SECTION 2305 17 SLEEVES AND GENERAL 1.1 SUMMARY

SECTION 2305 17 - SLEEVES AND SLEEVE SEALS FOR HVAC PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Sleeves. 2. Sleeve-seal systems. 3. Grout.

1.2 ACTION SUBMITTALS

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

PART 2 - PRODUCTS

2.1 SLEEVES

A. Cast-Iron Wall Pipes: Cast or fabricated of cast or ductile iron and equivalent to ductile-iron pressure pipe, with plain ends and integral waterstop unless otherwise indicated.

B. Galvanized-Steel Wall Pipes: ASTM A 53/A 53M, Schedule 40, with plain ends and welded steel collar: zinc coated.

C. Galvanized-Steel-Pipe Sleeves: ASTM A 53/A 53M, Type E, Grade B, Schedule 40, zinc coated, with plain ends.

D. PVC-Pipe Sleeves: ASTM D 1785, Schedule 40.

2.2 SLEEVE-SEAL SYSTEMS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Advance Products & Systems, Inc. 2. CALPICO. Inc. 3. Metraflex Company (The). 4. Pipeline Seal and Insulator, Inc. 5. Proco Products, Inc.

B. Description: Modular sealing-element unit, designed for field assembly, for filling annular space between piping and sleeve.

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1. Sealing Elements: EPDM-rubber interlocking links shaped to fit surface of pipe. Include type and number required for pipe material and size of pipe.

2. Pressure Plates: Carbon steel. 3. Connecting Bolts and Nuts: Carbon steel, with corrosion-resistant coating, of length

required to secure pressure plates to sealing elements.

2.3 GROUT

A. Standard: ASTM C 1 107lC 1 107M, Grade B, post-hardening and volume-adjusting, dry, hydraulic-cement grout.

B. Characteristics: Nonshrink; recommended for interior and exterior applications.

C. Design Mix: ,28-day compressive strength.

D. Packaging: Premixed and factory packaged.

PART 3 - EXECUTION

3.1 SLEEVE INSTALLATION

A. Install sleeves for piping passing through penetrations in floors, partitions, roofs, and walls.

B. For sleeves that will have sleeve-seal system installed, select sleeves of size large enough to provide annular clear space between piping and concrete slabs and walls.

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

C. Install sleeves in concrete floors, concrete roof slabs, and concrete walls as new slabs and walls are constructed.

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

a. Exception: Extend sleeves installed in floors of mechanical equipment areas or other wet areas above finished floor level.

2. Using grout, seal the space outside of sleeves in slabs and walls without sleeve-seal system.

D. Install sleeves for pipes passing through interior partitions.

1. Cut sleeves to length for mounting flush with both surfaces. 2. Install sleeves that are large enough to provide annular clear space between sleeve and

pipe or pipe insulation. 3. Seal annular space between sleeve and piping or piping insulation; use joint sealants

appropriate for size, depth, and location of joint. Comply with requirements for sealants specified in Section 079200 "Joint Sealants."

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E. Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors at pipe penetrations. Seal pipe penetrations with firestop materials. Comply with requirements for firestopping specified in Section 078413 "Penetration Firestopping."

3.2 SLEEVE-SEAL-SYSTEM INSTALLATION

A. Install sleeve-seal systems in sleeves in exterior concrete walls and slabs-on-grade at service piping entries into building.

B. Select type, size, and number of sealing elements required for piping material and size and for sleeve ID or hole size. Position piping in center of sleeve. Center piping in penetration, assemble sleeve-seal system components, and install in annular space between piping and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make a watertight seal.

3.3 SLEEVE AND SLEEVE-SEAL SCHEDULE

A. Use sleeves and sleeve seals for the following piping-penetration applications:

1. Concrete Slabs-on-Grade:

a. Piping Smaller Than : Galvanized-steel wall sleeves with sleeve-seal system.

1) Select sleeve size to allow for 1-inch annular clear space between piping and sleeve for installing sleeve-seal system.

END OF SECTION 230517

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SECTION 230529 - HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY


1. Metal pipe hangers and supports. 2. Trapeze pipe hangers. 3. Thermal-hanger shield inserts. 4. Fastener systems. 5. Equipment supports.

1.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design trapeze pipe hangers and equipment supports, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.

B. Structural Performance: Hangers and supports for HVAC piping and equipment shall withstand the effects of gravity loads and stresses within limits and under conditions indicated according to ASCEISEI 7.

1. Design supports for multiple pipes capable of supporting combined weight of supported systems, system contents, and test water.

2. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components.

3. Design seismic-restraint hangers and supports for piping and equipment.



PART 2 - PRODUCTS

2.1 METAL PIPE HANGERS AND SUPPORTS

A. Carbon-Steel Pipe Hangers and Supports:

1. Description: MSS SP-58, Types 1 through 58, factory-fabricated components. 2. Galvanized Metallic Coatings: Pregalvanized or hot dipped. 3. Nonmetallic Coatings: Plastic coating, jacket, or liner. 4. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion to

support bearing surface of piping.

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5. Hanger Rods: Continuous-thread rod, nuts, and washer made of carbon steel.

B. Stainless-Steel Pipe Hangers and Supports:

1. Description: MSS SP-58, Types 1 through 58, factory-fabricated components. 2. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion to

support bearing surface of piping. 3. Hanger Rods: Continuous-thread rod, nuts, and washer made of stainless steel.

C. Copper Pipe Hangers:

1. Description: MSS SP-58, Types 1 through 58, copper-coated-steel, factory-fabricated components.

2. Hanger Rods: Continuous-thread rod, nuts, and washer made of copper-coated steel.

2.2 TRAPEZE PIPE HANGERS

A. Description: MSS SP-69, Type 59, shop- or field-fabricated pipe-support assembly made from structural carbon-steel shapes with MSS SP-58 carbon-steel hanger rods, nuts, saddles, and U- bolts.

2.3 THERMAL-HANGER SHIELD INSERTS

A. Insulation-Insert Material for Cold Piping: ASTM C 591, Type VI, Grade 1 polyisocyanurate with 125-psig minimum compressive strength and vapor barrier.

B. Insulation-Insert Material for Hot Piping: ASTM C 59 1, Type VI, Grade 1 polyisocyanurate with 125-psig minimum compressive strength.

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

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

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

2.4 FASTENER SYSTEMS

A. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used.

B. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated steel anchors, for use in hardened portland cement concrete; with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used.

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230529 - 2 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

2.5 EQUIPMENT SUPPORTS

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

2.6 MISCELLANEOUS MATERIALS

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

B. Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and nonmetallic grout; suitable for interior and exterior applications.

1. Properties: Nonstaining, noncorrosive, and nongaseous. 2. Design Mix: 5000-psi, 28-day compressive strength.

PART 3 - EXECUTION

3.1 HANGER AND SUPPORT INSTALLATION

A. Metal Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers, supports, clamps, and attachments as required to properly support piping from the building structure.

B. Metal Trapeze Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for grouping of parallel runs of horizontal piping, and support together on field-fabricated trapeze pipe hangers.

1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or install intermediate supports for smaller diameter pipes as specified for individual pipe hangers.

2. Field fabricate from ASTM A 36/A 36M, carbon-steel shapes selected for loads being supported. Weld steel according to AWS D 1 . l/D 1.1M.

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

D. Fastener System Installation:

1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less than 4 inches thick in concrete after concrete is placed and completely cured. Use operators that are licensed by powder-actuated tool manufacturer. Install fasteners according to powder-actuated tool manufacturer's operating manual.

2. Install mechanical-expansion anchors in concrete after concrete is placed and completely cured. Install fasteners according to manufacturer's written instructions.

E. Install hangers and supports complete with necessary attachments, inserts, bolts, rods, nuts, washers, and other accessories.

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

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G. Install hangers and supports to allow controlled thermal and seismic movement of piping systems, to permit freedom of movement between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units.

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

I. Install building attachments within concrete slabs or attach to structural steel. Install additional attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-112 and larger and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten inserts to forms and install reinforcing bars through openings at top of inserts.

J. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses from movement will not be transmitted to connected equipment.

K. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed maximum pipe deflections allowed by ASME B3 1.9 for building services piping.

L. Insulated Piping:

1. Attach clamps and spacers to piping.

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

b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield insert with clamp sized to match OD of insert.

c. Do not exceed pipe stress limits allowed by ASME B31.9 for building services piping.

2. Install MSS SP-58, Type 39, protection saddles if insulation without vapor barrier is indicated. Fill interior voids with insulation that matches adjoining insulation.

a. Option: Thermal-hanger shield. inserts may be used. Include steel weight- distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.

3. Install MSS SP-58, Type 40, protective shields on cold piping with vapor barrier. Shields shall span an arc of 180 degrees.

a. Option: Thermal-hanger shield inserts may be used. Include steel weight- distribution plate for pipe NPS 4 and larger if pipe is installed on rollers.

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

a. NPS 114 to NPS 3-112: 12 inches long and 0.048 inch thick. b. NPS 4: 12 inches long and 0.06 inch thick.

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

3.2 EQUIPMENT SUPPORTS

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

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

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

3.3 METAL FABRICATIONS

A. Cut, drill, and fit miscellaneous metal fabrications for equipment supports.

B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be shop welded because of shipping size limitations.

C. Field Welding: Comply with AWS D l. l /Dl. 1M procedures for shielded, metal arc welding; appearance and quality of welds; and methods used in correcting welding work; and with the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. Finish welds at exposed connections so no roughness shows after finishing and so

contours of welded surfaces match adjacent contours.

3.4 ADJUSTING

A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve indicated slope of pipe.

B. Trim excess length of continuous-thread hanger and support rods to 1-112 inches.

3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces.

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

B. Touchup: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal are specified in Section 0991 13 "Exterior Painting"

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780.

3.6 HANGER AND SUPPORT SCHEDUL,E

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



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

C. Use hangers and supports with galvanized metallic coatings for piping and equipment that will not have field-applied finish.

D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in direct contact with copper tubing.

E. Use carbon-steel pipe hangers and supports and attachments for general service applications.

F. Use stainless-steel pipe hangers and stainless-steel or corrosion-resistant attachments for hostile environment applications.

G. Use copper-plated pipe hangers and copper attachments for copper piping and tubing.

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

I. Use thermal-hanger shield inserts for insulated piping and tubing.

J. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or insulated, stationary pipes NPS 112 to NPS 30.

2. Yoke-Type Pipe Clamps (MSS Type 2): For suspension of up to 1050 deg F, pipes NPS 4 to NPS 24, requiring up to 4 inches of insulation.

3. Carbon- or Alloy-Steel, Double-Bolt Pipe Clamps (MSS Type 3): For suspension of pipes NPS 314 to NPS 36, requiring clamp flexibility and up to 4 inches of insulation.

4. Adjustable, Steel Band Hangers (MSS Type 7): For suspension of noninsulated, stationary pipes NPS 112 to NPS 8.

5. U-Bolts (MSS Type 24): For support of heavy pipes NPS 112 to NPS 30. 6. Pipe Saddle Supports (MSS Type 36): For support of pipes NPS 4 to NPS 36, with steel-

pipe base stanchion support and cast-iron floor flange or carbon-steel plate. 7. Pipe Stanchion Saddles (MSS Type 37): For support of pipes NPS 4 to NPS 36, with

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

8. Single-Pipe Rolls (MSS Type 41): For suspension of pipes NPS 1 to NPS 30, from two rods if longitudinal movement caused by expansion and contraction might occur.

9. Complete Pipe Rolls (MSS Type 44): For support of pipes NPS 2 to NPS 42 if longitudinal movement caused by expansion and contraction might occur but vertical adjustment is not necessary.

K. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers NPS 314 to NPS 24.

2. Carbon- or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers NPS 314 to NPS 24 if longer ends are required for riser clamps.



L. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads. 2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations.

M. Building Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend pipe hangers from concrete ceiling.

2. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar-joist construction, to attach to top flange of structural shape.

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

4. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams. 5. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads

are considerable and rod sizes are large. 6. C-Clamps (MSS Type 23): For structural shapes. 7. Welded-Steel Brackets: For support of pipes from below, or for suspending from above

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

a. Light (MSS Type 31): 750 lb. b. Medium (MSS Type 32): 1500 lb. c. Heavy (MSS Type 33): 3000 lb.

8. Side-Beam Brackets (MSS Type 34): For sides of steel or wooden beams. 9. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required.

N. Saddles and Shields: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

I. Steel-Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with insulation that matches adjoining insulation.

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

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

0. Spring Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types:

1. Spring Cushions (MSS Type 48): For light loads if vertical movement does not exceed 1-114 inches.

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

3. Variable-Spring Base Supports (MSS Type 52): Preset to indicated load and limit variability factor to 25 percent to allow expansion and contraction of piping system from base support.

P. Comply with MSS SP-69 for trapeze pipe-hanger selections and applications that are not specified in piping system Sections.



Q. Use powder-actuated fasteners or mechanical-expansion anchors instead of building attachments where required in concrete construction.



230529 - 8 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

SECTION 230553 PIPING IDENTIFICATION

PART 1 GENERAL

1.0 1 SECTION INCLUDES A. Pipe Markers.

1.02 SYSTEM DESCRIPTION A. Color Coding and Nomenclature for Building Piping: Conform to ASME A13.1.

PART 2 PRODUCTS

2.0 1 MANUFACTURED UNITS A. Pipe Markers for Indoor Use: Roll-form pipe markers; media indicator with direction-of-flow

arrows on pressure-sensitive vinyl tape roll.

