

4. 3-Inch (75-mm) Tensile According to ASTM D 882: 400 lbf (1780 N), and 11,500 psi

(79.2 MPa).

2.3 WARNING LABELS AND SIGNS

A. Comply with NFPA 70 and 29 CFR 1910.145.

B. Self-Adhesive Warning Labels: Factory-printed, multicolor, pressure-sensitive adhesive labels,

configured for display on front cover, door, or other access to equipment unless otherwise

indicated.

C. Warning label and sign shall include, but are not limited to, the following legends:

1. Multiple Power Source Warning: "DANGER - ELECTRICAL SHOCK HAZARD -

EQUIPMENT HAS MULTIPLE POWER SOURCES." Typical, two double-throw

switches.




2. Workspace Clearance Warning: "WARNING - OSHA REGULATION - AREA IN

FRONT OF ELECTRICAL EQUIPMENT MUST BE KEPT CLEAR FOR 36 INCHES

(915 MM)." Typical, pullboxes and chiller control panels (existing and new).

2.4 INSTRUCTION SIGNS

A. Engraved, laminated acrylic or melamine plastic, minimum 1/16 inch (1.6 mm) thick for signs

up to 20 sq. inches (129 sq. cm) and 1/8 inch (3.2 mm) thick for larger sizes.

1. Engraved legend with black letters on white face.

2. Punched or drilled for mechanical fasteners.

3. Framed with mitered acrylic molding and arranged for attachment at applicable

equipment.

B. Adhesive Film Label with Clear Protective Overlay: Machine printed, in black, by thermal

transfer or equivalent process. Minimum letter height shall be 3/8 inch (10 mm). Overlay shall

provide a weatherproof and UV-resistant seal for label.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Verify identity of each item before installing identification products.

B. Location: Install identification materials and devices at locations for most convenient viewing

without interference with operation and maintenance of equipment.

C. Apply identification devices to surfaces that require finish after completing finish work.

D. Self-Adhesive Identification Products: Clean surfaces before application, using materials and

methods recommended by manufacturer of identification device.

E. Attach signs and plastic labels that are not self-adhesive type with mechanical fasteners

appropriate to the location and substrate.

F. Underground-Line Warning Tape: During backfilling of trenches install continuous

underground-line warning tape directly above line at 6 to 8 inches (150 to 200 mm) below

finished grade. Use multiple tapes where width of multiple lines installed in a common trench

[or concrete envelope ]exceeds 16 inches (400 mm) overall.

G. Painted Identification: Comply with requirements in painting Sections for surface preparation

and paint application.

3.2 IDENTIFICATION SCHEDULE

A. Power-Circuit Conductor Identification, 600 V or Less: For conductors in vaults, pull and

junction boxes, manholes, and handholes, use color-coding conductor tape to identify the phase.




1. Color-Coding for Phase Identification, 600 V or Less: Use colors listed below for

ungrounded feeder conductors.

a. Color shall be field applied for sizes larger than No. 8 AWG, if authorities having

jurisdiction permit].

b. Colors for 208/120-V Circuits:

1) Phase A: Black.

2) Phase B: Red.

3) Phase C: Blue.

c. Field-Applied, Color-Coding Conductor Tape: Apply in half-lapped turns for a

minimum distance of 6 inches (150 mm) from terminal points and in boxes where

splices or taps are made. Apply last two turns of tape with no tension to prevent

possible unwinding. Locate bands to avoid obscuring factory cable markings.

B. Install instructional sign including the color-code for grounded and ungrounded conductors

using adhesive-film-type labels.

C. Control-Circuit Conductor Identification: For conductors and cables in pull and junction boxes,

manholes, and handholes, use write-on tags with the conductor or cable designation, origin, and

destination.

D. Auxiliary Electrical Systems Conductor Identification: Identify field-installed alarm, control,

and signal connections.

1. Identify conductors, cables, and terminals in enclosures and at junctions, terminals, and

pull points. Identify by system and circuit designation.

2. Use system of marker tape designations that is uniform and consistent with system used

by manufacturer for factory-installed connections.

3. Coordinate identification with Project Drawings, manufacturer's wiring diagrams, and the

Operation and Maintenance Manual.

E. Locations of Underground Lines: Identify with underground-line warning tape for power,

lighting, communication, and control wiring and optical fiber cable.

1. Limit use of underground-line warning tape to direct-buried cables.

2. Install underground-line warning tape for both direct-buried cables and cables in

raceway.

