SECTION 23 05 29 HANGERS AND SUPPORTS FOR HVAC PIPING … · e Learning Center 15733 S. Padre...

July 28, 2017 Construction Documents

Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 05 29 - 1 HANGERS AND SUPPORTS FOR HVAC PIPING & EQ

SECTION 23 05 29

HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Pipe hangers and supports.2. Hanger rods.3. Sleeves.4. Mechanical sleeve seals.5. Formed steel channel.6. Firestopping relating to HVAC work.7. Firestopping accessories.

B. Related Sections:1. Section 09 90 00 - Painting and Coating: Product and execution requirements for painting

specified by this section.2. Section 23 05 03 - Pipes and Tubes for HVAC Piping and Equipment: Execution

requirements for placement of hangers and supports specified by this section.3. Section 23 05 48 - Vibration and Seismic Controls for HVAC Piping and Equipment:

Product and execution requirements for vibration isolators.4. Section 23 21 13 - Hydronic Piping: Execution requirements for placement of hangers

and supports specified by this section.

1.2 DEFINITIONS

A. Firestopping (Through-Penetration Protection System): Sealing or stuffing material orassembly placed in spaces between and penetrations through building materials to arrestmovement of fire, smoke, heat, and hot gases through fire rated construction.

1.3 SYSTEM DESCRIPTION

A. Firestopping Materials: to achieve fire ratings of adjacent construction Design Numbers notedon Drawings.

B. Firestop interruptions to fire rated assemblies, materials, and components.

1.4 SUBMITTALS

A. Shop Drawings: Indicate system layout with location including critical dimensions, sizes, andpipe hanger and support locations and detail of trapeze hangers.

B. Product Data:1. Hangers and Supports: Submit manufacturers catalog data including load capacity.2. Firestopping: Submit data on product characteristics, performance and limitation criteria.



C. Firestopping Schedule: Submit schedule of opening locations and sizes, penetrating items, andrequired listed design numbers to seal openings to maintain fire resistance rating of adjacentassembly.

D. Manufacturer's Installation Instructions:1. Hangers and Supports: Submit special procedures and assembly of components.2. Firestopping: Submit preparation and installation instructions.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labeled with manufacturer'sidentification.

B. Protect from weather and construction traffic, dirt, water, chemical, and damage, by storing inoriginal packaging.

1.6 ENVIRONMENTAL REQUIREMENTS

A. Do not apply firestopping materials when temperature of substrate material and ambient air isbelow 60 degrees F.

B. Maintain this minimum temperature before, during, and for minimum 3 days after installationof firestopping materials.

C. Provide ventilation in areas to receive solvent cured materials.

PART 2 PRODUCTS

2.1 PIPE HANGERS AND SUPPORTS

A. Hydronic Piping:1. Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Stainless steel, adjustable swivel, split ring.2. Hangers for Cold Pipe Sizes 2 inches and Larger: Stainless steel, adjustable, clevis.3. Hangers for Hot Pipe Sizes 2 to 4 inches: Stainless steel, adjustable, clevis.4. Multiple or Trapeze Hangers: Stainless steel channels with welded spacers and hanger

rods.5. Vertical Support: Steel riser clamp.6. Floor Support for Cold Pipe: Cast iron adjustable pipe saddle, lock nut, nipple, floor

flange, and concrete pier or steel support.7. Floor Support for Hot Pipe Sizes 4 Inches and Smaller: Cast iron adjustable pipe saddle,

lock nut, nipple, floor flange, and concrete pier or steel support.8. Copper Pipe Support: Copper-plated, carbon steel ring.

2.2 ACCESSORIES

A. Hanger Rods: Stainless steel threaded both ends, threaded on one end, or continuous threaded.



2.3 INSERTS

A. Inserts: Stainless steel shell and expander plug for threaded connection with lateraladjustment, top slot for reinforcing rods, lugs for attaching to forms; size inserts to suitthreaded hanger rods.

2.4 SLEEVES

A. Sleeves for Pipes Through Non-fire Rated Floors: 18 gage thick galvanized steel.

B. Sleeves for Pipes Through Non-fire Rated Beams, Walls, Footings, and Potentially WetFloors: Steel pipe or 18 gage thick galvanized steel.

C. Sleeves for Round Ductwork: Galvanized steel.

D. Sleeves for Rectangular Ductwork: Galvanized steel or wood.

2.5 FORMED STEEL CHANNEL

A. Product Description: Stainless steel, 12 gage thick, with holes 1-1/2 inches on center.

2.6 FIRESTOPPING

A. Product Description: Different types of products by multiple manufacturers are acceptable asrequired to meet specified system description and performance requirements; provide only onetype for each similar application.1. Silicone Firestopping Elastomeric Firestopping: Single component silicone elastomeric

compound and compatible silicone sealant.2. Foam Firestopping Compounds: Single component foam compound.3. Formulated Firestopping Compound of Incombustible Fibers: Formulated compound

mixed with incombustible non-asbestos fibers.4. Fiber Stuffing and Sealant Firestopping: Composite of mineral fiber stuffing insulation

with silicone elastomer for smoke stopping.5. Mechanical Firestopping Device with Fillers: Mechanical device with incombustible

fillers and silicone elastomer, covered with sheet stainless steel jacket, joined withcollars, penetration sealed with flanged stops.

6. Intumescent Firestopping: Intumescent putty compound which expands on exposure tosurface heat gain.

7. Firestop Pillows: Formed mineral fiber pillows.

B. Color: As selected from manufacturer’s full range of colors.

2.7 FIRESTOPPING ACCESSORIES

A. Primer: Type recommended by firestopping manufacturer for specific substrate surfaces andsuitable for required fire ratings.

B. Installation Accessories: Provide clips, collars, fasteners, temporary stops or dams, and otherdevices required to position and retain materials in place.



C. General:1. Furnish UL listed products.2. Select products with rating not less than rating of wall or floor being penetrated.

D. Non-Rated Surfaces:1. Stamped steel, chrome plated, hinged, split ring escutcheons or floor plates or ceiling

plates for covering openings in occupied areas where piping is exposed.2. For exterior wall openings below grade, furnish mechanical sealing device to

continuously fill annular space between piping and cored opening or water-stop type wallsleeve.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify openings are ready to receive sleeves.

B. Verify openings are ready to receive firestopping.

3.2 PREPARATION

A. Clean substrate surfaces of dirt, dust, grease, oil, loose material, or other matter affecting bondof firestopping material.

B. Remove incompatible materials affecting bond.

C. Install backing or damming materials to arrest liquid material leakage.

D. Do not drill or cut structural members.

3.3 INSTALLATION - INSERTS

A. Install inserts for placement in concrete forms.

B. Install inserts for suspending hangers from reinforced concrete slabs and sides of reinforcedconcrete beams.

C. Provide hooked rod to concrete reinforcement section for inserts carrying pipe 4 inches andlarger.

D. Where concrete slabs form finished ceiling, locate inserts flush with slab surface.

3.4 INSTALLATION - PIPE HANGERS AND SUPPORTS

A. Support horizontal piping as scheduled.

B. Install hangers with minimum 1/2 inch space between finished covering and adjacent work.



C. Place hangers within 12 inches of each horizontal elbow.

D. Use hangers with 1-1/2 inch minimum vertical adjustment.

E. Where piping is installed in parallel and at same elevation, provide multiple pipe or trapezehangers.

F. Support riser piping independently of connected horizontal piping.

G. Provide copper plated hangers and supports for copper piping.

H. Design hangers for pipe movement without disengagement of supported pipe.

I. Provide clearance in hangers and from structure and other equipment for installation ofinsulation. Refer to Section 22 07 00.

3.5 INSTALLATION - SLEEVES

A. Exterior watertight entries: Seal with mechanical sleeve seals.

B. Set sleeves in position in forms. Provide reinforcing around sleeves.

C. Size sleeves large enough to allow for movement due to expansion and contraction. Providefor continuous insulation wrapping.

D. Extend sleeves through floors 1 inch above finished floor level. Caulk sleeves.

E. Where piping or ductwork penetrates floor, ceiling, or wall, close off space between pipe orduct and adjacent work with firestopping insulation and caulk airtight. Provide close fittingmetal collar or escutcheon covers at both sides of penetration.

F. Install chrome plated steel escutcheons at finished surfaces.

3.6 INSTALLATION - FIRESTOPPING

A. Install material at fire rated construction perimeters and openings containing penetratingsleeves, piping, ductwork, and other items, requiring firestopping.

B. Apply primer where recommended by manufacturer for type of firestopping material andsubstrate involved, and as required for compliance with required fire ratings.

C. Apply firestopping material in sufficient thickness to achieve required fire and smoke rating.

D. Place intumescent coating in sufficient coats to achieve rating required.

E. Remove dam material after firestopping material has cured.



3.7 CLEANING

A. Clean adjacent surfaces of firestopping materials.

3.8 PROTECTION OF FINISHED WORK

A. Protect adjacent surfaces from damage by material installation.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 05 48 - 1 VIBRATION AND SEISMIC CONTROLS

FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 48

VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Vibration isolators.

B. Related Sections:1. Section 23 05 29 - Hangers and Supports for HVAC Piping and Equipment: Product

requirements for pipe hangers and supports.

1.2 SUBMITTALS

A. Product Data: Submit schedule of vibration isolator type with location and load on each.Submit catalog information indicating, materials, dimensional data, pressure losses, andacoustical performance for standard sound attenuation products.

B. Manufacturer's Installation Instructions: Submit special procedures and setting dimensions.Indicate installation requirements maintaining integrity of sound isolation.

PART 2 PRODUCTS

2.1 VIBRATION ISOLATORS

A. Open Spring Isolators:1. Spring Isolators:

a. For Exterior and Humid Areas: Furnish hot dipped galvanized housings andneoprene coated springs.

b. Code: Color code springs for load carrying capacity.2. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with

working deflection between 0.3 and 0.6 of maximum deflection.3. Spring Mounts: Furnish with leveling devices, minimum 0.25 inch thick neoprene sound

pads, and zinc chromate plated hardware.4. Sound Pads: Size for minimum deflection of 0.05 inch; meet requirements for neoprene

pad isolators.

