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APPROVED
10/13/2017
12:00:00 AM
MECHANICAL SPECIFICATIONS
1. Do not scale drawings. Verify dimensions in field prior to commencement of work. Refer to architectural drawings for all be equipped with loop valves and zone valves per controls requirements. Systems shall be capable of Manual Gas Shutoff Valve Schedule"Articles.
dimensions. withstanding temperatures 180 degree f to 230 degree f for limited periods of time. Install piping and manifold in 4) Operator: Square head or lug type with tamperproof feature where indicated.
accordance with the manufacturer's recommendations. 5) Pressure Class: 125 psig(862 kPa).
2. Inasmuch as design for remodel and/or rehabilitation requires that certain assumptions be made regarding existing 6) Listing:Valves NPS 1 (DN 25)and smaller shall be listed and labeled by an NRTL acceptable to authorities 0 '0 z
conditions,and because some of these assumptions cannot be verified without destroying otherwise adequate or serviceable 2) Snowmelt piping shall be placed on 9 inch centers. Tube diameter, nominal 3/4".Wirsbo hePEX or approved having jurisdiction. o
portions of the building,the Engineer cannot assure the Owner or the contractor that the professional consulting services equivalent. 7) Service: Suitable for natural-gas service with"WOG"indicated on valve body. d co
herein encompass all contingencies. Field coordination during construction is imperative. Make reasonable allowances for F. PE Ball Valves:Comply with ASME B16.40. - OU o
unseen conditions. 1) Body: PE. 0 ^- C)
33. Drain and receptor piping for combustion condensate--not buried--type:schedule 40 solid-wall PVC, PVC fittings,and 2) Ball: PE. = p
3. Be responsible to field verify existing equipment remaining to be connected to new or existing systems. Provide PVC cement. 3) Stem:Acetal. 0 = LL 2
ductwork, piping,controls,diffusers,etc., as required to restore continuity of system(s),or to make new work meet existing 4) Seats and Seals: Nitrile. z w
conditions,whether indicated or not. 34. Indoor piping insulation-insulate all new heating water and snowmelt piping with UL approved,white,all service, 5) Ends: Plain or fusible to match piping. - >
mineral fiber,snap-on, pipe insulation. Insulate fittings with mineral fiber blanket insulation and pre-molded PVC covers. All 6) CWP Rating:80 psig(552 kPa). 0 N w
4. Subcontractor shall verify existence and location of all utility services and coordinate as required by their respective area materials shall have a smoke developed rating of 50 or less and a flame spread rating of 25 or less. Provide calcium silicate 7) Operating Temperature: Minus 20 to plus 140 deg F(Minus 29 to plus 60 deg C). J E a
of the construction, notifying the prime contractor of variations or conflicts. thermal insert at hangers and supports. Insulation shall pass uninterrupted through hangers. Vapor barriers shall be 8) Operator: Nut or flat head for key operation. - Zo
continuous,and sealed with"non-breathing"vapor barrier mastic on piping operating at temperatures below ambient. All raw 9) Include plastic valve extension. CO Q
5. If not specifically defined in these construction documents, materials and/or equipment shall be identified by the edges of insulation shall be neatly trimmed and sealed with mastic. 10) Include tamperproof locking feature for valves where indicated on Drawings.
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subcontractor with sufficient time to allow selection, purchase,and delivery to maintain construction schedule. G. Valve Boxes: glw
A. Insulation thickness below based on insulation conductivity value not exceeding 0.27 Btu*in/(hr*ft^2'°F): 1) Cast-iron,two-section box. a
6. Provide mechanical demolition as required. Dispose of all removed piping,ductwork, etc. unless noted otherwise. 2) Top section with cover with"GAS"lettering. g H w co
1) Heating water(less than 200°F)-NPS 1.25 and less, 1.5"thick; NPS 1.5 and greater,2"thick. Runouts within 4 3) Bottom section with base to fit over valve and barrel a minimum of 5 inches(125 mm)in diameter.
