EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING 230516 - 1 Spec.pdf · 2019-01-02 · Mountain Crest...

Mountain Crest Pool Upgrade 0225 06/07/18

EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING 230516 - 1

Mountain Crest Pool HVAC Upgrade

SECTION 230516 - EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Slip-joint, packed expansion joints.

2. Metal, compensator packless expansion joints.

3. Rubber union connector packless expansion joints.

4. Flexible-hose packless expansion joints.

5. Externally pressurized metal-bellows packless expansion joints.

6. Alignment guides and anchors.

7. Pipe loops and swing connections.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Delegated-Design Submittal: For each anchor and alignment guide, including analysis data,

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

1. Design Calculations: Calculate requirements for thermal expansion of piping systems and

for selecting and designing expansion joints, loops, and swing connections.

2. Anchor Details: Detail fabrication of each anchor indicated. Show dimensions and

methods of assembly and attachment to building structure.

3. Alignment Guide Details: Detail field assembly and attachment to building structure.

4. Schedule: Indicate type, manufacturer's number, size, material, pressure rating, end

connections, and location for each expansion joint.

1.3 INFORMATIONAL SUBMITTALS

A. Welding certificates.

1.4 CLOSEOUT SUBMITTALS

A. Maintenance data.

1.5 QUALITY ASSURANCE

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

"Structural Welding Code - Steel."




B. Pipe and Pressure-Vessel Welding Qualifications: Qualify procedures and operators according

to ASME Boiler and Pressure Vessel Code.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Compatibility: Products shall be suitable for piping service fluids, materials, working pressures,

and temperatures.

B. Capability: Products to absorb 200 percent of maximum axial movement between anchors.

2.2 PACKLESS EXPANSION JOINTS

A. Viton Union Connector Expansion Joints:

1. Material: Twin reinforced-rubber spheres

2. Minimum Pressure Rating: 150 psig at 170 deg F (1035 kPa at 77 deg C), unless

otherwise indicated.

3. End Connections for NPS 2 (DN 50) and Smaller: Threaded.

2.3 ALIGNMENT GUIDES AND ANCHORS

A. Alignment Guides:

1. Description: Steel, factory-fabricated alignment guide, with bolted two-section outer

cylinder and base for attaching to structure; with two-section guiding slider for bolting to

pipe.

B. Anchor Materials:

1. Steel Shapes and Plates: ASTM A 36/A 36M.

2. Bolts and Nuts: ASME B18.10 or ASTM A 183, steel hex head.

3. Washers: ASTM F 844, steel, plain, flat washers.

4. Mechanical Fasteners: Insert-wedge-type stud with expansion plug anchor for use in

hardened portland cement concrete, with tension and shear capacities appropriate for

application.

a. Stud: Threaded, zinc-coated carbon steel.

b. Expansion Plug: Zinc-coated steel.

c. Washer and Nut: Zinc-coated steel.

5. Chemical Fasteners: Insert-type stud, bonding-system anchor for use with hardened

portland cement concrete, with tension and shear capacities appropriate for application.

a. Bonding Material: ASTM C 881/C 881M, Type IV, Grade 3, two-component

epoxy resin suitable for surface temperature of hardened concrete where fastener is

to be installed.




b. Stud: ASTM A 307, zinc-coated carbon steel with continuous thread on stud,

unless otherwise indicated.

c. Washer and Nut: Zinc-coated steel.

PART 3 - EXECUTION

3.1 EXPANSION JOINT INSTALLATION

A. Install expansion joints of sizes matching sizes of piping in which they are installed.

B. Install packed-type expansion joints with packing suitable for fluid service.

C. Install metal-bellows expansion joints according to EJMA's "Standards of the Expansion Joint

Manufacturers Association, Inc."

3.2 PIPE LOOP AND SWING CONNECTION INSTALLATION

A. Install pipe loops cold-sprung in tension or compression as required to partly absorb tension or

compression produced during anticipated change in temperature.

B. Connect risers and branch connections to mains with at least five pipe fittings, including tee in

main.

C. Connect risers and branch connections to terminal units with at least four pipe fittings, including

tee in riser.

D. Connect mains and branch connections to terminal units with at least four pipe fittings,

including tee in main.

3.3 ALIGNMENT-GUIDE AND ANCHOR INSTALLATION

A. Install alignment guides to guide expansion and to avoid end-loading and torsional stress.

B. Install two guide(s) on each side of pipe expansion fittings and loops. Install guides nearest to

expansion joint not more than four pipe diameters from expansion joint.

C. Attach guides to pipe, and secure guides to building structure.

D. Install anchors at locations to prevent stresses from exceeding those permitted by ASME B31.9

and to prevent transfer of loading and stresses to connected equipment.

E. Anchor Attachments:

1. Anchor Attachment to Steel Pipe: Attach by welding. Comply with ASME B31.9 and

ASME Boiler and Pressure Vessel Code: Section IX, "Welding and Brazing

Qualifications."




F. Fabricate and install steel anchors by welding steel shapes, plates, and bars. Comply with

ASME B31.9 and AWS D1.1/D1.1M.

1. Anchor Attachment to Steel Structural Members: Attach by welding.

2. Anchor Attachment to Concrete Structural Members: Attach by fasteners. Follow

fastener manufacturer's written instructions.

G. Use grout to form flat bearing surfaces for guides and anchors attached to concrete.

END OF SECTION 230516


METERS AND GAGES FOR HVAC PIPING 230519 - 1


SECTION 230519 - METERS AND GAGES FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Liquid-in-glass thermometers.

2. Duct-thermometer mounting brackets.

3. Thermowells.

4. Dial-type pressure gages.

5. Gage attachments.

6. Flowmeters.

7. Thermal-energy meters.

B. Related Requirements:

1. Section 231123 "Facility Natural-Gas Piping" for gas meters.

2. Section 232216 "Steam and Condensate Piping Specialties" for steam and condensate

meters.


A. Product Data: For each type of product.

B. Shop Drawings:

1. Include diagrams for power, signal, and control wiring.


A. Product Certificates: For each type of meter and gage.


A. Operation and maintenance data.

PART 2 - PRODUCTS

2.1 LIQUID-IN-GLASS THERMOMETERS

A. Metal-Case, Industrial-Style, Liquid-in-Glass Thermometers:

1. Standard: ASME B40.200.




2. Case: Cast aluminum; 7-inch (178-mm) nominal size unless otherwise indicated.

3. Case Form: Adjustable angle unless otherwise indicated.

4. Tube: Glass with magnifying lens and blue or red organic liquid.

5. Tube Background: Nonreflective aluminum with permanently etched scale markings

graduated in deg F (deg C).

6. Window: Glass.

7. Stem: Aluminum and of length to suit installation.

a. Design for Air-Duct Installation: With ventilated shroud.

b. Design for Thermowell Installation: Bare stem.

8. Connector: 1-1/4 inches (32 mm), with ASME B1.1 screw threads.

9. Accuracy: Plus or minus 1 percent of scale range or one scale division, to a maximum of

1.5 percent of scale range.

2.2 DUCT-THERMOMETER MOUNTING BRACKETS

A. Description: Flanged bracket with screw holes, for attachment to air duct and made to hold

thermometer stem.

2.3 THERMOWELLS

A. Thermowells:


2. Description: Pressure-tight, socket-type fitting made for insertion in piping tee fitting.

3. Material for Use with Steel Piping: CSA.

4. Type: Stepped shank unless straight or tapered shank is indicated.

5. External Threads: NPS 1/2, NPS 3/4, or NPS 1, (DN 15, DN 20, or NPS 25,)

ASME B1.20.1 pipe threads.

6. Internal Threads: 1/2, 3/4, and 1 inch (13, 19, and 25 mm), with ASME B1.1 screw

threads.

7. Bore: Diameter required to match thermometer bulb or stem.

8. Insertion Length: Length required to match thermometer bulb or stem.

9. Lagging Extension: Include on thermowells for insulated piping and tubing.

10. Bushings: For converting size of thermowell's internal screw thread to size of

thermometer connection.

B. Heat-Transfer Medium: Mixture of graphite and glycerin.

2.4 DIAL-TYPE PRESSURE GAGES

A. Direct-Mounted, Metal-Case, Dial-Type Pressure Gages:


2. Case: Sealed type(s); cast aluminum or drawn steel; 4-1/2-inch (114-mm) nominal

diameter.

3. Pressure-Element Assembly: Bourdon tube unless otherwise indicated.




4. Pressure Connection: Brass, with NPS 1/4 (DN 8), ASME B1.20.1 pipe threads and

bottom-outlet type unless back-outlet type is indicated.

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

6. Dial: Nonreflective aluminum with permanently etched scale markings graduated in psi

(kPa).

7. Pointer: Dark-colored metal.

8. Window: Glass.

9. Ring: Metal.

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

B. Remote-Mounted, Metal-Case, Dial-Type Pressure Gages:


2. Case: Sealed type; cast aluminum or drawn steel; 4-1/2-inch (114-mm) nominal diameter

with back flange and holes for panel mounting.

3. Pressure-Element Assembly: Bourdon tube unless otherwise indicated.

4. Pressure Connection: Brass, with NPS 1/4 (DN 8), ASME B1.20.1 pipe threads and

bottom-outlet type unless back-outlet type is indicated.

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

6. Dial: Nonreflective aluminum with permanently etched scale markings graduated in psi

(kPa).

7. Pointer: Dark-colored metal.

8. Window: Glass.

9. Ring: Metal.

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

2.5 GAGE ATTACHMENTS

A. Snubbers: ASME B40.100, brass; with NPS 1/4 (DN 8), ASME B1.20.1 pipe threads and

porous-metal-type surge-dampening device. Include extension for use on insulated piping.

B. Siphons: Loop-shaped section of steel pipe with NPS 1/4 (DN 8) pipe threads.

C. Valves: Brass ball, with NPS 1/4 (DN 8), ASME B1.20.1 pipe threads.

2.6 FLOWMETERS

A. Pitot-Tube Flowmeters:

1. Description: Flowmeter with sensor and indicator.

2. Flow Range: Sensor and indicator shall cover operating range of equipment or system

served.

3. Sensor: Insertion type; for inserting probe in piping and measuring flow directly in

gallons per minute (liters per second).

a. Design: Differential-pressure-type measurement for water.

b. Construction: Stainless-steel probe of length to span inside of pipe, with integral

transmitter and direct-reading scale.

c. Minimum Pressure Rating: 150 psig (1035 kPa).

d. Minimum Temperature Rating: 250 deg F (121 deg C).




4. Indicator: Hand-held meter; either an integral part of sensor or a separate meter.

5. Integral Transformer: For low-voltage power connection.

6. Accuracy: Plus or minus 3 percent.

7. Display: Shows rate of flow.

8. Operating Instructions: Include complete instructions with each flowmeter.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install thermowells with socket extending a minimum of 2 inches (51 mm) into fluid to center

of pipe and in vertical position in piping tees.

B. Install thermowells of sizes required to match thermometer connectors. Include bushings if

required to match sizes.

C. Install thermowells with extension on insulated piping.

D. Fill thermowells with heat-transfer medium.

E. Install direct-mounted thermometers in thermowells and adjust vertical and tilted positions.

F. Install remote-mounted thermometer bulbs in thermowells and install cases on panels; connect

cases with tubing and support tubing to prevent kinks. Use minimum tubing length.

G. Install duct-thermometer mounting brackets in walls of ducts. Attach to duct with screws.

H. Install direct-mounted pressure gages in piping tees with pressure gage located on pipe at the

most readable position.

I. Install remote-mounted pressure gages on panel.

J. Install valve and snubber in piping for each pressure gage for fluids (except steam).

K. Install valve and syphon fitting in piping for each pressure gage for steam.

L. Install test plugs in piping tees.

M. Install flow indicators in piping systems in accessible positions for easy viewing.

N. Assemble and install connections, tubing, and accessories between flow-measuring elements

and flowmeters according to manufacturer's written instructions.

O. Install flowmeter elements in accessible positions in piping systems.

P. Install wafer-orifice flowmeter elements between pipe flanges.

Q. Install differential-pressure-type flowmeter elements, with at least minimum straight lengths of

pipe, upstream and downstream from element according to manufacturer's written instructions.




R. Install permanent indicators on walls or brackets in accessible and readable positions.

S. Install connection fittings in accessible locations for attachment to portable indicators.

T. Mount thermal-energy meters on wall if accessible; if not, provide brackets to support meters.

U. Install thermometers in the following locations:

1. Inlet and outlet of each hydronic zone.

2. Inlet and outlet of each hydronic boiler.

3. Inlet and outlet of each hydronic coil in air-handling units.

4. Two inlets and two outlets of each hydronic heat exchanger.

5. Inlet and outlet of each thermal-storage tank.

6. Outside-, return-, supply-, and mixed-air ducts.

V. Install pressure gages in the following locations:

1. Discharge of each pressure-reducing valve.

2. Inlet and outlet of each chiller chilled-water and condenser-water connection.

3. Suction and discharge of each pump.

3.2 CONNECTIONS

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

maintenance of meters, gages, machines, and equipment.