B. Restrained Spring Isolators:1. Spring Isolators:



working deflection bet




3. ween 0.3 and 0.6 of maximum deflection.4. Spring Mounts: Furnish with leveling devices, minimum 0.25 inch thick neoprene sound

pads, and zinc chromate plated hardware.5. Sound Pads: Size for minimum deflection of 0.05 inch; meet requirements for neoprene

pad isolators.6. Restraint: Furnish mounting frame and limit stops.

C. Closed Spring Isolators:1. Spring Isolators:


b. Code: Color code springs for load carrying capacity.2. Type: Closed spring mount with top and bottom housing separated with neoprene rubber

stabilizers.3. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with

working deflection between 0.3 and 0.6 of maximum deflection.4. Housings: Incorporate neoprene isolation pad meeting requirements for neoprene pad

isolators, and neoprene side stabilizers with minimum 0.25 inch clearance.

D. Restrained Closed Spring Isolators:1. Spring Isolators:


b. Code: Color code springs for load carrying capacity.2. Type: Closed spring mount with top and bottom housing separated with neoprene rubber

stabilizers.3. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with


isolators, and neoprene side stabilizers with minimum 0.25 inch clearance and limit stops.

E. Spring Hanger:1. Spring Isolators:




isolators.4. Misalignment: Capable of 20 degree hanger rod misalignment.

F. Neoprene Pad Isolators:1. Rubber or neoprene-waffle pads.

a. 30 durometer.b. Minimum 1/2 inch thick.c. Maximum loading 40 psi.d. Height of ribs: not to exceed 0.7 times width.

2. Configuration: 1/2 inch thick waffle pads bonded each side of 1/4 inch thick steel plate.




G. Rubber Mount or Hanger: Molded rubber designed for 0.5 inches deflection with threadedinsert.

H. Glass Fiber Pads: Neoprene jacketed pre-compressed molded glass fiber.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify equipment, ductwork and piping is installed before work in this section is started.

3.2 EXISTING WORK

A. Provide access to existing piping and ductwork and other installations remaining active andrequiring access.

B. Extend existing piping and ductwork installations using materials and methods compatiblewith existing installations.

3.3 INSTALLATION

A. Install isolation for motor driven equipment.

B. Adjust equipment level.

C. Install spring hangers without binding.

D. On closed spring isolators, adjust so side stabilizers are clear under normal operatingconditions.

E. Prior to making piping connections to equipment with operating weights substantiallydifferent from installed weights, block up equipment with temporary shims to final height.When full load is applied, adjust isolators to load to allow shim removal.

F. Support piping connections to isolated equipment resiliently to nearest flexible pipe connector.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 05 53 - 1 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 53

IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Nameplates.2. Tags.3. Stencils.4. Pipe markers.5. Ceiling tacks.6. Labels.

B. Related Sections:1. Section 09 90 00 - Painting and Coating: Execution requirements for painting specified

by this section.

1.2 REFERENCES

A. American Society of Mechanical Engineers:1. ASME A13.1 - Scheme for the Identification of Piping Systems.

1.3 SUBMITTALS

A. Product Data: Submit manufacturers catalog literature for each product required.

B. Shop Drawings: Submit list of wording, symbols, letter size, and color coding for mechanicalidentification and valve chart and schedule, including valve tag number, location, function,and valve manufacturer's name and model number.

C. Manufacturer's Installation Instructions: Indicate installation instructions, special procedures,and installation.

1.4 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

PART 2 PRODUCTS

2.1 NAMEPLATES

A. Product Description: Laminated three-layer plastic with engraved white letters on darkcontrasting background color.



2.2 TAGS

A. Metal Tags:1. Brass or Aluminum with stamped letters; tag size minimum 1-1/2 inches diameter with

finished edges.

2.3 STENCILS

A. Stencils: With clean cut symbols and letters of following size:1. Up to 2 inches Outside Diameter of Insulation or Pipe: 1/2 inch high letters.2. 2-1/2 to 6 inches Outside Diameter of Insulation or Pipe: 1- high letters.3. Over 6 inches Outside Diameter of Insulation or Pipe: 1-3/4 inches high letters.4. Ductwork: 1-3/4 inches high letters.

B. Stencil Paint: As specified in Section 09 90 00, semi-gloss enamel, colors and lettering sizeconforming to ASME A13.1.

2.4 PIPE MARKERS

A. Color and Lettering: Conform to ASME A13.1.

B. Plastic Pipe Markers:1. Factory fabricated, flexible, semi-rigid plastic, preformed to fit around pipe or pipe

covering. Larger sizes may have maximum sheet size with spring fastener.

C. Plastic Tape Pipe Markers:1. Flexible, vinyl film tape with pressure sensitive adhesive backing and printed markings.

2.5 CEILING TACKS

A. Description: Steel with 3/4 inch diameter color-coded head.

B. Color code as follows:1. HVAC equipment: Yellow.2. Fire dampers/smoke dampers: Red.3. Plumbing valves: Green.4. Heating/cooling valves: Blue.

2.6 LABELS

A. Description: Aluminum, size 1.9 x 0.75 inches, adhesive backed with printed identification.

PART 3 EXECUTION

3.1 PREPARATION

A. Degrease and clean surfaces to receive adhesive for identification materials.



B. Prepare surfaces in accordance with Section 09 90 00 for stencil painting.

3.2 INSTALLATION

A. Apply stencil painting in accordance with Section 09 90 00.

B. Install identifying devices after completion of coverings and painting.

C. Install plastic nameplates with corrosive-resistant mechanical fasteners, or adhesive.

D. Install labels with sufficient adhesive for permanent adhesion and seal with clear lacquer. Forunfinished canvas covering, apply paint primer before applying labels.

E. Install tags using corrosion resistant chain. Number tags consecutively by location.

F. Identify air handling units, pumps, heat transfer equipment, tanks, and water treatment deviceswith plastic nameplates. Identify in-line pumps and other small devices with tags.

G. Identify control panels and major control components outside panels with plastic nameplates.

H. Identify valves in main and branch piping with tags.

I. Identify air terminal units and radiator valves with numbered tags.

J. Tag automatic controls, instruments, and relays. Key to control schematic.

K. Identify ductwork with stenciled painting. Identify with air handling unit identificationnumber and area served. Locate identification at air handling unit, at each side of penetrationof structure or enclosure, and at each obstruction.

L. Provide ceiling tacks to locate valves or dampers above T-bar type panel ceilings. Locate incorner of panel closest to equipment.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 05 93 - 1 TESTING, ADJUSTING, AND BALANCING FOR HVAC

SECTION 23 05 93

TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Testing adjusting, and balancing of air systems.2. Measurement of final operating condition of HVAC systems.

1.2 REFERENCES

A. Associated Air Balance Council:1. AABC MN-1 - National Standards for Testing and Balancing Heating, Ventilating, and

Air Conditioning Systems.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers:1. ASHRAE 111 - Practices for Measurement, Testing, Adjusting and Balancing of

Building Heating, Ventilation, Air-Conditioning and Refrigeration Systems.

C. Natural Environmental Balancing Bureau:1. NEBB - Procedural Standards for Testing, Adjusting, and Balancing of Environmental

Systems.

1.3 SUBMITTALS

A. Test Reports: Indicate data on AABC MN-1 National Standards for Total System Balanceforms or NEBB Report forms.

B. Field Reports: Indicate deficiencies preventing proper testing, adjusting, and balancing ofsystems and equipment to achieve specified performance.

C. Submit draft copies of report for review prior to final acceptance of Project.

D. Furnish reports in soft cover, letter size, 3-ring binder manuals, complete with table ofcontents page and indexing tabs, with cover identification at front and side. Include set ofreduced drawings with air outlets and equipment identified to correspond with data sheets, andindicating thermostat locations.

1.4 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: Furnish final copy of testing, adjusting, and balancingreport inclusion in operating and maintenance manuals.



1.5 QUALIFICATIONS

A. Agency: Company specializing in testing, adjusting, and balancing of systems specified in thissection certified by AABC or NEBB or submit substitute qualifications to engineer for reviewand approval.

1.6 SEQUENCING

A. Sequence balancing between completion of systems tested and Date of SubstantialCompletion.

PART 2 PRODUCTS

Not Used.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify systems are complete and operable before commencing work. Verify the following:1. Systems are started and operating in safe and normal condition.2. Temperature control systems are installed complete and operable.3. Proper thermal overload protection is in place for electrical equipment.4. Final filters are clean and in place. If required, install temporary media in addition to final

filters.5. Duct systems are clean of debris.6. Fans are rotating correctly.7. Fire and volume dampers are in place and open.8. Air coil fins are cleaned and combed.9. Access doors are closed and duct end caps are in place.10. Air outlets are installed and connected.11. Duct system leakage is minimized.12. Hydronic systems are flushed, filled, and vented.13. Pumps are rotating correctly.14. Proper strainer baskets are clean and in place or in normal position.15. Service and balancing valves are open.

3.2 PREPARATION

B. Furnish instruments required for testing, adjusting, and balancing operations.

C. Make instruments available to Architect/Engineer to facilitate spot checks during testing.

3.3 INSTALLATION TOLERANCES

D. Air Handling Systems: Adjust to within plus or minus 10 percent of design.



E. Air Outlets and Inlets: Adjust total to within plus 10 percent and minus 5 percent of design tospace. Adjust outlets and inlets in space to within plus or minus 10 percent of design.

F. Hydronic Systems: Adjust to within plus or minus 10 percent of design.

3.4 ADJUSTING

G. Verify recorded data represents actual measured or observed conditions.

H. Permanently mark settings of valves, dampers, and other adjustment devices allowing settingsto be restored. Set and lock memory stops.

I. After adjustment, take measurements to verify balance has not been disrupted. If disrupted,verify correcting adjustments have been made.

J. Report defects and deficiencies noted during performance of services, preventing systembalance.

K. Leave systems in proper working order, replacing belt guards, closing access doors, closingdoors to electrical switch boxes, and restoring thermostats to specified settings.

L. At final inspection, recheck random selections of data recorded in report. Recheck points orareas as selected and witnessed by Owner.