7. Verify exact locations of existing and new underground utilities, piping,and raceway systems prior to trenching. feet of terminal and 1"pipe diameter or less, 1"thick. 4) Adjustable cast-iron extensions of length required for depth of bury. MI 0N
Contractor shall obtain and verify exact utility company drawings and requirements. 5) Include tee-handle, steel operating wrench with socket end fitting valve nut or flat head,and with stem of length coo
35. Identification: Label all new piping and equipment. Provide full band or strip type markers and flow arrows on piping. required to operate valve. Q co
8. System shown in light line weight is existing, new indicated by heavier line weight,except where noted. Systems to be Provide engraved plastic valve tags with valve number and attach with standard chain or s-hooks. Provide engraved plastic
removed,are shown hatched. sign on or near specified equipment. 40. GAS PIPING-LABELING AND IDENTIFYING
A. Detectable Warning Tape:Acid-and alkali-resistant, PE film warning tape manufactured for marking and identifying
9. Offset new systems as necessary to accommodate structure and existing equipment. 36. GAS PIPING,TUBES,AND FITTINGS underground utilities,a minimum of 6 inches(150 mm)wide and 4 mils(0.1 mm)thick,continuously inscribed with a
A. Steel Pipe:ASTM A 53/A 53M, black steel,Schedule 40,Type E or S,Grade B. description of utility,with metallic core encased in a protective jacket for corrosion protection,detectable by metal
10. All existing support rods and straps supporting systems that are removed to allow room for installation of new system 1) Malleable-Iron Threaded Fittings:ASME B16.3, Class 150,standard pattern. detector when tape is buried up to 30 inches(750 mm)deep;colored yellow.
shall be relocated and reinstalled,or replaced if damaged. 2) Wrought-Steel Welding Fittings:ASTM A 234/A 234M for butt welding and socket welding. B. Install detectable warning tape directly above gas piping, 12 inches(300 mm)below finished grade,except 6 inches
3) Unions:ASME B16.39,Class 150, malleable iron with brass-to-iron seat,ground joint,and threaded ends. (150 mm)below subgrade under pavements and slabs.
11. It is the contractor's responsibility to perform his/her work in conformance with all applicable codes,ordinances and life 4) Protective Coating for Underground Piping: Factory-applied,three-layer coating of epoxy,adhesive,and PE.
safety features as required by local,state,or national authorities. The contractor shall verify with the architect if modification of a. Joint Cover Kits: Epoxy paint, adhesive, and heat-shrink PE sleeves. 41. OUTDOOR GAS PIPING INSTALLATION
his/her work is required for compliance. B. Corrugated, Stainless-Steel Tubing:Comply with ANSI/IAS LC 1. A. Comply with the International Fuel Gas Code for installation and purging of natural-gas piping.
1) Coating: PE with flame retardant. B. Install underground, natural-gas piping buried at least 18inches below finished grade.
12. All work of all trades must be in strict compliance,or exceed the minimum material and method requirements of the a. Surface-Burning Characteristics:As determined by testing identical products according to ASTM E 84 by a 1) If natural-gas piping is installed less than 12 inches(900 mm)below finished grade, install it in containment
2015 version of the International Building, Mechanical, Plumbing, Energy Conservation,and Fire Codes,and the 2014 qualified testing agency. Identify products with appropriate markings of applicable testing agency. conduit.
National Electrical Code, most current NFPA,all local ordinances and amendments and manufacturer's installation Flame-Spread Index:25 or less. C. Install underground, PE, natural-gas piping according to ASTM D 2774.
recommendations. If a conflict between those publications exists,the most stringent requirement shall apply. Smoke-Developed Index:50 or less. D. Steel Piping with Protective Coating:
2) Fittings:Copper-alloy mechanical fittings with ends made to fit and listed for use with corrugated stainless-steel 1) Apply joint cover kits to pipe after joining to cover,seal,and protect joints.