B. Connect flowmeter-system elements to meters.

C. Connect flowmeter transmitters to meters.

D. Connect thermal-energy meter transmitters to meters.

3.3 ADJUSTING

A. After installation, calibrate meters according to manufacturer's written instructions.

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

3.4 THERMOMETER SCHEDULE

A. Thermometers at inlet and outlet of each hydronic zone shall be the following:

1. Industrial-style, liquid-in-glass type.

B. Thermometers at inlet and outlet of each hydronic boiler shall be the following:


C. Thermometers at inlet and outlet of each hydronic coil in air-handling units and built-up central

systems shall be the following:





D. Thermometers at inlets and outlets of each hydronic heat exchanger shall be the following:


E. Thermometers at inlet and outlet of each hydronic heat-recovery unit shall be the following:


F. Thermometers at inlet and outlet of each thermal-storage tank shall be the following:


G. Thermometers at outside-, return-, supply-, and mixed-air ducts shall be the following:


H. Thermometer stems shall be of length to match thermowell insertion length.

3.5 THERMOMETER SCALE-RANGE SCHEDULE

A. Scale Range for Heating, Hot-Water Piping: 0 to 250 deg F (0 to 150 deg C).

B. Scale Range for Air Ducts: Minus 40 to plus 160 deg F (Minus 40 to plus 100 deg C).

3.6 PRESSURE-GAGE SCHEDULE

A. Pressure gages at discharge of each pressure-reducing valve shall be the following:

1. Sealed, direct-mounted, metal case.

B. Pressure gages at suction and discharge of each pump shall be the following:

1. Sealed, direct-mounted, metal case.

3.7 PRESSURE-GAGE SCALE-RANGE SCHEDULE

A. Scale Range for Heating, Hot-Water Piping: 0 to 160 psi (0 to 1100 kPa).

3.8 FLOWMETER SCHEDULE

A. Flowmeters for Heating, Hot-Water Piping: Pitot-tube type.



GLOBE VALVES FOR HVAC PIPING 230523.11 - 1


SECTION 230523.11 - GLOBE VALVES FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Bronze globe valves.

2. Iron globe valves.


A. Product Data: For each type of valve.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR VALVES

A. Source Limitations for Valves: Obtain each type of valve from single source from single

manufacturer.

B. ASME Compliance:

1. ASME B1.20.1 for threads for threaded-end valves.

2. ASME B16.1 for flanges on iron valves.

3. ASME B16.10 and ASME B16.34 for ferrous valve dimensions and design criteria.

4. ASME B16.18 for solder-joint connections.

5. ASME B31.1 for power piping valves.

6. ASME B31.9 for building services piping valves.

C. Refer to HVAC valve schedule articles for applications of valves.

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

pressures and temperatures.

E. Valve Sizes: Same as upstream piping unless otherwise indicated.

F. Valves in Insulated Piping: With 2-inch (50-mm) stem extensions.

2.2 BRONZE GLOBE VALVES

A. Bronze Globe Valves, Class 125:

1. Description:




a. Standard: MSS SP-80, Type 1.

b. CWP Rating: 200 psig (1380 kPa).

c. Body Material: ASTM B 62, bronze with integral seat and screw-in bonnet.

d. Ends: Threaded or solder joint.

e. Stem and Disc: PTFE.

f. Packing: Asbestos free.

g. Handwheel: Malleable iron.

2.3 IRON GLOBE VALVES

A. Iron Globe Valves, Class 125:

1. Description:

a. Standard: MSS SP-85, Type I.


c. Body Material: ASTM A 126, gray iron with bolted bonnet.

d. Ends: Flanged.

e. Trim: Bronze.

f. Packing and Gasket: Asbestos free.

g. Operator: Handwheel or chainwheel.

PART 3 - EXECUTION

3.1 VALVE INSTALLATION

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

maintenance, and equipment removal without system shutdown.

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

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

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

3.2 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.

3.3 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS

A. If valve applications are not indicated, use the following:

1. Throttling Service except Steam: Globe valves.

2. Throttling Service, Steam: Globe valves.




B. If valves with specified CWP ratings are unavailable, the same types of valves with higher CWP

ratings may be substituted.

C. Select valves with the following end connections:

1. For Steel Piping, NPS 2 (DN 50) and Smaller: Threaded ends.

2. For Steel Piping, NPS 2-1/2 to NPS 4 (DN 65 to DN 100): Flanged ends except where

threaded valve-end option is indicated in valve schedules.

3.4 HEATING-WATER VALVE SCHEDULE

A. Pipe NPS 2 (DN 50) and Smaller: Bronze globe valves, Class 125, with PTFE disc, and

threaded ends.

B. Pipe NPS 2-1/2 (DN 65) and Larger: Iron globe valves, Class 125, with flanged ends.

END OF SECTION 230523.11


BALL VALVES FOR HVAC PIPING 230523.12 - 1


SECTION 230523.12 - BALL VALVES FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Brass ball valves.

2. Bronze ball valves.



PART 2 - PRODUCTS



manufacturer.

B. ASME Compliance:



3. ASME B16.18 for solder-joint connections.



C. Bronze valves shall be made with dezincification-resistant materials. Bronze valves made with

copper alloy (brass) containing more than 15 percent zinc are not permitted.

D. Refer to HVAC valve schedule articles for applications of valves.

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


F. Valve Sizes: Same as upstream piping unless otherwise indicated.

G. Valve Actuator Types:

1. Gear Actuator: For quarter-turn valves NPS 4 (DN 100) and larger.

2. Handlever: For quarter-turn valves smaller than NPS 4 (DN 100).




H. Valves in Insulated Piping:

1. Include 2-inch (50-mm) stem extensions.

2. Extended operating handle of nonthermal-conductive material, and protective sleeves that

allow operation of valves without breaking the vapor seals or disturbing insulation.

3. Memory stops that are fully adjustable after insulation is applied.

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

2.2 BRASS BALL VALVES

A. Brass Ball Valves, One Piece:

1. Description:

a. Standard: MSS SP-110.


c. Body Design: One piece.

d. Body Material: Forged brass.

e. Ends: Threaded.

f. Seats: PTFE.

g. Stem: Brass.

h. Ball: Chrome-plated brass.

i. Port: Reduced.

B. Brass Ball Valves, Two-Piece with Full Port and Brass Trim, Press Ends:

1. Description:



c. Body Design: Two piece.

d. Body Material: Forged brass.

e. Ends: Press.

f. Seats: PTFE or RPTFE.

g. Stem: Brass.


i. Port: Full.

j. O-Ring Seal: Buna-N or EPDM.

2.3 BRONZE BALL VALVES

A. Bronze Ball Valves, One-Piece with Bronze Trim:

1. Description:



c. Body Design: One piece.

d. Body Material: Bronze.

e. Ends: Threaded.

f. Seats: PTFE.




g. Stem: Bronze.


i. Port: Reduced.

B. Bronze Ball Valves, Two-Piece with Full Port and Bronze or Brass Trim, Threaded Ends:

1. Description:


b. SWP Rating: 150 psig (1035 kPa).

c. CWP Rating: 600 psig (4140 kPa).

d. Body Design: Two piece.

e. Body Material: Bronze.

f. Ends: Threaded.

g. Seats: PTFE.

h. Stem: Bronze.

i. Ball: Chrome-plated brass.

j. Port: Full.

PART 3 - EXECUTION








A. If valves with specified SWP classes or CWP ratings are unavailable, the same types of valves

with higher SWP classes or CWP ratings may be substituted.

B. Select valves with the following end connections:



A. Pipe NPS 2 (DN 50) and Smaller: Brass or bronze ball valves, one piece, with brass trim, and

full port.



CHECK VALVES FOR HVAC PIPING 230523.14 - 1


SECTION 230523.14 - CHECK VALVES FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Bronze lift check valves.

2. Bronze swing check valves.

3. Iron swing check valves.



PART 2 - PRODUCTS



manufacturer.

B. ASME Compliance:


2. ASME B16.1 for flanges on iron valves.


4. ASME B16.18 for solder joint.



C. Bronze valves shall be made with dezincification-resistant materials. Bronze valves made with

copper alloy (brass) containing more than 15 percent zinc are not permitted.

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


E. Valve Sizes: Same as upstream piping unless otherwise indicated.

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




2.2 BRONZE SWING CHECK VALVES

A. Bronze Swing Check Valves with Bronze Disc, Class 125:

1. Description:



c. Body Design: Horizontal flow.

d. Body Material: ASTM B 62, bronze.

e. Ends: Threaded.

f. Disc: Bronze.

B. Bronze Swing Check Valves with Nonmetallic Disc, Class 125:

1. Description:



c. Body Design: Horizontal flow.

d. Body Material: ASTM B 62, bronze.

e. Ends: Threaded.

f. Disc: PTFE.

2.3 IRON SWING CHECK VALVES

A. Iron Swing Check Valves with Metal Seats, Class 125:

1. Description:


b. NPS 2-1/2 to NPS 12 (DN 65 to DN 300), CWP Rating: 200 psig (1380 kPa).

c. Body Design: Clear or full waterway.

d. Body Material: ASTM A 126, gray iron with bolted bonnet.

e. Ends: Flanged.

f. Trim: Bronze.

g. Gasket: Asbestos free.

B. Iron Swing Check Valves with Nonmetallic-to-Metal Seats, Class 125:

1. Description:





e. Ends: Flanged.

f. Trim: Composition.

g. Seat Ring: Bronze.

h. Disc Holder: Bronze.

i. Disc: PTFE.

j. Gasket: Asbestos free.




2.4 IRON SWING CHECK VALVES WITH CLOSURE CONTROL

A. Iron Swing Check Valves with Lever- and Spring-Closure Control, Class 125:

1. Description:





e. Ends: Flanged.

f. Trim: Bronze.


h. Closure Control: Factory-installed, exterior lever and spring.

B. Iron Swing Check Valves with Lever and Weight-Closure Control, Class 125:

1. Description:





e. Ends: Flanged.

f. Trim: Bronze.


h. Closure Control: Factory-installed, exterior lever and weight.

PART 3 - EXECUTION







E. Install swing check valves for proper direction of flow in horizontal position with hinge pin

level.

3.2 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.





A. If valve applications are not indicated, use the following:

1. Pump-Discharge Check Valves:

a. NPS 2 (DN 50) and Smaller: Bronze swing check valves with bronze or

nonmetallic disc.

b. NPS 2-1/2 (DN 65) and Larger: Iron swing check valves with lever and weight or

with spring; metal or resilient-seat check valves.

B. If valves with specified SWP classes or CWP ratings are unavailable, the same types of valves

with higher SWP classes or CWP ratings may be substituted.

C. Select valves, except wafer types, with the following end connections:


2. For Steel Piping, NPS 2-1/2 to NPS 4 (DN 65 to DN 100): Flanged ends except where

threaded valve-end option is indicated in valve schedules.


A. Pipe NPS 2 (DN 50) and Smaller:

1. Bronze Valves: May be provided with solder-joint ends instead of threaded ends.

2. Bronze swing check valves with nonmetallic disc, Class 125.

B. Pipe NPS 2-1/2 (DN 65) and Larger:

1. Iron Valves, NPS 2-1/2 to NPS 4 (DN 65 to DN 100): May be provided with threaded

ends instead of flanged ends.

2. NPS 2-1/2 to NPS 12 (DN 65 to DN 300): Iron swing check valves with lever and

weight-closure control, Class 125.

3. Iron swing check valves with metal seats, Class 125.



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. Heat exchangers.

2. Heating, hot-water pumps.

3. Expansion/compression tanks.

4. Air separators.

B. Related Sections:

1. Section 230719 "HVAC Piping Insulation."


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

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Detail application of protective shields, saddles, and inserts at hangers for each type of

insulation and hanger.

2. Detail attachment and covering of heat tracing inside insulation.

3. Detail removable insulation at equipment connections.

4. Detail application of field-applied jackets.

5. Detail application at linkages of control devices.

6. Detail field application for each equipment type.


A. Field quality-control reports.


A. Surface-Burning Characteristics: For insulation and related materials, as determined by testing

identical products according to ASTM E 84, by a testing agency acceptable to authorities

having jurisdiction. Factory label insulation and jacket materials and adhesive, mastic, tapes,

and cement material containers, with appropriate markings of applicable testing agency.

1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed

index of 50 or less.

2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed





PART 2 - PRODUCTS

2.1 INSULATION MATERIALS

A. Products shall not contain asbestos, lead, mercury, or mercury compounds.

B. Products that come in contact with stainless steel shall have a leachable chloride content of less

than 50 ppm when tested according to ASTM C 871.

C. Insulation materials for use on austenitic stainless steel shall be qualified as acceptable

according to ASTM C 795.

D. Foam insulation materials shall not use CFC or HCFC blowing agents in the manufacturing

process.

E. Cellular Glass: Inorganic, incombustible, foamed or cellulated glass with annealed, rigid,

hermetically sealed cells. Factory-applied jacket requirements are specified in "Factory-Applied

Jackets" Article.

1. Block Insulation: ASTM C 552, Type I.

2. Special-Shaped Insulation: ASTM C 552, Type III.

3. Board Insulation: ASTM C 552, Type IV.

4. Factory fabricate shapes according to ASTM C 450 and ASTM C 585.

F. Flexible Elastomeric Insulation: Closed-cell, sponge- or expanded-rubber materials. Comply

with ASTM C 534, Type I for tubular materials and Type II for sheet materials.

G. Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin.

Comply with ASTM C 553, Type II and ASTM C 1290, Type II with factory-applied vinyl

jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

H. High-Temperature, Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a

thermosetting resin. Comply with ASTM C 553, Type V, without factory-applied jacket.

I. Polyolefin: Unicellular, polyethylene thermal plastic insulation. Comply with ASTM C 534 or

ASTM C 1427, Type I, Grade 1 for tubular materials and Type II, Grade 1 for sheet materials.

2.2 INSULATING CEMENTS

A. Mineral-Fiber, Hydraulic-Setting Insulating and Finishing Cement: Comply with ASTM C 449.

2.3 ADHESIVES

A. Materials shall be compatible with insulation materials, jackets, and substrates and for bonding

insulation to itself and to surfaces to be insulated unless otherwise indicated.

B. PVC Jacket Adhesive: Compatible with PVC jacket.




2.4 MASTICS

A. Materials shall be compatible with insulation materials, jackets, and substrates; comply with

MIL-PRF-19565C, Type II.

B. Vapor-Barrier Mastic: Water based; suitable for indoor and outdoor use on below ambient

services.