F. Workspace Indication: Install floor marking tape to show working clearances in the direction of

access to live parts. Workspace shall be as required by NFPA 70 and 29 CFR 1926.403 unless

otherwise indicated. Do not install at flush-mounted panelboards and similar equipment in

finished spaces.

G. Operating Instruction Signs: Install instruction signs to facilitate proper operation and

maintenance of electrical systems and items to which they connect. Install instruction signs with

approved legend where instructions are needed for system or equipment operation.




H. Emergency Operating Instruction Signs: Install instruction signs with white legend on a red

background with minimum 3/8-inch- (10-mm-) high letters for emergency instructions at

equipment used for power transfer.

I. Equipment Identification Labels: On each unit of equipment, install unique designation label

that is consistent with wiring diagrams, schedules, and the Operation and Maintenance Manual.

Apply labels to disconnect switches and protection equipment, central or master units, control

panels, control stations, terminal cabinets, and racks of each system. Systems include power,

lighting, control, communication, signal, monitoring, and alarm systems unless equipment is

provided with its own identification.

1. Labeling Instructions:

a. Indoor Equipment: Engraved, laminated acrylic or melamine label. Unless

otherwise indicated, provide a single line of text with 1/2-inch- (13-mm-) high

letters on 1-1/2-inch- (38-mm-) high label; where two lines of text are required, use

labels 2 inches (50 mm) high.

b. Outdoor Equipment: Engraved, laminated acrylic or melamine label.

c. Elevated Components: Increase sizes of labels and letters to those appropriate for

viewing from grade.

d. Unless provided with self-adhesive means of attachment, fasten labels with

appropriate mechanical fasteners that do not change the NEMA or NRTL rating of

the enclosure.

2. Equipment to Be Labeled:Identification labeling of some items listed below may be

required by individual Sections or by NFPA 70.

a. Access doors and panels for concealed electrical items.

b. Switchboards – All breakers that are added or relocated

c. Power transfer equipment.

d. Monitoring and control equipment.




MOTOR-CONTROL CENTERS 262419 - 1

SECTION 262419 - MOTOR-CONTROL CENTERS

PART 1 - GENERAL




1.2 SUMMARY

A. Section includes MCCs for use with ac circuits rated 600 V and less, with combination

controllers and having the following factory-installed components:

1. Feeder-tap units.

2. Measurement and control.

3. Variable Frequency Controller

4. Combination Starters

1.3 DEFINITIONS

A. CPT: Control power transformer.

B. MCC: Motor-control center.

C. MCCB: Molded-case circuit breaker.

D. MCP: Motor-circuit protector.

E. OCPD: Overcurrent protective device.

F. PT: Potential transformer.

G. SPD: Surge protective device.

H. SCR: Silicon-controlled rectifier.

I. VFC: Variable-frequency controller.

J. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 V or

for remote-control, signaling power-limited circuits.






1. Include construction details, material descriptions, dimensions of individual components

and profiles, and finishes for MCCs.

2. Include rated capacities, operating characteristics, electrical characteristics, and furnished

specialties and accessories for each cell of the MCC.

B. Shop Drawings: For each MCC, manufacturer's approval and production drawings as defined

in UL 845. In addition to requirements specified in UL 845, include dimensioned plans,

elevations, and sections; and conduit entry locations and sizes, mounting arrangements, and

details, including required clearances and service space around equipment.

1. Show tabulations of installed devices, equipment features, and ratings. Include the

following:

a. Each installed unit's type and details.

b. Factory-installed devices.

c. Enclosure types and details.

d. Nameplate legends.

e. Short-circuit current (withstand) rating of complete MCC, and for bus structure

and each unit.

f. Features, characteristics, ratings, and factory settings of each installed controller

and feeder device, and installed devices.

g. Specified optional features and accessories.

2. Schematic Wiring Diagrams: For power, signal, and control wiring for each installed

controller.

3. Nameplate legends.

4. Vertical and horizontal bus capacities.

5. Features, characteristics, ratings, and factory settings of each installed unit.


A. Standard Drawings: For each MCC, as defined in UL 845.

B. Production Drawings: For each MCC, as defined in UL 845.

C. Coordination Drawings: Floor plans, drawn to scale, showing dimensioned layout, required

working clearances, and required area above and around MCCs where pipe and ducts are

prohibited. Show MCC layout and relationships between electrical components and adjacent

structural and mechanical elements. Show support locations, type of support, and weight on

each support. Indicate field measurements.