13. Pay for and secure all required permits and inspections. Prior to final payment,turn over to owner all certificates of tubing and capable of metal-to-metal seal without gaskets. Include brazing socket or threaded ends complying 2) Repair damage to PE coating on pipe as recommended in writing by protective coating manufacturer.
completion. with ASME B1.20.1. 3) Replace pipe having damaged PE coating with new pipe.
3) Striker Plates: Steel,designed to protect tubing from penetrations. E. Copper Tubing with Protective Coating:
14. Warranty the installation against defects in materials and workmanship. The warranty shall be for a period of one year 4) Manifolds: Malleable iron or steel with factory-applied protective coating.Threaded connections shall comply 1) Apply joint cover kits over tubing to cover,seal,and protect joints.
after Owner's acceptance. Defects shall be promptly remedied without cost to the Owner. with ASME B1.20.1 for pipe inlet and corrugated tubing outlets. 2) Repair damage to PE coating on pipe as recommended in writing by protective coating manufacturer.
5) Operating-Pressure Rating:5 psig(34.5 kPa). 3) Install fittings for changes in direction and branch connections.
15. Submit record documents to owner. Documents shall include all addendum items,change orders,alterations, C. Annealed-Temper Copper Tube: Comply with ASTM B 88,Type K(ASTM B 88M,Type A)or ASTM B 88,Type L F. OUTDOOR PIPING SCHEDULE
re-routings, etc. (ASTM B 88M,Type B). 1) Underground natural-gas piping shall be one of the following:
1) Copper Fittings:ASME B16.22,wrought copper,and streamlined pattern. a. PE pipe and fittings joined by heat fusion; service-line risers with tracer wire terminated in an accessible
16. Systems shall be complete, operable,and ready for continuous operation prior to acceptance by the Owner. 2) Flare Fittings: Comply with ASME B16.26 and SAE J513. location.
a. Copper fittings with long nuts. b. Steel pipe with wrought-steel fittings and welded joints.Coat pipe and fittings with protective coating for
17. Systems shall be tested for proper operation. Perform at a minimum all code required tests or systems. If tests of work b. Metal-to-metal compression seal without gasket. steel piping.
are defective,contractor shall make corrections necessary at no additional cost to Owner. c. Dryseal threads complying with ASME B1.20.3. c. Annealed-temper copper tube with wrought-copper fittings and brazed joints.Coat pipe and fittings with
3) Protective Coating for Underground Tubing: Factory-applied,extruded PE a minimum of 0.022 inch(0.56 mm) protective coating for copper tubing. W
18. All materials and/or equipment shall be handled and installed as per manufacturer's specifications and thick. 2) Aboveground natural-gas piping shall be one of the following: 0
recommendations. D. PE Pipe:ASTM D 2513, SDR 11. a. Steel pipe with malleable-iron fittings and threaded joints. Q
1) PE Fittings:ASTM D 2683,socket-fusion type or ASTM D 3261, butt-fusion type with dimensions matching PE b. Steel pipe with wrought-steel fittings and welded joints. Et
19. Provide necessary trenching, backfill,excavation,supports, saw-cutting and patching,concrete/paving,etc.,as required. pipe. c. Annealed-temper copper tube with wrought-copper fittings and brazed joints. 0
Backfill trenches in 6"layers and to 90%compaction and patch to match grade. 2) PE Transition Fittings: Factory-fabricated fittings with PE pipe complying with ASTM D 2513,SDR 11; and steel
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pipe complying with ASTM A 53/A 53M, black steel,Schedule 40,Type E or S,Grade B. 42. GAS VALVE INSTALLATION
20. Provide 4"high concrete equipment pads beneath floor mounted mechanical equipment, in addition to any base A. Install manual gas shutoff valve for each gas appliance ahead of corrugated stainless-steel tubing or copper
assemblies required or recommended by the manufacturer. 37. GAS PIPING SPECIALTIES connector. - 06 ti