PART 3 EXECUTION

3.0 1 PREPARATION A. Degrease and clean surfaces to receive identification materials.

3.02 INSTALLATION A. All piping installed as a part of this contract shall have pipe markers installed on it. B. Install pipe markers in accordance with manufacturer's instructions. C. Install pipe markers at each tie-in connection, at minimum 20 feet intervals and on each side of

a wall or floor penetration, adjacent to each valve and fitting, within 5' of equipment connections, and at each side of penetrations of structure or enclosure. Lettering will be visible from the floor. For pipes 314"and smaller, permanent phenolic tags will be used. Insulated piping will be labeled as "non-asbestos." Schedule for banding and labeling of pipe and conduit will conform to ANSI A1 3.1.

D. Pipes to be marked: 1. Domestic Cold Water 2. Domestic Hot Water 3. Natural Gas 4. Propane Gas 5. Sanitary Sewer


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230553 - 1 PIPING IDENTIFICATION


SECTION 230593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY A. Section Includes:

1. Balancing Air Systems: a. Constant-volume air systems.

1.2 DEFINITIONS A. AABC: Associated Air Balance Council. B. NEBB: National Environmental Balancing Bureau. C. TAB: Testing, adjusting, and balancing. D. TABB: Testing, Adjusting, and Balancing Bureau. E. TAB Specialist: An entity engaged to perform TAB Work.

1.3 INFORMATIONAL SUBMITTALS A. Certified TAB reports.

1.4 QUALITY ASSURANCE A. TAB Contractor Qualifications: Engage a TAB entity certified by AABC NEBB or TABB.

1. TAB Technician: Employee of the TAB contractor and who is certified by AABC NEBB or TABB as a TAB technician.

B. Instrumentation Type, Quantity, Accuracy, and Calibration: As described in ASHRAE 11 1 , Section 5, "Instrumentation."

C. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 7.2.2 - "Air Balancing. "

D. ASHRAEIIESNA Compliance: Applicable requirements in ASHRAEIIESNA 90.1, Section 6.7.2.3 - "System Balancing."

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

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

conditions in systems' designs that may preclude proper TAB of systems and equipment. B. Examine systems for installed balancing devices, such as test ports, gage cocks, thermometer

wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are accessible.

C. Examine the approved submittals for HVAC systems and equipment. D. Examine design data including HVAC system descriptions, statements of design assumptions

for environmental conditions and systems' output, and statements of philosophies and assumptions about W A C system and equipment controls.

E. Examine ceiling plenums and underfloor air plenums used for supply, return, or relief air to verify that they meet the leakage class of connected ducts as specified in Section 2331 13 "Metal Ducts" and are properly separated from adjacent areas. Verify that penetrations in plenum walls are sealed and fire-stopped if required.

F. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed.

G. Examine HVAC equipment and filters and verify that bearings are greased, belts are aligned and tight, and equipment with functioning controls is ready for operation.

H. Examine heat-transfer coils for correct piping connections and for clean and straight fins. I. Examine operating safety interlocks and controls on HVAC equipment.

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J. Report deficiencies discovered before and during performance of TAB procedures. Observe and record system reactions to changes in conditions. Record default set points if different from indicated values.

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

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING A. Perform testing and balancing procedures on each system according to the procedures contained

in SMACNA's "HVAC Systems - Testing, Adjusting, and Balancing" and in this Section. 1. Comply with requirements in ASHRAE 62.1, Section 7.2.2 - "Air Balancing."

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum extent necessary for TAB procedures. 1. After testing and balancing, patch probe holes in ducts with same material and thickness

as used to construct ducts. 2. Install and join new insulation that matches removed materials. Restore insulation,

coverings, vapor barrier, and finish according to Section 230713 "Duct Insulation." C. Mark equipment and balancing devices, including damper-control positions, valve position

indicators, fan-speed-control levers, and similar controls and devices, with paint or other suitable, permanent identification material to show final settings.

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

GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended testing procedures. Crosscheck the summation of required outlet volumes with required fan volumes. Determine the best locations in main and branch ducts for accurate duct-airflow measurements. Check airflow patterns from the outdoor-air louvers and dampers and the return- and exhaust-air dampers through the supply-fan discharge and mixing dampers. Locate start-stop and disconnect switches, electrical interlocks, and motor starters. Verify that motor starters are equipped with properly sized thermal protection. Check dampers for proper position to achieve desired airflow path. Check for airflow blockages. Check condensate drains for proper connections and functioning. Check for proper sealing of air-handling-unit components. Verify that air duct system is sealed as specified in Section 2331 13 "Metal Ducts."

3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS A. Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by

fan manufacturer. 1. Measure total airflow.

a. Where sufficient space in ducts is unavailable for Pitot-tube traverse measurements, measure airflow at terminal outlets and inlets and calculate the total airflow .

2. Measure fan static pressures as follows to determine actual static pressure: a. Measure outlet static pressure as far downstream from the fan as practical and

upstream from restrictions in ducts such as elbows and transitions. b. Measure static pressure directly at the fan outlet or through the flexible connection. c. Measure inlet static pressure of single-inlet fans in the inlet duct as near the fan as

possible, upstream from the flexible connection, and downstream from duct restrictions.

d. Measure inlet static pressure of double-inlet fans through the wall of the plenum that houses the fan.

e. Report the cleanliness status of filters and the time static pressures are measured.

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3. Measure static pressures entering and leaving other devices, such as sound traps, heat- recovery equipment, and air washers, under final balanced conditions.

4. Comply with requirements in Sections for air-handling units for adjustment of fans, belts, and pulley sizes to achieve indicated air-handling-unit performance.

5 . Do not make fan-speed adjustments that result in motor overload. Consult equipment manufacturers about fan-speed safety factors. Modulate dampers and measure fan-motor amperage to ensure that no overload will occur. Measure amperage in full-cooling, full- heating, economizer, and any other operating mode to determine the maximum required brake horsepower.

B. Adjust volume dampers for main duct, submain ducts, and major branch ducts to indicated airflows within specified tolerances. 1. Measure airflow of submain and branch ducts.

a. Where sufficient space in submain and branch ducts is unavailable for Pitot-tube traverse measurements, measure aifflow at terminal outlets and inlets and calculate the total aifflow for that zone.

C. Adjust air outlets and inlets for each space to indicated aifflows within specified tolerances of indicated values. Make adjustments using branch volume dampers rather than extractors and the dampers at air terminals. 1. Adjust each outlet in same room or space to within specified tolerances of indicated

quantities without generating noise levels above the limitations prescribed by the Contract Documents.

2. Adjust patterns of adjustable outlets for proper distribution without drafts.

3.6 PROCEDURES FOR MOTORS A. Motors, 112 HP and Larger: Test at final balanced conditions and record the following data:

1. Manufacturer's name, model number, and serial number. 2. Motor horsepower rating. 3. Motor rpm. 4. Efficiency rating. 5. Nameplate and measured voltage, each phase. 6. Nameplate and measured amperage, each phase. 7. Starter thermal-protection-element rating.

B. Motors Driven by Variable-Frequency Controllers: Test for proper operation at speeds varying from minimum to maximum. Test the manual bypass of the controller to prove proper operation. Record observations including name of controller manufacturer, model number, serial number, and nameplate data.

3.7 PROCEDURES FOR CONDENSING UNITS A. Verify proper rotation of fans. B. Measure entering- and leaving-air temperatures. C. Record compressor data.

3.8 TOLERANCES A. Set HVAC system's air flow rates and water flow rates within the following tolerances:

1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus or minus 10 percent. 2. Air Outlets and Inlets: Plus or minus 10 percent. 3. Heating-Water Flow Rate: Plus or minus 10 percent. 4. Cooling-Water Flow Rate: Plus or minus 10 percent.

3.9 FINAL REPORT A. General: Prepare a certified written report; tabulate and divide the report into separate sections

for tested systems and balanced systems. 1. Include a certification sheet at the front of the report's binder, signed and sealed by the

certified testing and balancing engineer. 2. Include a list of instruments used for procedures, along with proof of calibration.

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B. Final Report Contents: Zn addition to certified field-report data, include the following: I . Fan curves. 2. Manufacturers' test data. 3. Field test reports prepared by system and equipment installers. 4. Other information relative to equipment performance; do not include Shop Drawings and

product data. C. General Report Data: In addition to form titles and entries, include the following data:

1. Title page. 2. Name and address of the TAB contractor. 3. Project name. 4. Project location. 5. Architect's name and address. 6. Engineer's name and address. 7. Contractor's name and address. 8. Report date. 9. Signature of TAB supervisor who certifies the report. 10. Table of Contents with the total number of pages defined for each section of the report.

Number each page in the report. 1 1. Summary of contents including the following:

a. Indicated versus final performance. b. Notable characteristics of systems. c. Description of system operation sequence if it varies from the Contract

Documents. 12. Nomenclature sheets for each item of equipment. 13. Data for terminal units, including manufacturer's name, type, size, and fittings. 14. Notes to explain why certain final data in the body of reports vary from indicated values. 15. Test conditions for fans and pump performance forms including the following:

a. Settings for outdoor-, return-, and exhaust-air dampers. b. Conditions of filters. c. Cooling coil, wet- and dry-bulb conditions. d. Face and bypass damper settings at coils. e. Fan drive settings including settings and percentage of maximum pitch diameter. f. Settings for supply-air, static-pressure controller. g. Other system operating conditions' that affect performance.

3.10 ADDITIONAL TESTS A. Seasonal Periods: If initial TAB procedures were not performed during near-peak summer and

winter conditions, perform additional TAB during near-peak summer and winter conditions.



230593 - 4 TESTING, ADJUSTING, AND

BALANCING FOR HVAC

SECTION 2307 13 DUCT INSULATION

PART 1 GENERAL

1.0 1 SECTION INCLUDES A. Duct insulation, rigid board.

1.02 SUBMITTALS A. See General and Special Conditions for submittal requirements and procedures. B. Product Data: Provide product description, thermal characteristics, list of materials and

thickness for each service, and locations.

1.03 DELIVERY, STORAGE, AND PROTECTION A. Accept materials on site in original factory packaging, labelled with manufacturer's

identification, including product density and thickness. B. Protect insulation from weather and construction traffic, dirt, water, chemical, and mechanical

damage, by storing in original wrapping.

PART 2 PRODUCTS

2.01 REQUIREMENTS FOR ALL PRODUCTS OF THIS SECTION A. Surface Burning Characteristics: Flame spreadsmoke developed index of 25/50, maximum,

when tested in accordance with ASTM E 84, NFPA 255, or UL 723.

2.03 DUCT LINER A. Duct liner shall be 1" thick, -24 'K' Value. Non-fiberglass, non-porus interior surface, with

flame spread rating less that 25, and smoke development rating of less than 50.

B Internal duct areas shall be completely covered with duct liner. Each ductwork section shall be covered with a single sheet per side of ductwork, scraps or pieces shall not be used. Longitudinal joints in corners shall be overlapping butt joints. Transverse joints shall be coated with adhesive at the shop prior to shipping the ductwork to the job site and at the time of installation the joints shall be recoated to adhere to one another. Metal nosing and longitudinal joint sealant shall be applied to the first four (4) sections of ductwork at the fan discharge.

C Acoustical lining shall be a single layer of the thickness scheduled with 90% adhesive coverage applied to the ductwork and the liner applied mat face up.

D Mechanically welded pins with push on metal heads shall be used on ducts larger than 12" x 12". Pins shall be copper or shall be as corrosion resistant as the G-90 coated galvanized steel. Spacing around the perimeter shall be 4" from longitudinal liner edges and at intervals not exceeding 12". Transversely the spacing shall be 3" from transverse joints and at intervals not exceeding 18".

E At all locations of branch fittings, the edges of the main duct liner and the start of branch duct liner shall be sealed with duct liner adhesive.

F All rips, tears, or other damaged liners shall be repaired by coating the damaged area with liner adhesive. Sections that are not repairable shall be scraped and refabricated.

G Ductwork with internal lining shall be protected during shipping and at the job site to prevent the liner from getting wet. Ductwork shall not be stood on end or lay directly on the floor of buildings which are not weathertight. In the event that the liner becomes wet it shall be dried in accordance with the manufacturer's instructions.


230713 - 1 DUCT INSULATION

2.04 EXTERNAL DUCT WRAP A. Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin.

Comply with ASTM C 553, Type I1 and ASTM C 1290, Type I1 with factory-applied vinyl jacket.

B Vinyl Jacket: White vinyl, with a permeance of 1.3 perms when tested according to ASTM E 96W 96M, Procedure A, and complying with NFPA 90A and NFPA 90B, noncombustible, and rated for use in return plenums.

PART 3 EXECUTION

3.0 1 EXAMINATION A. Verify that ducts have been pressure tested for leaks before applying insulation materials. Seal

all identified leaks. B. Verify that surfaces are clean, foreign material removed, and dry.

3.02 INSTALLATION A. Install in accordance with manufacturer's written instructions and in accordance with recognized

industry practices to ensure that insulation serves its intended purpose. B. Insulated ducts:

1. Provide insulation with vapor barrier jackets. 2. Finish with tape and vapor barrier jacket. 3. Continue insulation through walls, sleeves, hangers, and other duct penetrations unless

otherwise noted. 4. Insulate entire system including fittings, joints and flanges. 5. Install insulation material with smooth and even surfaces and on clean and dry surfaces.