1. Water-Vapor Permeance: ASTM E 96/E 96M, Procedure B, 0.013 perm (0.009 metric

perm) at 43-mil (1.09-mm) dry film thickness.

2. Service Temperature Range: Minus 20 to plus 180 deg F (Minus 29 to plus 82 deg C).

3. Solids Content: ASTM D 1644, 58 percent by volume and 70 percent by weight.

4. Color: White.

C. Breather Mastic: Water based; suitable for indoor and outdoor use on above ambient services.

1. Water-Vapor Permeance: ASTM F 1249, 1.8 perms (1.2 metric perms) at 0.0625-inch

(1.6-mm) dry film thickness.


3. Solids Content: 60 percent by volume and 66 percent by weight.

4. Color: White.

2.5 SEALANTS

A. Joint Sealants:

1. Materials shall be compatible with insulation materials, jackets, and substrates.

2. Permanently flexible, elastomeric sealant.


4. Color: White or gray.

2.6 FIELD-APPLIED FABRIC-REINFORCING MESH

A. Woven Polyester Fabric: Approximately 1 oz./sq. yd. (34 g/sq. m) with a thread count of 10

strands by 10 strands/sq. in. (4 strands by 4 strands/sq. mm), in a Leno weave, for equipment.

2.7 FIELD-APPLIED JACKETS

A. PVC Jacket: High-impact-resistant, UV-resistant PVC complying with ASTM D 1784,

Class 16354-C; thickness as scheduled; roll stock ready for shop or field cutting and forming.

Thickness is indicated in field-applied jacket schedules.

1. Adhesive: As recommended by jacket material manufacturer.

2. Color: Color-code jackets based on system. Color as selected by Architect.

3. Factory-fabricated tank heads and tank side panels.

2.8 TAPES

A. PVC Tape: White vapor-retarder tape matching field-applied PVC jacket with acrylic adhesive;

suitable for indoor and outdoor applications.

1. Width: 2 inches (50 mm).




2. Thickness: 6 mils (0.15 mm).

3. Adhesion: 64 ounces force/inch (0.7 N/mm) in width.

4. Elongation: 500 percent.

5. Tensile Strength: 18 lbf/inch (3.3 N/mm) in width.

2.9 SECUREMENTS

A. Insulation Pins and Hangers:

1. Metal, Adhesively Attached, Perforated-Base Insulation Hangers: Baseplate welded to

projecting spindle that is capable of holding insulation, of thickness indicated, securely in

position indicated when self-locking washer is in place.

a. Baseplate: Perforated, galvanized carbon-steel sheet, 0.030 inch (0.76 mm) thick

by 2 inches (50 mm) square.

b. Spindle: Copper- or zinc-coated, low-carbon steel, fully annealed, 0.106-inch-

(2.6-mm-) diameter shank, length to suit depth of insulation indicated.

c. Adhesive: Recommended by hanger manufacturer. Product with demonstrated

capability to bond insulation hanger securely to substrates indicated without

damaging insulation, hangers, and substrates.

B. Staples: Outward-clinching insulation staples, nominal 3/4-inch- (19-mm-) wide, stainless steel

or Monel.

C. Wire: 0.062-inch (1.6-mm) soft-annealed, galvanized steel.

2.10 CORNER ANGLES

A. PVC Corner Angles: 30 mils (0.8 mm) thick, minimum 1 by 1 inch (25 by 25 mm), PVC

according to ASTM D 1784, Class 16354-C. White or color-coded to match adjacent surface.

PART 3 - EXECUTION

3.1 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will

adversely affect insulation application.

B. Coordinate insulation installation with the trade installing heat tracing. Comply with

requirements for heat tracing that apply to insulation.

C. Mix insulating cements with clean potable water; if insulating cements are to be in contact with

stainless-steel surfaces, use demineralized water.




3.2 GENERAL INSTALLATION REQUIREMENTS

A. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces;

free of voids throughout the length of equipment.

B. Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required

for each item of equipment as specified in insulation system schedules.

C. Install accessories compatible with insulation materials and suitable for the service. Install

accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or

dry state.

D. Install insulation with longitudinal seams at top and bottom of horizontal runs.

E. Install multiple layers of insulation with longitudinal and end seams staggered.

F. Keep insulation materials dry during application and finishing.

G. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with

adhesive recommended by insulation material manufacturer.

H. Install insulation with least number of joints practical.

I. Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers,

supports, anchors, and other projections with vapor-barrier mastic.

1. Install insulation continuously through hangers and around anchor attachments.

2. For insulation application where vapor barriers are indicated, extend insulation on anchor

legs from point of attachment to supported item to point of attachment to structure. Taper

and seal ends at attachment to structure with vapor-barrier mastic.

3. Install insert materials and install insulation to tightly join the insert. Seal insulation to

insulation inserts with adhesive or sealing compound recommended by insulation

material manufacturer.

4. Cover inserts with jacket material matching adjacent insulation. Install shields over

jacket, arranged to protect jacket from tear or puncture by hanger, support, and shield.

J. Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet

and dry film thicknesses.

K. Install insulation with factory-applied jackets as follows:

1. Draw jacket tight and smooth.

2. Cover circumferential joints with 3-inch- (75-mm-) wide strips, of same material as

insulation jacket. Secure strips with adhesive and outward clinching staples along both

edges of strip, spaced 4 inches (100 mm) o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches (38 mm). Clean and dry surface to

receive self-sealing lap. Staple laps with outward clinching staples along edge at 2 inches

(50 mm) o.c.

a. For below ambient services, apply vapor-barrier mastic over staples.




4. Cover joints and seams with tape, according to insulation material manufacturer's written

instructions, to maintain vapor seal.

5. Where vapor barriers are indicated, apply vapor-barrier mastic on seams and joints.

L. Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal

thickness.

M. Finish installation with systems at operating conditions. Repair joint separations and cracking

due to thermal movement.

N. Repair damaged insulation facings by applying same facing material over damaged areas.

Extend patches at least 4 inches (100 mm) beyond damaged areas. Adhere, staple, and seal

patches similar to butt joints.

O. For above ambient services, do not install insulation to the following:

1. Vibration-control devices.

2. Testing agency labels and stamps.

3. Nameplates and data plates.

4. Manholes.

5. Handholes.

6. Cleanouts.

3.3 INSTALLATION OF EQUIPMENT, TANK, AND VESSEL INSULATION

A. Mineral-Fiber, Pipe and Tank Insulation Installation for Tanks and Vessels: Secure insulation

with adhesive and anchor pins and speed washers.

1. Apply adhesives according to manufacturer's recommended coverage rates per unit area,

for 100 percent coverage of tank and vessel surfaces.

2. Groove and score insulation materials to fit as closely as possible to equipment, including

contours. Bevel insulation edges for cylindrical surfaces for tight joints. Stagger end

joints.

3. Protect exposed corners with secured corner angles.

4. Install adhesively attached or self-sticking insulation hangers and speed washers on sides

of tanks and vessels as follows:

a. Do not weld anchor pins to ASME-labeled pressure vessels.

b. Select insulation hangers and adhesive that are compatible with service

temperature and with substrate.

c. On tanks and vessels, maximum anchor-pin spacing is 3 inches (75 mm) from

insulation end joints, and 16 inches (400 mm) o.c. in both directions.

d. Do not overcompress insulation during installation.

e. Cut and miter insulation segments to fit curved sides and domed heads of tanks

and vessels.

f. Impale insulation over anchor pins and attach speed washers.

g. Cut excess portion of pins extending beyond speed washers or bend parallel with

insulation surface. Cover exposed pins and washers with tape matching insulation

facing.




5. Secure each layer of insulation with stainless-steel or aluminum bands. Select band

material compatible with insulation materials.

6. Where insulation hangers on equipment and vessels are not permitted or practical and

where insulation support rings are not provided, install a girdle network for securing

insulation. Stretch prestressed aircraft cable around the diameter of vessel and make taut

with clamps, turnbuckles, or breather springs. Place one circumferential girdle around

equipment approximately 6 inches (150 mm) from each end. Install wire or cable

between two circumferential girdles 12 inches (300 mm) o.c. Install a wire ring around

each end and around outer periphery of center openings, and stretch prestressed aircraft

cable radially from the wire ring to nearest circumferential girdle. Install additional

circumferential girdles along the body of equipment or tank at a minimum spacing of 48

inches (1200 mm) o.c. Use this network for securing insulation with tie wire or bands.

7. Stagger joints between insulation layers at least 3 inches (75 mm).

8. Install insulation in removable segments on equipment access doors, manholes,

handholes, and other elements that require frequent removal for service and inspection.

9. Bevel and seal insulation ends around manholes, handholes, ASME stamps, and

nameplates.

10. For equipment with surface temperatures below ambient, apply mastic to open ends,

joints, seams, breaks, and punctures in insulation.

B. Flexible Elastomeric Thermal Insulation Installation for Tanks and Vessels: Install insulation

over entire surface of tanks and vessels.

1. Apply 100 percent coverage of adhesive to surface with manufacturer's recommended

adhesive.

2. Seal longitudinal seams and end joints.

C. Insulation Installation on Pumps:

1. Fabricate metal boxes lined with insulation. Fit boxes around pumps and coincide box

joints with splits in pump casings. Fabricate joints with outward bolted flanges. Bolt

flanges on 6-inch (150-mm) centers, starting at corners. Install 3/8-inch- (10-mm-)

diameter fasteners with wing nuts. Alternatively, secure the box sections together using a

latching mechanism.

2. Fabricate boxes from galvanized steel, at least 0.060 inch (1.6 mm) thick.

3. For below ambient services, install a vapor barrier at seams, joints, and penetrations. Seal

between flanges with replaceable gasket material to form a vapor barrier.

3.4 FIELD-APPLIED JACKET INSTALLATION

A. Where PVC jackets are indicated, install with 1-inch (25-mm) overlap at longitudinal seams and

end joints; for horizontal applications, install with longitudinal seams along top and bottom of

tanks and vessels. Seal with manufacturer's recommended adhesive.

1. Apply two continuous beads of adhesive to seams and joints, one bead under lap and the

finish bead along seam and joint edge.




3.5 FINISHES

A. Color: Final color as selected by Architect. Vary first and second coats to allow visual

inspection of the completed Work.

B. Do not field paint aluminum or stainless-steel jackets.

3.6 FIELD QUALITY CONTROL

A. Perform tests and inspections.

B. Tests and Inspections: Inspect field-insulated equipment, randomly selected by Architect, by

removing field-applied jacket and insulation in layers in reverse order of their installation.

Extent of inspection shall be limited to one location(s) for each type of equipment defined in the

"Equipment Insulation Schedule" Article. For large equipment, remove only a portion adequate

to determine compliance.

C. All insulation applications will be considered defective Work if sample inspection reveals

noncompliance with requirements.

3.7 BREECHING INSULATION SCHEDULE

A. Round, Exposed Breeching and Connector: High-temperature mineral-fiber blanket, 3 inches

(75 mm) thick and 3-lb/cu. ft. (48-kg/cu. m) nominal density.

B. Round, Concealed Breeching and Connector Insulation: High-temperature mineral-fiber

blanket, 3 inches (75 mm) thick and 3-lb/cu. ft. (48-kg/cu. m) nominal density.

3.8 EQUIPMENT INSULATION SCHEDULE

A. Insulation materials and thicknesses are identified below. If more than one material is listed for

a type of equipment, selection from materials listed is Contractor's option.

B. Insulate indoor and outdoor equipment that is not factory insulated.

C. Heat-Exchanger (Water-to-Water for Heating Service) Insulation: Mineral-fiber pipe and tank,

2 inches (50 mm) thick.

D. Heating-Hot-Water Pump Insulation: Mineral-Fiber Board: 2 inches (50 mm) thick and 3-lb/cu.

ft. (48-kg/cu. m) nominal density.

E. Heating-Hot-Water Expansion/Compression Tank Insulation: Mineral-Fiber Pipe and Tank: 1

inch (25 mm) thick.

F. Heating-Hot-Water Air-Separator Insulation: Mineral-Fiber Pipe and Tank: 2 inches (50 mm)

thick.




3.9 INDOOR, FIELD-APPLIED JACKET SCHEDULE

A. Install jacket over insulation material. For insulation with factory-applied jacket, install the

field-applied jacket over the factory-applied jacket.

B. If more than one material is listed, selection from materials listed is Contractor's option.

C. Equipment, Concealed:

1. PVC, Color-Coded by System: 30 mils (0.8 mm) thick.

D. Equipment, Exposed, up to 48 Inches (1200 mm) in Diameter or with Flat Surfaces up to 72

Inches (1800 mm):




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. Heating hot-water piping, indoors.

B. Related Sections:

1. Section 230716 "HVAC Equipment Insulation."


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

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Detail application of protective shields, saddles, and inserts at hangers for each type of

insulation and hanger.

2. Detail attachment and covering of heat tracing inside insulation.

3. Detail insulation application at pipe expansion joints for each type of insulation.

4. Detail insulation application at elbows, fittings, flanges, valves, and specialties for each

type of insulation.

5. Detail removable insulation at piping specialties.

6. Detail application of field-applied jackets.

7. Detail application at linkages of control devices.




A. Surface-Burning Characteristics: For insulation and related materials, as determined by testing

identical products according to ASTM E 84, by a testing and inspecting agency acceptable to

authorities having jurisdiction. Factory label insulation and jacket materials and adhesive,

mastic, tapes, and cement material containers, with appropriate markings of applicable testing

agency.

1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed


2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed





PART 2 - PRODUCTS

2.1 INSULATION MATERIALS

A. Products shall not contain asbestos, lead, mercury, or mercury compounds.

B. Products that come in contact with stainless steel shall have a leachable chloride content of less

than 50 ppm when tested according to ASTM C 871.