D. Qualification Data: For testing agency.

E. Product Certificates: For each MCC.

F. Source quality-control reports.

G. Field quality-control reports.




H. Load-Current and Overload Relay Heater List: Compile after motors have been installed, and

arrange to demonstrate that selection of heaters suits actual motor nameplate full-load currents.

I. Load-Current and List of Settings of Adjustable Overload Relays: Compile after motors have

been installed, and arrange to demonstrate that switch settings for motor running overload

protection suit actual motors to be protected.

J. Sample Warranty: For special warranty.


A. Operation and Maintenance Data: For MCCs, all installed devices, and components to include

in emergency, operation, and maintenance manuals.

1. In addition to items specified in Section 017823 "Operation and Maintenance Data,"

include the following:

2. Manufacturer's Record Drawings: As defined in UL 845. In addition to requirements

specified in UL 845, include field modifications incorporated during construction by

manufacturer, Contractor, or both.

3. Manufacturer's written instructions for testing and adjusting circuit breaker and MCP trip

settings.

4. Manufacturer's written instructions for setting field-adjustable overload relays.

5. Manufacturer's written instructions for testing, adjusting, and reprogramming reduced-

voltage, solid-state controllers.

6. Manufacturer's written instructions for testing, adjusting, and reprogramming

microprocessor control modules.

7. Manufacturer's written instructions for setting field-adjustable timers, controls, and status

and alarm points.

1.7 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective

covering for storage and identified with labels describing contents.

1. Indicating Lights: [Two] <Insert number> of each type and color installed.

2. Auxiliary Contacts: Furnish [one] <Insert number> spare(s) for each size and type of

magnetic controller installed.

3. Power Contacts: Furnish [three] <Insert number> spares for each size and type of

magnetic contactor installed.


A. Testing Agency Qualifications: Member company of NETA.





B. Source Limitations: Obtain MCCs and controllers of a single type from single source from

single manufacturer.

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,

and marked for intended use.

D. UL Compliance: MCCs shall comply with UL 845 and shall be listed and labeled by a qualified

testing agency.


A. Deliver MCCs in shipping splits of lengths that can be moved past obstructions in delivery

paths.

B. Handle MCCs according to the following:

1. NECA 402, "Recommended Practice for Installing and Maintaining Motor Control

Centers."

2. NEMA ICS 2.3, "Instructions for the Handling, Installation, Operation, and Maintenance

of Motor Control Centers Rated Not More Than 600 Volts."

1.10 WARRANTY


replace MCC and SPD that fail in materials or workmanship within specified warranty period.

1. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Eaton

B. Square D

C. General Electric


A. NEMA Compliance: Fabricate and label MCCs to comply with NEMA ICS 18.

B. Ambient Environment Ratings:

1. Ambient Temperature Rating: Not less than 0 deg F (minus 18 deg C) and not exceeding

104 deg F (40 deg C), with an average value not exceeding 95 deg F (35 deg C) over a

24-hour period.




2. Ambient Storage Temperature Rating: Not less than minus 4 deg F (minus 20 deg C) and

not exceeding 140 deg F (60 deg C)

3. Humidity Rating: Less than 95 percent (noncondensing).

4. Altitude Rating: Not exceeding 3300 feet (1000 m) if MCC includes solid-state devices.

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by



A. Capacities and Characteristics:

1. MCC Enclosure and Assembly:

a. Nominal System Voltage: 277/480V ac.

b. Service Equipment Rated: No.

c. Enclosure: NEMA 250, Type 1.

2. Integrated Short-Circuit Rating for MCC:

a. Fully rated; 65 kA.

3. Integrated Short-Circuit Rating for Each Unit:

a. Fully rated; 65 kA.

4. Wiring Class: Class 1, Type BD.

5. Bus:

a. Horizontal Bus: As listed on drawings

b. Neutral Bus: Full size.

2.4 ENCLOSURES

A. Indoor Enclosures: Freestanding steel cabinets unless otherwise indicated. NEMA 250, Type 1

unless otherwise indicated to comply with environmental conditions at installed location.

B. Enclosure Finish for Indoor Units: Factory-applied finish in manufacturer's standard gray

finish over a rust-inhibiting primer on treated metal surface.