Redo poorly fitted joints. Do not use mastic or joint sealer as filler for gapped joints and excessive voids resulting from poor workmanship.

6. Take adequate pre-cautions to assure that the duct insulation does not get wet. 7 . Do not insulate until duct leakage has been stopped or acceptable. 8. Provide neatly beveled edge at interruption of insulation. Coat bare edges of insulation

with mastic or sealant to prevent delamination. 9. Maintain integrity of vapor-barrier on ductwork insulation, and protect it to prevent

puncture and other damage. 10. Repair damaged sections of existing mechanical insulation, damaged during this

construction period. Use insulation of same thickness as existing insulation, install new jacket lapping and sealed over existing.

3.03 SCEWDULES A. Supply and return ductwork: Internally lined. B. Outdoor air intake and Exhaust air ductwork: Externally wrapped. C. Exposed spiral ductwork: Double-wall spiral with 1" factory insulation between walls. D. Where existing duct is removed and replaced, the intent is to match the existing ductwork

insulation system. END OF SECTION 2307 1 3

Fire Station #I 7 Addition and Training Center Renovations PWA201201

23071 3 - 2 DUCT INSULATION

SECTION 2307 19 - HVAC PIPING INSULATION

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes insulating the following HVAC piping systems: 1. Refrigerant suction and hot-gas piping, indoors and outdoors.

B. Related Sections:

1. Section 2307 13 "Duct Insulation." 2. Section 2307 16 "HVAC Equipment Insulation."



1.3 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

1.4 QUALITY ASSURANCE

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 index of 50 or less.

2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed index of 150 or less.

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 87 1.


230719 - 1 HVAC PIPING INSULATION

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. Flexible Elastomeric Insulation: Closed-cell, sponge- or expanded-rubber materials. Comply with ASTM C 534, Type I for tubular materials.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Aeroflex USA, Inc.; Aerocel. b. Armacell LLC; AP Armaflex. c. K-Flex USA; Insul-Lock, Insul-Tube. and K-FLEX LS.

F. Polyolefin: Unicellular, polyethylene thermal plastic insulation. Comply with ASTM C 534 or ASTM C 1427, Type I, Grade 1 for tubular materials and Type 11, Grade 1 for sheet materials.

1 . Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Armacell LLC; Tubolit. b. Nomaco Insulation; IMCOLOCK, IMCOSHEET. NOMALOCK, and

NOMAPLY.

2.2 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. Flexible Elastomeric and Polyolefin Adhesive: Comply with ME-A-24179A, Type 11, Class I.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. Aeroflex USA, Inc.; Aeroseal. b. Armacell LLC; Armaflex 520 Adhesive. c. Foster Brand, Specialty Construction Brands. Inc., a business of H. B. Fuller

Company: 85-75. d. K-Flex USA; R-373 Contact Adhesive.

2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."



2.3 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.

2.4 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.


23071 9 - 3 HVAC PIPING INSULATION

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 beyond damaged areas. Adhere, staple, and seal patches similar to butt joints.

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

I . Vibration-control devices. 2. Testing agency labels and stamps. 3. Nameplates and data plates. 4. Manholes. 5. Handholes. 6. Cleanouts.

2.5 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 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.

I . 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.

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.

Fire Station #17 Addition and Training Center Renovations PWA201201


E. Insulation Installation at Fire-Rated Wall and Partition Penetrations: Install insulation continuously through penetrations of fire-rated walls and partitions.

I . Comply with requirements in Section 078413 "Penetration Firestopping" for firestopping and fire-resistive joint sealers.

F. Insulation Installation at Floor Penetrations:

I . Pipe: Install insulation continuously through floor penetrations. 2. Seal penetrations through fire-rated assemblies. Comply with requirements in

Section 07841 3 "Penetration Firestopping."

2.6 GENERAL PIPE INSUL,ATION 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:

Install insulation over fittings, valves, strainers, flanges, unions, and other specialties with continuous thermal and vapor-retarder integrity unless otherwise indicated. 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. 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. 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. 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. 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. 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.

2.7 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.

B. Insulation Installation on Pipe Flanges:

1. Install 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 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.

C. Insulation Installation on Pipe Fittings and Elbows:

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.

D. Insulation Installation on Valves and Pipe Specialties:

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.

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



2.8 INSTALLATION OF POLYOLEFIN INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Seal split-tube longitudinal seams and end joints with manufacturer's recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

B. Insulation Installation on Pipe Flanges:

1. Install 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 polyolefin 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.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install mitered sections of polyolefin 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.

D. Insulation Installation on Valves and Pipe Specialties:

1. Install cut sections of polyolefin pipe and sheet 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. 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.

2.9 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.

2.10 FIELD QUALITY CONTROL

A. All insulation applications will be considered defective Work if sample inspection reveals noncompliance with requirements.



2.1 1 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.

2.12 INDOOR PIPING INSULATION SCHEDULE

A. Refrigerant Suction and Hot-Gas Flexible Tubing: Flexible elastomeric or Polyolefin, 1 inch thick.

2.13 OUTDOOR, ABOVEGROUND PIPING INSULATION SCHEDULE

A. Refrigerant Suction and Hot-Gas Piping: Insulation shall be[ one of] the following: 1. Flexible Elastomeric: 2 inches thick. 2. Polyolefin: 2 inches thick.

B. Refrigerant Suction and Hot-Gas Flexible Tubing: Insulation shall be one of the following:

1. Flexible Elastomeric: 2 inches thick. 2. Polyolefin: 2 inches thick.

END OF SECTION 2307 19



SECTION 23 1123 - FACILITY NATURAL-GAS PIPING

PART 1 - GENERAL

1.1 SUMMARY


1. Pipes, tubes, and fittings. 2. Piping specialties. 3. Piping and tubing joining materials. 4. Valves. 5. Pressure regulators.


A. Minimum Operating-Pressure Ratings:

1. Piping and Valves: 100 psig minimum unless otherwise indicated. 2. Service Regulators: 65 psig minimum unless otherwise indicated.

B. Natural-Gas System Pressure within Buildings: 0.5 psig or less.

C. Natural-Gas System Pressures within Buildings: Two pressure ranges. Primary pressure is more than 0.5 psig but not more than 2 psig, and is reduced to secondary pressure of 0.5 psig or less.

D. Delegated Design: Design restraints and anchors for natural-gas piping and equipment, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.



PART 2 - PRODUCTS

2.1 PIPES, TUBES, AND FITTINGS

A. Steel Pipe: ASTM A 53lA 53M, black steel, Schedule 40, Type E or S, Grade B.

1. Malleable-Iron Threaded Fittings: ASME B16.3, Class 150, standard pattern. 2. Wrought-Steel Welding Fittings: ASTM A 234lA 234M for butt welding and socket

welding.


231123 - 1 FACILITY NATURAL-GAS PI PING

3. Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint, and threaded ends.

4. Protective Coating for Underground Piping: Factory-applied, three-layer coating of epoxy, adhesive, and PE.

a. Joint Cover Kits: Epoxy paint, adhesive, and heat-shrink PE sleeves.

2.2 PIPING SPECIALTIES

A. Appliance Flexible Connectors:

Indoor, Fixed-Appliance Flexible Connectors: Comply with ANSI 221.24. Indoor, Movable-Appliance Flexible Connectors: Comply with ANSI 221.69. Outdoor, Appliance Flexible Connectors: Comply with ANSI 221.75. Corrugated stainless-steel tubing with polymer coating. Operating-Pressure Rating: 0.5 psig. End Fittings: Zinc-coated steel. Threaded Ends: Comply with ASME B 1.20.1. Maximum Length: 72 inches

B. Quick-Disconnect Devices: Comply with ANSI 221.41

1. Copper-alloy convenience outlet and matching plug connector. 2. Nitrile seals. 3. Hand operated with automatic shutoff when disconnected. 4. For indoor or outdoor applications. 5. Adjustable, retractable restraining cable.

C. Y-Pattern Strainers:

1. Body: ASTM A 126, Class B, cast iron with bolted cover and bottom drain connection. 2. End Connections: Threaded ends for NPS 2 and smaller. 3. Strainer Screen: 40-mesh startup strainer, and perforated stainless-steel basket with 50

percent free area. 4. CWP Rating: 125 psig.

D. Weatherproof Vent Cap: Cast- or malleable-iron increaser fitting with corrosion-resistant wire screen, with free area at least equal to cross-sectional area of connecting pipe and threaded-end connection.

2.3 JOINING MATERIALS

A. Joint Compound and Tape: Suitable for natural gas.

B. Welding Filler Metals: Comply with AWS D10.12/D10.12M for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.


231123 - 2 FACILITY NATURAL-GAS PIPING

C. Brazing Filler Metals: Alloy with melting point greater than 1000 deg F complying with AWS A5.81A5.8M. Brazing alloys containing more than 0.05 percent phosphorus are prohibited.

2.4 MANUAL GAS SHUTOFF VALVES

A. See "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles for where each valve type is applied in various services.

B. General Requirements for Metallic Valves, NPS 2 and Smaller: Comply with ASME B16.33.

1. CWP Rating: 125 psig. 2. Threaded Ends: Comply with ASME B 1.20.1. 3. Dryseal Threads on Flare Ends: Comply with ASME B 1.20.3. 4. Tamperproof Feature: Locking feature for valves indicated in "Underground Manual Gas

Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles.

5. Listing: Listed and labeled by an NRTL acceptable to authorities having jurisdiction for valves 1 inch and smaller.

6. Service Mark: Valves 1-114 inches to NPS 2 shall have initials "WOG" permanently marked on valve body.

C. One-Piece, Bronze Ball Valve with Bronze Trim: MSS SP-110.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Brasscraft Manufacturing Company; a Masco comvany. b. Conbraco Industries, Inc.; Avollo Div. c. Lyall, R. W. & Company, Inc. d. McDonald, A. Y. Mfg. Co. e. Perfection Corporation; a subsidiary of American Meter Company.

Body: Bronze, complying with ASTM B 584. Ball: Chrome-plated brass. Stem: Bronze; blowout proof. Seats: Reinforced TFE; blowout proof. Packing: Separate packnut with adjustable-stem packing threaded ends. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. CWP Rating: 600 psig. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to authorities having jurisdiction. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

D. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: MSS SP-110.




a. BrassCraft Manufacturing Company; a Masco comvany. b. Conbraco Industries, Inc.; Apollo Div. c. Lyall, R. W. & Companv. Inc. d. McDonald, A. Y. Mfg. Co. e. Perfection Corporation; a subsidiary of American Meter Company.

Body: Bronze, complying with ASTM B 584. Ball: Chrome-plated bronze. Stem: Bronze; blowout proof. Seats: Reinforced TFE; blowout proof. Packing: Threaded-body packnut design with adjustable-stem packing. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. CWP Rating: 600 psig. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to authorities having jurisdiction. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

E. Two-Piece, Regular-Port Bronze Ball Valves with Bronze Trim: MSS SP-110.


a. BrassCraft Manufacturing Company; a Masco company. b. Conbraco Industries, Inc.; Apollo Div. c. Lyall, R. W. & Company, Inc. d. McDonald, A. Y. Mfg. Co. e. Perfection Corporation; a subsidiary of American Meter Companv.

Body: Bronze, complying with ASTM B 584. Ball: Chrome-plated bronze. Stem: Bronze; blowout proof. Seats: Reinforced TFE. Packing: Threaded-body packnut design with adjustable-stem packing. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. CWP Rating: 600 psig. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to authorities having jurisdiction. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

F. Bronze Plug Valves: MSS SP-78.




a. Lee Brass Company. b. McDonald, A. Y. Mfg. Co.

2. Body: Bronze, complying with ASTM B 584. 3. Plug: Bronze. 4. Ends: Threaded, socket, as indicated in "Underground Manual Gas Shutoff Valve

Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 5. Operator: Square head or lug type with tamperproof feature where indicated. 6. Pressure Class: 125 psig. 7. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to

authorities having jurisdiction. 8. Service: Suitable for natural-gas service with "WOG" indicated on valve body.

G. Valve Boxes:

1. Cast-iron, two-section box. 2. Top section with cover with "GAS" lettering. 3. Bottom section with base to fit over valve and barrel a minimum of 5 inches in diameter. 4. Adjustable cast-iron extensions of length required for depth of bury. 5. Include tee-handle, steel operating wrench with socket end fitting valve nut or flat head,

and with stem of length required to operate valve.

2.5 MOTORIZED GAS VALVES

A. Electrically Operated Valves: Comply with UL 429.


a. ASCO Power Technologies, LP; Division of Emerson. b. Dungs, Karl, Inc. c. Eclipse Combustion. Inc. d. Goven Valve Corn.; Tvco Environmental Systems. e. Magnatrol Valve Corporation. f. Parker Hannifin Corporation; Climate & Industrial Controls Group; Skinner Valve

Div. - g. Watts Regulator Co.; Division of Watts Water Technolonies. Inc.

Pilot operated. Body: Brass or aluminum. Seats and Disc: Nitrile rubber. Springs and Valve Trim: Stainless steel. 120-V ac, 60 Hz, Class B, continuous-duty molded coil, and replaceable. NEMA ICS 6, Type 4, coil enclosure. Normally closed. Visual position indicator.



2.6 PRESSURE REGULATORS

A. General Requirements:

1. Single stage and suitable for natural gas. 2. S tee1 jacket and corrosion-resistant components. 3. Elevation compensator. 4. End Connections: Threaded for regulators NPS 2 and smaller.