C. Insulation materials for use on austenitic stainless steel shall be qualified as acceptable

according to ASTM C 795.

D. Foam insulation materials shall not use CFC or HCFC blowing agents in the manufacturing

process.

E. Cellular Glass: Inorganic, incombustible, foamed or cellulated glass with annealed, rigid,

hermetically sealed cells. Factory-applied jacket requirements are specified in "Factory-Applied

Jackets" Article.

1. Block Insulation: ASTM C 552, Type I.

2. Special-Shaped Insulation: ASTM C 552, Type III.

3. Board Insulation: ASTM C 552, Type IV.

4. Preformed Pipe Insulation without Jacket: Comply with ASTM C 552, Type II, Class 1.

5. Preformed Pipe Insulation with Factory-Applied ASJ: Comply with ASTM C 552,

Type II, Class 2.

6. Factory fabricate shapes according to ASTM C 450 and ASTM C 585.

F. Flexible Elastomeric Insulation: Closed-cell, sponge- or expanded-rubber materials. Comply

with ASTM C 534, Type I for tubular materials.

G. Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin.

Comply with ASTM C 1290, Type I.

H. Mineral-Fiber, Preformed Pipe Insulation:

1. Type I, 850 deg F (454 deg C) Materials: Mineral or glass fibers bonded with a

thermosetting resin. Comply with ASTM C 547, Type I, Grade A, with factory-applied

ASJ. Factory-applied jacket requirements are specified in "Factory-Applied Jackets"

Article.

2. Type II, 1200 deg F (649 deg C) Materials: Mineral or glass fibers bonded with a

thermosetting resin. Comply with ASTM C 547, Type II, Grade A, with factory-applied

ASJ. Factory-applied jacket requirements are specified in "Factory-Applied Jackets"

Article.

I. Mineral-Fiber, Pipe Insulation Wicking System: Preformed pipe insulation complying with

ASTM C 547, Type I, Grade A, with absorbent cloth factory-applied to the entire inside surface

of preformed pipe insulation and extended through the longitudinal joint to outside surface of

insulation under insulation jacket. Factory apply a white, polymer, vapor-retarder jacket with

self-sealing adhesive tape seam and evaporation holes running continuously along the

longitudinal seam, exposing the absorbent cloth.




2.2 INSULATING CEMENTS

A. Mineral-Fiber, Hydraulic-Setting Insulating and Finishing Cement: Comply with ASTM C 449.

2.3 ADHESIVES

A. Materials shall be compatible with insulation materials, jackets, and substrates and for bonding

insulation to itself and to surfaces to be insulated unless otherwise indicated.

B. Cellular-Glass Adhesive: Two-component, thermosetting urethane adhesive containing no

flammable solvents, with a service temperature range of minus 100 to plus 200 deg F (minus 73

to plus 93 deg C).

C. PVC Jacket Adhesive: Compatible with PVC jacket.

2.4 MASTICS

A. Materials shall be compatible with insulation materials, jackets, and substrates; comply with

MIL-PRF-19565C, Type II.

B. Vapor-Barrier Mastic: Water based; suitable for indoor use on below-ambient services.

1. Water-Vapor Permeance: ASTM E 96/E 96M, Procedure B, 0.013 perm (0.009 metric

perm) at 43-mil (1.09-mm) dry film thickness.


3. Solids Content: ASTM D 1644, 58 percent by volume and 70 percent by weight.

4. Color: White.

C. Breather Mastic: Water based; suitable for indoor and outdoor use on above-ambient services.

1. Water-Vapor Permeance: ASTM F 1249, 1.8 perms (1.2 metric perms) at 0.0625-inch

(1.6-mm) dry film thickness.


3. Solids Content: 60 percent by volume and 66 percent by weight.

4. Color: White.

2.5 SEALANTS

A. Joint Sealants:


2. Permanently flexible, elastomeric sealant.


4. Color: White or gray.

B. ASJ Flashing Sealants, and Vinyl, PVDC, and PVC Jacket Flashing Sealants:


2. Fire- and water-resistant, flexible, elastomeric sealant.


4. Color: White.




2.6 FACTORY-APPLIED JACKETS

A. Insulation system schedules indicate factory-applied jackets on various applications. When

factory-applied jackets are indicated, comply with the following:

1. PVDC Jacket for Indoor Applications: 4-mil- (0.10-mm-) thick, white PVDC biaxially

oriented barrier film with a permeance at 0.02 perm (0.013 metric perm) when tested

according to ASTM E 96/E 96M and with a flame-spread index of 5 and a smoke-

developed index of 20 when tested according to ASTM E 84.

2. PVDC Jacket for Outdoor Applications: 6-mil- (0.15-mm-) thick, white PVDC biaxially

oriented barrier film with a permeance at 0.01 perm (0.007 metric perm) when tested

according to ASTM E 96/E 96M and with a flame-spread index of 5 and a smoke-

developed index of 25 when tested according to ASTM E 84.

3. PVDC-SSL Jacket: PVDC jacket with a self-sealing, pressure-sensitive, acrylic-based

adhesive covered by a removable protective strip.

4. Vinyl Jacket: White vinyl with a permeance of 1.3 perms (0.86 metric perms) when

tested according to ASTM E 96/E 96M, Procedure A, and complying with NFPA 90A

and NFPA 90B.

2.7 FIELD-APPLIED FABRIC-REINFORCING MESH

A. Woven Polyester Fabric: Approximately 1 oz./sq. yd. (34 g/sq. m) with a thread count of 10

strands by 10 strands/sq. in. (4 strands by 4 strands/sq. mm), in a Leno weave, for pipe.

2.8 FIELD-APPLIED JACKETS

A. Field-applied jackets shall comply with ASTM C 921, Type I, unless otherwise indicated.

B. PVC Jacket: High-impact-resistant, UV-resistant PVC complying with ASTM D 1784,

Class 16354-C; thickness as scheduled; roll stock ready for shop or field cutting and forming.

Thickness is indicated in field-applied jacket schedules.

1. Adhesive: As recommended by jacket material manufacturer.

2. Color: Color-code jackets based on system. Color as selected by Architect.

3. Factory-fabricated fitting covers to match jacket if available; otherwise, field fabricate.

a. Shapes: 45- and 90-degree, short- and long-radius elbows, tees, valves, flanges,

unions, reducers, end caps, soil-pipe hubs, traps, mechanical joints, and P-trap and

supply covers for lavatories.

2.9 TAPES

A. PVC Tape: White vapor-retarder tape matching field-applied PVC jacket with acrylic adhesive;

suitable for indoor and outdoor applications.

1. Width: 2 inches (50 mm).

2. Thickness: 6 mils (0.15 mm).

3. Adhesion: 64 ounces force/inch (0.7 N/mm) in width.




4. Elongation: 500 percent.

5. Tensile Strength: 18 lbf/inch (3.3 N/mm) in width.

2.10 SECUREMENTS

A. Staples: Outward-clinching insulation staples, nominal 3/4-inch- (19-mm-) wide, stainless steel

or Monel.

B. Wire: 0.062-inch (1.6-mm) soft-annealed, stainless steel.

PART 3 - EXECUTION

3.1 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will

adversely affect insulation application.

B. Coordinate insulation installation with the trade installing heat tracing. Comply with

requirements for heat tracing that apply to insulation.

C. Mix insulating cements with clean potable water; if insulating cements are to be in contact with

stainless-steel surfaces, use demineralized water.

3.2 GENERAL INSTALLATION REQUIREMENTS

A. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces;

free of voids throughout the length of piping including fittings, valves, and specialties.

B. Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required

for each item of pipe system as specified in insulation system schedules.

C. Install accessories compatible with insulation materials and suitable for the service. Install

accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or

dry state.

D. Install insulation with longitudinal seams at top and bottom of horizontal runs.

E. Install 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. Keep insulation materials dry during application and finishing.

H. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with

adhesive recommended by insulation material manufacturer.

I. Install insulation with least number of joints practical.




J. Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers,

supports, anchors, and other projections with vapor-barrier mastic.

1. Install insulation continuously through hangers and around anchor attachments.

2. For insulation application where vapor barriers are indicated, extend insulation on anchor

legs from point of attachment to supported item to point of attachment to structure. Taper

and seal ends at attachment to structure with vapor-barrier mastic.

3. Install insert materials and install insulation to tightly join the insert. Seal insulation to

insulation inserts with adhesive or sealing compound recommended by insulation

material manufacturer.

4. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over

jacket, arranged to protect jacket from tear or puncture by hanger, support, and shield.

K. Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet

and dry film thicknesses.

L. Install insulation with factory-applied jackets as follows:

1. Draw jacket tight and smooth.

2. Cover circumferential joints with 3-inch- (75-mm-) wide strips, of same material as

insulation jacket. Secure strips with adhesive and outward clinching staples along both

edges of strip, spaced 4 inches (100 mm) o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches (38 mm). Install 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 o.c.

a. For below-ambient services, apply vapor-barrier mastic over staples.

4. Cover joints and seams with tape, according to insulation material manufacturer's written

instructions, to maintain vapor seal.

5. Where vapor barriers are indicated, apply vapor-barrier mastic on seams and joints and at

ends adjacent to pipe flanges and fittings.

M. Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal

thickness.

N. Finish installation with systems at operating conditions. Repair joint separations and cracking

due to thermal movement.

O. Repair damaged insulation facings by applying same facing material over damaged areas.

Extend patches at least 4 inches (100 mm) beyond damaged areas. Adhere, staple, and seal

patches similar to butt joints.

P. For above-ambient services, do not install insulation to the following:

1. Vibration-control devices.

2. Testing agency labels and stamps.

3. Nameplates and data plates.

4. Manholes.

5. Handholes.

6. Cleanouts.




3.3 PENETRATIONS

A. Insulation Installation at Roof Penetrations: Install insulation continuously through roof

penetrations.

1. Seal penetrations with flashing sealant.

2. For applications requiring only indoor insulation, terminate insulation above roof surface

and seal with joint sealant. For applications requiring indoor and outdoor insulation,

install insulation for outdoor applications tightly joined to indoor insulation ends. Seal

joint with joint sealant.

3. Extend jacket of outdoor insulation outside roof flashing at least 2 inches (50 mm) below

top of roof flashing.

4. Seal jacket to roof flashing with flashing sealant.

B. Insulation Installation at Underground Exterior Wall Penetrations: Terminate insulation flush

with sleeve seal. Seal terminations with flashing sealant.

C. Insulation Installation at Aboveground Exterior Wall Penetrations: Install insulation

continuously through wall penetrations.

1. Seal penetrations with flashing sealant.

2. For applications requiring only indoor insulation, terminate insulation inside wall surface

and seal with joint sealant. For applications requiring indoor and outdoor insulation,

install insulation for outdoor applications tightly joined to indoor insulation ends. Seal

joint with joint sealant.

3. Extend jacket of outdoor insulation outside wall flashing and overlap wall flashing at

least 2 inches (50 mm).

4. Seal jacket to wall flashing with flashing sealant.

D. Insulation Installation at Interior Wall and Partition Penetrations (That Are Not Fire Rated):

Install insulation continuously through walls and partitions.

E. Insulation Installation at Fire-Rated Wall and Partition Penetrations: Install insulation

continuously through penetrations of fire-rated walls and partitions.

1. Comply with requirements in Section 078413 "Penetration Firestopping" for firestopping

and fire-resistive joint sealers.

F. Insulation Installation at Floor Penetrations:

1. Pipe: Install insulation continuously through floor penetrations.

2. Seal penetrations through fire-rated assemblies. Comply with requirements in

Section 078413 "Penetration Firestopping."

3.4 GENERAL PIPE INSULATION INSTALLATION

A. Requirements in this article generally apply to all insulation materials except where more

specific requirements are specified in various pipe insulation material installation articles.

B. Insulation Installation on Fittings, Valves, Strainers, Flanges, and Unions:




1. Install insulation over fittings, valves, strainers, flanges, unions, and other specialties with

continuous thermal and vapor-retarder integrity unless otherwise indicated.

2. Insulate pipe elbows using preformed fitting insulation or mitered fittings made from

same material and density as adjacent pipe insulation. Each piece shall be butted tightly

against adjoining piece and bonded with adhesive. Fill joints, seams, voids, and irregular

surfaces with insulating cement finished to a smooth, hard, and uniform contour that is

uniform with adjoining pipe insulation.

3. Insulate tee fittings with preformed fitting insulation or sectional pipe insulation of same

material and thickness as used for adjacent pipe. Cut sectional pipe insulation to fit. Butt

each section closely to the next and hold in place with tie wire. Bond pieces with

adhesive.

4. Insulate valves using preformed fitting insulation or sectional pipe insulation of same

material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe

insulation by not less than two times the thickness of pipe insulation, or one pipe

diameter, whichever is thicker. For valves, insulate up to and including the bonnets, valve

stuffing-box studs, bolts, and nuts. Fill joints, seams, and irregular surfaces with

insulating cement.

5. Insulate strainers using preformed fitting insulation or sectional pipe insulation of same

material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe

insulation by not less than two times the thickness of pipe insulation, or one pipe

diameter, whichever is thicker. Fill joints, seams, and irregular surfaces with insulating

cement. Insulate strainers so strainer basket flange or plug can be easily removed and

replaced without damaging the insulation and jacket. Provide a removable reusable

insulation cover. For below-ambient services, provide a design that maintains vapor

barrier.

6. Insulate flanges and unions using a section of oversized preformed pipe insulation.

Overlap adjoining pipe insulation by not less than two times the thickness of pipe

insulation, or one pipe diameter, whichever is thicker.

7. Cover segmented insulated surfaces with a layer of finishing cement and coat with a

mastic. Install vapor-barrier mastic for below-ambient services and a breather mastic for

above-ambient services. Reinforce the mastic with fabric-reinforcing mesh. Trowel the

mastic to a smooth and well-shaped contour.