M. Check and adjust systems approximately six months after final acceptance and submit report.

3.5 AIR SYSTEM PROCEDURE

N. Adjust air handling and distribution systems to obtain required or design supply, return, andexhaust air quantities.

O. Make air quantity measurements in main ducts by Pitot tube traverse of entire cross sectionalarea of duct.

P. Measure air quantities at air inlets and outlets.

Q. Adjust distribution system to obtain uniform space temperatures free from objectionabledrafts.

R. Use volume control devices to regulate air quantities only to extent adjustments do not createobjectionable air motion or sound levels. Effect volume control by using volume damperslocated in ducts.

S. Vary total system air quantities by adjustment of fan speeds. Provide sheave drive changes tovary fan speed. Vary branch air quantities by damper regulation.

T. Provide system schematic with required and actual air quantities recorded at each outlet orinlet.



U. Measure static air pressure conditions on air supply units, including filter and coil pressuredrops, and total pressure across fan. Make allowances for 50 percent loading of filters.

V. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for designconditions.

W. Measure temperature conditions across outside air, return air, and exhaust dampers to checkleakage.

X. At modulating damper locations, take measurements and balance at extreme conditions.Balance variable volume systems at maximum airflow rate, full cooling, and at minimumairflow rate, full heating.

3.6 SCHEDULES

Y. Equipment Requiring Testing, Adjusting, and Balancing:1. Air Handling Units.2. Condensing Units.3. Exhaust Fans.4. Air Inlets and Outlets.5. Outside Air Handling Units

Z. Report Forms1. Title Page:

a. Name of Testing, Adjusting, and Balancing Agencyb. Address of Testing, Adjusting, and Balancing Agencyc. Telephone and facsimile numbers of Testing, Adjusting, and Balancing Agencyd. Project namee. Project locationf. Project Architectg. Project Engineerh. Project Contractori. Project altitudej. Report date

2. Summary Comments:a. Design versus final performanceb. Notable characteristics of systemc. Description of systems operation sequenced. Summary of outdoor and exhaust flows to indicate building pressurizatione. Nomenclature used throughout reportf. Test conditions

3. Instrument List:a. Instrumentb. Manufacturerc. Model numberd. Serial numbere. Rangef. Calibration date

4. Electric Motors:



a. Manufacturerb. Model/Framec. HP/BHP and kWd. Phase, voltage, amperage; nameplate, actual, no loade. RPMf. Service factorg. Starter size, rating, heater elementsh. Sheave Make/Size/Bore

5. Air Moving Equipment:a. Locationb. Manufacturerc. Model numberd. Serial numbere. Arrangement/Class/Dischargef. Air flow, specified and actualg. Return air flow, specified and actualh. Outside air flow, specified and actuali. Total static pressure (total external), specified and actualj. Inlet pressurek. Discharge pressurel. Sheave Make/Size/Borem. Number of Belts/Make/Sizen. Fan RPM

6. Duct Traverse:a. System zone/branchb. Duct sizec. Aread. Design velocitye. Design air flowf. Test velocityg. Test air flowh. Duct static pressurei. Air temperaturej. Air correction factor

7. Duct Leak Test:a. Description of ductwork under testb. Duct design operating pressurec. Duct design test static pressured. Duct capacity, air flowe. Maximum allowable leakage duct capacity times leak factorf. Test apparatus

1) Blower2) Orifice, tube size3) Orifice size4) Calibrated

g. Test static pressureh. Test orifice differential pressurei. Leakage



8. Air Distribution Test Sheet:a. Air terminal numberb. Room number/locationc. Terminal typed. Terminal sizee. Area factorf. Design velocityg. Design air flowh. Test (final) velocityi. Test (final) air flowj. Percent of design air flow

9. Cooling Coil Data:a. Identification/numberb. Locationc. Serviced. Manufacturere. Air flow, design and actualf. Entering air DB temperature, design and actualg. Entering air WB temperature, design and actualh. Leaving air DB temperature, design and actuali. Leaving air WB temperature, design and actualj. Water flow, design and actualk. Water pressure drop, design and actuall. Entering water temperature, design and actualm. Leaving water temperature, design and actualn. Saturated suction temperature, design and actualo. Air pressure drop, design and actual

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 07 00 – 1 HVAC INSULATION

SECTION 23 07 00

HVAC INSULATION

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. HVAC piping insulation, jackets and accessories.2. HVAC equipment insulation, jackets and accessories.3. HVAC ductwork insulation, jackets, and accessories.

1.2 SUBMITTALS

A. Product Data: Submit product description, thermal characteristics and list of materials andthickness for each service, and location.

B. Manufacturer's Installation Instructions: Submit manufacturers published literature indicatingproper installation procedures.


A. Accept materials on site in original factory packaging, labeled with manufacturer'sidentification, including product density and thickness.

B. Protect insulation from weather and construction traffic, dirt, water, chemical, and damage, bystoring in original wrapping.


A. Install insulation only when ambient temperature and humidity conditions are within rangerecommended by manufacturer.

B. Maintain temperature before, during, and after installation for minimum period of 24 hours.

PART 2 PRODUCTS

2.1 MANUFACTURER

A. Manufacturers for Glass Fiber and Mineral Fiber Insulation Products:1. CertainTeed.2. Knauf.3. Johns Manville.4. Owens-Corning.5. Substitutions: Section 01 60 00 - Product Requirements.



B. Manufacturers for Closed Cell Elastomeric Insulation Products:1. Aeroflex. Aerocell.2. Armacell, LLC. Armaflex.3. Nomaco. K-flex.4. Substitutions: Section 01 60 00 - Product Requirements.

C. Manufacturers for Polyisocyanurate Foam Insulation Products:1. Dow Chemical Company.2. Substitutions: Section 01 60 00 - Product Requirements.

D. Manufacturers for Extruded Polystyrene Insulation Products:1. Dow Chemical Company.2. Substitutions: Section 01 60 00 - Product Requirements.

2.2 PIPE INSULATION

A. TYPE P-1: ASTM C547, molded glass fiber pipe insulation.1. Thermal Conductivity: 0.23 at 75 degrees F.2. Operating Temperature Range: 0 to 850 degrees F.

B. Type P-2: Type I, flexible, closed cell elastomeric insulation, tubular.1. Thermal Conductivity: 0.27 at 75 degrees F.2. Operating Temperature Range: Range: Minus 70 to 180 degrees F.

2.3 PIPE INSULATION JACKETS

A. Vapor Retarder Jacket:1. White Kraft paper with glass fiber yarn, bonded to aluminized film.2. Water Vapor Permeance: ASTM E96/E96M; 0.02 perms.

B. Aluminum Pipe Jacket:1. Thickness: .025 inch thick sheet.2. Finish: Smooth.3. Joining: Longitudinal slip joints and 2 inch laps.4. Fittings: 0.016 inch thick die shaped fitting covers with factory attached protective liner.5. Metal Jacket Bands: 1/2 inch wide 0.015 inch thick aluminum.

2.4 PIPE INSULATION ACCESSORIES

A. Vapor Retarder Lap Adhesive: Compatible with insulation.

B. Covering Adhesive Mastic: Compatible with insulation.

C. Piping 1-1/2 inches diameter and smaller: Galvanized steel insulation protection shield.

D. Piping 2 inches diameter and larger: Wood insulation saddle, hard maple. Inserts length: notless than 6 inches long, matching thickness and contour of adjoining insulation.



E. Closed Cell Elastomeric Insulation Pipe Hanger: Polyurethane insert with aluminum singlepiece construction with self-adhesive closure. Thickness to match pipe insulation.

F. Tie Wire: 0.048 inch stainless steel with twisted ends on maximum 12 inch centers.

G. Insulating Cement: hydraulic setting on mineral wool.

H. Adhesives: Compatible with insulation.

2.5 DUCTWORK INSULATION

A. TYPE D-1: Type III, flexible glass fiber, commercial grade with factory applied reinforcedaluminum foil jacket meeting, Type II.1. Thermal Conductivity: 0.27 at 75 degrees F.2. Maximum Operating Temperature: 250 degrees F.3. Density1.0 pound per cubic foot.

2.6 DUCTWORK INSULATION ACCESSORIES

A. Vapor Retarder Tape:1. Kraft paper reinforced with glass fiber yarn and bonded to aluminized film, with pressure

sensitive rubber based adhesive.

B. Vapor Retarder Lap Adhesive: Compatible with insulation.

C. Adhesive: Waterproof type.

D. Tie Wire: 0.048 inch stainless steel with twisted ends on maximum 12 inch centers.

E. Impale Anchors: Galvanized steel, 12 gage self-adhesive pad.

F. Adhesives: Compatible with insulation.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify piping and ductwork has been tested before applying insulation materials.

B. Verify surfaces are clean and dry, with foreign material removed.

3.2 INSTALLATION - PIPING SYSTEMS

A. Piping Exposed to View in Finished Spaces: Locate insulation and cover seams in least visiblelocations.

B. Continue insulation through penetrations of building assemblies or portions of assemblieshaving fire resistance rating of one hour or less. Provide intumescent firestopping when



continuing insulation through assembly. Finish at supports, protrusions, and interruptions. Refer to Section 07 84 00 for penetrations of assemblies with fire resistance rating greater than one hour.

C. Piping Systems Conveying Fluids Below Ambient Temperature:1. Insulate entire system including fittings, valves, unions, flanges, strainers, flexible

connections, and expansion joints.2. Furnish factory-applied or field-applied vapor retarder jackets. Secure factory-applied

jackets with pressure sensitive adhesive self-sealing longitudinal laps and butt strips.Secure field-applied jackets with outward clinch expanding staples and seal staplepenetrations with vapor retarder mastic.

3. Insulate fittings, joints, and valves with molded insulation of like material and thicknessas adjacent pipe. Finish with glass cloth and vapor retarder adhesive or PVC fittingcovers.

D. Inserts and Shields:1. Piping 1-1/2 inches Diameter and Smaller: Install galvanized steel shield between pipe

hanger and insulation.2. Piping 2 inches Diameter and Larger: Install insert between support shield and piping and

under finish jacket.a. Insert Configuration: Minimum 6 inches long, of thickness and contour matching

adjoining insulation; may be factory fabricated.b. Insert Material: Compression resistant insulating material suitable for planned

temperature range and service.3. Piping Supported by Roller Type Pipe Hangers: Install galvanized steel shield between

roller and inserts.