B. Line Pressure Regulators: Comply with ANSI 221.80.


a. Actaris. b. American Meter Company. c. Eclipse Combustion. Inc. d. Fisher Control Valves and Regulators; Division of Emerson Process Management. e. Invensys. f. Maxitrol Company. g. Richards Industries; Jordan Valve Div.

Body and Diaphragm Case: Cast iron or die-cast aluminum. Springs: Zinc-plated steel; interchangeable. Diaphragm Plate: Zinc-plated steel. Seat Disc: Nitrile rubber resistant to gas impurities, abrasion, and deformation at the valve port. Orifice: Aluminum; interchangeable. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. Single-port, self-contained regulator with orifice no larger than required at maximum pressure inlet, and no pressure sensing piping external to the regulator. Pressure regulator shall maintain discharge pressure setting downstream, and not exceed 150 percent of design discharge pressure at shutoff. Overpressure Protection Device: Factory mounted on pressure regulator. Atmospheric Vent: Factory- or field-installed, stainless-steel screen in opening if not connected to vent piping. Maximum Inlet Pressure: 2 psig.

C. Appliance Pressure Regulators: Comply with ANSI 221.18.


a. Canadian Meter Company Inc. b. Eaton Corporation; Controls Div. c. Harper Wyman Co. d. Maxitrol Company. e. SCP, Inc.



Body and Diaphragm Case: Die-cast aluminum. Springs: Zinc-plated steel; interchangeable. Diaphragm Plate: Zinc-plated steel. Seat Disc: Nitrile rubber. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. Factory-Applied Finish: Minimum three-layer polyester and polyurethane paint finish. Regulator may include vent limiting device, instead of vent connection, if approved by authorities having jurisdiction. Maximum Inlet Pressure: 1 psig.

2.7 DIELECTRIC UNIONS

A. Dielectric Unions:


Capitol Manufacturing Company. Central Plastics Company. Hart Industries International, Inc. Jomar International Ltd. Matco-Norca, Inc. McDonald, A. Y. Mfg. Co. Watts Regulator Co.; a division of Watts Water Technologies, Inc. Wilkins; a Zurn company.

2. Description:

a. Standard: ASSE 1079. b. Pressure Rating: 125 psig minimum at 180 deg F. c. End Connections: Solder-joint copper alloy and threaded ferrous.

2.8 LABELING AND IDENTIFYING

A. Detectable Warning Tape: Acid- and alkali-resistant, PE film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches wide and 4 mils thick, continuously inscribed with a description of utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches deep; colored yellow.

PART 3 - EXECUTION

3.1 OUTDOOR PIPING INSTALLATION

A. Comply with the International Fuel Gas Code for installation and purging of natural-gas piping.



B. Install underground, natural-gas piping buried at least 36 inches below finished grade. Comply with requirements in Section 3 12000 "Earth Moving" for excavating, trenching, and backfilling.

1. If natural-gas piping is installed less than 36 inches below finished grade, install it in containment conduit.

C. Steel Piping with Protective Coating:

1. Apply joint cover kits to pipe after joining to cover, seal, and protect joints. 2. Repair damage to PE coating on pipe as recommended in writing by protective coating

manufacturer. 3. Replace pipe having damaged PE coating with new pipe.

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

E. Install pressure gage downstream from each service regulator. Pressure gages are specified in Section 2305 19 "Meters and Gages for HVAC Piping."

3.2 INDOOR PIPING INSTALLATION

A. Comply with the International Fuel Gas Code for installation and purging of natural-gas piping.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Indicated locations and arrangements are used to size pipe and calculate friction loss, expansion, and other design considerations. Install piping as indicated unless deviations to layout are approved on Coordination Drawings.

C. Arrange for pipe spaces, chases, slots, sleeves, and openings in building structure during progress of construction, to allow for mechanical installations.

D. Install piping in concealed locations unless otherwise indicated and except in equipment rooms and service areas.

E. 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.

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

G. Locate valves for easy access.

H. Install natural-gas piping at uniform grade of 2 percent down toward drip and sediment traps.

I. Install piping free of sags and bends.

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

K. Verify final equipment locations for roughing-in.

L. Comply with requirements in Sections specifying gas-fired appliances and equipment for roughing-in requirements.

Fire Station # I 7 Addition and Training Center Renovations 231 123 - 8 PWA201201 FACILITY NATURAL-GAS PIPING

M. Drips and Sediment Traps: Install drips at points where condensate may collect, including service-meter outlets. Locate where accessible to permit cleaning and emptying. Do not install where condensate is subject to freezing.

1. Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped. Use nipple a minimum length of 3 pipe diameters, but not less than 3 inches long and same size as connected pipe. Install with space below bottom of drip to remove plug or cap.

N. Extend relief vent connections for service regulators, line regulators, and overpressure protection devices to outdoors and terminate with weatherproof vent cap.

0. Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade or floors, and in floor channels unless indicated to be exposed to view.

P. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side down.

Q. Connect branch piping from top or side of horizontal piping.

R. Install unions in pipes NPS 2 and smaller, adjacent to each valve, at final connection to each piece of equipment.

S. Do not use natural-gas piping as grounding electrode.

T. Install strainer on inlet of each line-pressure regulator and automatic or electrically operated valve.

U. Install pressure gage downstream from each line regulator. Pressure gages are specified in Section 2305 19 "Meters and Gages for HVAC 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 W A C 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 2305 18 "Escutcheons for W A C Piping. "

3.3 VALVE INSTALLATION

A. Install manual gas shutoff valve for each gas appliance ahead of corrugated stainless-steel tubing or copper connector.

B. Install underground valves with valve boxes.

C. Install regulators and overpressure protection devices with maintenance access space adequate for servicing and testing.


231 123 - 9 FACILITY NATURAL-GAS PIPING

D. Install earthquake valves aboveground outside buildings according to listing.

E. Install anode for metallic valves in underground PE piping.

3.4 PIPING JOINT CONSTRUCTION

A. Ream ends of pipes and tubes and remove burrs.

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

C. Threaded Joints:

1. Thread pipe with tapered pipe threads complying with ASME B 1.20.1. 2. Cut threads full and clean using sharp dies. 3. Ream threaded pipe ends to remove burrs and restore full inside diameter of pipe. 4. Apply appropriate tape or thread compound to external pipe threads unless dryseal

threading is specified. 5. 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. Welded Joints:

1. Construct joints according to AWS D10.12/D10.12M, using qualified processes and welding operators.

2. Bevel plain ends of steel pipe. 3. Patch factory-applied protective coating as recommended by manufacturer at field welds

and where damage to coating occurs during construction.

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

F. Flared Joints: Cut tubing with roll cutting tool. Flare tube end with tool to result in flare dimensions complying with SAE J513. Tighten finger tight, then use wrench. Do not overtighten.

G. PE Piping Heat-Fusion Joints: Clean and dry joining surfaces by wiping with clean cloth or paper towels. Join according to ASTM D 2657.

1. Plain-End Pipe and Fittings: Use butt fusion. 2. Plain-End Pipe and Socket Fittings: Use socket fusion.


A. Install seismic restraints on piping. Comply with requirements for seismic-restraint devices specified in Section 230548 "Vibration and Seismic Controls for W A C Piping and Equipment. "

B. Comply with requirements for pipe hangers and supports specified in Section 230529 "Hangers and Supports for W A C Piping and Equipment."

Fire Station # I7 Addition and Training Center Renovations 231123- 10 PWA201201 FACILITY NATURAL-GAS PIPING

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

1. NPS 1 and Smaller: Maximum span, 96 inches; minimum rod size, 318 inch. 2. NPS 1-114: Maximum span, 108 inches; minimum rod size, 318 inch. 3. NPS 1-112 and NPS 2: Maximum span, 108 inches; minimum rod size, 318 inch.

D. Install hangers for horizontal, corrugated stainless-steel tubing with the following maximum spacing and minimum rod sizes:

1. NPS 318: Maximum span, 48 inches; minimum rod size, 318 inch. 2. NPS 112: Maximum span, 72 inches; minimum rod size, 318 inch. 3. NPS 314 and Larger: Maximum span, 96 inches; minimum rod size, 318 inch.

3.6 CONNECTIONS

A. Connect to utility's gas main according to utility's procedures and requirements.

B. Install natural-gas piping electrically continuous, and bonded to gas appliance equipment grounding conductor of the circuit powering the appliance according to NFPA 70.

C. Install piping adjacent to appliances to allow service and maintenance of appliances.

D. Connect piping to appliances using manual gas shutoff valves and unions. Install valve within 72 inches of each gas-fired appliance and equipment. Install union between valve and appliances or equipment.

E. Sediment Traps: Install tee fitting with capped nipple in bottom to form drip, as close as practical to inlet of each appliance.


A. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment" for piping and valve identification.

B. Install detectable warning tape directly above gas piping, 12 inches below finished grade, except 6 inches below subgrade under pavements and slabs.


A. Test, inspect, and purge natural gas according to the International Fuel Gas Code and authorities having jurisdiction.

B. Natural-gas piping will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

Fire Station #I7 Addition and Training Center Renovations PWA201201

231123- 11 FACILITY NATURAL-GAS PIPING

3.9 OUTDOOR PIPING SCHEDULE

A. Underground natural-gas piping shall be the following:

1. PE pipe and fittings joined by heat fusion; service-line risers with tracer wire terminated in an accessible location.

B. Aboveground natural-gas piping shall be the following:

1. Steel pipe with malleable-iron fittings and threaded joints.

3.10 INDOOR PIPING SCHEDULE

A. Aboveground, branch piping NPS 2 and smaller shall be the following: 1. Steel pipe with malleable-iron fittings and threaded joints.

B. Aboveground, distribution piping shall be the following:

1. Steel pipe with malleable-iron fittings and threaded joints.

3.11 UNDERGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE

A. Connections to Existing Gas Piping: Use valve and fitting assemblies made for tapping utility's gas mains and listed by an NRTL.

B. Underground: PE valves.

3.12 ABOVEGROUND MANUAL GAS SHUTOFF VALVE SCHEDnE

A. Valves for pipe sizes NPS 2 and smaller at service meter shall be one of the following:

1. One-piece, bronze ball valve with bronze trim. 2. Two-piece, full-port, bronze ball valves with bronze trim. 3. Bronze plug valve.

B. Distribution piping valves for pipe sizes NPS 2 and smaller shall be one of the following:


C. Valves in branch piping for single appliance shall be one of the following:


END OF SECTION 23 1 123

Fire Station # I7 Addition and Training Center Renovations PWA201201


SECTION 23 1 126 - FACILITY LIQUEFIED-PETROLEUM GAS PIPING

PART 1 - GENERAL

1.1 SUMMARY


Pipes, tubes, and fittings. Piping specialties. Piping and tubing joining materials. Valves. Pressure regulators. Storage containers. Transport truck unloading facility specialties. Pumps. Vaporizers.


A. Minimum Operating-Pressure Ratings:

1. For Piping Containing Only Vapor:

a. Piping and Valves: 125 psig unless otherwise indicated.

2. For Piping Containing Liquid:

a. Piping between Shutoff Valves: 350 psig unless otherwise indicated, b. Piping Other Than Above: 250 psig unless otherwise indicated. c. Valves and Fittings: 250 psig unless otherwise indicated.

B. LPG System Pressure within Buildings: One pressure range. 0.5 psig or less.

C. Delegated Design: Design restraints and anchors for LPG piping and equipment, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.

D. Seismic Performance: Vaporizers and storage container supports shall withstand the effects of earthquake motions determined according to SEIIASCE 7.

1. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified."




231126 - 1 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

Shop Drawings: For facility LPG piping layout. Include plans, piping layout and elevations, sections, and details for fabrication of pipe anchors, hangers, supports for multiple pipes, alignment guides, expansion joints and loops, and attachments of the same to building structure. Detail location of anchors, alignment guides, and expansion joints and loops.

Delegated-Design Submittal: For LPG piping and equipment indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

1. Detail fabrication and assembly of seismic restraints. 2. Design Calculations: Calculate requirements for selecting seismic restraints.

INFORMATIONAL SUBMITTALS

Seismic Qualification Certificates: Submit certification that vaporizer, storage container supports, accessories, and components will withstand seismic forces defined in Section 230548 "Vibration and Seismic Controls for HVAC Piping and Equipment." Include the following:

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

Welding certificates.

Field quality-control reports.

CLOSEOUT SUBMITTALS

Operation and maintenance data.

QUALITY ASSURANCE

Steel Support Welding Qualifications: Qualify procedures and personnel according to AWS Dl. 1 D l . IM, "Structural Welding Code - Steel."

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

Electrical Components, Devices, and Accessories: Listed and labeled as defined in NF'PA 70, by a qualified testing agency, and marked for intended location and application.



GAS PIPING

PART 2 - PRODUCTS

2.1 PIPES, TUBES, AND FITTINGS

A. Steel Pipe: ASTM A 53lA 53M, black steel, Schedules 40 and 80, Type E or S, Grade B.

1. Malleable-Iron Threaded Fittings: ASME B 16.3, Class 150, standard pattern. 2. Wrought-Steel Welding Fittings: ASTM A 234lA 234M for butt welding and socket

welding. 3. Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint,

and threaded ends. 4. Protective Coating for Underground Piping: Factory-applied, three-layer coating of

epoxy, adhesive, and PE.

a. Joint Cover Kits: Epoxy paint, adhesive, and heat-shrink PE sleeves.