8. For services not specified to receive a field-applied jacket except for flexible elastomeric

and polyolefin, install fitted PVC cover over elbows, tees, strainers, valves, flanges, and

unions. Terminate ends with PVC end caps. Tape PVC covers to adjoining insulation

facing using PVC tape.

9. Stencil or label the outside insulation jacket of each union with the word "union." Match

size and color of pipe labels.

C. Insulate instrument connections for thermometers, pressure gages, pressure temperature taps,

test connections, flow meters, sensors, switches, and transmitters on insulated pipes. Shape

insulation at these connections by tapering it to and around the connection with insulating

cement and finish with finishing cement, mastic, and flashing sealant.

D. Install removable insulation covers at locations indicated. Installation shall conform to the

following:

1. Make removable flange and union insulation from sectional pipe insulation of same

thickness as that on adjoining pipe. Install same insulation jacket as adjoining pipe

insulation.




2. When flange and union covers are made from sectional pipe insulation, extend insulation

from flanges or union long at least two times the insulation thickness over adjacent pipe

insulation on each side of flange or union. Secure flange cover in place with stainless-

steel or aluminum bands. Select band material compatible with insulation and jacket.

3. Construct removable valve insulation covers in same manner as for flanges, except divide

the two-part section on the vertical center line of valve body.

4. When covers are made from block insulation, make two halves, each consisting of

mitered blocks wired to stainless-steel fabric. Secure this wire frame, with its attached

insulation, to flanges with tie wire. Extend insulation at least 2 inches (50 mm) over

adjacent pipe insulation on each side of valve. Fill space between flange or union cover

and pipe insulation with insulating cement. Finish cover assembly with insulating cement

applied in two coats. After first coat is dry, apply and trowel second coat to a smooth

finish.

5. Unless a PVC jacket is indicated in field-applied jacket schedules, finish exposed

surfaces with a metal jacket.

3.5 INSTALLATION OF CELLULAR-GLASS INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of insulation to pipe with wire or bands and tighten bands without

deforming insulation materials.

2. Where vapor barriers are indicated, seal longitudinal seams, end joints, and protrusions

with vapor-barrier mastic and joint sealant.

3. For insulation with factory-applied jackets on above-ambient services, secure laps with

outward-clinched staples at 6 inches (150 mm) o.c.

4. For insulation with factory-applied jackets on below-ambient services, do not staple

longitudinal tabs. Instead, secure tabs with additional adhesive as recommended by

insulation material manufacturer and seal with vapor-barrier mastic and flashing sealant.

B. Insulation Installation on Pipe Flanges:

1. Install preformed pipe insulation to outer diameter of pipe flange.

2. Make width of insulation section same as overall width of flange and bolts, plus twice the

thickness of pipe insulation.

3. Fill voids between inner circumference of flange insulation and outer circumference of

adjacent straight pipe segments with cut sections of cellular-glass block insulation of

same thickness as pipe insulation.

4. Install jacket material with manufacturer's recommended adhesive, overlap seams at least

1 inch (25 mm), and seal joints with flashing sealant.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install preformed sections of same material as straight segments of pipe insulation when

available. Secure according to manufacturer's written instructions.

2. When preformed sections of insulation are not available, install mitered sections of

cellular-glass insulation. Secure insulation materials with wire or bands.

D. Insulation Installation on Valves and Pipe Specialties:




1. Install preformed sections of cellular-glass insulation to valve body.

2. Arrange insulation to permit access to packing and to allow valve operation without

disturbing insulation.

3. Install insulation to flanges as specified for flange insulation application.

3.6 INSTALLATION OF FLEXIBLE ELASTOMERIC INSULATION

A. Seal longitudinal seams and end joints with manufacturer's recommended adhesive to eliminate

openings in insulation that allow passage of air to surface being insulated.


1. Install pipe insulation to outer diameter of pipe flange.




adjacent straight pipe segments with cut sections of sheet insulation of same thickness as

pipe insulation.

4. Secure insulation to flanges and seal seams with manufacturer's recommended adhesive

to eliminate openings in insulation that allow passage of air to surface being insulated.


1. Install mitered sections of pipe insulation.

2. Secure insulation materials and seal seams with manufacturer's recommended adhesive to

eliminate openings in insulation that allow passage of air to surface being insulated.


1. Install preformed valve covers manufactured of same material as pipe insulation when

available.

2. When preformed valve covers are not available, install cut sections of pipe and sheet

insulation to valve body. Arrange insulation to permit access to packing and to allow

valve operation without disturbing insulation.


4. Secure insulation to valves and specialties and seal seams with manufacturer's

recommended adhesive to eliminate openings in insulation that allow passage of air to

surface being insulated.

3.7 INSTALLATION OF MINERAL-FIBER PREFORMED PIPE INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of preformed pipe insulation to pipe with wire or bands and tighten

bands without deforming insulation materials.

2. Where vapor barriers are indicated, seal longitudinal seams, end joints, and protrusions

with vapor-barrier mastic and joint sealant.

3. For insulation with factory-applied jackets on above-ambient surfaces, secure laps with

outward-clinched staples at 6 inches (150 mm) o.c.




4. For insulation with factory-applied jackets on below-ambient surfaces, do not staple

longitudinal tabs. Instead, secure tabs with additional adhesive as recommended by

insulation material manufacturer and seal with vapor-barrier mastic and flashing sealant.


1. Install preformed pipe insulation to outer diameter of pipe flange.




adjacent straight pipe segments with mineral-fiber blanket insulation.

4. Install jacket material with manufacturer's recommended adhesive, overlap seams at least

1 inch (25 mm), and seal joints with flashing sealant.



available.

2. When preformed insulation elbows and fittings are not available, install mitered sections

of pipe insulation, to a thickness equal to adjoining pipe insulation. Secure insulation

materials with wire or bands.



available.

2. When preformed sections are not available, install mitered sections of pipe insulation to

valve body.

3. Arrange insulation to permit access to packing and to allow valve operation without

disturbing insulation.


3.8 FIELD-APPLIED JACKET INSTALLATION

A. Where PVC jackets are indicated, install with 1-inch (25-mm) overlap at longitudinal seams and

end joints; for horizontal applications. Seal with manufacturer's recommended adhesive.

1. Apply two continuous beads of adhesive to seams and joints, one bead under lap and the

finish bead along seam and joint edge.

3.9 FINISHES

A. Flexible Elastomeric Thermal Insulation: After adhesive has fully cured, apply two coats of

insulation manufacturer's recommended protective coating.

B. Color: Final color as selected by Architect. Vary first and second coats to allow visual

inspection of the completed Work.

C. Do not field paint aluminum or stainless-steel jackets.





A. Perform tests and inspections.

B. Tests and Inspections:

1. Inspect pipe, fittings, strainers, and valves, randomly selected by Architect, by removing

field-applied jacket and insulation in layers in reverse order of their installation. Extent of

inspection shall be limited to three locations of straight pipe, three locations of threaded

fittings, three locations of welded fittings, two locations of threaded strainers, two

locations of welded strainers, three locations of threaded valves, and three locations of

flanged valves for each pipe service defined in the "Piping Insulation Schedule, General"

Article.

C. All insulation applications will be considered defective Work if sample inspection reveals

noncompliance with requirements.

3.11 PIPING INSULATION SCHEDULE, GENERAL

A. Acceptable preformed pipe and tubular insulation materials and thicknesses are identified for

each piping system and pipe size range. If more than one material is listed for a piping system,

selection from materials listed is Contractor's option.

B. Items Not Insulated: Unless otherwise indicated, do not install insulation on the following:

1. Drainage piping located in crawl spaces.

2. Underground piping.

3. Chrome-plated pipes and fittings unless there is a potential for personnel injury.

3.12 INDOOR PIPING INSULATION SCHEDULE

A. Heating-Hot-Water Supply and Return, 200 Deg F (93 Deg C) and Below: Insulation shall be

the following:

1. Cellular Glass: 1-1/2 inches (38 mm) thick.

2. Mineral-Fiber, Preformed Pipe, Type I: 1 inch (25 mm) thick.

3.13 INDOOR, FIELD-APPLIED JACKET SCHEDULE

A. Install jacket over insulation material. For insulation with factory-applied jacket, install the

field-applied jacket over the factory-applied jacket.

B. If more than one material is listed, selection from materials listed is Contractor's option.

C. Piping, Concealed:


D. Piping, Exposed:


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:

1. Plastic pipe and fittings.

2. Joining materials.

3. Transition fittings.

4. Bypass chemical feeder.


A. Product Data: For each type of the following:

1. Pipe.

2. Fittings.

3. Joining materials.

4. Bypass chemical feeder.

B. Delegated-Design Submittal:

1. Design calculations and detailed fabrication and assembly of pipe anchors and alignment

guides, hangers and supports for multiple pipes, expansion joints and loops, and

attachments of the same to the building structure.

2. Locations of pipe anchors and alignment guides and expansion joints and loops.

3. Locations of and details for penetrations, including sleeves and sleeve seals for exterior

walls, floors, basement, and foundation walls.

4. Locations of and details for penetration and firestopping for fire- and smoke-rated wall

and floor and ceiling assemblies.




A. ASME Compliance: Comply with ASME B31.9, "Building Services Piping," for materials,

products, and installation.




PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Hydronic piping components and installation shall be capable of withstanding the following

minimum working pressure and temperature unless otherwise indicated:

1. Hot-Water Heating Piping: 100 psig (689 kPa) at 180 deg F (82 deg C).

2. Makeup-Water Piping: 150 psig (1034 kPa) at 73 deg F (22 deg C).

3. Condensate-Drain Piping: 150 deg F (66 deg C).

4. Air-Vent Piping: 180 deg F (82 deg C).

5. Safety-Valve-Inlet and -Outlet Piping: Equal to the pressure of the piping system to

which it is attached.

2.2 STEEL PIPE AND FITTINGS

A. Steel Pipe: ASTM A 53/A 53M, black steel with plain ends; welded and seamless, Grade B, and

wall thickness as indicated in "Piping Applications" Article.

B. Cast-Iron Threaded Fittings: ASME B16.4; Classes 125 and 250 as indicated in "Piping

Applications" Article.

C. Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 and 300 as indicated in "Piping


D. Malleable-Iron Unions: ASME B16.39; Classes 150, 250, and 300 as indicated in "Piping


E. 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 "Piping Applications" Article.

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. Plain-End Mechanical-Joint Couplings:

1. Housing: ASTM A-536 Grade 65-45-12 segmented ductile iron or type 304 stainless

steel.

2. Housing Coating: Heresite VR-514 on exterior.

3. Gasket: Viton.

4. Sealing Mechanism: Double-lip sealing system or carbon steel case-hardened jaws.

5. Bolts, hex nuts, washers, or lock bars based on manufacturer's design.

6. Minimum Pressure Rating: Equal to that of the joined pipes.




2.3 PLASTIC PIPE AND FITTINGS

A. CPVC Plastic Pipe: ASTM F 441/F 441M, with wall thickness as indicated in "Piping


1. CPVC Plastic Pipe Fittings: Socket-type pipe fittings, ASTM F 438 for Schedule 40 pipe;

ASTM F 439 for Schedule 80 pipe.

B. PVC Plastic Pipe: ASTM D 1785, with wall thickness as indicated in "Piping Applications"

Article.

1. PVC Plastic Pipe Fittings: Socket-type pipe fittings, ASTM D 2466 for Schedule 40 pipe;

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 (3.2-mm) maximum thickness

unless otherwise 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. Solvent Cements for CPVC Piping: ASTM F 493.

E. Solvent Cements for PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

2.5 TRANSITION FITTINGS

A. Plastic-to-Metal Transition Fittings:

1. One-piece fitting with one threaded brass or copper insert and one solvent-cement-joint

end of material and wall thickness to match plastic pipe material.

B. Plastic-to-Metal Transition Unions:

1. Brass or copper end, solvent-cement-joint end of material and wall thickness to match

plastic pipe material, rubber gasket, and threaded union.

2.6 DIELECTRIC FITTINGS

A. General Requirements: Assembly of copper alloy and ferrous materials with separating

nonconductive insulating material. Include end connections compatible with pipes to be joined.




B. Dielectric Unions:

1. Description:

a. Standard: ASSE 1079.

b. Pressure Rating: 125 psig (860 kPa) minimum at 180 deg F (82 deg C).

c. End Connections: Solder-joint copper alloy and threaded ferrous.

2.7 BYPASS CHEMICAL FEEDER

A. Description: Welded steel construction; 125-psig (860-kPa) working pressure; 5-gal. (19-L)

capacity; with fill funnel and inlet, outlet, and drain valves.

1. Chemicals: Specially formulated, based on analysis of makeup water, to prevent

accumulation of scale and corrosion in piping and connected equipment.

PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Hot-water heating piping, aboveground, pool loop, shall be the following:

1. Schedule 40 CPVC plastic pipe and fittings and solvent-welded joints.

B. Hot-water heating piping, aboveground, boiler, hot water heater and air handler loops, shall be

the following:

1. Schedule 40 steel pipe, plain-end mechanical-coupled joints (grooved joints not allowed).

All pipe exterior to be coated with Heresite VR-514

C. Makeup-water piping installed aboveground shall be the following:

1. Schedule 40 CPVC plastic pipe and fittings, and solvent-welded joints.

D. Condensate-Drain Piping: Schedule 40 PVC plastic pipe and fittings and solvent-welded joints.

E. Air-Vent Piping:

1. Inlet: Same as service where installed with metal-to-plastic transition fittings for plastic

piping systems according to piping manufacturer's written instructions.