E. Insulation Terminating Points:1. Coil Branch Piping 1 inch and Smaller: Terminate hot water piping at union upstream of

the coil control valve.2. Chilled Water Coil Branch Piping: Insulate chilled water piping and associated

components up to coil connection.3. Condensate Piping: Insulate entire piping system and components to prevent

condensation.

F. Closed Cell Elastomeric Insulation:1. Push insulation on to piping.2. Miter joints at elbows.3. Seal seams and butt joints with manufacturer’s recommended adhesive.4. When application requires multiple layers, apply with joints staggered.5. Insulate fittings and valves with insulation of like material and thickness as adjacent pipe.

G. Piping in Crawlspace and Exterior to Building: Provide vapor retarder jacket. Insulate fittings,joints, and valves with insulation of like material and thickness as adjoining pipe, and finishwith glass mesh reinforced vapor retarder cement. Cover with aluminum jacket with seamslocated at 3 or 9 o’clock position on side of horizontal piping with overlap facing down toshed water or on bottom side of horizontal piping.



3.3 INSTALLATION - DUCTWORK SYSTEMS

A. Duct dimensions indicated on Drawings are finished inside dimensions.

B. Insulated ductwork conveying air below ambient temperature:1. Provide insulation with vapor retarder jackets.2. Finish with tape and vapor retarder jacket.3. Continue insulation through walls, sleeves, hangers, and other duct penetrations.4. Insulate entire system including fittings, joints, flanges, fire dampers, flexible

connections, and expansion joints.

C. External Glass Fiber Duct Insulation:1. Secure insulation with vapor retarder with wires and seal jacket joints with vapor retarder

adhesive or tape to match jacket.2. Secure insulation without vapor retarder with staples, tape, or wires.3. Install without sag on underside of ductwork. Use adhesive or mechanical fasteners

where necessary to prevent sagging. Lift ductwork off trapeze hangers and insert spacers.4. Seal vapor retarder penetrations by mechanical fasteners with vapor retarder adhesive.5. Stop and point insulation around access doors and damper operators to allow operation

without disturbing wrapping.

3.4 SCHEDULES

A. Cooling Services Piping Insulation Schedule:

PIPING SYSTEM INSULATION TYPE PIPE SIZE

INSULATION THICKNESS inches

Hydronic Water Supply and Return Piping

[P-1] 1-1/4 inches and smaller 1-1/2 inches inch and larger

1.5 2.0

Refrigerant Piping [P-2] All Sizes 1.0

B. Ductwork Insulation Schedule:

DUCTWORK SYSTEM INSULATION TYPE

INSULATION THICKNESS inches

Supply Ducts (externally insulated) [D-1] 2

Return Ducts (externally insulated) [D-1] 2

Outside Air Ducts (externally insulated) [D-1] 2



END OF SECTION 23 07 00


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 08 00 - 1 COMMISSIONING FOR HVAC

SECTION 23 08 00

COMMISSIONING OF HVAC

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. HVAC commissioning description.2. HVAC commissioning responsibilities.

B. Related Sections:1. Section 23 05 93 - Testing, Adjusting, and Balancing for HVAC: For

requirements and procedures concerning testing, adjusting, and balancing ofmechanical systems.

2. Section 23 33 00 - Air Duct Accessories: Product requirements for ductwork testholes.

1.2 REFERENCES

A. Associated Air Balance Council:1. AABC - ACG Commissioning Guideline.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers:1. ASHRAE Guideline 1 - The HVAC Commissioning Process.

C. National Environmental Balancing Bureau:1. NEBB - Procedural Standards for Building Systems Commissioning.

1.3 COMMISSIONING DESCRIPTION

A. HVAC commissioning process includes the following tasks:1. Testing and startup of HVAC equipment and systems.2. Equipment and system verification checks.3. Assistance in functional performance testing to verify testing and balancing, and

equipment and system performance.4. Provide qualified personnel to assist in commissioning tests, including seasonal

testing.5. Complete and endorse functional performance test checklists provided by

Commissioning Authority to assure equipment and systems are fully operationaland ready for functional performance testing.

6. Provide equipment, materials, and labor necessary to correct deficiencies foundduring commissioning process to fulfill contract and warranty requirements.

7. Provide operation and maintenance information and record drawings toCommissioning Authority for review verification and organization, prior todistribution.



8. Provide assistance to Commissioning Authority to develop, edit, and documentsystem operation descriptions.

9. Provide training for systems specified in this Section with coordination byCommissioning Authority.

B. Equipment and Systems to Be Commissioned:1. Piping systems.2. Ductwork.3. Split system air conditioning units.4. Outside Air handling units.5. Electric terminal heating equipment.6. Unit heaters.7. Fans.8. Automatic temperature control system.9. Testing, Adjusting and Balancing work.10. Domestic Hot Water Recirculating Pumps11. Lighting Controls

C. Perform seasonal function performance tests for the following equipment and systems:1. Outside Air Handling Units.2. Split system air conditioning units.

1.4 COMMISSIONING SUBMITTALS

A. Section 01 91 00 - Commissioning: Requirements for commissioning submittals.

B. Draft Forms: Submit draft of system verification forms and functional performance testchecklists.

C. Test Reports: Indicate data on system verification form for each piece of equipment andsystem as specified.

D. Field Reports: Indicate deficiencies preventing completion of equipment or systemverification checks equipment or system to achieve specified performance.


A. Execution and Closeout Requirements: Requirements for submittals.

B. Project Record Documents: Record revisions to equipment and system documentationnecessitated by commissioning.

C. Operation and Maintenance Data: Submit revisions to operation and maintenance manualswhen necessary revisions are discovered during commissioning.

1.6 COMMISSIONING RESPONSIBILITIES

A. Equipment or System Installer Commissioning Responsibilities:1. Attend commissioning meetings.



2. Ensure temperature controls installer performs assigned commissioningresponsibilities as specified below.

3. Ensure testing, adjusting, and balancing agency performs assignedcommissioning responsibilities as specified.

4. Provide instructions and demonstrations for Owner's personnel.5. Ensure subcontractors perform assigned commissioning responsibilities.6. Ensure participation of equipment manufacturers in appropriate startup, testing,

and training activities when required by individual equipment specifications.7. Develop startup and initial checkout plan using manufacturer’s startup

procedures and functional performance checklists for equipment and systems tobe commissioned.

8. During verification check and startup process, execute HVAC related portions ofchecklists for equipment and systems to be commissioned.

9. Perform and document completed startup and system operational checkoutprocedures, providing copy to Commissioning Authority.

10. Provide manufacturer’s representatives to execute starting of equipment. Ensurerepresentatives are available and present during agreed upon schedules and are inattendance for duration to complete tests, adjustments and problem-solving.

11. Coordinate with equipment manufacturers to determine specific requirements tomaintain validity of warranties.

12. Provide personnel to assist Commissioning Authority during equipment orsystem verification checks and functional performance tests.

13. Prior to functional performance tests, review test procedures to ensure feasibility,safety and equipment protection and provide necessary written alarm limits to beused during tests.

14. Prior to startup, inspect, check, and verify correct and complete installation ofequipment and system components for verification checks included incommissioning plan. When deficient or incomplete work is discovered, ensurecorrective action is taken and re-check until equipment or system is ready forstartup.

15. Provide factory supervised startup services for equipment and systems.Coordinate work with manufacturer and Commissioning Authority.

16. Perform verification checks and startup on equipment and systems as specified.17. Assist Commissioning Authority in performing functional performance tests on

equipment and systems as specified.18. Perform operation and maintenance training sessions scheduled by

Commissioning Authority.19. Conduct HVAC system orientation and inspection.

B. Temperature Controls Installer Commissioning Responsibilities:1. Attend commissioning meetings.2. Review design for ability of systems to be controlled including the following:

a. Confirm proper hardware requirements exists to perform functionalperformance testing.

b. Confirm proper safeties and interlocks are included in design.c. Confirm proper sizing of system control valves and actuators and control

valve operation will result capacity control identified in ContractDocuments.



d. Confirm proper sizing of system control dampers and actuators anddamper operation will result in proper damper positioning.

e. Confirm sensors selected are within device ranges.f. Review sequences of operation and obtain clarification from

Architect/Engineer.g. Indicate delineation of control between packaged controls and building

automation system, listing BAS monitor points and BAS adjustablecontrol points.

h. Provide written sequences of operation for packaged controlledequipment. Equipment manufacturers’ stock sequences may be included,when accompanied by additional narrative to reflect Project conditions.

3. Inspect, check, and confirm proper operation and performance of controlhardware and software provided in other HVAC sections.

4. Submit proposed procedures for performing automatic temperature controlsystem point-to-point checks to Commissioning Authority andArchitect/Engineer.

5. Inspect check and confirm correct installation and operation of automatictemperature control system input and output device operation through point-to-point checks.

6. Perform training sessions to instruct Owner's personnel in hardware operation,software operation, programming, and application in accordance withcommissioning plan.

7. Demonstrate system performance and operation to Commissioning Authorityduring functional performance tests including each mode of operation.

8. Provide control system technician to assist during Commissioning Authorityverification check and functional performance testing.

9. Provide control system technician to assist testing, adjusting, and balancingagency during performance of testing, adjusting, and balancing work.

10. Assist in performing operation and maintenance training sessions scheduled byCommissioning Authority.

C. Testing, Adjusting, and Balancing Agency Commissioning Responsibilities:1. Attend commissioning meetings.2. Participate in verification of testing, adjusting, and balancing report for

verification or diagnostic purposes. Repeat sample of 20 percent ofmeasurements contained in testing, adjusting, and balancing report as indicated incommissioning plan or as selected by Commissioning Authority.

3. Assist in performing operation and maintenance training sessions scheduled byCommissioning Authority.

1.7 COMMISSIONING MEETINGS

A. Attend initial commissioning meeting and progress commissioning meetings as required byCommissioning Authority.

1.8 SCHEDULING

A. Prepare schedule indicating anticipated start dates for the following:1. Piping system pressure testing.



2. Piping system flushing and cleaning.3. Ductwork cleaning.4. Ductwork pressure testing.5. Equipment and system startups.6. Automatic temperature control system checkout.7. Testing, adjusting, and balancing.8. HVAC system orientation and inspections.9. Operation and maintenance manual submittals.10. Training sessions.