2.2 PIPING SPECIALTIES

A. Flexible Piping Joints:

1. Approved for LPG service. 2. Stainless-steel bellows with woven, flexible, bronze, wire-reinforcing protective jacket. 3. Minimum working pressure of 250 psig and 250 deg F operating temperature. 4. Threaded-end connections to match equipment connected and shall be capable of

minimum 314-inch misalignment. 5. Maximum 36-inch length for liquid LPG lines.

B. Appliance Flexible Connectors:

Indoor, Fixed-Appliance Flexible Connectors: Comply with ANSI 221.24. Indoor, Movable-Appliance Flexible Connectors: Comply with ANSI 221.69. Outdoor, Appliance Flexible Connectors: Comply with ANSI 221.75. Corrugated stainless-steel tubing with polymer coating. Operating-Pressure Rating: 0.5 psig. End Fittings: Zinc-coated steel. Threaded Ends: Comply with ASME B 1.20.1. Maximum Length: 72 inches.

C. Quick-Disconnect Devices: Comply with ANSI 22 1.41.

1 . Copper-alloy convenience outlet and matching plug connector. 2. Nitrile seals. 3. Hand operated with automatic shutoff when disconnected. 4. For indoor or outdoor applications. 5. Adjustable, retractable restraining cable.

D. Y-Pattern Strainers:

1. Body: ASTM A 126, Class B, cast iron with bolted cover and bottom drain connection.

Fire Station # I 7 Addition and Training Center Renovations 231126-3 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

2. End Connections: Threaded ends for NPS 2 and smaller. 3. Strainer Screen: 40-mesh startup strainer and perforated stainless-steel basket with 50

percent free area. 4. CWP Rating: 125 psig.

E. Weatherproof Vent Cap: Cast- or malleable-iron increaser fitting with corrosion-resistant wire screen, with free area at least equal to cross-sectional area of connecting pipe and threaded-end connection.

2.3 JOINING MATERIALS

A. Joint Compound and Tape: Suitable for LPG.

B. Welding Filler Metals: Comply with AWS D 10.12D 10.12M for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.

C. Brazing Filler Metals: Alloy with melting point greater than 1000 deg F complying with AWS A5.81A5.8M.

2.4 MANUAL GAS SHUTOFF VALVES

A. See "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles for where each valve type is applied in various services.

B. General Requirements for Metallic Valves, NPS 2 and Smaller for Vapor Service: Comply with ASME B16.33.

1. CWP Rating: 125 psig. 2. Threaded Ends: Comply with ASME B 1.20.1. 3. Dryseal Threads on Flare Ends: Comply with ASME B 1.20.3. 4. Tamperproof Feature: Locking feature for valves indicated in "Underground Manual Gas

Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles.

5. Listing: Listed and labeled by an NRTL acceptable to authorities having jurisdiction for valves 1 inch and smaller.

6. Service Mark: Valves 1-114 inch to NPS 2 shall have initials "WOG" permanently marked on valve body.

C. One-Piece, Bronze Ball Valve with Bronze Trim: MSS SP-1 10.


a. Brasscraft Manufacturing Company; a Masco company. b. Conbraco Industries, Inc.; Apollo Div. c. Lyall, R. W. & Comuanv, Inc. d. McDonald, A. Y. Mfg. Co. e. Perfection Corporation; a subsidiary of American Meter Company.

Fire Station # I 7 Addition and Training Center Renovations 231126 - 4 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

2. Body: Bronze, complying with ASTM B 584. 3. Ball: Chrome-plated brass. 4. Stem: Bronze; blowout proof. 5. Seats: Reinforced TFE; blowout proof. 6. Packing: Separate packnut with adjustable-stem packing threaded ends. 7. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff

Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 8. CWP Rating: 600 psig. 9. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to

authorities having jurisdiction. 10. Service: Suitable for LPG service with "WOG" indicated on valve body.

D. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: MSS SP-I 10.


a. BrassCraft Manufacturing Company: a Masco company. b. Conbraco Industries, Inc.; Apollo Div. c. Lyall, R. W. & Company, Inc. d. McDonald, A. Y. Mfrr. Co. e. Perfection Corporation; a subsidiary of American Meter Company.

Body: Bronze, complying with ASTM B 584. Ball: Chrome-plated bronze. Stem: Bronze; blowout proof. Seats: Reinforced TFE; blowout proof. Packing: Threaded-body packnut design with adjustable-stem packing. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. CWP Rating: 600 psig. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to authorities having jurisdiction. Service: Suitable for LPG service with "WOG" indicated on valve body.

E. Two-Piece, Regular-Port Bronze Ball Valves with Bronze Trim: MSS SP-I 10.


a. BrassCraft Manufacturing Company; a Masco company. b. Conbraco Industries. Inc.; Apollo Div. c. Lyall, R. W. & Company, Inc. d. McDonald. A. Y. Mfg. Co. e. Perfection Corporation; a subsidiary of American Meter Company.

2. Body: Bronze, complying with ASTM B 584. 3. Ball: Chrome-plated bronze. 4. Stem: Bronze; blowout proof.


GAS PIPING

5. Seats: Reinforced TFE. 6. Packing: Threaded-body packnut design with adjustable-stem packing. 7. Ends: Threaded, flared, or socket as indicated in "Underground Manual Gas Shutoff

Valve Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 8. CWP Rating: 600 psig. 9. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to



a. Lee Brass Companv. b. McDonald, A. Y. Mfg. Co.

2. Body: Bronze, complying with ASTM B 584. 3. Plug: Bronze. 4. Ends: Threaded or socket as indicated in "Underground Manual Gas Shutoff Valve

Schedule" and "Aboveground Manual Gas Shutoff Valve Schedule" Articles. 5. Operator: Square head or lug type with tamperproof feature where indicated. 6. Pressure Class: 125 psig. 7. Listing: Valves NPS 1 and smaller shall be listed and labeled by an NRTL acceptable to


G. Valve Boxes:

1. Cast-iron, two-section box. 2. Top section with cover with "GAS" lettering. 3. Bottom section with base to fit over valve and barrel a minimum of 5 inches in diameter. 4. Adjustable cast-iron extensions of length required for depth of bury. 5. Include tee-handle, steel operating wrench with socket end fitting valve nut or flat head

and with stem of length required to operate valve.

2.5 MOTORIZED GAS VALVES

A. Electrically Operated Valves: Comply with UL 429.


ASCO. a. - b. ASCO Power Technologies, LP; Division of Emerson. c. Dungs, Karl, Inc. d. Eclivse Combustion, Inc. e. Goven Valve Corn.; Tvco Environmental Svstems.

Fire Station # I 7 Addition and Training Center Renovations 231 126 - 6 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

f. Magnatrol Valve Corporation. g. Parker Hannifin Corporation: Climate & Industrial Controls Group; Skinner Valve

&. h. Watts Regulator Co. ; Division of Watts Water Technologies, Inc.

2. Pilot operated. 3. Body: Brass or aluminum. 4. Seats and Disc: Nitrile rubber. 5. Springs and Valve Trim: Stainless steel. 6. 120-V ac, 60 Hz, Class B, continuous-duty molded coil, replaceable. 7. NEMA ICS 6, Type 4, coil enclosure. 8. Normally closed. 9. Visual position indicator.

2.6 PRESSURE REGULATORS

A. General Requirements:

I. Single stage and suitable for LPG. 2. Steel jacket and corrosion-resistant components. 3. Elevation compensator. 4. End Connections: Threaded for regulators NPS 2 and smaller.

B. Line Pressure Regulators: Comply with ANSI 221.80.


a. Actaris. b. American Meter Company. c. Eclipse Combustion, Inc. d. Fisher Control Valves and Regulators: Division of Emerson Process Management. e. Invensys. f. Maxitrol Company. g. Richards Industries; Jordan Valve Div.

Body and Diaphragm Case: Cast iron or die-cast aluminum. Springs: Zinc-plated steel; interchangeable. Diaphragm Plate: Zinc-plated steel. Seat Disc: Nitrile rubber resistant to gas impurities, abrasion, and deformation at the valve port. Orifice: Aluminum; interchangeable. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. Single-port, self-contained regulator with orifice no larger than required at maximum pressure inlet and no pressure sensing piping external to the regulator. Pressure regulator shall maintain discharge pressure setting downstream and not exceed 150 percent of design discharge pressure at shutoff. Overpressure Protection Device: Factory mounted on pressure regulator.


GAS PIPING

11. Atmospheric Vent: Factory- or field-installed, stainless-steel screen in opening if not connected to vent piping.

12. Maximum Inlet Pressure: 2 psig.

C. Appliance Pressure Regulators: Comply with ANSI 221.18.


a. Canadian Meter Company Inc. b. Eaton Corporation; Controls Div. c. Harper Wyman Co. d. Maxitrol Company. e. SCP, Inc.

2. Body and Diaphragm Case: Die-cast aluminum. 3. Springs: Zinc-plated steel; interchangeable. 4. Diaphragm Plate: Zinc-plated steel. 5. Seat Disc: Nitrile rubber. 6. Seal Plug: Ultraviolet-stabilized, mineral-filled nylon. 7. Factory-Applied Finish: Minimum three-layer polyester and polyurethane paint finish. 8. Regulator may include vent limiting device, instead of vent connection, if approved by

authorities having jurisdiction. 9. Maximum Inlet Pressure: 1 psig.

2.7 DIELECTRIC UNIONS

A. Dielectric Unions:


Capitol Manufacturing Company. Central Plastics Company. Hart Industries International. Inc. Jomar International Ltd. Matco-Norca, Inc. McDonald, A. Y. Mfg. Co. Watts Regulator Co.; a division of Watts Water Technologies. Inc. Wilkins; a Zurn company.

2. Description:

a. Standard: ASSE 1079. b. Pressure Rating: 125 psig minimum at 180 deg F. c. End Connections: Solder-joint copper alloy and threaded ferrous.



GAS PIPING


A. Detectable Warning Tape: Acid- and alkali-resistant PE film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches wide and 4 mils thick, continuously inscribed with a description of utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches deep; colored yellow.

PART 3 - EXECUTION

3.1 OUTDOOR PIPING INSTALLATION

A. Comply with NFPA 58 and the International Fuel Gas Code requirements for installation and purging of LPG piping.

B. Install underground, LPG piping buried at least 36 inches below finished grade. Comply with requirements in Section 3 12000 "Earth Moving" for excavating, trenching, and backfilling.

1. If LPG piping is installed less than 36 inches below finished grade, install it in containment conduit.

C. Install underground, PE, LPG piping according to ASTM D 2774.

D. Steel Piping with Protective Coating:

1. Apply joint cover kits to pipe after joining to cover, seal, and protect joints. 2. Repair damage to PE coating on pipe as recommended in writing by protective coating

manufacturer. 3. Replace pipe having damaged PE coating with new pipe.

E. Copper Tubing with Protective Coating:

1. Apply joint cover kits over tubing to cover, seal, and protect joints. 2. Repair damage to PE coating on pipe as recommended in writing by protective coating

manufacturer.

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

G. Install pressure gage downstream from each service regulator. Pressure gages are specified in Section 2305 19 "Meters and Gages for HVAC Piping."

3.2 INDOOR PIPING INSTALLATION

A. Comply with the International Fuel Gas Code for installation and purging of LPG piping.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Indicated locations and arrangements were used to size pipe and calculate friction loss, expansion, and other design considerations. Install piping as indicated unless deviations to layout are approved on Coordination Drawings.

Fire Station #I 7 Addition and Training Center Renovations 231 126 - 9 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

C. Arrange for pipe spaces, chases, slots, sleeves, and openings in building structure during progress of construction, to allow for mechanical installations.

D. Install piping in concealed locations unless otherwise indicated and except in equipment rooms and service areas.

E. 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.

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

G. Locate valves for easy access.

H. Install LPG piping at uniform grade of 2 percent down toward drip and sediment traps,

I. Install piping free of sags and bends.

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

K. Verify final equipment locations for roughing-in.

L. Comply with requirements in Sections specifying gas-fired appliances and equipment for roughing-in requirements.

M. Drips and Sediment Traps: Install drips at points where condensate may collect, including service-meter outlets. Locate where readily accessible to permit cleaning and emptying. Do not install where condensate is subject to freezing.

1. Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped. Use nipple a minimum length of 3 pipe diameters, but not less than 3 inches (75 mm) long and same size as connected pipe. Install with space below bottom of drip to remove plug or cap.

N. Extend relief vent connections for service regulators, line regulators, and overpressure protection devices to outdoors and terminate with weatherproof vent cap.

0. Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade or floors, and in floor channels unless indicated to be exposed to view.

P. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side down.

Q. Connect branch piping from top or side of horizontal piping.

R. Install unions in pipes NPS 2 and smaller, adjacent to each valve, at final connection to each piece of equipment.

S. Do not use LPG piping as grounding electrode.

T. Install strainer on inlet of each line-pressure regulator and automatic or electrically operated valve.

Fire Station # I 7 Addition and Training Center Renovations 231 126 - 10 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

U. Install pressure gage downstream from each line regulator. Pressure gages are specified in Section 2305 19 "Meters and Gages for HVAC 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 2305 17 "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 2305 18 "Escutcheons for HVAC Piping."

3.3 VALVE INSTALLATION

A. Install manual gas shutoff valve for each gas appliance ahead of corrugated stainless-steel tubing, or copper connector.

B. Install underground valves with valve boxes.

C. Install regulators and overpressure protection devices with maintenance access space adequate for servicing and testing.