A. Appliance Flexible Connectors: B. Install underground valves with valve boxes. Q z Lf'
21. Fire stopping requirement. Penetrations through rated walls and floors shall be sealed with a material capable of 1) Outdoor,Appliance Flexible Connectors: Comply with ANSI Z21.75. C. Install anode for metallic valves in underground PE piping. \ 0
reventin the passage of flames and hotgasses when subjected to the requirements of the test standard specific for fire 2) Corrugated stainless-steel tubingwith polymer coating. D. ABOVEGROUND MANUAL GAS SHUTOFF VALVE SCHEDULE / CO
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stops ASTM-E-814. Acceptable materials include: DOW corning RTV fire stop foam for bare pipe, metal conduit,and 3) Operating-Pressure Rating:0.5 psig(3.45 kPa). 1) Valves for pipe sizes NPS 2(DN 50)and smaller at service meter shall be one of the following: I (I)
electrical cable; 3M Fire Dam 150 caulk for bare pipe, metal conduit,and building construction gaps; 3M CP-25 caulk and 4) End Fittings:Zinc-coated steel. a. One-piece, bronze ball valve with bronze trim. w z 0
O FS-195 intumescent strips for insulated pipes, plastic pipe or conduit, and electrical cable. Submit UL listed application data 5) Threaded Ends: Comply with ASME B1.20.1. b. Two-piece,full-port, bronze ball valves with bronze trim. Q 0
Qfor each type of penetration encountered. 6) Maximum Length: 72 inches(1830 mm.) c. Bronze plug valve. W W Q
2) Distribution piping valves for pipe sizes NPS 2(DN 50)and smaller shall be one of the following: Q X C2
22. Coordinate architectural,structural, mechanical,fire protection,electrical, landscaping, and interior design drawings 38. GAS PIPING JOINING MATERIALS a. One-piece, bronze ball valve with bronze trim. W O
gprior to installation. A. Joint Compound and Tape:Suitable for natural gas. b. Two-piece,full regular-port, bronze ball valves with bronze trim.
o B. Welding Filler Metals:Comply with AWS D10.12/D10.12M for welding materials appropriate for wall thickness and c. Bronze plug valve. LLI J
4 23. Carefully verify electrical service voltage and phase available.Coordinate power connections for new boiler, pumps, and chemical analysis of steel pipe being welded. 3) Valves in branch piping for single appliance shall be one of the following: J W O
controls with electrical contractor. C. Brazing Filler Metals:Alloy with melting point greater than 1000 deg F(540 deg C)complying with AWS A5.8/A5.8M. a. One-piece, bronze ball valve with bronze trim. H U
Brazing alloys containing more than 0.05 percent phosphorus are prohibited. b. Two-piece,full-port, bronze ball valves with bronze trim. J
O 24. Submit a written balance report by a NEBB or AABC certified balancing contractor. Balancing procedures shall be in c. Bronze plug valve
Z accordance with NEBB or AABC guidelines for proportional balance. Submit report on standard NEBB forms or submit forms 39. MANUAL GAS SHUTOFF VALVES
0 (1). Q
Qfor review prior to balancing. Measurements shall include water flow at all flow measurement stations; inlet and outlet A. General Requirements for Metallic Valves, NPS 2(DN 50)and Smaller:Comply with ASME B16.33.
CC pressure at pumps with flow calculated from the pump curve;water flow,temperature drop,and pressure drop at all coils. 1) CWP Rating: 125 psig(862 kPa). 43. GAS PIPING JOINT CONSTRUCTION J
0 2) Threaded Ends: Comply with ASME B1.20.1. A. Ream ends of pipes and tubes and remove burrs. W
Z25. Provide 1/4"galvanized mesh screen on all combustion air ducts or openings. 3) Dryseal Threads on Flare Ends:Comply with ASME B1.20.3. B. Remove scale,slag,dirt,and debris from inside and outside of pipe and fittings before assembly. 2
4) Listing: Listed and labeled by an NRTL acceptable to authorities having jurisdiction for valves 1 inch(25 mm) C. Threaded Joints:
Z26. Support pipe with rod and clevis, ring hangers,trapeze,or clamps. No pipe tape or strapping allowed. All hangers shall and smaller. 1) Thread pipe with tapered pipe threads complying with ASME B1.20.1.