B. Schedule seasonal tests of equipment and systems during peak weather conditions to observefull-load performance.

C. Schedule occupancy sensitive tests of equipment and systems during conditions of bothminimum and maximum occupancy or use.

1.9 COORDINATION

A. Notify Commissioning Authority minimum of 3 weeks in advance of the following:1. Scheduled equipment and system startups.2. Scheduled automatic temperature control system checkout.3. Scheduled start of testing, adjusting, and balancing work.

B. Coordinate programming of automatic temperature control system with construction andcommissioning schedules.

PART 2 PRODUCTS

Not Used.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install additional balancing dampers, access doors, test ports, and pressure and temperaturetaps as required for proper system testing by Commissioning Authority.

B. Place HVAC systems and equipment into full operation and continue operation during eachworking day of commissioning.

C. Install replacement sheaves and belts to obtain system performance, as requested byCommissioning Authority.

D. Install test holes in ductwork and plenums as requested by Commissioning Authority fortaking air measurements.

E. Prior to start of functional performance test, install replacement filters in equipment.



3.2 COMMISSIONING

A. Seasonal Sensitive Functional Performance Tests:1. Test heating equipment at winter design temperatures.2. Test cooling equipment at summer design temperatures.3. Participate in testing delayed beyond Final Completion to test performance at

peak seasonal conditions.

B. Be responsible to participate in initial and alternate peak season test of systems required todemonstrate performance.

C. Occupancy Sensitive Functional Performance Tests:1. Test equipment and systems affected by occupancy variations at minimum and

peak loads to observe system performance.2. Participate in testing delayed beyond Final Completion to test performance with

actual occupancy conditions.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 31 00 - 1 HVAC DUCTS

SECTION 23 31 00

HVAC DUCTS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Duct Materials.2. Insulated flexible ducts.3. Ductwork fabrication.

B. Related Sections:1. Section 23 33 00 - Air Duct Accessories: Product requirements for duct accessories for

placement by this section.

1.2 REFERENCES

A. ASTM International:1. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building

Materials.

B. National Fire Protection Association:1. NFPA 90A - Standard for the Installation of Air Conditioning and Ventilating Systems.

C. Sheet Metal and Air Conditioning Contractors:1. SMACNA - Fibrous Glass Duct Construction Standards.2. SMACNA - HVAC Air Duct Leakage Test Manual.3. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

D. Underwriters Laboratories Inc.:1. UL 181 - Factory-Made Air Ducts and Connectors.

1.3 PERFORMANCE REQUIREMENTS

A. Variation of duct configuration or sizes other than those of equivalent or lower loss coefficientis not permitted except by written permission. Size round ducts installed in place ofrectangular ducts in accordance with ASHRAE table of equivalent rectangular and roundducts.

1.4 SUBMITTALS

A. Shop Drawings: Submit duct fabrication drawings, drawn to scale not smaller than ¼ inchequals 1 foot, on drawing sheets same size as Contract Documents, indicating:1. Fabrication, assembly, and installation details, including plans, elevations, sections,

details of components, and attachments to other work.2. Duct layout, indicating pressure classifications and sizes in plan view. For exhaust duct

systems, indicate classification of materials handled as defined in this section.



3. Fittings.4. Reinforcing details and spacing.5. Seam and joint construction details.6. Penetrations through fire rated and other walls.7. Terminal unit, coil, and humidifier installations.8. Hangers and supports, including methods for building attachment, vibration isolation, and

duct attachment.

B. Test Reports: Indicate pressure tests performed. Include date, section tested, test pressure, andleakage rate, following SMACNA HVAC Air Duct Leakage Test Manual.


A. Project Record Documents: Record actual locations of ducts and duct fittings. Record changesin fitting location and type. Show additional fittings used.

1.6 QUALITY ASSURANCE

A. Perform Work in accordance with SMACNA - HVAC Duct Construction Standards - Metaland flexible.

B. Construct ductwork to NFPA 90A standards.


A. Do not install duct sealant when temperatures are less than those recommended by sealantmanufacturers.

B. Maintain temperatures during and after installation of duct sealant.



PART 2 PRODUCTS

2.1 DUCT MATERIALS

A. Galvanized Steel Ducts: galvanized steel sheet, lock-forming quality, having G90 zinccoating.

B. Fasteners: Rivets, bolts, or sheet metal screws.

C. Hanger Rod: ASTM A36/A36M; steel , galvanized; threaded both ends, threaded one end, orcontinuously threaded.



2.2 INSULATED FLEXIBLE DUCTS

A. Manufacturers:1. Flexmaster.2. Atco.3. Thermaflex.4. Substitutions: Section 01 60 00 - Product Requirements.

B. Product Description: Two ply vinyl film supported by helical wound spring steel wire;fiberglass insulation; aluminized vapor barrier film.1. Pressure Rating: 10 inches wg positive and 1.0 inches wg negative.2. Maximum Velocity: 4000 fpm.3. Temperature Range: -10 degrees F to 160 degrees F.4. Thermal Resistance: R-6.0.

2.3 SINGLE WALL SPIRAL ROUND DUCTS

A. Product Description: UL 181, Class 1, round spiral lockseam duct constructed of galvanizedsteel.

B. Construct duct with the following minimum gages:

Diameter Gauge 3 inches to 14 inches 26 15 inches to 26 inches 24 28 inches to 36 inches 22 38 inches to 50 inches 20 52 inches to 84 inches 18

C. Construct fittings with the following minimum gages:

Diameter Gauge 3 inches to 14 inches 24 15 inches to 26 inches 22 28 inches to 36 inches 20 38 inches to 50 inches 20 52 inches to 60 inches 18 62 inches to 84 inches 16

2.4 DUCTWORK FABRICATION

A. Fabricate and support rectangular ducts in accordance with SMACNA HVAC DuctConstruction Standards - Metal and Flexible and as indicated on Drawings. Provide ductmaterial, gages, reinforcing, and sealing for operating pressures indicated.



B. Fabricate and support round ducts with longitudinal seams in accordance with SMACNAHVAC Duct Construction Standards - Metal and Flexible (Round Duct ConstructionStandards), and as indicated on drawings. Provide duct material, gages, reinforcing, andsealing for operating pressures indicated.

C. Construct T's, bends, and elbows with minimum radius 1-1/2 times centerline duct width.Where not possible and where rectangular elbows are used, provide airfoil turning vanes.

D. Increase duct sizes gradually, not exceeding 15 degrees divergence wherever possible;maximum 30 degrees divergence upstream of equipment and 45 degrees convergencedownstream.

E. Fabricate continuously welded round and oval duct fittings two gages heavier than duct gagesindicated in SMACNA Standard. Minimum 4 inch cemented slip joint, brazed or electricwelded. Prime coat welded joints.

F. Provide standard 45-degree lateral wye takeoffs. When space does not allow 45-degree lateralwye takeoff, use 90-degree conical tee connections.

G. Seal joints between duct sections and duct seams with welds, gaskets, mastic adhesives,mastic plus embedded fabric systems, or tape.1. Sealants, Mastics and Tapes: Conform to UL 181A. Provide products bearing

appropriate UL 181A markings.2. Do not provide sealing products not bearing UL approval markings.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify sizes of equipment connections before fabricating transitions.

3.2 INSTALLATION

A. Install and seal ducts in accordance with SMACNA HVAC Duct Construction Standards -Metal and Flexible.

B. Ductwork shall be sealed as required by ASHRAE standard 90.1-2010 for Class B ductsystems.

C. During construction, install temporary closures of metal or taped polyethylene on openductwork to prevent construction dust from entering ductwork system.

D. Install duct hangers and supports in accordance with Section 23 05 29.

E. Use double nuts and lock washers on threaded rod supports.

F. Connect flexible ducts to metal ducts with adhesive plus drawband.



G. Exhaust Outlet Locations:1. Minimum Distance from Property Lines: 3 feet.2. Minimum Distance from Building Openings: 3 feet.3. Minimum Distance from Outside Air Intakes: 10 feet.

3.3 INTERFACE WITH OTHER PRODUCTS

A. Install openings in ductwork where required to accommodate thermometers and controllers.Install pitot tube openings for testing of systems. Install pitot tube complete with metal canwith spring device or screw to prevent air leakage. Where openings are provided in insulatedductwork, install insulation material inside metal ring.

B. Connect diffusers to low pressure ducts with 5 feet maximum length of flexible duct held inplace with strap or clamp.

C. Connect air outlets and inlets to ducts with five foot maximum length of flexible duct. Do notuse flexible duct to change direction.

3.4 CLEANING

A. Clean duct system and force air at high velocity through duct to remove accumulated dust. Toobtain sufficient air flow, clean one half of system completely before proceeding to other half.Protect equipment with potential to be harmed by excessive dirt with temporary filters, orbypass during cleaning.

3.5 TESTING

A. For ductwork with design pressure class of 1 inch wg or above, pressure test ductwork afterduct cleaning, but before duct insulation is applied or ductwork is concealed.1. Test in accordance with SMACNA HVAC Air Duct Leakage Test Manual.2. Maximum Allowable Leakage: 1/2% of design airflow as design static pressure.

3.6 SCHEDULES

A. Ductwork Material Schedule:

AIR SYSTEM MATERIAL Supply Galvanized Steel Return/Relief Galvanized Steel General Exhaust Galvanized Steel

B. Ductwork Pressure Class Schedule:

AIR SYSTEM PRESSURE CLASS Supply 2 inch wg regardless of velocity. Return and Relief 1 inch wg regardless of velocity.



General Exhaust 1 inch wg regardless of velocity.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 33 00 - 1 AIR DUCT ACCESSORIES

SECTION 23 33 00

AIR DUCT ACCESSORIES

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Backdraft dampers2. Combination fire/smoke dampers3. Fire dampers4. Duct access doors.5. Volume control dampers.6. Flexible duct connections.7. Duct test holes.

B. Related Sections:1. Section 23 09 23 - Direct-Digital Control System for HVAC: Execution and Product

requirements for connection and control of Combination Smoke and Fire Dampers forplacement by this section.

2. Section 23 31 00 - HVAC Ducts and Casings: Requirements for duct construction andpressure classifications.

1.2 REFERENCES

A. Air Movement and Control Association International, Inc.:1. AMCA 500 - Test Methods for Louvers, Dampers, and Shutters.