D. Install anode for metallic valves in underground PE piping.

3.4 PIPING JOINT CONSTRUCTION

A. Ream ends of pipes and tubes and remove burrs.

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

C. Threaded Joints:

1. Thread pipe with tapered pipe threads complying with ASME B 1.20.1. 2. Cut threads full and clean using sharp dies. 3. Ream threaded pipe ends to remove burrs and restore full ID of pipe. 4. Apply appropriate tape or thread compound to external pipe threads unless dryseal

threading is specified. 5. 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. Welded Joints:

1. Construct joints according to AWS D10.12/D10.12M, using qualified processes and welding operators.

2. Bevel plain ends of steel pipe. 3. Patch factory-applied protective coating as recommended by manufacturer at field welds

and where damage to coating occurs during construction.

Fire Station #17 Addition and Training Center Renovations 231126 - 11 PWA201201 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

E. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," Ch. 22, "Pipe and Tube. "

F. Flared Joints: Cut tubing with roll cutting tool. Flare tube end with tool to result in flare dimensions complying with SAE J513. Tighten finger tight, then use wrench. Do not overtighten.

G. PE Piping Heat-Fusion Joints: Clean and dry joining surfaces by wiping with clean cloth or paper towels. Join according to ASTM D 2657.

1. Plain-End Pipe and Fittings: Use butt fusion. 2. Plain-End Pipe and Socket Fittings: Use socket fusion.


A. Install seismic restraints on piping. Comply with requirements for seismic-restraint devices specified in Section230548 "Vibration and Seismic Controls for W A C Piping and Equipment. "

B. Comply with requirements for pipe hangers and supports specified in Section 230529 "Hangers and Supports for W A C Piping and Equipment."

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

1. NPS 1 and Smaller: Maximum span, 96 inches; minimum rod size, 318 inch. 2. NPS 1-114: Maximum span, 108 inches; minimum rod size, 318 inch. 3. NPS 1-112 and NPS 2: Maximum span, 108 inches; minimum rod size, 318 inch.

D. Install hangers for horizontal, corrugated stainless-steel tubing with the following maximum spacing and minimum rod sizes:

1. NPS 318: Maximum span, 48 inches; minimum rod size, 318 inch. 2. NPS 112: Maximum span, 72 inches; minimum rod size, 318 inch. 3. NPS 314 and Larger: Maximum span, 96 inches; minimum rod, 318 inch.

3.6 CONNECTIONS

A. Connect to utility's gas main according to utility's procedures and requirements.

B. Install LPG piping electrically continuous, and bonded to gas appliance equipment grounding conductor of the circuit powering the appliance according to NFTA 70.

C. Install piping adjacent to appliances to allow service and maintenance of appliances.

D. Connect piping to appliances using manual gas shutoff valves and unions. Install valve within 72 inches of each gas-fired appliances and equipment. Install union between valve and appliances or equipment.


GAS PIPING

E. Sediment Traps: Install tee fitting with capped nipple in bottom to form drip, as close as practical to inlet of each appliance.


A. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment" for piping and valve identification.

B. Install detectable warning tape directly above gas piping, 12 inches below finished grade, except 6 inches below subgrade under pavements and slabs.


A. Test, inspect, and purge LPG according to NFPA 58 and the International Fuel Gas Code and requirements of authorities having jurisdiction.

B. LPG piping will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

3.9 OUTDOOR PIPING SCHEDULE

A. Underground LPG liquid piping shall be the following:

1. Schedule 40 steel pipe with wrought-steel fittings and welded joints. Coat pipe and fittings with protective coating for steel piping.

B. Aboveground LPG liquid piping shall be the following:

1. NPS 2 and Smaller: steel pipe, malleable-iron threaded fittings and threaded joints. Coat pipe and fittings with protective coating for steel piping.

C. Underground LPG vapor piping shall be the following: 1. Schedule 40, steel pipe with wrought-steel fittings and welded joints. Coat pipe and

fittings with protective coating for steel piping.

D. Aboveground LPG vapor piping shall be the following:

1. Schedule 40, steel pipe with malleable-iron fittings and threaded joints.

E. Containment Conduit: Schedule 40, steel pipe with wrought-steel fittings and welded joints. Coat pipe and fittings with protective coating for steel piping.

3.10 INDOOR PIPING SCHEDULE FOR SYSTEM PRESSURES LESS THAN 0.5 PSIG

A. Aboveground, branch piping NPS 1 and smaller shall be the following: 1. Schedule 40, steel pipe with malleable-iron fittings and threaded joints.


GAS PIPING

B. Aboveground, distribution piping shall be the following:


C. Underground, below building, piping shall be the following:


D. Containment Conduit: Schedule 40, steel pipe with wrought-steel fittings and welded joints. Coat pipe and fittings with protective coating for steel piping.

E. Containment Conduit Vent Piping: Schedule 40, steel pipe with malleable-iron fittings and threaded or wrought-steel fittings with welded joints. Coat underground pipe and fittings with protective coating for steel piping.

3.11 UNDERGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE

A. Connections to Existing Gas Piping: Use valve and fitting assemblies made for tapping utility's gas mains and listed by an NRTL.

B. Underground Vapor Piping: PE ball valve.

3.12 ABOVEGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE

A. Aboveground Liquid Piping:

1. Two-piece, full-port, bronze ball valves with bronze trim.

B. Valves for pipe NPS 2 and smaller at service meter shall be one of the following:


C. Distribution piping valves for pipe NPS 2 and smaller shall be one of the following:


D. Valves in branch piping for single appliance shall be one of the following:




231126- 14 FACILITY LIQUEFIED-PETROLEUM

GAS PIPING

SECTION 233 1 13 - METAL DUCTS

PART 1 - GENERAL


1. Rectangular ducts and fittings. 2. Round ducts and fittings. 3. Sheet metal materials. 4. Sealants and gaskets. 5. Hangers and supports.

B. Related Sections: 1. Section 230593 "Testing, Adjusting, and Balancing for HVAC" for testing, adjusting, and

balancing requirements for metal ducts. 2. Section 233300 "Air Duct Accessories" for dampers, sound-control devices, duct-mounting

access doors and panels, turning vanes, and flexible ducts.

1.2 PERFORMANCE REQUIREMENTS A. Delegated Duct Design: Duct construction, including sheet metal thicknesses, seam and joint

construction, reinforcements, and hangers and supports, shall comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" and performance requirements and design criteria indicated in "Duct Schedule" Article.

B. Structural Performance: Duct hangers and supports shall withstand the effects of gravity loads and stresses within limits and under conditions described in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible"

C. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE 62.1.

1.3 ACTION SUBMITTALS A. Product Data: For each type of product indicated. B. Shop Drawings:

1 . Factory- and shop-fabricated ducts and fittings. 2. Fittings. 3. Reinforcement and spacing. 4. Seam and joint construction. 5. Penetrations through fire-rated and other partitions. 6. Locations for duct accessories, including dampers, turning vanes, and access doors and

panels. 7. Hangers and supports, including methods for duct and building attachment and vibration

isolation.

1.4 QUALITY ASSURANCE A. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and

Equipment" and Section 7 - "Construction and System Start-up." B. ASHRAEIIESNA Compliance: Applicable requirements in ASHRAEIIESNA 90.1, Section 6.4.4

- "HVAC System Construction and Insulation."

PART 2 - PRODUCTS

2.1 RECTANGULAR DUCTS AND FITTINGS A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible" based on indicated static-pressure class unless otherwise indicated.


233113- 1 METAL DUCTS

Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 2-1, "Rectangular Duct/Transverse Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's " W A C Duct Construction Standards - Metal and Flexible. " Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 2-2, "Rectangular DuctLongitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct- support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." Elbows, Transitions, Offsets, Branch Connections, and Other Duct Construction: Select types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Chapter 4, "Fittings and Other Construction," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

ROUND DUCTS AND FITTINGS General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Chapter 3, "Round, Oval, and Flexible Duct," based on indicated static-pressure class unless otherwise indicated. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-1, "Round Duct Transverse Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." 1. Transverse Joints in Ducts Larger Than 60 Inches in Diameter: Flanged. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." 1. Fabricate round ducts larger Than 90 inches in diameter with butt-welded longitudinal

seams. Tees and Laterals: Select types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and Figure 3-6, "Conical Tees," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

SHEET METAL MATERIALS General Material Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains, discolorations, and other imperfections. Galvanized Sheet Steel: Comply with ASTM A 653lA 653M. 1. Galvanized Coating Designation: G60. 2. Finishes for Surfaces Exposed to View: Mill phosphatized. Reinforcement Shapes and Plates: ASTM A 36lA 36M, steel plates, shapes, and bars; black and galvanized. 1. Where black- and galvanized-steel shapes and plates are used to reinforce aluminum ducts,

isolate the different metals with butyl rubber, neoprene, or EPDM gasket materials. Tie Rods: Galvanized steel, 114-inch minimum diameter for lengths 36 inches or less; 318-inch minimum diameter for lengths longer than 36 inches.


2331 13 - 2 METAL DUCTS

2.4 SEALANT AND GASKETS A. General Sealant and Gasket Requirements: Surface-burning characteristics for sealants and

gaskets shall be a maximum flame-spread index of 25 and a maximum smoke-developed index of 50 when tested according to UL 723; certified by an NRTL.

B. Two-Part Tape Sealing System: 1. Tape: Woven cotton fiber impregnated with mineral gypsum and modified acrylic/silicone

activator to react exothermically with tape to form hard, durable, airtight seal. 2. Tape Width: 4 inches. 3. Sealant: Modified styrene acrylic. 4. Water resistant. 5. Mold and mildew resistant. 6. Maximum Static-Pressure Class: 10-inch wg, positive and negative. 7. Service: Indoor and outdoor. 8. Service Temperature: Minus 40 to plus 200 deg F. 9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum. 10. For indoor applications, sealant shall have a VOC content of 250 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24). 11. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. Water-Based Joint and Seam Sealant: I. Application Method: Brush on. 2. Solids Content: Minimum 65 percent. 3. Shore A Hardness: Minimum 20. 4. Water resistant. 5. Mold and mildew resistant. 6. VOC: Maximum 75 g/L (less water). 7. Maximum Static-Pressure Class: 10-inch wg, positive and negative. 8. Service: Indoor or outdoor. 9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum sheets. D. Flanged Joint Sealant: Comply with ASTM C 920.

1. General: Single-component, acid-curing, silicone, elastomeric. 2. Type:S. 3. Grade: NS. 4. Class: 25. 5. Use: 0 . 6. For indoor applications, sealant shall have a VOC content of 250 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24). 7. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

E. Flange Gaskets: Butyl rubber, neoprene, or EPDM polymer with polyisobutylene plasticizer. F. Round Duct Joint 0-Ring Seals:

1. Seal shall provide maximum 3 cfm/100 sq. ft. at I-inch wg and shall be rated for lo-inch wg static-pressure class, positive or negative.

2. EPDM O-ring to seal in concave bead in coupling or fitting spigot. 3. Double-lipped, EPDM O-ring seal, mechanically fastened to factory-fabricated couplings

and fitting spigots.

2.5 HANGERS AND SUPPORTS A. Hanger Rods for Noncorrosive Environments: Cadmium-plated steel rods and nuts.


233113 - 3 METAL DUCTS

B. Hanger Rods for Corrosive Environments: Electrogalvanized, all-thread rods or galvanized rods with threads painted with zinc-chromate primer after installation.

C. Strap and Rod Sizes: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Table 5-1, "Rectangular Duct Hangers Minimum Size," and Table 5-2, "Minimum Hanger Sizes for Round Duct."

D. Steel Cables for Galvanized-Steel Ducts: Galvanized steel complying with ASTM A 603. E. Steel Cable End Connections: Cadmium-plated steel assemblies with brackets, swivel, and bolts

designed for duct hanger service; with an automatic-locking and clamping device. F. Duct Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible

with duct materials. G. Trapeze and Riser Supports:

1. Supports for Galvanized-Steel Ducts: Galvanized-steel shapes and plates. 2. Supports for Stainless-Steel Ducts: Stainless-steel shapes and plates. 3. Supports for Aluminum Ducts: Aluminum or galvanized steel coated with zinc chromate.

PART 3 - EXECUTION

3.1 DUCT INSTALLATION A. Drawing plans, schematics, and diagrams indicate general location and arrangement of duct

system. Indicated duct locations, configurations, and arrangements were used to size ducts and calculate friction loss for air-handling equipment sizing and for other design considerations. Install duct systems as indicated unless deviations to layout are approved on Shop Drawings and Coordination Drawings.

B. Install ducts according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" unless otherwise indicated.

C. Install round ducts in maximum practical lengths. D. Install ducts with fewest possible joints. E. Install factory- or shop-fabricated fittings for changes in direction, size, and shape and for branch

connections. F. Unless otherwise indicated, install ducts vertically and horizontally, and parallel and

perpendicular to building lines. G. Install ducts close to walls, overhead construction, columns, and other structural and permanent

enclosure elements of building. H. Install ducts with a clearance of 1 inch, plus allowance for insulation thickness. I. Route ducts to avoid passing through transformer vaults and electrical equipment rooms and

enclosures. J. Where ducts pass through non-fire-rated interior partitions and exterior walls and are exposed to

view, cover the opening between the partition and duct or duct insulation with sheet metal flanges of same metal thickness as the duct. Overlap openings on four sides by at least 1-112 inches.

K. Where ducts pass through fire-rated interior partitions and exterior walls, install fire dampers. Comply with requirements in Section 233300 "Air Duct Accessories" for fire and smoke dampers.