2.5 ASSEMBLY

A. Structure:

1. Comply with UL requirements for service entrance equipment.

2. Units up to and including Size 3 shall have drawout mountings with connectors that

automatically line up and connect with vertical-section buses while being racked into

their normal, energized positions.

3. Units in Type B and Type C MCCs shall have pull-apart terminal strips for external

control connections.

4. Pull Boxes:




a. Include provisions for ventilation to maintain temperature in pull box within same

limits as the MCC.

b. Set the box back from front to clear circuit-breaker removal mechanism.

c. Covers: Removable covers forming top, front, and sides.

d. Insulated bottom of fire-resistive material with separate holes for cable drops into

MCC.

e. Cable Supports: Arranged to facilitate cabling and adequate to support cables,

including supports for future cables.

f. When equipped with barriers, supply with access to check bus bolt tightness.

B. Compartments: Modular; individual doors with concealed hinges and quick-captive screw

fasteners.

1. Interlock compartment door to require that the disconnecting means is "off" before door

can be opened or closed, except by operating a concealed release device.

2. Compartment construction shall allow for removal of units without opening adjacent

doors, disconnecting adjacent compartments, or disturbing operation of other units in

MCC.

3. The same-size compartments shall be interchangeable to allow rearrangement of units,

such as replacing three single units with a unit requiring three spaces, without cutting or

welding.

C. Interchangeability: Compartments constructed to allow for removal of units without opening

adjacent doors, disconnecting adjacent compartments, or disturbing operation of other units in

MCC; same-size compartments to permit interchangeability and ready rearrangement of units,

such as replacing three single units with a unit requiring three spaces, without cutting or

welding.

D. Wiring Spaces:

1. Vertical wireways in each vertical section for vertical wiring to each unit compartment;

supports to hold wiring in place.

2. Horizontal wireways in bottom and top of each vertical section for horizontal wiring

between vertical sections; supports to hold wiring in place.

E. Provisions for Future:

1. Compartments marked "future" shall be bused, wired and equipped with guide rails or

equivalent, and ready for insertion of drawout units.

2. Compartments marked "spare" shall include provisions for connection to the vertical bus.

F. Integrated Short-Circuit Rating:

1. Short-Circuit Current Rating for Each Unit: Fully rated; 65 kA.

2. Short-Circuit Current Rating of MCC: Fully rated with its main overcurrent device; 65

kA.

G. Control Power:




1. 120V ac; obtained from CPT integral with controller; with primary and secondary fuses.

The CPT shall be of sufficient capacity to operate integral devices and remotely located

pilot, indicating, and control devices.

a. CPT Spare Capacity: 50VA.

H. Factory-Installed Wiring: Factory installed, with bundling, lacing, and protection included. Use

flexible conductors for No. 8 AWG and smaller, for conductors across hinges, and for

conductors for interconnections between shipping units.

1. Wiring Class: NEMA ICS 18, Class I, Type B-D, for starters Size 3 and smaller

2. Control and Load Wiring: Factory installed, with bundling, lacing, and protection

included. Use flexible conductors for No. 8 AWG and smaller, for conductors across

hinges, and for conductors for interconnections between shipping units.

I. Bus:

1. Main Horizontal and Equipment Ground Buses: Uniform capacity for entire length of

MCC's main and vertical sections. Provide for future extensions.

2. Vertical Phase and Equipment Ground Buses: Uniform capacity for entire usable height

of vertical sections, except for sections incorporating single units.

3. Phase- and Neutral-Bus Material: Hard-drawn copper of 98 percent minimum

conductivity or tin-plated, high-strength, electrical-grade aluminum alloy, with

mechanical connectors for outgoing conductors.

4. Ground Bus: Hard-drawn copper of 98 percent minimum conductivity, with pressure

connector for ground conductors, minimum size 1/4-by-2 inches (6 by 50 mm). Equip

with mechanical connectors for outgoing conductors.

5. Bus-Bar Insulation: Factory-applied, flame-retardant, tape wrapping of individual bus

bars or flame-retardant, spray-applied insulation. Insulation temperature rating shall not

be less than 105 deg C.

2.6 MAIN DISCONNECT AND OVERCURRENT PROTECTIVE DEVICE(S)

A. Surge Suppression: Factory installed as an integral part of the incoming feeder, complying with

UL 1449, SPD Type 1.