B. ASTM International:1. ASTM E1 - Standard Specification for ASTM Thermometers.

C. National Fire Protection Association:1. NFPA 90A - Standard for the Installation of Air Conditioning and Ventilating Systems.

D. Sheet Metal and Air Conditioning Contractors:1. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

1.3 SUBMITTALS

A. Shop Drawings: Indicate for shop fabricated assemblies including volume control dampers,duct access doors, and duct test holes.

B. Product Data: Submit data for shop fabricated assemblies and hardware used.

C. Product Data: Submit for the following. Include where applicable electrical characteristics andconnection requirements.1. Flexible duct connections.



2. Volume control dampers.3. Duct access doors.4. Duct test holes.


A. Project Record Documents: Record actual locations of access doors and test holes.


A. Protect dampers from damage to operating linkages and blades.

B. Delivery: Deliver materials to site in manufacturer's original, unopened containers andpackaging, with labels clearly indicating manufacturer and material.

C. Storage: Store materials in a dry area indoor, protected from damage.

D. Handling: Handle and lift dampers in accordance with manufacturer's instructions. Protectmaterials and finishes during handling and installation to prevent damage.



1.7 COORDINATION

A. Coordinate Work where appropriate with building control Work.

PART 2 PRODUCTS

2.1 BACK-DRAFT DAMPERS

A. Product Description: Multi-Blade, back-draft dampers: Parallel-action, gravity-balanced,Galvanized 16 gage thick steel, or extruded aluminum. Blades, maximum 6 inch width,with felt or flexible vinyl sealed edges. Blades linked together in rattle-free manner with90-degree stop, steel ball bearings, and plated steel pivot pin. Furnish dampers withadjustment device to permit setting for varying differential static pressure.

2.2 COMBINATION FIRE/SMOKE DAMPERS

A. Fabricate in accordance with NFPA 90A, UL 555, and UL 555S. Dampers shall be ratedand marked for use in dynamic systems.

B. Multiple-Blade Dampers: Fabricate with 16 gage galvanized steel frame and blades.Furnish oil-impregnated bronze or stainless steel sleeve bearings and plated steel axles,stainless steel jamb seals, 1/8 x 1/2 inch plated steel concealed linkage, stainless steelclosure spring, blade stops, and lock, and 1/2 inch actuator shaft.



C. Operators: UL listed and labeled spring return electric type suitable for 120 volts, singlephase, 60 Hz. Furnish end switches to indicate damper position. Locate damper operatoron exterior of duct and link to damper operating shaft.

D. Electro Thermal Link: Fusible link melting at 165 degrees F; 120 volts, single phase, 60Hz; UL listed and labeled.

2.3 FIRE DAMPERS

A. Fabricate in accordance with NFPA 90A and UL 555, and manufacturer’s condition oflisting. Dampers shall be rated and marked for use in dynamic systems.

B. Horizontal Dampers: Galvanized steel, 22 gage frame, stainless steel closure spring, andlightweight, heat retardant non-asbestos fabric blanket.

C. Curtain Type Dampers: Galvanized steel with interlocking blades. Furnish stainless steelclosure springs and latches for closure under airflow conditions. Configure with bladesout of air stream.

D. Multiple Blade Dampers: 16 gage galvanized steel frame and blades, oil-impregnatedbronze or stainless steel sleeve bearings and plated steel axles, 1/8 x 1/2 inch plated steelconcealed linkage, stainless steel closure spring, blade stops, and lock.

E. Fusible Links: UL 33, separate at 160 degrees F with adjustable link straps forcombination fire/balancing dampers.

2.4 DUCT ACCESS DOORS

A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal andFlexible.

B. Fabrication: Rigid and close fitting of galvanized steel with sealing gaskets and quickfastening locking devices. For insulated ductwork, furnish minimum 1 inch thickinsulation with sheet metal cover.1. Less Than 12 inches square, secure with sash locks.2. Up to 18 inches Square: Furnish two hinges and two sash locks.3. Up to 24 x 48 inches: Three hinges and two compression latches with outside and

inside handles.4. Larger Sizes: Furnish additional hinge.5. Access panels with sheet metal screw fasteners are not acceptable.

2.5 VOLUME CONTROL DAMPERS

A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal andFlexible, and as indicated on Drawings.

B. Splitter Dampers:1. Material: Same gage as duct to 24 inches size in both dimensions, and two gages heavier

for sizes over 24 inches.



2. Blade: Fabricate of double thickness sheet metal to streamline shape, secured withcontinuous hinge or rod.

3. Operator: Minimum 1/4 inch diameter rod in self aligning, universal joint action, flangedbushing with set screw.

C. Single Blade Dampers: Fabricate for duct sizes up to 6 x 30 inch.

D. Multi-Blade Damper: Fabricate of opposed blade pattern with maximum blade sizes 8 x 72inch. Assemble center and edge crimped blades in prime coated or galvanized frame channelwith suitable hardware.

E. End Bearings: Except in round ductwork 12 inches and smaller, furnish end bearings. Onmultiple blade dampers, furnish oil-impregnated nylon or sintered bronze bearings. Furnishclosed end bearings on ducts having pressure classification over 2 inches wg.

F. Quadrants:1. Furnish locking, indicating quadrant regulators on single and multi-blade dampers.2. On insulated ducts mount quadrant regulators on standoff mounting brackets, bases, or

adapters.3. Where rod lengths exceed 30 inches furnish regulator at both ends.

2.6 FLEXIBLE DUCT CONNECTIONS

A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal andFlexible, and as indicated on Drawings.

B. Connector: Fabric crimped into metal edging strip.1. Fabric: UL listed fire-retardant neoprene coated woven glass fiber fabric conforming to

NFPA 90A, minimum density 30 oz per sq yd.2. Net Fabric Width: Approximately 3 inches wide.

2.7 DUCT TEST HOLES

A. Permanent Test Holes: Factory fabricated, air tight flanged fittings with screw cap. Furnishextended neck fittings to clear insulation.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify ducts and equipment installation is ready for accessories.

B. Verify rated walls are ready for installation of combination fire/smoke dampers or firedampers.

C. Check location of air outlets and inlets and make necessary adjustments in position to conformto architectural features, symmetry, and lighting arrangement.



3.2 INSTALLATION.

A. Install in accordance with NFPA 90A, and follow SMACNA HVAC Duct ConstructionStandards - Metal and Flexible. Refer to Section 15810 for duct construction and pressureclass.

B. Install back-draft dampers on exhaust fans or exhaust ducts nearest to outside.

C. Install duct access doors for inspection and cleaning before and after filters, coils, fans,automatic dampers, at fire dampers, combination fire and smoke dampers. Installminimum 8 x 8 inch size for hand access, 18 x 18 inch size for shoulder access. Reviewlocations prior to fabrication.

D. Install temporary duct test holes required for testing and balancing purposes. Cut or drillin ducts. Cap with neat patches, neoprene plugs, threaded plugs, or threaded or twist-onmetal caps.

E. Install permanent duct test holes required for testing and balancing purposes.

F. Provide fire dampers, combination fire and smoke dampers, and smoke dampers atlocations as indicated on Drawings. Install with required perimeter mounting angles,sleeves, breakaway duct connections, corrosion resistant springs, bearings, bushings andhinges.

G. Install smoke dampers and combination smoke and fire dampers in accordance withNFPA 92A.

3.3 DEMONSTRATION

A. Demonstrate re-setting of fire dampers to Owner's representative.

B. Demonstrate operation of combination fire/smoke dampers to Owner’s representative.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 34 00 - 1 HVAC FANS

SECTION 23 34 00

HVAC FANS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Ceiling Cabinet Fan.

B. Related Sections:1. Section 23 05 13 - Common Motor Requirements for HVAC Equipment: Product

requirements for motors for placement by this section.2. Section 23 05 48 - Vibration and Seismic Controls for HVAC Piping and Equipment:

Product requirements for resilient mountings and snubbers for fans for placement by thissection.

3. Section 23 07 00 - HVAC Insulation: Product requirements for power ventilators forplacement by this section.

4. Section 23 31 00 - HVAC Ducts and Casings: Product requirements for hangers forplacement by this section.

5. Section 23 33 00 - Air Duct Accessories: Product requirements for duct accessories forplacement by this section.

6. Section 26 05 03 - Equipment Wiring Connections: Execution and product requirementsfor connecting equipment specified by this section.

1.2 REFERENCES

A. American Bearing Manufacturers Association:1. ABMA 9 - Load Ratings and Fatigue Life for Ball Bearings.2. ABMA 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. Air Movement and Control Association International, Inc.:1. AMCA 99 - Standards Handbook.2. AMCA 204 - Balance Quality and Vibration Levels for Fans.3. AMCA 210 - Laboratory Methods of Testing Fans for Aerodynamic Performance Rating.4. AMCA 300 - Reverberant Room Method for Sound Testing of Fans.5. AMCA 301 - Methods for Calculating Fan Sound Ratings from Laboratory Test Data.

C. American Refrigeration Institute:1. ARI 1060 - Air-to-Air Energy Recovery Ventilation Equipment Certification Equipment

Program.

D. ASTM International:1. ASTM E1996 - Standard Specification for Performance of Exterior Windows, Curtain

Walls, Doors and Impact Protective Systems Impacted by Windborne Debris inHurricanes.



E. National Electrical Manufacturers Association:1. NEMA MG 1 - Motors and Generators.2. NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

F. Underwriters Laboratories Inc.:1. UL 705 - Power Ventilators.

1.3 SUBMITTALS

A. Section 01 33 00 - Submittal Procedures: Submittal procedures.

B. Shop Drawings: Indicate size and configuration of fan assembly, mountings, weights,ductwork and accessory connections.

C. Product Data: Submit data on each type of fan and include accessories, fan curves withspecified operating point plotted, power, RPM, sound power levels for both fan inlet andoutlet at rated capacity, electrical characteristics and connection requirements.

D. Manufacturer's Installation Instructions: Submit fan manufacturer’s instructions.

E. Manufacturer's Certificate: Certify products meet or exceed specified requirements.


A. Section 01 70 00 - Execution and Closeout Requirements: Closeout procedures.

B. Operation and Maintenance Data: Submit instructions for lubrication, motor and drivereplacement, spare parts list, and wiring diagrams.