L. Protect duct interiors from moisture, construction debris and dust, and other foreign materials. Comply with SMACNA's "IAQ Guidelines for Occupied Buildings Under Construction," Appendix G, "Duct Cleanliness for New Construction Guidelines", intermediate cleanliness level.

3.2 INSTALLATION OF EXPOSED DUCTWORK A. Protect ducts exposed in finished spaces from being dented, scratched, or damaged. B. Trim duct sealants flush with metal. Create a smooth and uniform exposed bead. Do not use two-

part tape sealing system. C. Grind welds to provide smooth surface free of burrs, sharp edges, and weld splatter. When

welding stainless steel with a No. 3 or 4 finish, grind the welds flush, polish the exposed welds, and treat the welds to remove discoloration caused by welding.



Maintain consistency, symmetry, and uniformity in the arrangement and fabrication of fittings, hangers and supports, duct accessories, and air outlets. Repair or replace damaged sections and finished work that does not comply with these requirements.

DUCT SEALING Seal ducts for duct static-pressure, seal classes, and leakage classes specified in "Duct Schedule" Article according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." Seal ducts to the following seal classes according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible": 1. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." 2. Outdoor, Supply-Air Ducts: Seal Class A. 3. Outdoor, Exhaust Ducts: Seal Class C. 4. Outdoor, Return-Air Ducts: Seal Class C. 5. Unconditioned Space, Supply-Air Ducts in Pressure Classes 2-Inch wg and Lower: Seal

Class B. 6. Unconditioned Space, Supply-Air Ducts in Pressure Classes Higher Than 2-Inch wg: Seal

Class A. 7 . Unconditioned Space, Exhaust Ducts: Seal Class C. 8. Unconditioned Space, Return-Air Ducts: Seal Class B. 9. Conditioned Space, Supply-Air Ducts in Pressure Classes 2-Inch wg and Lower: Seal

Class C. 10. Conditioned Space, Supply-Air Ducts in Pressure Classes Higher Than 2-Inch wg: Seal

Class B. 11. Conditioned Space, Exhaust Ducts: Seal Class B. 12. Conditioned Space, Return-Air Ducts: Seal Class C.

HANGER AND SUPPORT INSTALLATION Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Chapter 5, "Hangers and Supports." Building Attachments: Concrete inserts, powder-actuated fasteners, or structural-steel fasteners appropriate for construction materials to which hangers are being attached. 1. Where practical, install concrete inserts before placing concrete. 2. Install powder-actuated concrete fasteners after concrete is placed and completely cured. 3. Use powder-actuated concrete fasteners for standard-weight aggregate concretes or for

slabs more than 4 inches thick. 4. Do not use powder-actuated concrete fasteners for lightweight-aggregate concretes or for

slabs less than 4 inches thick. 5. Do not use powder-actuated concrete fasteners for seismic restraints. Hanger Spacing: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Table 5-1, "Rectangular Duct Hangers Minimum Size," and Table 5-2, "Minimum Hanger Sizes for Round Duct," for maximum hanger spacing; install hangers and supports within 24 inches of each elbow and within 48 inches of each branch intersection. Hangers Exposed to View: Threaded rod and angle or channel supports. Support vertical ducts with steel angles or channel secured to the sides of the duct with welds, bolts, sheet metal screws, or blind rivets; support at each floor and at a maximum intervals of 16 feet. Install upper attachments to structures. Select and size upper attachments with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used.

CONNECTIONS Make connections to equipment with flexible connectors complying with Section 233300 "Air Duct Accessories."


233113 - 5 METAL DUCTS

B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for branch, outlet and inlet, and terminal unit connections.

3.6 START UP A. Air Balance: Comply with requirements in Section 230593 "Testing, Adjusting, and Balancing

for HVAC. "

3.7 DUCT SCHEDULE A. Fabricate ducts with galvanized sheet steel except as otherwise indicated. B. Supply and Return Ducts:

1. Ducts Connected to Fan Coil Units, Furnaces, Heat Pumps, and Terminal Units: a. Pressure Class: Positive 2-inch wg. b. SMACNA Leakage Class for Rectangular: 12. c. SMACNA Leakage Class for Round and Hat Oval: 12. d. Liner: I" internal

2. Ducts Connected to Constant-Volume Air-Handling Units: a. Pressure Class: Positive 2-inch wg. b. SMACNA Leakage Class for Rectangular: 6. c. SMACNA Leakage Class for Round and Flat Oval: 6. d. Liner: 1" internal

3. Ducts Connected to Equipment Not Listed Above: a. Pressure Class: Positive 2-inch wg. b. SMACNA Leakage Class for Rectangular: 3. c. SMACNA Leakage Class for Round and Flat Oval: 3. d. Liner: 1" internal

C. Exhaust Ducts: 1. Ducts Connected to Fans Exhausting (ASHRAE 62.1, Class 1 and 2) Air:

a. Pressure Class: Negative 1-inch wg. b. SMACNA Leakage Class for Rectangular: 12. c. SMACNA Leakage Class for Round and Flat Oval: 6.

2. Ducts Connected to Air-Handling Units: a. Pressure Class: Positive or negative 3-inch wg. b. SMACNA Leakage Class for Rectangular: 6. c. SMACNA Leakage Class for Round and Flat Oval: 3.

3. Ducts Connected to Equipment Not Listed Above: a. Pressure Class: Positive or negative %-inch wg. b. Minimum SMACNA Seal Class: B if negative pressure, and A if positive pressure. c. SMACNA Leakage Class for Rectangular: 6. d. SMACNA Leakage Class for Round and Flat Oval: 3.

D. Outdoor-Air (Not Filtered, Heated, or Cooled) Ducts: 1. Ducts Connected to Fan Coil Units, Furnaces, Heat Pumps, and Terminal Units:

a. Pressure Class: Positive or negative 1-inch wg. b. SMACNA Leakage Class for Rectangular: 12. c. SMACNA Leakage Class for Round and Flat Oval: 6.

2. Ducts Connected to Air-Handling Units: a. Pressure Class: Positive or negative 2-inch wg. b. SMACNA Leakage Class for Rectangular: 6. c. SMACNA Leakage Class for Round and Flat Oval: 3.

3. Ducts Connected to Equipment Not Listed Above: a. Pressure Class: Positive or negative 2-inch wg. b. SMACNA Leakage Class for Rectangular: 3. c. SMACNA Leakage Class for Round and Flat Oval: 3.

E. Intermediate Reinforcement: 1. Galvanized-Steel Ducts: Galvanized steel.



F. Elbow Configuration: 1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible," Figure 4-2, "Rectangular Elbows." 2. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible," Figure 4-2, "Rectangular Elbows." 3. Round Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Figure 3-4, "Round Duct Elbows." a. Minimum Radius-to-Diameter Ratio and Elbow Segments: Comply with

SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Table 3-1, "Mitered Elbows." Elbows with less than 90-degree change of direction have proportionately fewer segments.

b. Round Elbows, 12 Inches and Smaller in Diameter: Stamped or pleated. c. Round Elbows, 14 Inches and Larger in Diameter: Standing seam.

G. Branch Configuration: 1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible," Figure 4-6, "Branch Connection." a. Rectangular Main to Rectangular Branch: 45-degree entry. b. Rectangular Main to Round Branch: Spin in.

2. Round: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and Figure 3-6, "Conical Tees." Saddle taps are permitted in existing duct. a. All velocities: 45-degree lateral.





SECTION 233 1 13.2 DUCT ACCESSORIES

PART 1 GENERAL

1.0 1 SECTION INCLUDES A. Flexible duct connections.

1.02 SUBMITTALS A. See General and Special Conditions for submittal requirements and procedures. B. Product data for duct access doors and flexible duct connections.

PART 2 PRODUCTS

2.01 DUCT ACCESS DOORS A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal and

Flexible, and as indicated. See schedule on Drawing. B. Fabrication: Rigid and close-fitting of galvanized steel with sealing gaskets and quick fastening

locking devices. For insulated ducts, install minimum 1 inch thick insulation with sheet metal cover.

C. Access doors with sheet metal screw fasteners are not acceptable.

2.02 FLEXIBLE DUCT CONNECTIONS A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards - Metal and

Flexible, and as indicated. B. Flexible Duct Connections: Fabric crimped into metal edging strip.

1. Fabric: UL listed fire-retardant neoprene coated woven glass fiber fabric to NFPA 90A, minimum density 30 oz per sq yd. a. Net Fabric Width: Approximately 2 inches wide.

2. Metal: 3 inches wide, 24 gage thick galvanized steel.

2.03 LOWERS A Furnish and install louvers as sized on the drawings, coordinate opening framing with

other trades as required for proper opening size and installation. B Louvers shall be high performance low pressure drop, low water penetration and

drainable. C Louvers performance shall be AMCA Certified and shall meet or exceed the following

specifications: Static pressure drop: 0.07" or less at 750 FPM through free area. Water penetration: Beginning point at .O1 oz/ft2- 1000 FPM minimum Free Area: 50% minimum

D Louver frame and blades shall be fabricated from 0 .80 thick extruded aluminum alloy 6063-T5. Blades and jambs shall have integral gutters for drainage of water. Blades shall be at a 37.5' angle on centers not exceeding 6". Each louver shall be designed to withstand a wind load or other load of 20 pounds per square foot. Birdscreen shall be framed, rear mounted, and removable of %" x 0.05 1" expanded flattened aluminum.

E Where louvers must be made up by multiple sections, the manufacturer shall submit with the shop drawings, all joint locations, methods of bracinglassembly. When the louvers are assembled per the shop drawings they shall meet the above specified structural loading.

F Louvers shall have a Kynar 500 finish with a dry film thickness of 1.2 mils. Color to be chosen by the ArchitectIEngineer from the manufacturer's standard colors at time of shop drawing submittals.

G Louvers shall be Ruskin ELF6350DMP or approved equivalent by Arrow, NCA, or Greenheck.


2331 13.2 - 1 DUCT ACCESSORIES

PART 3 EXECUTION

3.0 1 INSTALLATION A. Install accessories in accordance with manufacturer's instructions, NFPA 90A, and follow

SMACNA HVAC Duct Construction Standards - Metal and Flexible. Refer to Section 15810 for duct Static Pressure Construction Class and Seal Class.

B. Provide duct access doors for inspection of duct smoke detectors. C. Provide and install flexible duct connections at air handling unit.



2331 13.2 - 2 DUCT ACCESSORIES

SECTION 2337 13 - DIFFUSERS, REGISTERS, AND GRILLES

PART 1 - GENERAL


1. Rectangular and square ceiling diffusers. 2. Fixed face grilles.

B. Related Sections: 1. Section 233300 "Air Duct Accessories" for fire and smoke dampers and volume-control

dampers not integral to diffusers, registers, and grilles.

1.2 ACTION SUBMITTALS A. Product Data: For each type of product indicated, include the following:

1. Data Sheet: Indicate materials of construction, finish, and mounting details; and performance data including throw and drop, static-pressure drop, and noise ratings.

2. Diffuser, Register, and Grille Schedule: Indicate drawing designation, room location, quantity, model number, size, and accessories furnished.

PART 2 - PRODUCTS 2.1 Basis-of-Design Product: Subject to compliance with requirements, provide product indicated on

Drawings or comparable product by one of the following: a. Nailor Industries Inc. b. Price Industries. c. m. d. Tuttle & Bailev.

2.2 Insulation: All grills for installation in ceiling systems shall be insulated with factory applied insulation.

2.2 SOURCE QUALITY CONTROL A. Verification of Performance: Rate diffusers, registers, and grilles according to ASHRAE 70,

"Method of Testing for Rating the Performance of Air Outlets and Inlets."

PART 3 - EXECUTION

3.1 INSTALLATION A. Install diffusers, registers, and grilles level and plumb. B. Ceiling-Mounted Outlets and Inlets: Drawings indicate general arrangement of ducts, fittings,

and accessories. Air outlet and inlet locations have been indicated to achieve design requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final locations where indicated, as much as practical. For units installed in lay-in ceiling panels, locate units in the center of panel. Where architectural features or other items conflict with installation, notify Engineer for a determination of final location.

C. Install diffusers, registers, and grilles with airtight connections to ducts and to allow service and maintenance of dampers, air extractors, and fire dampers.

3.2 ADJUSTING A. After installation, adjust diffusers, registers, and grilles to air patterns indicated, or as directed,

before starting air balancing.

END OF SECTION 2337 13

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233713 - 1 DIFFUSERS, REGISTERS, AND

GRILLES


SECTION 235400 - FURNACES

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Gas-fired, condensing furnaces and accessories complete with controls. 2. Air filters. 3. Refrigeration components.

1.2 SUBMITTALS

A. Product Data: Include rated capacities, operating characteristics, furnished specialties, and accessories for each of the following:

1. Furnace. 2. Thermostat. 3. Refrigeration components.

1.3 QUALITY ASSURANCE

A. 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.

B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1-2004, Section 5 - "Systems and Equipment" and Section 7 - "Construction and Startup."

C. ASHRAEIIESNA 90.1-2004 Compliance: Applicable requirements in ASHRAEIIESNA 90.1 - 2004, Section 6 - "Heating, Ventilating, and Air-Conditioning."

D. Comply with NFPA 70.

1.4 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace the following components of furnaces that fail in materials or workmanship within specified warranty period:

1. Warranty Period, Commencing on Date of Substantial Completion:

a. Furnace Heat Exchanger: 10 years. b. Integrated Ignition and Blower Control Circuit Board: Five years. c. Draft-Inducer Motor: Five years.