2.7 MAGNETIC CONTROLLERS

A. Controller Units: Combination controllers.

B. Disconnects:

1. MCP:

a. UL 489, with interrupting capacity complying with available fault currents,

instantaneous-only circuit breaker with front-mounted, field-adjustable, short-

circuit trip coordinated with motor locked-rotor amperes.

b. Lockable Handle: For three padlocks and interlocks with cover in closed position.

c. Auxiliary contacts "a" and "b" arranged to activate with MCP handle.




d. NC alarm contact that operates only when MCP has tripped.

e. Current-limiting module to increase controller short-circuit current (withstand)

rating to 100 kA.

2. MCCB:

a. UL 489, with interrupting capacity to comply with available fault currents;

thermal-magnetic MCCB, with inverse time-current element for low-level

overloads and instantaneous magnetic trip element for short circuits.

b. Front-mounted, adjustable magnetic trip setting for circuit-breaker frame sizes

250 A and larger.

c. Lockable Handle: For three padlocks and interlocks with cover in closed position.

d. Auxiliary contacts "a" and "b" arranged to activate with MCCB handle.

e. NC alarm contact that operates only when MCCB has tripped.

C. Controllers: Comply with UL 508.

1. Full-Voltage Magnetic Controllers: Electrically held, full voltage, NEMA ICS 2, general

purpose, Class A.

a. Classification: Nonreversing.

D. Overload Relays:

1. Solid-State Overload Relays:

a. Switch or dial selectable for motor-running overload protection.

b. Sensors in each phase.

c. Class 10/20 selectable tripping characteristic selected to protect motor against

voltage and current unbalance and single phasing.

d. UL 1053 Class II ground-fault protection, with start and run delays to prevent

nuisance trip on starting.

e. Analog communication module.

2. NC isolated overload alarm contact.

3. External overload reset push button.

2.8 VFC

A. Controller Units: Combination controllers, consisting of variable-frequency power converter

that is factory packaged in an enclosure, with integral disconnecting means and overcurrent and

overload protection; listed and labeled by an NRTL as a complete unit; arranged for self-

protection, protection, and variable-speed control of one or more three-phase induction motors

by adjusting output voltage and frequency. Comply with NEMA ICS 7, NEMA ICS 61800-2,

UL 508C, and UL 508E.

1. Units suitable for operation of NEMA MG 1, Design A and Design B motors as defined

by NEMA MG 1, Section IV, Part 30, "Application Considerations for Constant Speed

Motors Used on a Sinusoidal Bus with Harmonic Content and General Purpose Motors

Used with Adjustable-Voltage or Adjustable-Frequency Controls or Both."




2. Units suitable for operation of inverter-duty motors as defined by NEMA MG 1,

Section IV, Part 31, "Definite-Purpose Inverter-Fed Polyphase Motors."

3. Listed and labeled for integrated short-circuit current (withstand) rating by an NRTL

acceptable to authorities having jurisdiction.

4. Listed and labeled for single-phase use by an NRTL acceptable to authorities having

jurisdiction.

B. Disconnects:

1. MCCB:

a. UL 489, with interrupting capacity to comply with available fault currents;

thermal-magnetic MCCB, with inverse time-current element for low-level

overloads and instantaneous magnetic trip element for short circuits.

b. Front-mounted, adjustable magnetic trip setting for circuit-breaker frame sizes

250 A and larger.

c. Lockable Handle: For three padlocks and interlocks with cover in closed position.

d. Auxiliary contacts "a" and "b" arranged to activate with MCCB handle.

e. NC alarm contact that operates only when MCCB has tripped.

2. Disconnect Rating: Not less than 115 percent of VFC input current rating.

3. Disconnect Rating: Not less than 115 percent of NFPA 70 motor full-load current rating

or VFC input current rating, whichever is larger.

4. Auxiliary Contacts: NC, arranged to activate before switch blades open.

5. Auxiliary contacts "a" and "b" arranged to activate with circuit-breaker handle.

C. Operating Requirements:

1. Input AC Voltage Tolerance: Plus 10 and minus 15 percent of VFC input voltage rating.

2. Input AC Voltage Unbalance: Not exceeding 3 percent.

3. Input Frequency Tolerance: Plus or minus 3 percent of VFC frequency rating.

4. Minimum Efficiency: 96 percent at 60 Hz, full load.

5. Minimum Displacement Primary-Side Power Factor: 96 percent under any load or speed

condition.