be sized for OD of insulation, if any. Protect insulated lines with 20 ga sheet metal shields and provide calcium silicate 5) Service Mark:Valves 1-1/4 inches(32 mm)to NPS 2(DN 50)shall have initials"WOG"permanently marked on 2) Cut threads full and clean using sharp dies. 0
Lu insulation inserts for all insulated piping. Maintain vapor barrier on all cold lines. Isolate bare copper lines from hangers with valve body. 3) Ream threaded pipe ends to remove burrs and restore full inside diameter of pipe. Z
Vibrasorb or equivalent,copper coated hangers are not sufficient,wrapping pipe with tape not acceptable. B. One-Piece, Bronze Ball Valve with Bronze Trim: MSS SP-110. 4) Apply appropriate tape or thread compound to external pipe threads unless dryseal threading is specified. Cl)
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1) Body: Bronze,complying with ASTM B 584. 5) Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or damaged. Do not use pipe
w 27. Copperpipe valves and specialties Q P P P 2) Ball:Chrome-plated brass. sections that have cracked or open welds.
CC 3) Stem: Bronze; blowout proof. D. Welded Joints:
O A. Gate valves-bronze,class 125,200 lb.w.o.g. 4) Seats: Reinforced TFE; blowout proof. 1) Construct joints according to AWS D10.12/D10.12M, using qualified processes and welding operators.
o- B. Ball valves-bronze,class 125,600 lb.w.o.g. 5) Packing:Separate packnut with adjustable-stem packing threaded ends. 2) Bevel plain ends of steel pipe.
0 C. Check valves-bronze,class 125, 200 lb.w.o.g. 6) Ends:Threaded,flared,or socket as indicated in"Underground Manual Gas Shutoff Valve Schedule"and 3) Patch factoryapplied protective coating as recommended by manufacturer at field welds and where damage to
wD. Balancing valves-125 psi w.p. For 250 degree Fahrenheit service tight shutoff,Tour and Anderson STA,Armstrong "Aboveground Manual Gas Shutoff Valve Schedule"Articles. coating occurs during construction.
CBV, Gerand,or Flowset, B&G circuit setter. 7) CWP Rating: 600 psig(4140 kPa). E. Brazed Joints: Construct accordingto AWS's"BrazingHandbook,""Pipe and Tube"Chapter.
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v) E. Direct unions: Furnish and install a dielectric union at each connection between dissimilar metals. 8) Listing:Valves NPS 1 (DN 25)and smaller shall be listed and labeled by an NRTL acceptable to authorities F. Flared Joints: Cut tubing with roll cutting tool. Flare tube end with tool to result in flare dimensions complying with Current Issue:
having jurisdiction. SAE J513.Tighten finger tight,then use wrench. Do not overtighten.
w 28. Provide expansion joints or loops on all snowmelt and heating water piping runs in excess of 50 feet and in accordance 9) Service:Suitable for natural-gas service with"WOG"indicated on valve body. G. PE Piping Heat-Fusion Joints:Clean and dry joining surfaces by wiping with clean cloth or paper towels.Join PERMIT SET
0 2 with the manufacturer's recommendations. C. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: MSS SP-110. according to ASTM D 2657.
1) Body: Bronze,complying with ASTM B 584. 1) Plain-End Pipe and Fittings: Use butt fusion.
Z 29. Fill heating water system with 30%propylene glycol/water solution and fill snowmelt system with 50%propylene 2) Ball:Chrome-plated bronze. 2) Plain-End Pipe and Socket Fittings: Use socket fusion.