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235400-1 FURNACES

d. Refrigeration Compressors: 5 years. e. Evaporator and Condenser Coils: Five years.

PART 2 - PRODUCTS

2.1 GAS-FIRED FURNACES, CONDENSING

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

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

C. Basis-of-Design Product: Subject to compliance with requirements, provide the product indicated on Drawings or a comparable product by one of the following:

Adams Manufacturing Company. Amana Heating & Air Conditioning; Goodman Manufacturing Company, L.P. American Standard Companies, Inc. Arcoaire Air Conditioning & Heating; a division of International Comfort Products, LLC. Armstrong Air Conditioning Inc. Bryant Heating & Cooling Systems; Div. of United Technologies Corp. Carrier Corporation; Div. of United Technologies Corp. Clare Brothers. Comfort-Aire; a division of Heat Controller, Inc. Comfortmaker Air Conditioning & Heating; a division of International Comfort Products, LLC. Dornback Furnace. Goodman Manufacturing Company, L.P. Heil Heating & Cooling Products; a division of International Comfort Products, LLC. Lennox Industries Inc. Luxaire Corporation; a division of Unitary Products Group. Rheem Manufacturing Company; Air Conditioning Division. Ruud Air Conditioning Division. Tempstar Heating & Cooling Products; a division of International Comfort Products, LLC. Thermo Products, Inc.; a division of Burnham Holdings Inc. Trane. York International Corp.; a division of Unitary Products Group.

D. General Requirements for Gas-Fired, Condensing Furnaces: Factory assembled, piped, wired, and tested; complying with ANSI Z21.47lCSA 2.3, "Gas-Fired Central Furnaces," and with NFPA 54.

E. Cabinet: Galvanized steel.

1. Cabinet interior around heat exchanger shall be factory-installed insulation. 2. Lift-out panels shall expose burners and all other items requiring access for maintenance.

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235400-2 FURNACES

3. Factory paint external cabinets in manufacturer's standard color. 4. Airstream Surfaces: Surfaces in contact with the airstream shall comply with

requirements in ASHRAE 62.1-2004.

F. Fan: Centrifugal, factory balanced, resilient mounted, direct drive.

1. Fan Motors: Comply with requirements in Division 15 Section "Motors." 2. Special Motor Features: Single speed, Premium (TM) efficiency, as defined in

Division 15 Section "Motors," and with internal thermal protection and permanent lubrication.

3. Special Motor Features: Multitapped, multispeed with internal thermal protection and permanent lubrication.

4. Special Motor Features: Electronically controlled motor (ECM) controlled by integrated furnacelblower control.

G. Type of Gas: 1. Fire Station #17: Natural. 2. Training Building: Propane.

H. Heat Exchanger:

1. Primary: Stainless steel. 2. Secondary: Stainless steel.

I. Burner:

1 . Gas Valve: 100 percent safety two-stage main gas valve, main shutoff valve, pressure regulator, safety pilot with electronic flame sensor, limit control, transformer, and combination ignitionlfan timer control board.

2. Ignition: Electric pilot ignition, with hot-surface igniter or electric spark ignition.

J. Gas-Burner Safety Controls:

1. Electronic Flame Sensor: Prevents gas valve from opening until pilot flame is proven; stops gas flow on ignition failure.

2. Flame Rollout Switch: Installed on burner box; prevents burner operation. 3. Limit Control: Fixed stop at maximum permissible setting; de-energizes burner on

excessive bonnet temperature; automatic reset.

K. Combustion-Air Inducer: Centrifugal fan with thermally protected motor and sleeve bearings prepurges heat exchanger and vents combustion products; pressure switch prevents furnace operation if combustion-air inlet or flue outlet is blocked.

L. Furnace Controls: Solid-state board integrates ignition, heat, cooling, and fan speeds; adjustable fan-on and fan-off timing; terminals for connection to accessories.

M. Accessories:

1. Combination Combustion-Air Intake and Vent: PVC plastic fitting to combine combustion-air inlet and vent through roof.

2. CPVC Plastic Vent Materials.


235400-3 FURNACES

a. CPVC Plastic Pipe: Schedule 40, complying with ASTM F 441lF 441M. b. CPVC Plastic Fittings: Schedule 40, complying with ASTM F 438, socket type. c. CPVC Solvent Cement: ASTM F 493.

1) Use CPVC solvent cement that has a VOC content of 490 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2) Use adhesive primer that has a VOC content of 550 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. PVC Plastic Vent Materials:

a. PVC Plastic Pipe: Schedule 40, complying with ASTM D 1785. b. PVC Plastic Fittings: Schedule 40, complying with ASTM D 2466, socket type. c. PVC Solvent Cement: ASTM D 2564.

1) Use PVC solvent cement that has a VOC content of 510 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2) Use adhesive primer that has a VOC content of 550 giL or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

N. Capacities and Characteristics:

1. Airflow Configuration: Upflow. 2. Gas:

a. Type: Propane. b. Venting Type: Power venter with combustion-air intake. c. Minimum Efficiency AFUE: 90 percent. d. Heat Output: Per HVAC schedule e. Gas Connection Size: %". f. Draft-Inducer Motor.

g. Combustion-Air Inlet Size: Per manufacture spec . h. Combustion-Air Inlet Material: PVC. i. Heat-Exchanger Condensate Drain Size: per manufacture spec. j. Vent Size: per manufacture spec. k. Vent Material: PVC.

3. Fan:

a. Airflow: per plans.

4. Furnace Electrical Connection:

a. Volts: 120. b. Phase: 1. c. Hertz: 60. d. Full-Load Amperes: less than 12. e. Maximum Overcurrent Protection: 20.


235400-4 FURNACES

2.2 THERMOSTATS

Solid-State Thermostat: Wall-mounting, programmable, microprocessor-based unit with automatic switching from heating to cooling, preferential rate control, seven-day programmability with minimum of four temperature presets per day,and battery backup protection against power failure for program settings.

Single-Stage, Heating-Cooling Thermostat: Adjustable, heating-cooling, wall-mounting unit with fan on-automatic selector.

Control Wiring: Unshielded twisted-pair cabling.

1. No. 24 AWG, 100 ohm, four pair. 2. Cable Jacket Color: Blue.

Controls shall comply with requirements in ASHRAEIIESNA 90.1-2004, "Controls."

AIR FILTERS

Disposable Filters: 1-inch- thick fiberglass media in sheet metal frame.

REFRIGERATION COMPONENTS

General Refrigeration Component Requirements:

1. Refrigeration compressor, coils, and specialties shall be designed to operate with CFC- free refrigerants.

2. Energy Efficiency: Equal to or greater than prescribed by ASHRAEIIESNA 90.1-2004, "Energy Standard for Buildings except Low-Rise Residential Buildings."

Refrigerant Coil: Copper tubes mechanically expanded into aluminum fins. Comply with ARI 2101240, "Unitary Air-Conditioning and Air-Source Heat Pump Equipment." Match size with furnace. Include condensate drain pan with accessible drain outlet complying with ASHRAE 62.1 -2004.

1. Refrigerant Coil Enclosure: Steel, matching furnace and evaporator coil, with access panel and flanges for integral mounting at or on furnace cabinet and galvanized sheet metal drain pan coated with black asphaltic base paint.

Refrigerant Line Kits: Annealed-copper suction and liquid lines factory cleaned, dried, pressurized with nitrogen, sealed, and with suction line insulated. Provide in standard lengths for installation without joints, except at equipment connections.

1. Flexible Elastomeric: Closed-cell, sponge- or expanded-rubber materials. Comply with ASTM C 534, Type I, 1 inch thick.

Refrigerant Piping: Comply with requirements in Division 15 Section "Refrigerant Piping."

Air-Cooled, Compressor-Condenser Unit:


235400-5 FURNACES

1. Casing: Steel, finished with baked enamel, with removable panels for access to controls, weep holes for water drainage, and mounting holes in base. Provide brass service valves, fittings, and gage ports on exterior of casing.

2. Compressor: Hermetically sealed scroll type.

a. Crankcase heater. b. Vibration isolation mounts for compressor. c. Compressor motor shall have thermal- and current-sensitive overload devices, start

capacitor, relay, and contactor. d. Two-speed compressor motors shall have manual-reset high-pressure switch and

automatic-reset low-pressure switch. e. Refrigerant Charge: R-22 or R-4 10A.

3. Refrigerant Coil: Copper tube, with mechanically bonded aluminum fins, complying with ARI 2101240, and with liquid subcooler.

4. Heat-Pump Components: Reversing valve and low-temperature air cut-off thermostat. 5. Fan: Aluminum-propeller type, directly connected to motor. 6. Motor: Permanently lubricated, with integral thermal-overload protection. 7 . Low Ambient Kit: Permits operation down to 0 deg F. 8. Mounting Base: Concrete.

F. Capacities and Characteristics:

1. Refrigerant Coil:

a. Total Cooling Capacity: per plans. b. Sensible Cooling Capacity: per plans. c. Heating Capacity: per plans.

2. Compressor-Condenser Unit:

a. Cooling Energy Efficiency1 3 (SEER): . b. Volts: 208. c. Phase: 1. d. Hertz: 60. e. Full-Load Amperes: per plans. f. Maximum Overcurrent Protection: per plans.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install gas-fired furnaces and associated fuel and vent features and systems according to NFPA 54.

B. Suspended Units: Suspend from structure using threaded rods, spring hangers, and building attachments. Secure rods to unit hanger attachments. Adjust hangers so unit is level and plumb.


235400-6 FURNACES

1. Install seismic restraints to limit movement of furnace by resisting code-required seismic acceleration.

C. Base-Mounted Units: Secure units to substrate. Provide optional bottom closure base if required by installation conditions.

1. Anchor furnace to substrate to resist code-required seismic acceleration.

D. Controls: Install thermostats and at mounting height of 54 inches above floor.

E. Wiring Method: Install control wiring in accessible ceiling spaces and in gypsum board partitions where unenclosed wiring method may be used. Conceal control wiring except in unfinished spaces.

F. Install ground-mounted, compressor-condenser components on 4-inch- thick, reinforced concrete base; 4 inches larger on each side than unit. Concrete, reinforcement, and formwork are specified in Division 3 Section "Cast-in-Place Concrete." Coordinate anchor installation with concrete base.

G. Install ground-mounted, compressor-condenser components on polyethylene mounting base.

3.2 CONNECTIONS

A. Gas piping installation requirements are specified in Division 15 Section "Fuel Gas Piping." Drawings indicate general arrangement of piping, fittings, and specialties. Connect gas piping with union or flange and appliance connector valve.

B. Install piping adjacent to equipment to allow service and maintenance.

C. Vent Connection, Noncondensing, Gas-Fired Furnaces: Connect Type B vents to furnace vent connection and extend outdoors. Type B vents and their installation requirements are specified in Division 15 Section "Breechings, Chimneys;and Stacks."

D. Vent and Outside-Air Connection, Condensing, Gas-Fired Furnaces: Connect plastic piping vent material to furnace connections and extend outdoors. Terminate vent outdoors with a cap and in an arrangement that will protect against entry of birds, insects, and dirt.

1. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe. 2. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly. 3. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and

fittings according to the following:

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

b. CPVC Piping: Join according to ASTM D 2846lD 2846M Appendix. c. PVC Pressure Piping: Join schedule number ASTM D 1785, PVC pipe and PVC

socket fittings according to ASTM D 2672. Join other-than-schedule-number PVC pipe and socket fittings according to ASTM D 2855.

d. Requirements for Low-Emitting Materials:


235400-7 FURNACES

1) Use CPVC solvent cement that has a VOC content of 490 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2) Use PVC solvent cement that has a VOC content of 510 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3) Use adhesive primer that has a VOC content of 550 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

4. Slope pipe vent back to furnace or to outside terminal.

E. Connect ducts to furnace with flexible connector. Comply with requirements in Division 15 Section "Duct Accessories. "

F. Connect refrigerant tubing kits to refrigerant coil in furnace and to air-cooled, compressor- condenser unit.

1. Flared Joints: Use ASME B 16.26 fitting and flared ends, following procedures in CDA's "Copper Tube Handbook."

2. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using lead-free solder alloy complying with ASTM B 32.

3. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube" Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8.

G. Comply with requirements in Division 15 Section "Refrigerant Piping" for installation and joint construction of refrigerant piping.

H. Complete installation and startup checks and start units according to manufacturer's written instructions.

I. Verify proper operation of capacity control device.

J. Set controls, burner, and other adjustments for optimum heating performance and efficiency. Adjust heat-distribution features, including shutters, dampers, and relays, to provide optimum heating performance and system efficiency.

K. After completing installation, clean furnaces internally according to manufacturer's written instructions.

L. Install new filters in each furnace within 14 days after Substantial Completion.


A. Perform the following field tests and inspections and prepare test reports:

1. Perform electrical test and visual and mechanical inspection. 2. Leak Test: After installation, charge systems with refrigerant and oil and test for leaks.

Repair leaks, replace lost refrigerant and oil, and retest until no leaks exist. 3. Operational Test: After electrical circuitry has been energized, start units to confirm

proper operation, product capability, and compliance with requirements. 4. Verify that fan wheel is rotating in the correct direction and is not vibrating or binding.


235400-8 FURNACES

5. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

B. Verify that vibration isolation and flexible connections properly dampen vibration transmission to structure.


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235400-9 FURNACES