6. Overload Capability:

a. For variable-torque controllers, 1.1 times the base load current for 60 seconds;

minimum of 1.8 times the base load current for three seconds.

b. For constant-torque controllers, 1.5 times the base load current for 60 seconds;

minimum of 1.8 times the base load current for three seconds.

7. Starting Torque: Minimum of 100 percent of rated torque from 3 to 60 Hz.

8. Speed Regulation: Plus or minus 5 percent.

9. Output Carrier Frequency: Field selectable.

10. Stop Modes: Programmable; includes fast, free-wheel, and dc injection braking.

11. Internal Adjustability Capabilities:

a. Minimum Speed: 5 to 25 percent of maximum rpm.

b. Maximum Speed: 80 to 100 percent of maximum rpm.

c. Acceleration: 0.1 to 999.9 seconds.

d. Deceleration: 0.1 to 999.9 seconds.




e. Current Limit: 30 to a minimum of 150 percent of maximum rating.

12. Self-Protection and Reliability Features:

a. Input transient protection by means of surge suppressors for three-phase protection

against damage from supply voltage surges 10 percent or more above nominal line

voltage.

b. Loss of Input Signal Protection: Selectable response strategy including speed

default to a percent of the most recent speed, a preset speed, or stop; with alarm.

c. Under- and overvoltage trips.

d. Inverter overcurrent trips.

e. VFC and Motor Overload/Overtemperature Protection: Microprocessor-based

thermal protection system for monitoring VFCs and motor thermal characteristics,

and for providing VFC overtemperature and motor overload alarm and trip;

settings selectable via the keypad; NRTL approved and listed and labeled by an

NRTL.

f. Critical frequency rejection, with three selectable, adjustable deadbands.

g. Instantaneous line-to-line and line-to-ground overcurrent trips.

h. Loss-of-phase protection.

i. Reverse-phase protection.

j. Short-circuit protection.

k. Motor overtemperature fault.

13. Torque Boost: Automatically varies starting and continuous torque to at least 1.5 times

the minimum torque to ensure high-starting torque and increased torque at slow speeds.

14. Motor Temperature Compensation at Slow Speeds: Adjustable current fall-back based on

output frequency for temperature protection of self-cooled, fan-ventilated motors at slow

speeds.

D. Operator Station:

1. Inverter Logic: Microprocessor based, [16] [32] bit, isolated from all power circuits.

2. Isolated Control Interface: Allows VFCs to follow remote-control signal over a minimum

40:1 speed range.

3. Panel-mounted, manufacturer's standard front-accessible, sealed keypad and plain-

English-language digital display; allows complete programming, program copying,

operating, monitoring, and diagnostic capability.

a. Keypad: In addition to required programming and control keys, include keys for

HAND, OFF, and AUTO modes.

b. Security Access: Electronic security access to controls through identification and

password with at least three levels of access: View only; view and operate; and

view, operate, and service.

E. Displays:

1. Historical Logging Information and Displays:

a. Real-time clock with current time and date.

b. Running log of total power versus time.

c. Total run time.




d. Fault log, maintaining last four faults with time and date stamp for each.

2. Indicating Devices: Digital display and additional readout devices as required,

mounted flush in VFC door and connected to display VFC parameters including the

following:

a. Output frequency (Hz).

b. Motor speed (rpm).

c. Motor status (running, stop, fault).

d. Motor current (amperes).

e. Motor torque (percentage).

f. Fault or alarming status (code).

g. PID feedback signal (percentage).

h. DC-link voltage (V dc).

i. Set-point frequency (Hz).

j. Motor output voltage (V ac).

F. Bypass Systems:

1. Bypass Operation: Safely transfers motor between power converter output and bypass

circuit, manually, automatically, or both. Selector switches set modes, and indicator lights

indicate mode selected. Unit is capable of stable operation (starting, stopping, and

running) with motor completely disconnected from power converter.

2. Bypass Mode: Manual operation only; requires local operator selection at VFC. Transfer

between power converter and bypass contactor and retransfer shall only be allowed with

the motor at zero speed.

3. Bypass Controller: Three-contactor-style bypass allows motor operation via the power

converter or the bypass controller; with input isolating switch and barrier arranged to

isolate the power converter input and output and permit safe testing and troubleshooting

of the power converter, both energized and de-energized, while motor is operating in

bypass mode.

a. Bypass Contactor: Load-break, IEC-rated contactor.

b. Input and Output Isolating Contactors: Non-load-break, IEC-rated contactors.

c. Isolating Switch: Non-load-break switch arranged to isolate power converter and

permit safe troubleshooting and testing of the power converter, both energized and

de-energized, while motor is operating in bypass mode; pad-lockable, door-

mounted handle mechanism.