2. Outlet: Type K (Type A), annealed-temper copper tubing with soldered or flared joints.

F. Safety-Valve-Inlet and -Outlet Piping for Hot-Water Piping: Same materials and joining

methods as for piping specified for the service in which safety valve is installed with metal-to-

plastic transition fittings for plastic piping systems according to piping manufacturer's written

instructions.




3.2 PIPING INSTALLATIONS

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

systems. 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 (DN 20) ball valve, and short NPS 3/4

(DN 20) 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 branch connections to mains using mechanically formed tee fittings in main pipe, with

the branch connected to the bottom of the main pipe. For up-feed risers, connect the branch to

the top of the main pipe.

P. Install valves according to the following:

1. Section 230523.11 "Globe Valves for HVAC Piping."

2. Section 230523.12 "Ball Valves for HVAC Piping."

3. Section 230523.13 "Butterfly Valves for HVAC Piping."

4. Section 230523.14 "Check Valves for HVAC Piping."

5. Section 230523.15 "Gate Valves for HVAC Piping."




Q. Install unions in piping, NPS 2 (DN 50) and smaller, adjacent to valves, at final connections of

equipment, and elsewhere as indicated.

R. Install flanges in piping, NPS 2-1/2 (DN 65) and larger, at final connections of equipment and

elsewhere as indicated.

S. Install shutoff valve immediately upstream of each dielectric fitting.

T. Comply with requirements in Section 230516 "Expansion Fittings and Loops for HVAC

Piping" for installation of expansion loops, expansion joints, anchors, and pipe alignment

guides.

U. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment"

for identifying piping.

V. Install sleeves for piping penetrations of walls, ceilings, and floors. Comply with requirements

for sleeves specified in Section 230517 "Sleeves and Sleeve Seals for HVAC Piping."

W. Install sleeve seals for piping penetrations of concrete walls and slabs. Comply with

requirements for sleeve seals specified in Section 230517 "Sleeves and Sleeve Seals for HVAC

Piping."

X. Install escutcheons for piping penetrations of walls, ceilings, and floors. Comply with

requirements for escutcheons specified in Section 230518 "Escutcheons for HVAC Piping."

3.3 HANGERS AND SUPPORTS

A. Comply with requirements in Section 230529 "Hangers and Supports for HVAC Piping and

Equipment" for hanger, support, and anchor devices. Comply with the following requirements

for maximum spacing of supports.

B. Comply with requirements in Section 230548 "Vibration and Seismic Controls for HVAC" for

seismic restraints.

C. Install the following pipe attachments:

1. Adjustable steel clevis hangers for individual horizontal piping less than 20 feet (6 m)

long.

2. Adjustable roller hangers and spring hangers for individual horizontal piping 20 feet

(6 m) or longer.

3. Pipe Roller: MSS SP-58, Type 44 for multiple horizontal piping 20 feet (6 m) 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.

D. Install hangers for steel piping with the following maximum spacing and minimum rod sizes:




1. NPS 3/4 (DN 20): Maximum span, 7 feet (2.1 m).

2. NPS 1 (DN 25): Maximum span, 7 feet (2.1 m).

3. NPS 1-1/2 (DN 40): Maximum span, 9 feet (2.7 m).

4. NPS 2 (DN 50): Maximum span, 10 feet (3 m).

5. NPS 2-1/2 (DN 65): Maximum span, 11 feet (3.4 m).

6. NPS 3 (DN 80) and Larger: Maximum span, 12 feet (3.7 m).

E. Install hangers for drawn-temper copper piping with the following maximum spacing and

minimum rod sizes:

1. NPS 3/4 (DN 20): Maximum span, 5 feet (1.5 m); minimum rod size, 1/4 inch (6.4 mm).

2. NPS 1 (DN 25): Maximum span, 6 feet (1.8 m); minimum rod size, 1/4 inch (6.4 mm).

3. NPS 1-1/4 (DN 32): Maximum span, 7 feet (2.1 m); minimum rod size, 3/8 inch (10

mm).


mm).

5. NPS 2 (DN 50): Maximum span, 8 feet (2.4 m); minimum rod size, 3/8 inch (10 mm).


mm).

7. NPS 3 (DN 80) and Larger: Maximum span, 10 feet (3 m); minimum rod size, 3/8 inch

(10 mm).

F. 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.

G. Support vertical runs at roof, at each floor, and at 10-foot (3-m) intervals between floors.

3.4 PIPE JOINT CONSTRUCTION

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

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

assembly.

C. 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.

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

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

E. 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. CPVC Piping: Join according to ASTM D 2846/D 2846M Appendix.

3. 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.

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

F. Plain-End Mechanical-Coupled Joints: Prepare, assemble, and test joints in accordance with

manufacturer's written installation instructions.

G. Mechanically Formed, Copper-Tube-Outlet Joints: Use manufacturer-recommended tool and

procedure, and brazed joints.

3.5 TERMINAL EQUIPMENT CONNECTIONS

A. Sizes for supply and return piping connections shall be the same as or larger than equipment

connections.

B. Install control valves in accessible locations close to connected equipment.

C. Install bypass piping with globe valve around control valve. If parallel control valves are

installed, only one bypass is required.

D. Install ports for pressure gages and thermometers at coil inlet and outlet connections. Comply

with requirements in Section 230519 "Meters and Gages for HVAC Piping."

3.6 CHEMICAL TREATMENT

A. Fill system with fresh water and add liquid alkaline compound with emulsifying agents and

detergents to remove grease and petroleum products from piping. Circulate solution for a

minimum of 24 hours, drain, clean strainer screens, and refill with fresh water.

B. Add initial chemical treatment and maintain water quality in ranges noted above for the first

year of operation.

C. Fill systems that have antifreeze or glycol solutions with the following concentrations:

1. Hot-Water Heating Piping: Minimum of 30 percent propylene glycol.


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. 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.

5. 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 the "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 boilers, chillers,

cooling towers, to specified values.

7. Verify lubrication of motors and bearings.



HYDRONIC PIPING SPECIALTIES 232116 - 1


SECTION 232116 - HYDRONIC PIPING SPECIALTIES

PART 1 - GENERAL

1.1 SUMMARY


1. Hydronic specialty valves.

2. Air-control devices.

3. Strainers.

4. Connectors.

B. Related Requirements:

1. Section 230516 "Expansion Fittings and Loops for HVAC Piping" for expansion fittings

and loops.

2. Section 230523.11 "Globe Valves for HVAC Piping" for specification and installation

requirements for globe valves common to most piping systems.

3. Section 230523.12 "Ball Valves for HVAC Piping" for specification and installation

requirements for ball valves common to most piping systems.

4. Section 230523.14 "Check Valves for HVAC Piping" for specification and installation

requirements for check valves common to most piping systems.


A. Product Data: For each type of product:

1. Include construction details and material descriptions for hydronic piping specialties.

2. Include rated capacities, operating characteristics, and furnished specialties and

accessories.

3. Include flow and pressure drop curves based on manufacturer's testing for calibrated-

orifice balancing valves and automatic flow-control valves.


A. Operation and maintenance data.


A. Pipe Welding: Qualify procedures and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.




B. 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.

PART 2 - PRODUCTS

2.1 HYDRONIC SPECIALTY VALVES

A. Plastic Ball Valves:

1. Body: One-, two-, or three-piece CPVC or PVC to match piping.

2. Ball: Full-port CPVC or PVC to match piping.

3. Seats: PTFE.

4. Seals: EPDM.

5. End Connections: Socket, union, or flanged.

6. Handle Style: Tee shape.

7. CWP Rating: Equal to piping service.

8. Maximum Operating Temperature: Equal to piping service.

9. Comply with MSS SP-122.

B. Plastic Butterfly Valves:

1. Body: PVC or CPVC to match piping wafer type for installation between flanges.

2. Disc: EPDM-coated steel.

3. Seats: PTFE.

4. Handle Style: Locking lever.



C. Plastic Check Valves:

1. Body: One-, two-, or three-piece PVC or CPVC to match piping.

2. Ends: Socket or flanged.

3. Seats: PTFE.

4. Check Style: Swing or ball type.



D. Bronze, Calibrated-Orifice, Balancing Valves:

1. Body: Bronze, ball or plug type with calibrated orifice or venturi.

2. Ball: Brass or stainless steel.

3. Plug: Resin.

4. Seat: PTFE.

5. End Connections: Threaded or socket.

6. Pressure Gage Connections: Integral seals for portable differential pressure meter.

7. Handle Style: Lever, with memory stop to retain set position.

8. CWP Rating: Minimum 125 psig (860 kPa).

9. Maximum Operating Temperature: 250 deg F (121 deg C).

E. Diaphragm-Operated, Pressure-Reducing Valves: ASME labeled.

1. Body: Bronze or brass.

2. Disc: Glass and carbon-filled PTFE.




3. Seat: Brass.

4. Stem Seals: EPDM O-rings.

5. Diaphragm: EPT.

6. Low inlet-pressure check valve.

7. Inlet Strainer: <Insert materials>, removable without system shutdown.

8. Valve Seat and Stem: Noncorrosive.

9. Valve Size, Capacity, and Operating Pressure: Selected to suit system in which installed,

with operating pressure and capacity factory set and field adjustable.

F. Diaphragm-Operated Safety Valves: ASME labeled.

1. Body: Bronze or brass.

2. Disc: Glass and carbon-filled PTFE.

3. Seat: Brass.

4. Stem Seals: EPDM O-rings.

5. Diaphragm: EPT.

6. Wetted, Internal Work Parts: Brass and rubber.

7. Inlet Strainer: removable without system shutdown.

8. Valve Seat and Stem: Noncorrosive.

9. Valve Size, Capacity, and Operating Pressure: Comply with ASME Boiler and Pressure

Vessel Code: Section IV, and selected to suit system in which installed, with operating

pressure and capacity factory set and field adjustable.

G. Automatic Flow-Control Valves:

1. Body: Brass or ferrous metal.

2. Flow Control Assembly, provide either of the following:

a. Piston and Spring Assembly: Corrosion resistant, tamper proof, self-cleaning, and

removable.

b. Elastomeric Diaphragm and Polyphenylsulfone Orifice Plate: Operating ranges

within 2- to 80-psig (14- to 550-kPa) differential pressure.

3. Combination Assemblies: Include bonze or brass-alloy ball valve.

4. Identification Tag: Marked with zone identification, valve number, and flow rate.

5. Size: Same as pipe in which installed.

6. Performance: Maintain constant flow within plus or minus 10 percent regardless of

system pressure fluctuations.

7. Minimum CWP Rating: 175 psig (1207 kPa).


2.2 AIR-CONTROL DEVICES

A. Manual Air Vents:

1. Body: Bronze.

2. Internal Parts: Nonferrous.

3. Operator: Screwdriver or thumbscrew.

4. Inlet Connection: NPS 1/2 (DN 15).

5. Discharge Connection: NPS 1/8 (DN 6).

6. CWP Rating: 150 psig (1035 kPa).





B. Expansion Tanks:

1. Tank: Welded corrosion resistant steel (suitable for pool environment), rated for 125-psig

(860-kPa) working pressure and 375 deg F (191 deg C) maximum operating temperature,

with taps in bottom of tank for tank fitting and taps in end of tank for gage glass. Tanks

shall be factory tested after taps are fabricated and shall be labeled according to ASME

Boiler and Pressure Vessel Code: Section VIII, Division 1.

2. Air-Control Tank Fitting: Cast-iron body, copper-plated tube, brass vent tube plug, and

stainless-steel ball check, 100-gal. (379-L) unit only; sized for compression-tank

diameter. Provide tank fittings for 125-psig (860-kPa) working pressure and 250 deg F

(121 deg C) maximum operating temperature.

3. Tank Drain Fitting: Brass body, nonferrous internal parts; 125-psig (860-kPa) working

pressure and 240 deg F (116 deg C) maximum operating temperature; constructed to

admit air to compression tank, drain water, and close off system.

4. Gage Glass: Full height with dual manual shutoff valves, 3/4-inch- (20-mm-) diameter

gage glass, and slotted-metal glass guard.

C. In-Line Air Separators:

1. Tank: One-piece cast iron with an integral weir constructed to decelerate system flow to

maximize air separation.

2. Maximum Working Pressure: Up to 175 psig (1207 kPa).

3. Maximum Operating Temperature: Up to 300 deg F (149 deg C).

2.3 STRAINERS

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 (DN 50) and smaller; flanged ends for

NPS 2-1/2 (DN 65) and larger.

3. Strainer Screen: Stainless-steel, -mesh strainer, or perforated stainless-steel basket.


2.4 CONNECTORS

A. Stainless-Steel Bellow, Flexible Connectors:

1. Body: Stainless-steel bellows with woven, flexible, bronze, wire-reinforcing protective

jacket.

2. End Connections: Threaded or flanged to match equipment connected.

3. Performance: Capable of 3/4-inch (20-mm) misalignment.






PART 3 - EXECUTION

3.1 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 calibrated-orifice, balancing valves at each branch connection to return main.

C. Install calibrated-orifice, balancing valves in the return pipe of each heating or cooling terminal.

D. Install check valves at each pump discharge and elsewhere as required to control flow direction.

E. Install safety valves at hot-water generators and elsewhere as required by ASME Boiler and

Pressure Vessel Code. Install drip-pan elbow on safety-valve outlet and pipe without valves to

the outdoors; pipe drain to nearest floor drain or as indicated on Drawings. Comply with ASME

Boiler and Pressure Vessel Code: Section VIII, Division 1, for installation requirements.

F. Install pressure-reducing valves at makeup-water connection to regulate system fill pressure.

3.2 HYDRONIC SPECIALTIES INSTALLATION

A. Install manual air vents at high points in piping, at heat-transfer coils, and elsewhere as required

for system air venting.

B. Install piping from boiler air outlet, air separator, or air purger to expansion tank with a 2

percent upward slope toward tank.