A. Performance Ratings: Conform to AMCA 210 and bear AMCA Certified Rating Seal.

B. UL Compliance: UL listed and labeled, designed, manufactured, and tested in accordance withUL 705.

C. Balance Quality: Conform to AMCA 204.

1.6 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section withminimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three yearsdocumented experience approved by manufacturer.

1.7 PRE-INSTALLATION MEETINGS

A. Section 01 30 00 - Administrative Requirements: Pre-installation meeting.




A. Section 01 60 00 - Product Requirements: Product storage and handling requirements.

B. Protect motors, shafts, and bearings from weather and construction dust.



1.10 WARRANTY

A. Section 01 70 00 - Execution and Closeout Requirements: Product warranties and productbonds.

1.11 MAINTENANCE SERVICE

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for maintenanceservice.

PART 2 PRODUCTS

2.1 Ceiling Cabinet Fan

A. Manufacturers:1. Loren Cook Company.2. Greenheck Corp3. Penn Ventilation4. Substitutions: Section 01 60 00 - Product Requirements.

B. Centrifugal Fan Unit: Direct driven with galvanized steel housing, resilient mounted motor,gravity backdraft damper in discharge opening, integral outlet duct collar.

C. Disconnect Switch: Cord and plug in housing or Fan mounted toggle switch for thermaloverload protected motor.

D. Grille: Aluminum with baked white enamel finish.

E. Wheel: Centrifugal forward curved type constructed of injection molded or polypropyleneresin.

F. Motor: Open drip proof type with permanently lubricated sealed bearings and thermaloverload protection.

G. Accessories: As shown on drawings.



PART 3 EXECUTION

3.1 EXAMINATION

A. Section 01 30 00 - Administrative Requirements: Coordination and project conditions.

B. Verify roof curbs are installed and dimensions are as instructed by manufacturer.

3.2 INSTALLATION

A. Secure roof fans stainless steel lag screws to roof curb.

B. Install backdraft dampers on inlet to exhaust fans gravity ventilators used in relief airapplications.

C. Provide backdraft dampers on outlet from cabinet and ceiling fans or as indicated onDrawings.

D. Install safety screen where inlet or outlet is exposed.

E. Pipe scroll drains to nearest floor drain.

F. Provide sheaves required for final air balance.

3.3 DEMONSTRATION

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for demonstrationand training.

B. Demonstrate fan operation and maintenance procedures.

3.4 PROTECTION OF FINISHED WORK

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for protectingfinished Work.

B. Do not operate fans for until ductwork is clean, filters in place, bearings lubricated, and fanhas been test run under observation.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 37 00 - 1 AIR OUTLETS AND INLETS

SECTION 23 37 00

AIR OUTLETS AND INLETS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:1. Diffusers.2. Registers3. Grilles.

B. Air Movement and Control Association International, Inc.:1. AMCA 500 - Test Methods for Louvers, Dampers, and Shutters.

C. American Society of Heating, Refrigerating and Air-Conditioning Engineers:1. ASHRAE 70 - Method of Testing for Rating the Performance of Air Outlets and Inlets.

D. Sheet Metal and Air Conditioning Contractors:1. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

1.2 SUBMITTALS

A. Product Data: Submit sizes, finish, and type of mounting. Submit schedule of outlets andinlets showing type, size, location, application, and noise level.

PART 2 PRODUCTS

2.1 RECTANGULAR CEILING DIFFUSERS

A. Manufacturers:1. Titus.2. Price.3. Metalaire.4. Substitutions: Section 01 60 00 - Product Requirements.

B. Type: Square, diffuser to discharge air in 360 degree pattern (or two-way where indicated).

C. Frame: Lay-in type. In plaster ceilings, furnish plaster frame and ceiling frame.

D. Fabrication: Aluminum with baked enamel white finish.

2.2 WALL SUPPLY REGISTER

A. Manufacturers:1. Titus.



2. Price.3. Metalaire.4. Substitutions: Section 01 60 00 - Product Requirements.

B. Type: Streamlined and individually adjustable blades, 1/2 inch minimum depth, 1/2 inchmaximum spacing with spring or other device to set blades, horizontal face, double deflection.

C. Frame: 1 inch margin with countersunk, tamper resistant, screw mounting and gasket.

D. Fabrication: aluminum with 20 gage minimum frame, or aluminum extrusions, with factorybaked enamel white finish color to be selected.

E. Damper: Integral, gang-operated opposed blade type with removable key operator, operablefrom face.

2.3 CEILING GRID CORE EXHAUST AND RETURN REGISTERS/GRILLES

A. Manufacturers:1. Titus.2. Price.3. Metalaire.4. Substitutions: Section 01 60 00 - Product Requirements.

B. Type: Fixed grilles of 1/2 x 1/2 x 1 inch louvers.

C. Fabrication: Aluminum with factory off-white enamel finish.

D. Frame: 1 inch margin with Channel lay-in frame for suspended grid ceilings.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify inlet and outlet locations.

B. Verify ceiling systems are ready for installation.

3.2 INSTALLATION

A. Install diffusers to ductwork with airtight connection.

B. Install balancing dampers on duct take-off to diffusers, grilles, and registers, whether or notdampers are furnished as part of diffuser, grille, and register assembly.

C. Paint visible portion of ductwork behind air outlets and inlets matte black. Refer to Section09 90 00.

D. Do not locate air registers, diffusers or grilles in floors of toilet or bathing rooms.



3.3 INTERFACE WITH OTHER PRODUCTS

A. Check location of outlets and inlets and make necessary adjustments in position to conform toarchitectural features, symmetry, and lighting arrangement.

END OF SECTION


Seashore Learning Center 15733 S. Padre Island Drive Project Number 1707 23 84 00 - 1 DEDICATED OUTDOOR AIR SYSTEM

Dedicated Outdoor Air System

Section 23 84 00

Part 1 – General

1.01 SYSTEM DESCRIPTION

The DOAS shall be provided with the capability to reheat air using recovered energy from the primary cooling coil or provide a primary cooling coil only. The DOAS shall be of a split system type.

The DOAS reheat system shall consist of a 10-ton modular outdoor unit, 6 port minimum BC (Branch Circuit) Controller, indoor unit with reheat coil, and network based controller. System shall be capable of automatically determining mode necessary to provide required air conditions with no interruption to system operation except for defrost operation. The system shall only consist of one indoor unit per outdoor unit.


A. The units shall be listed by Electrical Test Laboratories (ETL) and bear the ETL label.

B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).

C. The units shall be manufactured in a facility registered to ISO 9001 and ISO14001 which is a setof standards applying to environmental protection set by the International Standard Organization(ISO).

D. A full charge of R-410A for the condensing unit only shall be provided in the condensing unit.

E. System shall be composed of components which meet or exceed the 2010 Federal minimumefficiency requirements and the proposed ASHRAE 90.1 efficiency requirements for VRFsystems. Efficiency shall be published in accordance with the DOE alternative test procedure,which is based on the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Standards340/360, 1230 and ISO Standard 13256-1.

F. DELIVERY, STORAGE AND HANDLING

1. Unit shall be stored and handled according to the manufacturer’s recommendation.

Part 2 – Warranty

2.01 The units shall be covered by the manufacturer’s limited warranty for a period of five (5) years from date of installation.

In addition, the compressor shall have a manufacturer’s limited warranty for a period of seven (7) years from date of installation.



If, during this period, any part should fail to function properly due to defects in workmanship or material, it shall be replaced or repaired at the discretion of the manufacturer.

This warranty shall not include labor.

2.02 Manufacturer shall have a minimum of five years of HVAC experience in the U.S. market.

2.03 All manufacturer technical and service manuals must be readily available for download by any local contractor should emergency service be required. Registering and sign-in requirements which may delay emergency service reference are not allowed.

2.04 The system shall be installed by a contractor with extensive experience installing and service training for the dedicated outdoor air system. The mandatory contractor service and install training should be performed by the manufacturer.

Part 3 – Products

3.01 VRF OUTDOOR CONDENSING UNIT (HEAT PUMP)

A. General:

1. The outdoor units shall be equipped with multiple circuit boards that interface to thenetwork controls system and shall perform all functions necessary for operation. Eachoutdoor unit module shall be completely factory assembled, piped and wired and runtested at the factory.

2. Outdoor unit shall have a sound rating no higher than 60 dB(A). If an alternatemanufacturer is selected, any additional material, cost, and labor to meet published soundlevels shall be incurred by the contractor.

3. Both refrigerant lines from the outdoor unit to the BC (Branch Circuit) Controller (Singleor Main) shall be insulated in accordance with the installation manual.

4. The outdoor unit shall have an accumulator with refrigerant level sensors and controls.

5. The outdoor unit shall have a high pressure safety switch, over-current protection,crankcase heater and DC bus protection.

6. The outdoor unit shall have the ability to operate with a maximum height difference of 164feet. The greatest length is not to exceed 541 feet between outdoor unit and the indoorunits without the need for line size changes or traps.

7. The outdoor unit shall be capable of operating in heating mode down to -4°F ambienttemperature or cooling mode down to 23°F ambient temperature, without additional lowambient controls. If an alternate manufacturer is selected, any additional material, cost,and labor to meet low ambient operating condition and performance shall be incurred bythe contractor.



8. The outdoor unit shall not cease operation in any mode based solely on outdoor ambienttemperature.

9. The outdoor unit shall have a high efficiency oil separator plus additional logic controls toensure adequate oil volume in the compressor is maintained.

10. Unit must defrost all circuits simultaneously in order to resume full heating more quickly.Partial defrost which may extend “no or reduced heating” periods shall not be allowed.

B. Unit Cabinet:

1. The casing(s) shall be fabricated of galvanized steel, bonderized and finished. Unitscabinets shall be able to withstand 960 hours per ASTM B117 criteria for seacoastprotected models (–BS models)

C. Fan:

1. Each outdoor unit module shall be furnished with one or two direct drive, variable speedpropeller type fan(s). The fan shall be factory set for operation under 0 in. WG externalstatic pressure, but capable of normal operation under a maximum of 0.24 in. WG externalstatic pressure via dipswitch.