4. Bypass Contactor Classification: Full-voltage (across-the-line) type.

5. NORMAL/BYPASS selector switch.

a. HAND/OFF/AUTO selector switch.

b. NORMAL/TEST Selector Switch: Allows testing and adjusting of VFC while the

motor is running in the bypass mode.

c. Contactor Coils: Pressure-encapsulated type with coil transient suppressors.

1) Operating Voltage: Depending on contactor NEMA size and line-voltage

rating, manufacturer's standard matching control power or line voltage.




2) Power Contacts: Totally enclosed, double break, and silver-cadmium oxide;

assembled to allow inspection and replacement without disturbing line or

load wiring.

6. Overload Relays: NEMA ICS 2.

a. Solid-State Overload Relays:

1) Switch or dial selectable for motor-running overload protection.

2) Sensors in each phase.

3) Class 10/20 selectable tripping characteristic selected to protect motor

against voltage and current unbalance and single phasing.

4) Class II ground-fault protection, with start and run delays to prevent

nuisance trip on starting.

5) Analog communication module.

b. External overload reset push button.

G. Automatic Reset/Restart: Attempt three restarts after drive fault or on return of power after an

interruption and before shutting down for manual reset or fault correction; adjustable delay time

between restart attempts.

H. Power-Interruption Protection: To prevent motor from re-energizing after a power interruption

until motor has stopped, unless "Bidirectional Autospeed Search" feature is available and

engaged.

I. Bidirectional Autospeed Search: Capable of starting VFC into rotating loads spinning in either

direction and returning motor to set speed in proper direction, without causing damage to drive,

motor, or load.

J. Communication Port: [Ethernet] [RS-232 port] [USB 2.0 port] or equivalent connection

Capable of connecting a printer[ and a notebook computer].

2.9 CONTROLLER-MOUNTED AUXILIARY DEVICES

A. Control-Circuit and Pilot Devices: Factory installed in controller enclosure cover unless

otherwise indicated. Comply with NEMA ICS 5.

1. Push Buttons, Pilot Lights, and Selector Switches: Heavy-duty type.

a. Push Buttons: Unguarded types; momentary contact unless otherwise indicated.

b. Pilot Lights: LED Transformer types; push to test.

c. Selector Switches: Rotary type.

2.10 FEEDER TAP UNITS

A. MCCBs (to 1200 A): Fixed mounted, with inverse time-current element for low-level overloads

and instantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting for

circuit-breaker frame sizes 250 A and larger. Comply with UL 489, and NEMA AB 3, with

interrupting capacity to comply with available fault currents.




1. Adjustable, Instantaneous-Trip Circuit Breakers: Magnetic trip element with front-

mounted, field-adjustable trip setting.


A. MCC Testing: Test and inspect MCCs according to requirements in NEMA ICS 18.

B. VFC Testing: Test and inspect VFCs according to requirements in NEMA ICS 61800-2.

1. Test each VFC while connected to its specified motor.

2. Verification of Performance: Rate VFCs according to operation of functions and features

specified.

C. MCCs will be considered defective if they do not pass tests and inspections.

D. Prepare test and inspection reports.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and surfaces to receive MCCs, with Installer present, for compliance with

requirements for installation tolerances, and other conditions affecting performance of the

Work.


3.2 INSTALLATION

A. NEMA Industrial Control and Systems Standards: Comply with parts of NEMA ICS 2.3 for

installation and startup of MCCs.

B. Floor Mounting: Install MCCs on 4-inch (100-mm) nominal-thickness concrete base. Comply

with requirements for concrete base specified in Section 033000 "Cast-in-Place Concrete."


install dowel rods on 18-inch (450-mm) centers around the full perimeter of concrete

base.






C. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and

temporary blocking of moving parts from enclosures and components.

D. Install fuses in each fusible switch.




E. Install fuses in control circuits if not factory installed. Comply with requirements in

Section 262813 "Fuses."

F. Install heaters in thermal-overload relays. Select heaters based on actual nameplate full-load

amperes after motors have been installed.

G. Install, connect, and fuse thermal-protector monitoring relays furnished with motor-driven

equipment.