C. Install in-line air separators in pump suction. Install drain valve on air separators NPS 2

(DN 50) and larger.

D. Install expansion tanks above the air separator. Install tank fitting in tank bottom and charge

tank. Use manual vent for initial fill to establish proper water level in tank.

1. Install tank fittings that are shipped loose.

2. Support tank from floor or structure above with sufficient strength to carry weight of

tank, piping connections, fittings, plus tank full of water. Do not overload building

components and structural members.

E. Install expansion tanks on the floor. Vent and purge air from hydronic system, and ensure that

tank is properly charged with air to suit system Project requirements.



BOILER 235216 - 1


SECTION 235216 - DUPLEX STAINLESS STEEL FIRETUBE CONDENSING BOILERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes packaged, factory-fabricated and -assembled, gas-fired, firetube duplex

stainless steel ultra-high efficiency condensing boilers, trim and accessories for generating hot water.

1.2 REFERENCES

A. ASME Section IV

B. CAN-1.3.1-77, Industrial and Commercial Gas Fired Packaged Boilers

C. CSD-1, Controls and Safety Devices

D. XL GAPS

E. NEC, National Electric Code

F. UL-795 7th Edition

G. AHRI, BTS-2000

H. ASHRAE 90.1

1.3 SUBMITTALS

A. Product Data: Include performance data, operating characteristics, technical product data, rated

capacities of selected model, weights (shipping, installed and operating), installation and start-up

instructions, and furnished accessory information.

B. Shop Drawings: For boiler, standard boiler trim and accessories.

1. End Assembly Drawing: Detail overall dimensions, connection sizes, connection locations, and

clearance requirements.

2. Wiring Diagrams: Detail electrical requirements for the boiler including ladder type wiring

diagrams for power, interlock and control wiring. Clearly differentiate between portions of

wiring that are factory installed and portions to be field installed.

C. Certificate of Product Rating: Submit AHRI Certificate indicating Thermal Efficiency, Combustion

Efficiency, Materials of Construction, Input, and Gross Output conform to the design basis.

D. Thermal efficiency curves: Submit thermal efficiency curves for a minimum of 5 input rates between

and including minimum and maximum rated capacities, for return water temperatures ranging from

80 deg F (27 deg C) to 180 deg F (82 deg C).

E. Water side pressure drop curve.

F. Flue gas temperature curves: Submit flue gas temperature curves for minimum and maximum boiler

capacity, for return water temperatures ranging from 80 deg F (27 deg C) to 160 deg F (71 deg C).


BOILER 235216 - 2


1. If submitted flue gas temperatures, minimum or maximum inputs are different from that

of the basis of design manufacturer and model, the manufacturer shall be responsible for

draft calculations and reselection of the flue gas exhaust system.

G. Source quality-control test reports.

H. Field quality-control test reports: Start-up by a factory authorized service company.

I. Operation and Maintenance Data: Data to be included in Installation and Operation Manual.

J. Warranty: Standard warranty specified in this Section.


A. Manufacturer Qualifications: Firms regularly engaged in the manufacture of condensing hydronic

boilers with welded steel pressure vessels, whose products have been in satisfactory use in service for

not less than twenty-five (25) years. The manufacturer must be privately owned and headquartered in

North America. The specifying engineer, contractor and end customer must have the option to visit

the factory during the manufacture of the boilers and be able to witness test fire and other relevant

procedures.

B. Aftermarket Support and Service: The manufacturer shall have a factory authorized service training

program, where boiler technicians can attend a training class and obtain certification to perform start-

up, maintenance and basic troubleshooting specific to the product line.

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. ASME Compliance: Fabricate and label boilers to comply with ASME Boiler and Pressure Vessel

Code, Section IV “Heating Boilers”, for a maximum allowable working pressure of 160 PSIG (1103

kPa).

E. CSD-1 Compliance: The boiler shall comply with ASME Controls and Safety Devices for

Automatically Fired Boilers (CSD-1).

F. ASHRAE/IESNA 90.1 Compliance: Boilers shall have minimum efficiency according to “Gas and

Oil Fired Boilers - Minimum Efficiency Requirements.”

G. UL Compliance: Boilers must be tested for compliance with UL 795, “Commercial-Industrial Gas

Heating Equipment.” Boilers shall be listed and labeled by ETL.

H. AHRI Compliance: Boilers shall be tested and rated according to the BTS-2000 test standard and

verified by AHRI.

I. NOx Emissions Compliance: Boiler shall be tested for compliance with SCAQMD and TCEQ.

J. The equipment shall be of the type, design, and size that the manufacturer currently offers for sale and

appears in the manufacturer’s current catalog.

K. The equipment shall fit within the allocated space, leaving ample allowance for maintenance and

inspection.

L. The equipment shall be new and fabricated from new materials. The equipment shall be free from

defects in materials and workmanship.

M. All units of the same classification shall be identical to the extent necessary to ensure

interchangeability of parts, assemblies, accessories, and spare parts wherever possible.


BOILER 235216 - 3


N. In order to provide unit responsibility for the specified capacities, efficiencies, and performance, the

boiler manufacturer shall certify in writing that the equipment being submitted shall perform as

specified.

1.5 COORDINATION

A. Mechanical contractor shall coordinate the size and location of concrete bases. Cast anchor-bolt

inserts into bases. Concrete reinforcement and formwork requirements are specified in Division 03.

1.6 WARRANTY

A. Standard Warranty: Manufacturer’s standard form in which manufacturer agrees to repair or replace

components of boilers that fail in materials or workmanship within specified warranty period.

1. Warranty Period for the Pressure Vessel and Heat Exchanger: The boiler manufacturer shall

warranty against failure due to thermal shock, flue gas condensate corrosion, and/or defective

material or workmanship for a period of 10 years, non-prorated, from the date of shipment

from the factory provided the boiler is installed, controlled, operated and maintained in

accordance with the Installation, Operation and Maintenance Manual.

2. Warranty Period for all other components: The boiler manufacturer will repair or replace any

part of the boiler that is found to be defective in workmanship or material within eighteen (18)

months of shipment from the factory or twelve (12) months from start-up, whichever comes

first.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. This specification is based on the Endura series boilers as manufactured by Fulton Heating Solutions,

Inc. Equivalent units and manufacturers must meet all performance criteria, and will be considered

upon prior approval.

B. Basis-of-Design Product: Subject to compliance with requirements, provide Fulton Heating Solutions,

Inc.; Endura model EDR-1500 duplex stainless steel firetube condensing boiler.

C. The boiler manufacturer shall have the capability to construct an engineered hydronic system, skid

mounted, for the above referenced boilers incorporating single point electrical, supply water, return

water, fresh water make up, fuel, and drain. The boiler manufacturer shall have the engineering

capabilities for all aspects of the mechanical, electrical and control design aspects of the skid mounted

system.

2.2 CONSTRUCTION

A. Description: Factory-fabricated, -assembled, and -pressure tested, duplex stainless steel firetube

condensing boiler with heat exchanger sealed pressure tight, built on a steel base; including flue gas

vent; combustion air intake connections, water supply, water return, condensate drain, and controls.

The boiler, burner and controls shall be completely factory assembled as a self-contained unit. Each

boiler shall be neatly finished, thoroughly tested, and properly packaged for shipping. Closed-loop

water heating service only.


BOILER 235216 - 4


B. Heat Exchanger: The heat exchanger is defined as the surfaces of the pressure vessel where flue gases

transfer sensible and latent heat to the hydronic fluid. The heat exchanger shall be a three-pass

firetube design constructed using only duplex alloys of stainless steel.

1. The boiler shall be a firetube design, such that all combustion chamber components are within

water-backed areas. Watertube boilers will not be accepted.

2. Furnace: First pass of the combustion chamber shall be constructed of duplex alloy stainless

steel with a minimum wall thickness of 1/4 inch (6.35 mm) and a minimum bottom head

thickness of 5/8 inch (15.875 mm).

3. Firetubes: Second and third passes of the combustion chamber shall be constructed of duplex

alloys of stainless steel having a minimum wall thickness of 0.109 inch (2.7686 mm).

4. Furnace to tube connections shall be constructed with low weld intensity, a tube to tube

minimum spacing of 2 inch (5.08 cm) center to center, minimum 5/8 inch (15.875 mm) tube to

tube ligament and shall not contain any overlapping welds.

5. Heat exchange capability shall be maximized within the heat exchanger via the use of

corrugated firetube technology. The corrugation process shall not remove any material from

the tubes. Aluminum heat transfer enhancements are dissimilar metals and are unacceptable.

6. Material: The heat exchanger shall have the following material characteristics and properties:

a. The metallic crystalline lattice microstructure shall contain approximately equal amounts

of body center cubic (BCC) and face centered cubic (FCC) structures to offer high

resistance to intergranular corrosion.

b. A minimum Pitting Resistance Equivalent Number (PREN) of 26.

c. A minimum Yield Strength of 65 ksi (448 MPa) at 0.2% plastic strain.

d. A minimum Ultimate Tensile Strength of 94 ksi (648 MPa).

e. To minimize stresses caused by uneven expansion and contraction, the Coefficient of

Thermal Expansion at 212 deg F (100 deg C) shall not be less than 7.0 x 10-6 in/in deg F

(12.6 x 10-6 mm/mm deg C) and shall not be greater than 7.5 x 10-6 in/in deg F (13.5 x

10-6 mm/mm deg C)

f. To increase resistance to pitting and crevice corrosion, the Chromium content shall not

be less than 21% by mass.

g. For high mechanical strength, the Nitrogen content shall not be less than 0.17% by mass.

h. Boilers with heat exchangers constructed of austenitic stainless steels, such as 316L or

304, and ferritic stainless steels, such as 439, are unacceptable.

i. Boilers with heat exchangers constructed of cast aluminum, mild steel, cast iron or

copper finned tube materials are unacceptable.

C. Pressure Vessel: Design and construction shall be in accordance with Section IV of the ASME Code

for heating boilers.

1. The shell shall be minimum 0.3125 inch (7.9375 mm) thick steel, SA-790 or SA-516 Grade 70.

2. The top head shall be a minimum 0.375 inch (9.525 mm) thick steel, SA-790 or SA-516 Grade

70.

3. The water side of the pressure vessel shall be a counter-flow design with internal water-

baffling plates.


BOILER 235216 - 5


4. The boiler return and supply water connections shall be 4 inch (10.16 cm) 150# ANSI flanged.

The water connections shall not be designed to support an external structural load from the

piping system.

5. The water volume of the boiler shall not be less than 104 gal (394 L).

a. For boilers with a lower water volume, the boiler manufacturer shall provide a buffer

tank and all associated buffer tank ancillaries to make equivalent to the total volume of

the design basis.

6. The maximum water pressure drop across the boiler inlet and outlet connections, shall not

exceed 0.9 PSID (6.205 kPa differential) at 150 GPM (568 L/min).

D. Burner: Standard natural gas, forced draft.

1. Burner Head: Shall be a woven fiber premix design.

2. Excess Air: The burner shall operate at no greater than 7.0% excess O2 over the entire

turndown range. Due to significant reductions in combustion efficiency at high levels of excess

O2, boilers exceeding 7.0% excess O2 at any operating condition shall not be accepted.

3. Emissions: When operating on natural gas, the boiler shall maintain a NOx level of <20 ppm,

and CO emissions less than 50 ppm, over the complete combustion range at a 3% O2 correction.

E. Blower: Variable speed, non sparking, hardened aluminum impeller centrifugal fan to operate during

each burner firing sequence and to pre-purge and post-purge the combustion chamber.

1. Motor: Brushless DC variable speed motor with hall effect sensor feedback; internal electronic

commutation controller with built in speed control and protection features; long life, sealed,

ball bearing with high temperature grease.

2. Variable speed blower: PWM signal input with tachometer output.

F. Main Fuel Train:

1. The boiler shall have a pre-mix combustion system, capable of operating at a minimum 4 inch

W.C. (10.16 cm W.C.) incoming natural gas pressure while simultaneously achieving

emissions performance, full modulation, and full rated input capacity. Maximum natural gas

pressure allowed to the inlet of the fuel train shall be no less than 28 inch W.C. (71.12 cm

W.C.).

2. A factory mounted main fuel train shall be supplied. The fuel train shall be fully assembled

complete with high and low gas pressure switches, wired, and installed on the boiler and shall

comply with CSD-1 code. The fuel train components shall be enclosed within the boiler

cabinet.

3. A lock up regulator upstream of the fuel train shall be furnished by the boiler manufacturer as a

standard component integral to the boiler cabinet. Factory test fire of the boiler with the

provided lock up regulator is required.

4. Standard CSD-1 fuel train shall comply with IRI, which has been replaced by XL GAPS.

G. Ignition: Direct spark ignition with transformer. Pilot assemblies are not accepted. A UV scanner

shall be utilized to ensure precise communication of flame status back to the flame programmer.

Flame rods are not accepted.

H. Boiler Enclosure:


BOILER 235216 - 6


1. Sealed Cabinet: Jacketed steel enclosure with left hinged full height front access door, fully

removable latching access panels, gasketed seams to maintain sealed combustion, mounted on

a steel skid with steel plate decking.

2. Control Enclosure: NEMA 250, Type 1.

3. Finish: Internally and externally primed and painted finish.

4. Combustion Air: Drawn from the inside of the sealed cabinet, preheating the combustion air.

I. Rigging and Placement: The boiler shall come with lifting eyes and fork hole accessibility for rigging.

J. Exhaust Manifold: Shall be constructed of stainless steel, with an area for the collection and disposal

of flue gas condensate. The exhaust outlet connection shall allow for immediate vertical rise off the

boiler without requiring an elbow or tee.

K. Characteristics and Capacities:

1. Heating Medium: Closed loop hot water with up to 50% propylene or ethylene glycol by

volume. Standard capacities shall be based on 100% water.