2. All fan motors shall have inherent protection, have permanently lubricated bearings, andbe completely variable speed.

3. All fan motors shall be mounted for quiet operation.

4. All fans shall be provided with a raised guard to prevent contact with moving parts.

5. The outdoor unit shall have vertical discharge airflow.

D. Refrigerant

1. R410A refrigerant shall be required for outdoor unit systems.

E. Coil:

1. The outdoor coil shall be of nonferrous construction with lanced or corrugated plate finson copper tubing.

2. The coil fins shall have a factory applied corrosion resistant blue-fin finish.

3. The coil shall be protected with an integral metal guard.

4. Refrigerant flow from the outdoor unit shall be controlled by means of an inverter drivencompressor.

5. The outdoor coil shall include 4 circuits with two position valves for each circuit, exceptfor the last stage.



F. Compressor:

1. Each outdoor unit module shall be equipped with one inverter driven scroll hermeticcompressor. Non inverter-driven compressors shall not be allowed.

2. A crankcase heater(s) shall be factory mounted on the compressor(s).

3. The outdoor unit compressor shall have an inverter to modulate capacity. The capacityshall be completely variable with a turndown of 18% of rated capacity.

4. The compressor will be equipped with an internal thermal overload.

5. The compressor shall be mounted to avoid the transmission of vibration.

G. Electrical:

1. The outdoor unit electrical power shall be 208/230 or 460 volts, 3-phase, 60 hertz.

2. The outdoor unit shall be capable of satisfactory operation within voltage limits of 187-228 volts (208V/60Hz), 207-253V (230V/60Hz) or 414-506V (460V/60Hz).

3. The outdoor unit shall be controlled by integral microprocessors.

4. The control circuit between the indoor units, BC Controller and the outdoor unit shall be24VDC completed using a 2-conductor, twisted pair shielded cable to provide totalintegration of the system.

3.02 BRANCH CIRCUIT (BC) CONTROLLERS FOR R2-SERIES SYSTEMS

A. General:

The BC (Branch Circuit) Controllers shall be specifically used with outdoor systems. These units shall be equipped with a circuit board that interfaces to the network controls system and shall perform all functions necessary for operation. The unit shall have a galvanized steel finish. The BC Controller shall be completely factory assembled, piped and wired. Each unit shall be run tested at the factory. This unit shall be mounted indoors, with access and service clearance provided for each controller. The DOAS BC Controller shall be connected to only one indoor unit, the DOAS indoor unit. The BC Controller shall be suitable for use in plenums in accordance with UL1995 ed 4.

B. BC Unit Cabinet:

1. The casing shall be fabricated of galvanized steel.

2. Each cabinet shall house a liquid-gas separator and multiple refrigeration control valves.

3. The unit shall house two tube-in-tube heat exchangers.

C. Refrigerant



1. R410A refrigerant shall be required.

D. Refrigerant Branches

1. All BC Controller refrigerant pipe connections shall be brazed or flared.

E. Refrigerant valves:

1. The unit shall be furnished with multiple branch circuits which can individuallyaccommodate up to 54,000 BTUH. Branches may be twinned to allow more than 54,000BTUH.

2. Each branch shall have multiple two-position valves to control refrigerant flow.

3. Service shut-off valves shall be field-provided/installed for each branch.

4. Linear electronic expansion valves shall be used to control the variable refrigerant flow.

F. Integral Drain Pan:

1. An integral resin drain pan and drain shall be provided.

G. Electrical:

1. The unit electrical power shall be 208/230 volts, 1 phase, 60 hertz.

2. The unit shall be capable of satisfactory operation within voltage limits of 187-228 volts(208V/60Hz) or 207-253V (230V/60Hz).

3. The BC Controller shall be controlled by integral microprocessors.

4. The control circuit between the indoor units and the outdoor unit shall be 24VDCcompleted using a 2-conductor, twisted pair shielded cable to provide total integration ofthe system.

3.03 100% OSA DUCTED INDOOR UNIT (Reheat Option)

A. General:

i. The indoor (Reheat Option) unit shall be a ducted indoor fan coil that mountswhere needed with a fixed rear return and a horizontal discharge supply, primaryand reheat coil, and three modulating linear expansion devices. The indoor unitshall be used with the outdoor unit and BC Controller to create a DOAS. Theindoor unit shall support individual control using network DDC controllers. Theindoor unit model shall feature external static pressure settings up 0.96 in. WG,depending on voltage. The unit shall be suitable for use in plenums in accordancewith UL1995 ed 4.

B. Indoor Unit.



a. The indoor unit shall be factory assembled, wired and run tested. Contained within theunit shall be all factory wiring, primary cooling coil, reheat coil, temperature andhumidity sensors, piping, electronic modulating linear expansion device, control circuitboard and fan motor. The unit shall have a self-diagnostic function, 3-minute time delaymechanism, and an auto restart function. Indoor unit and refrigerant pipes shall becharged with dehydrated air before shipment from the factory.

C. Unit Cabinet:

a. The cabinet shall be ducted on both the supply and return

b. The cabinet panel shall have provisions for a field installed filtered outside air intake.

D. Fan:

a. The indoor unit fan shall be an assembly with two Sirocco fan(s) direct driven by a singlemotor.

b. The indoor fan shall be statically and dynamically balanced to run on a motor withpermanently lubricated bearings.

c. The indoor unit shall have a ducted air outlet system and ducted return air system.

E. Filter:

a. Outside air shall be filtered by a field-supplied filter. Unit shall have sufficient externalstatic pressure to operate with a MERV-13 filter installed.

F. Coil:

a. The indoor coil shall be of nonferrous construction with smooth plate fins on coppertubing.

b. The tubing shall have inner grooves for high efficiency heat exchange.

c. All tube joints shall be brazed with phos-copper or silver alloy.

d. The coils shall be pressure tested at the factory.

e. A condensate pan and drain shall be provided under the coil.

f. A condensate lift mechanism shall be factory installed capable of providing up to 21-11/16” of lift.

g. All refrigerant lines to the PEFY indoor units shall be insulated in accordance with theinstallation manual.

G. Electrical:



a. The unit electrical power shall be 208/230 volts, 1-phase, 60 hertz.

b. The system shall be capable of satisfactory operation within voltage limits of 187-228volts (208V/60Hz) or 207-253 volts (230V/60Hz).

H. Controls:

a. This unit shall use controls provided by Mitsubishi Electric to perform functionsnecessary to operate the system.

Part 4-Operation

4.01 Dedicated Outside Air System with Reheat Capability

A. General:

The DOAS reheat system shall be rated at 87o F DB/80o F WB in cooling for both the outdoorunit and indoor unit entering air conditions. Heating rating point shall be 32o F DB/28oF WBfor the outdoor unit and 32o F DB indoor unit entering air conditions.

B. System operation parameters:

1. The system shall operate with intake air temperature ranging from -4o F WB up to 95o FWB.

5. The unit shall be capable of intake of unmixed or untreated -4o F WB airdirectly to the primary coil.

6. The unit shall be capable of providing active coil operation in coolingmode down to 50o F WB.

2. In a cooling condition, the system shall be capable of providing supply air fordownstream use within the following specifications at rated conditions

Minimum Leaving Air Condition Maximum Leaving Air Condition

Operation Type Degrees F, Dry

Bulb Degrees F, Wet

Bulb Degrees F, Dry

Bulb Degrees F, Wet

Bulb

Cooling Only, No Reheat 50 50 60 60

Cooling Mode with Reheat 63 51.5 (45% RH) 83 67.5 (45% RH)

1. Cooling Only, No reheat uses only primary cooling coil. Leaving air temperature can be



chosen between 50 and 60 deg F in one degree increments.

2. Cooling mode with reheat uses both primary cooling coil and reheat coil. Leaving airtemperature from reheat coil can be chosen between 63 and 83 deg F in one degree F dry bulbincrements along a line of 45% constant relative humidity.

3. In heating mode, the system shall be capable of providing 78o F DB supply air at ratedconditions.

Execution

Part 1- Installation A. General:

Rig and install in full accordance with manufacturer’s requirements, project drawings, andcontract documents. Refer to the manufacturer’s installation manual for full requirements.

B. Location:Locate indoor and outdoor units as indicated on drawings. Provide service clearance permanufacturer’s installation manual. Adjust and level outdoor units on support structure.

For climates that experience snowfall, mount the outdoor unit a minimum of 12” above the average snowfall line. In climates where this height requirement proves unfeasible, the outdoor units may be installed at the average snowfall line provided regular snow removal in the area surrounding the units keeps the snow line below the bottom of the units.

C. Components / Piping:Installing contractor shall provide and install all accessories and piping for a fully operational system. Refer to manufacturer’s installation manual for full instructions.

Traps, filter driers, and sight glasses are NOT to be installed on the refrigerant piping or condensate lines.

Standard ACR fittings rated for use with R410A are to be used for all connections. Proprietary manufacturer-specific appurtenances are not allowed.

Refrigerant pipe for CITY MULTI shall be made of phosphorus deoxidized copper, and has two types.

A. ACR “Annealed”: Soft copper pipe, can be easily bent with human's hand.B. ACR “Drawn Temper”: Hard copper pipe (Straight pipe), being stronger thanType-O pipe of the same radical thickness.

The maximum operation pressure of R410A air conditioner is 4.30 MPa [623psi] . The refrigerant piping should ensure the safety under the maximum operation pressure. Refer to recommend piping specifications in Mitsubishi Electric’s engineering manual. Pipes of radical thickness 0.7mm or less shall not be used.

Flare connection should follow dimensions provided in manufacturer’s installation manuals.



D. Insulation:Refrigerant lines, as well as any valves, shall be insulated end to end with ½” closed-cell pipe insulation for piping up to 1”in diameter, or ¾” for piping 1-1/8” and larger, with a thermal conductivity no greater than 0.27 BTU-in/hr sq.ft oF. If state or local codes require insulation other than that specified above, the greater insulation shall be used.

E. Electrical:Installing contractor shall coordinate electrical requirements and connections for all power feeds with electrical contractor. Refer to Division 26 (Master Format 2004) or Division Section 16 (Master Format 1995) for additional information.

F. Third Party Controls:Installing contractor shall coordinate all BAS/BMS control requirements and connections with controls contractor.

END OF SECTION 23 84 00

SECTION 23 05 29 HANGERS AND SUPPORTS FOR HVAC PIPING … · e Learning Center 15733 S. Padre...

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