H. Comply with NECA 1.

3.3 IDENTIFICATION

A. Comply with requirements in Section 260553 "Identification for Electrical Systems" for

identification of MCC, MCC components, and control wiring.

1. Identify field-installed conductors, interconnecting wiring, and components.

2. Install required warning signs.

3. Label MCC and each cubicle with engraved nameplate.

4. Label each enclosure-mounted control and pilot device.

5. Mark up a set of manufacturer's connection wiring diagrams with field-assigned wiring

identifications and return to manufacturer for inclusion in Record Drawings.

B. Operating Instructions: Frame printed operating instructions for MCCs, including control

sequences and emergency procedures. Fabricate frame of finished metal, and cover instructions

with clear acrylic plastic. Mount on front of MCCs.

3.4 CONTROL WIRING INSTALLATION

A. Install wiring between enclosed controllers and remote devices.

B. Bundle, train, and support wiring in enclosures.

C. Connect selector switches and other automatic-control selection devices where applicable.

1. Connect selector switches to bypass only those manual- and automatic-control devices

that have no safety functions when switch is in manual-control position.

2. Connect selector switches within enclosed controller circuit in both manual and

automatic positions for safety-type control devices such as low- and high-pressure

cutouts, high-temperature cutouts, and motor overload protectors.

3.5 CONNECTIONS

A. Comply with requirements for installation of conduit in Section 260533 "Raceways and Boxes

for Electrical Systems." Drawings indicate general arrangement of conduit, fittings, and

specialties.

B. Comply with requirements in Section 260526 "Grounding and Bonding for Electrical Systems."






B. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

C. Perform tests and inspections with the assistance of a factory-authorized service

representative.

D. Acceptance Testing Preparation:

1. Test insulation resistance for each enclosed controller, component, connecting supply,

feeder, and control circuit.

2. Test continuity of each circuit.

E. Tests and Inspections:

1. Perform each visual and mechanical inspection and electrical test stated in NETA

Acceptance Testing Specification. Certify compliance with test parameters.

2. Operational Test: After electrical circuitry has been energized, start units to confirm

proper motor rotation and unit operation.

3. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment.

4. Perform the following infrared (thermographic) scan tests and inspections and prepare

reports:

a. Initial Infrared Scanning: After Substantial Completion, but not more than 60 days

after Final Acceptance, perform an infrared scan of each multipole enclosed

controller. Remove front panels so joints and connections are accessible to portable

scanner.

b. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of

each multipole enclosed controller 11 months after date of Substantial Completion.

c. Instruments and Equipment: Use an infrared scanning device designed to measure

temperature or to detect significant deviations from normal values. Submit

calibration record for device.

5. Test and adjust controls, remote monitoring, and safeties. Replace damaged and

malfunctioning controls and equipment.

6. Mark up a set of manufacturer's drawings with all field modifications incorporated during

construction and return to manufacturer for inclusion in Record Drawings.

F. MCCs will be considered defective if they do not pass tests and inspections.

G. Prepare test and inspection reports.

3.7 STARTUP SERVICE

A. Perform startup service.




1. Complete installation and startup checks according to NETA Acceptance Testing

Specification and manufacturer's written instructions.

3.8 ADJUSTING

A. Set field-adjustable switches, auxiliary relays, time-delay relays, timers, and overload relay

pickup and trip ranges.

B. Adjust overload relay heaters or settings if power factor correction capacitors are connected to

the load side of the overload relays.

C. Adjust the trip settings of MCPs and thermal-magnetic circuit breakers with adjustable,

instantaneous trip elements. Initially adjust to six times the motor nameplate full-load amperes

and attempt to start motors several times, allowing for motor cool-down between starts. If

tripping occurs on motor inrush, adjust settings in increments until motors start without tripping.

Do not exceed eight times the motor full-load amperes (or 11 times for NEMA Premium

Efficient motors if required). Where these maximum settings do not allow starting of a motor,

notify Architect and Owner before increasing settings.

D. Set field-adjustable switches and program microprocessors for required start and stop sequences

in reduced-voltage, solid-state controllers.

E. Program microprocessors in VFCs for required operational sequences, status indications,

alarms, event recording, and display features. Clear events memory after final acceptance

testing and prior to Substantial Completion.

F. Set field-adjustable circuit-breaker trip ranges.

3.9 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain enclosed controllers.


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