2. Design Water Pressure Rating: 160 psig (1103 kPa).

3. Safety Relief Valve Setting: 125 psig (862 kPa).

4. Minimum Return Water Temperature: No minimum temperature required.

5. Maximum Allowable Water Temperature: 210 deg F (98.89 deg C).

6. Minimum Water Flow Rate: No minimum flow rate required to protect the heat exchanger.

7. Maximum Water Flow Rate: No maximum flow rate requirement.

8. Minimum Delta-T: No minimum delta-T required.

9. Maximum Delta-T: 100 deg F (37.78 deg C).

10. Minimum Side Clearance: Shall not exceed 1 inch (2.54 cm) between any number of boilers.

11. Jacket Losses: External convection and radiation heat losses to the boiler room from the boiler

shall comply with IAW ASHRAE 103-2007, and shall not exceed 0.2% of the rated boiler

input at maximum capacity.

L. The boiler shall have its efficiency witnessed and certified by an independent third party, and the

efficiency must be listed on the AHRI directory (www.ahridirectory.org) for natural gas operation.

The test parameters for efficiency certification shall be the BTS-2000 standard. The certified thermal

efficiency for natural gas firing shall not be less than 93.5%.

M. A zero flow or low flow condition shall not cause any harm to the pressure vessel or heat exchanger

of the boiler. Flow switches, dedicated circulator pumps, or primary-secondary arrangements shall not

be required to protect the boiler from thermal shock. Boilers requiring the use of flow switches or

primary-secondary piping arrangements are unacceptable.

N. The dimensions of the boiler shall not be more than (Height x Width x Depth) 80 x 34 x 61 in3 (2.032

x 0.8636 x 1.5494 m3).

O. The dry weight of the boiler shall not be less than 2260 lbs. (1025 kg).

P. The equipment shall be in strict compliance with the requirements of this specification and shall be

the manufacturer’s standard commercial product unless specified otherwise. Additional equipment

features, details, accessories, etc. which are not specifically identified but which are a part of the

manufacturer’s standard commercial product, shall be included in the equipment being furnished.


BOILER 235216 - 7


2.3 TRIM

A. Safety Relief Valve: ASME Rated.

B. Pressure and Temperature Gauge: Minimum 3-1/2 inch diam. (8.89 cm diam.), combination pressure

and -temperature gauge. Gauges shall have operating-pressure and -temperature ranges so normal

operating range is about 50 percent of full range.

1. Mounted in the field in the boiler supply water piping prior to the first isolation valve by the

boiler installer.

C. Combustion Air Inlet Filter: 50 Micron.

D. Flue Gas Condensate Drain Trap: A flue gas condensate drain trap shall be provided to prevent

positive pressure exhaust gases from entering the boiler room.

E. Flue Gas Condensate Neutralization: pH neutralization accommodations available upon request.

2.4 CONTROLS

A. The boiler electrical control panel shall include the following devices and features:

1. 7 inch (17.78 cm) color touch screen control display factory mounted on the front cabinet

panel door.

a. The control display shall serve as a user interface for programming parameters, boiler

control and monitoring; and shall feature a screen saver, screen disable for cleaning,

contrast control, volume control for alarm features, boiler status, configuration, history

and diagnostics.

2. The boiler control panel shall be constructed in a UL 508 approved panel shop.

3. 24 VAC control transformer.

4. Control relay for 120 VAC motorized isolation valve control.

5. The flame safeguard control on the boiler shall be integrated with temperature control and

lead/lag sequencing modular boiler plant functionality.

6. All controls are to be cabinet, vessel or panel mounted and so located on the boiler as to

provide ease of servicing the boiler without disturbing the controls. All controls shall be

mounted and wired according to UL requirements.

B. Burner Operating Controls: To maintain safe operating conditions, factory mounted and wired burner

safety controls limit burner operation:

1. High Limit: A single UL 353 temperature probe shall function as a dual-element outlet

temperature sensor and shall comply with CSD-1 CW-400 requirements for 2 independent

temperature control devices.

a. High limit sensor shall be NTC resistive 10KOhm +/- 1% at 77 deg F (25 deg C). Sensor

shall have brass material bulb with 1.181 +/- 0.015 inch (2.9997 +/- 0.0381 cm) insertion

and 0.370 +/- 0.005 inch (0.9398 +/- 0.0127 cm) bulb diameter.

b. Manual reset stops burner if operating conditions rise above maximum boiler design

temperature.

2. Low-Water Cut Off: Electronic probe type mounted in the pressure vessel shall prevent burner

operation on low water alarm.


BOILER 235216 - 8


3. Air Safety Switch: Prevent operation unless sufficient combustion air is proven.

4. High Condensate Probe: Prevent operation in the event of a blocked condensate drain.

5. Blocked Exhaust: Prevent operation in the event of a blocked flue gas exhaust stack.

C. Boiler Operating Controls and Features:

1. Proportional Integral Derivative (PID) temperature load control capability for up to two loops,

central heat and domestic hot water.

2. Operating temperature limit for automatic start and stop.

3. Flue gas exhaust temperature monitoring.

4. Return water temperature monitoring.

5. Time of day display.

6. Customizable boiler name display.

7. Alarm history for 15 most recent alarms including equipment status at time of lockout.

8. Password protection options.

9. Indirect domestic hot water priority.

10. [Optional:] Outdoor air temperature (OAT) reset controls with warm weather shutdown:

a. OAT reset shall automatically adjust the setpoint according to changes in the outdoor

temperature.

b. The boiler manufacturer shall provide an OAT sensor and module.

c. The sensor shall have +/- 1.5 deg F (+/- 0.833 deg C) accuracy at 70 deg F (21 deg C),

field installed in an outdoor area not exposed to direct sunlight or the exhaust of other

mechanical equipment, and field wired to the master boiler.

d. The control shall be field programmed with the outdoor reset schedule.

e. The control shall have the ability to disable the entire hydronic boiler system on warm

weather shutdown based on a programmable OAT.

D. Sequencing Control of Modular Boiler Plants: Sequencing capabilities (lead/lag) shall be integral to

the boiler controller for up to 8 boilers installed in the same hydronic loop and shall not require an

external panel.

1. The boiler manufacturer shall provide a supply water header temperature sensor.

a. The sensor shall be NTC resistive 10KOhm +/- 1% at 77 deg F (25 deg C), field

installed in the common supply water piping, and field wired to the master boiler.

2. One (1) boiler in the system shall be field programmed as the master and subsequent boilers

will be programmed as lag units.

3. Sequence of Operation:

a. Upon call for heat and demand in the system, a boiler will be enabled at low fire and will

modulate according to demand and PID settings up to the base load common value. The

base load common shall be field adjustable with a default setting of 40%.


BOILER 235216 - 9


b. If the heating load exceeds the output at the base load common firing rate, the next

boiler in the sequence will be enabled at low fire. Modular boilers will modulate up and

down in parallel as a cohesive unit with infinite modulation points to meet heating load

requirements.

c. This process continues until all available boilers are enabled, at which point they are

released to modulate up to full fire if required.

d. As the load decreases, the boilers will be sequentially disabled.

e. Boiler sequence order shall be rotated on a programmable number of run hours.

f. A boiler in lockout alarm shall be automatically removed from the sequence order.

g. Lag boilers shall default to local control if the master boiler is fully powered off or

removed.

h. Each individual boiler shall enable and disable a water circulation control device. The

enable of the device, for example a motorized isolation valve or boiler circulator, will be

simultaneous with the heat demand for that boiler. The disable of each device will be

based on a programmable time delay when the heat demand is no longer present. In

variable primary arrangements, the control shall hold the lead boiler isolation valve open

at all times.

E. Building Automation System Interface: Hardware and software to enable building automation system

(BAS) to monitor, control, and display boiler status and alarms.

1. Hardwired Contacts:

a. Monitoring: Boiler Status, Burner Demand, General Alarm, Firing Rate.

b. Control with Factory Installed Jumper: Safety Interlock for External Device, Remote

Boiler Enable, Remote Lead/Lag Enable, Emergency Stop (E-Stop)

c. Remote Setpoint Signal: 4-20 mA.

2. Communication Protocol: A communication interface with BAS shall enable BAS operator to

remotely enable and monitor the boiler plant from an operator workstation.

a. The boilers will communicate with each other and the Building Automation System via

a daisy chain addressed Modbus network. Field wiring between nodes shall be twisted

pair low voltage with shielded ground.

b. A BACnet MSTP and IP protocol communication gateway shall be provided. The

BACnet gateway is field installed on the MASTER boiler. Lag boilers shall not require a

dedicated BACnet gateway for the BAS to monitor status. The BAS shall only be

required to communicate through the MASTER boiler. A communication point mapping

list shall be provided.

2.5 ELECTRICAL POWER

A. Single-Point Field Power Connection: Factory-installed and factory-wired switches, transformers,

control and safety devices and other devices shall provide a single-point field power connection to the

boiler.

B. Electrical Characteristics:

1. Voltage: 120 V.


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2. Phase: Single.

3. Frequency: 60 Hz.

2.6 VENTING

A. The boiler shall be capable of operating with a stack effect not exceeding -0.04 inch W.C. (-0.1016

cm W.C.) and a combined air intake and exhaust venting pressure drop not exceeding +1.50 inch W.C.

(+3.81 cm W.C.).

B. Combustion Air Intake: It shall be acceptable to either direct vent the boiler using sealed combustion

by drawing combustion air in from the outdoors or by drawing air from the mechanical space itself.

1. Sealed Combustion: Schedule 40 PVC pipe or smooth-walled galvanized steel, vent

termination with 1/2 x 1/2 in2 (1.27 x 1.27 cm2) mesh bird screen.

2. Mechanical Space: Adequate combustion air and ventilation shall be supplied to the boiler

room in accordance with local codes.

C. Flue Gas Exhaust: The flue gas exhaust stack shall be AL 29-4C or 316L stainless steel, listed and

labeled to UL-1738 / C-UL S636 for use with Category II/IV appliances, guaranteed appropriate for

the application by the manufacturer and supplier of the venting.

D. The boiler shall be capable of common exhaust and intake venting. The draft system shall be designed

to prevent the backflow of exhaust gases through idle boilers.

E. Condensate drain piping must be galvanized, stainless steel, or Schedule 40 CPVC. Copper, carbon

steel, or PVC pipe materials are not accepted.

2.7 SOURCE QUALITY CONTROL

A. Test and inspect factory-assembled boilers, before shipping, according to ASME Boiler and Pressure

Vessel Code.

B. Each boiler shall be installed and operated in a functioning hydronic system, inclusive of venting, as

part of the manufacturing process. A factory test fire report corresponding to the boiler configuration

shall be included with each boiler.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Before boiler installation, examine roughing-in for concrete equipment bases, anchor-bolt sizes and

locations, and piping and electrical connections to verify actual locations, sizes, and other conditions

affecting boiler performance, maintenance, and operations.

1. Final boiler locations indicated on Drawings are approximate. Determine exact locations before

roughing-in for piping and electrical connections.

B. Examine mechanical spaces for suitable conditions where boilers will be installed.

C. Proceed with installation only after satisfactory conditions have been verified.


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3.2 BOILER INSTALLATION

A. Install boilers level on concrete base, minimum 3-1/2 inch (8.89 cm) high. Concrete base is specified

in Division 23 Section “Common Work Results for HVAC,” and concrete materials and installation

requirements are specified in Division 03.

B. Install gas-fired boilers according to NFPA 54. Equipment and materials shall be installed in an

approved manner and in accordance with the boiler manufacturer’s installation requirements.

C. Assemble and install boiler trim.

D. Install electrical devices furnished with the boiler but not specified to be factory mounted.

E. Install control wiring to field-mounted electrical devices.

3.3 CONNECTIONS

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

general arrangement of piping, fittings, and specialties.

B. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least full size

of connection. Provide an isolation valve if required.

C. Connect gas piping to boiler gas train inlet with isolation valve and union. Piping shall be at least full

size of gas train connection. Provide a reducer if required.

D. Connect hot water supply and return water connections with shutoff valve and union or flange at each

connection.

E. Install piping from safety relief valves to the nearest floor drain.

F. Install piping from flue gas condensate drain connection to the condensate drain trap and to the

nearest floor drain.

G. Boiler Venting:

1. Install flue venting and combustion air-intake.

2. Connect to boiler connections, flue size and type as recommended by the manufacturer.

H. Ground equipment according to Division 26 Section “Grounding and Bonding for Electrical

Systems.”

I. Connect wiring according to Division 26 Section “Low-Voltage Electrical Power Conductors and

Cables.”


A. Perform tests and inspections and prepare test reports.

1. After boiler installation is completed, the manufacturer shall provide the services of a field

representative to inspect components, assemblies, and equipment installations, including

connections and provide startup of the boiler and training to the operator.

2. Arrange with National Board of Boiler and Pressure Vessel Inspectors for inspection of boilers

and piping. Obtain certification for completed boiler units, deliver to Owner, and obtain

receipt.

B. Tests and inspections:


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1. Perform installation and startup checks according to manufacturer’s written instructions.

2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist.

3. Operational Test: Start units to confirm proper motor rotation and unit operation. Adjust air-

fuel ratio and combustion.

a. Check and adjust initial operating set points and high- and low-limit safety set points of

fuel supply, water level and water temperature.

b. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

C. Remove and replace malfunctioning units and retest as specified above.

D. Occupancy Adjustments: When requested within 12 months of startup, provide on-site assistance in

adjusting system to suit actual occupied conditions. Provide up to 2 visits to Project during other than

normal occupancy hours for this purpose.


EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING 230516 - 1 Spec.pdf · 2019-01-02 · Mountain Crest...

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Transcript of EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING 230516 - 1 Spec.pdf · 2019-01-02 · Mountain Crest...