O glycol/water solution. 3) Stem: Bronze; blowout proof.
H4) Seats: Reinforced TFE; blowout proof. 44. GAS PIPING CONNECTIONS Issued:
30. Grade and valve all heating and snowmelt water piping with 3/4"hose end valves to permit complete drainage of the 5) Packing:Threaded-body packnut design with adjustable-stem packing. A. Connect to utility's gas main according to utility's procedures and requirements.
>X system. Vent all high points in equipment rooms as necessary with automatic air vents piped to convenient drain. All high 6) Ends:Threaded,flared,or socket as indicated in"Underground Manual Gas Shutoff Valve Schedule"and B. Install natural-gas piping electrically continuous,and bonded to gas appliance equipment grounding conductor of the PERMIT SET 10.10.2017
points in system outside of equipment rooms with combination automatic/manual air vents as required to relieve air in the "Aboveground Manual Gas Shutoff Valve Schedule"Articles. circuit powering the appliance according to NFPA 70.
Q system. 7) CWP Rating: 600 psig(4140 kPa). C. Install piping adjacent to appliances to allow service and maintenance of appliances.
> 8) Listing:Valves NPS 1 (DN 25)and smaller shall be listed and labeled by an NRTL acceptable to authorities D. Connect piping to appliances using manual gas shutoff valves and unions. Install valve within 72 inches(1800 mm)
w 31. Provide plastic grommets on all heating water piping passing through wood joists and studs. having jurisdiction. of each gas-fired appliance and equipment. Install union between valve and appliances or equipment.
CC 9) Service:Suitable for natural-gas service with"WOG"indicated on valve body. E. Sediment Traps: Install tee fitting with capped nipple in bottom to form drip,as close as practical to inlet of each
w 32. Materials; hydronic piping D. Two-Piece, Regular-Port Bronze Ball Valves with Bronze Trim: MSS SP-110. appliance.
c01 Body: Bronze,complyingwith ASTM B 584.
m A. Above grade, up through 2-1/2": schedule 40 steel pipe with malleable iron threaded fittings,or Type"L"copper tube 2) Ball:Chrome-plated broze.
OD with wrought copper fittings and 95-5 no lead solder. 3) Stem: Bronze; blowout proof.
0 4) Seats: Reinforced TFE.
o B. Below grade, all sizes:jacketed, pre-insulated piping, Uponor EcoFlex thermal single or twin hePEX or equal.All 5) Packing:Threaded-body packnut design with adjustable-stem packing.
4 buried pipe shall be surrounded with 4"of clean sand. 6) Ends:Threaded,flared,or socket as indicated in"Underground Manual Gas Shutoff Valve Schedule"and
o) "Aboveground Manual Gas Shutoff Valve Schedule"Articles.
H 1) Option for piping 1-1/4"and smaller: Type"K"soft annealed copper tube,single length to avoid fittings, 7) CWP Rating: 600 psig(4140 kPa).
U (wrought copper fittings where unavoidable)and 1100 degree Fahrenheit solder insulate with 1"thick closed cell 8) Listing:Valves NPS 1 (DN 25)and smaller shall be listed and labeled by an NRTL acceptable to authorities
w elastomeric insulation.
having jurisdiction.
O 9) Service:Suitable for natural-gas service with"WOG"indicated on valve body. Sheet Title:
CC C. Snowmelt serpentine tubing: E. Bronze Plug Valves: MSS SP-78.
O 1) Body: Bronze,complying with ASTM B 584. MECHANICAL
m 1) All tubing to be cross-linked polyethylene(PEX)with an oxygen diffusion barrier. Tubing to be rated for 2) Plug: Bronze.
continuous operation of 100 psig and a temperature suitable for the specific application. Factory manifolds shall 3) Ends:Threaded,socket,as indicated in"Underground Manual Gas Shutoff Valve Schedule"and"Aboveground SPECIFICATIONS
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j Date: 10.10.2017
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