A. American Society for Testing and Materials (ASTM):

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1 SECTION PIPING (HVAC) PART 1 GENERAL 1.01 SUMMARY A. Related Sections: Firestopping and Fire and Smoke Barrier Caulking Valves and Specialties (HVAC) HVAC Control System Tests (HVAC) REFERENCES A. American Society for Testing and Materials (ASTM): 1. A47-90(95) Specification for Ferritic Malleable Iron Castings. 2. A53-96 Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless. 3. A183-83(90) Specification for Carbon Steel Track Bolts and Nuts. 4. A197-87(92) Specification for Cupola Malleable Iron. 5. A234/A-96b Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service. 6. A536-84(93) Specification for Ductile Iron Castings. 7. B32-96 Specification for Solder Metal. 8. B88-96 Specification for Seamless Copper Water Tube. 9. D Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds SUBMITTALS A. Pipe and Fittings: Manufacturer's name and mill test reports. B. Piping Systems: 1/4" to 1 foot scale shop drawings. PART 2 PRODUCTS Project No. GUIDELINE SPECIFICATIONS

2 2.01 MATERIALS Size Description A. TYPE "A" PIPING. 1. Pipe: To 16" Schedule 40, black steel per ASTM A53 Grade A or B seamless. 2. Fittings: To 2" 150 pound malleable iron per ASTM A197 screwed. 2-1/2" Schedule 40, black steel, and above seamless welding per ASTM A Unions: To 2" ASTM A47, 300 pound wsp malleable iron, screwed, ground joint type. 4. Flanges: All sizes Threaded: ANSI B15.1, 125 lb. class, cast iron, or ANSI B pound class ductile iron. 5. Flanges: All Sizes Welded: ANSI B16.5, 150 pound primary steam rated, black steel, flat-faced, welding neck. B. TYPE "B" PIPING 1. Pipe: To 2" Copper per ASTM B88, Type "L" hard drawn. 2. Fittings: To 2" Wrought copper, solder joint type per ANSI B16.22 made with 95-5 or silver solder per ASTM B32, as specified. C. TYPE "C" PIPING 1. Pipe: To 2" PVC, chemical resistant, ASTM D1784. D. TYPE "D" PIPING (Underground) 1. Pipe: To 4" Thickness Class 51, ductile Project No. GUIDELINE SPECIFICATIONS

3 iron pipe per ANSI/AWWA C150/ A21.50 and ANSI/AWWA C151/ A Pipe 6" and Thickness Class 50, above ductile iron pipe per ANSI/AWWA C150/ A21.50 and ANSI/AWWA C151/ A Fittings: All Sizes Ductile Iron: Mechanical joints per ANSI A21.11; AWWA/ C111; restrained joints per ANSI A21.51; rubber gaskets and lubricants per ANSI A Flanges: All Sizes ANSI A21.10, PSI working pressure. 5. Manufacturer: American Cast Iron Pipe Company or accepted equivalent. E. Type "E" Piping (Underground): 1. Underground piping system shall consist of integral sealed units insulated with rigid polyurethane foam sealed with polyethylene or PVC outer jacket and compression fitted rubber end seals: 2. Pipe: All sizes Pipe shall be as specified for Type "A" or "B" piping as indicated. 3. Insulation: All sizes Rigid 90 to 95 percent closed cell polyurethane with 1.9 to 3.0 lbs./cu.ft. density and as thermal conductivity (K) of 0.14 to 0.17 BTU/sq.ft./ of./inch at 73 degrees F. 4. Jacket: All sizes Type I, Grade 1 PVC with a minimum wall thickness of inches, HDPE, or FRP. 5. Fittings: All sizes ASTM A234, Schedule 40. Fittings shall be coated in the field (Ricwil "Rip-Coat or equivalent). Project No. GUIDELINE SPECIFICATIONS

4 6. Manufacturers: a. Steel-Gard by Ricwil. b. Heat Tite by Thermal Pipe Systems Inc. c. Insul-8 by Rovanco Corp. d. Insul-Tek, Mulberry, FL. e. Thermacor Process, Inc. 1) Ferro-Therm (Welded) 2) Ferro-Therm D.I. (Gasketed) 3) Copper-Therm (Brazed). f. U.I.P. by Urecon, Melbourne, FL. F. Type "F" Piping (Refrigerant) 1. Pipe: To 3" Copper tubing per ASTM B88 a, type "K" hard drawn, with silver soldered connections. 2. Fittings: To 3" Wrought copper, soldered type. Where required for connection to gauges and control devices tubing not larger than 3/8" o.d. may be Type K soft (annealed) with flared tube or double ferrule compression fittings suitable for high pressure. PART 3 EXECUTION 3.01 INSTALLATION A. Furnish and install as shown on Construction Documents, or as necessary to complete working systems according to Construction Documents, a system of piping and valves to control and isolate apparatus and appurtenances. 1. Construction Documents are diagrammatic and indicate general location and connections. 2. Piping may be offset, lowered, or raised as required or as directed at site. This does not relieve Contractor from responsibility for proper erection of systems of piping in every respect suitable for the work intended according to specifications and accepted by A/E. B. Arrangement: Project No. GUIDELINE SPECIFICATIONS

5 1. Piping shall not interfere with removal of other equipment or devices. 2. Piping shall not block access to doors, windows, panels, or other access openings. Piping shall be arranged to facilitate removal of tube bundles. 3. Provide flanges or unions, as applicable for type of piping specified, in piping at connections to equipment and piping interfering with access or tube pull space. 4. Place and install piping to not interfere with installation of the equipment and ducts. 5. Piping shall be installed to insure noiseless circulation. 6. Place valves and specialties to allow easy operation and access, and valves shall be regulated and packed and glands adjusted at completion of work before acceptance. 7. Piping shall be erected and pitched to insure proper draining. C. Connections: 1. Install piping connections to pumps and other equipment without strain at piping connection. 2. Contractor shall be required as directed to remove bolts in these flanged connections or disconnect piping to demonstrate that piping has been so connected. 3. Provide at pump suction and discharge flexible connections with ends to match connecting pipe. D. Where equipment requiring different arrangement or connections from those shown is accepted, it shall be responsibility of Contractor to install equipment to operate properly and with intent of Construction Documents and specifications. 1. When directed by A/E, submit documents showing proposed installation. 2. If proposed installation is accepted, make incidental changes in piping, duct work, supports, insulation, wiring, heaters, panelboards, etc. Provide additional motors, controllers, valves, fittings, and other additional equipment required for proper operation of system resulting from selection of equipment, including required changes in affected trades. E. Cut pipe accurately to measurements established at building, work into place without springing or forcing, and properly clear windows, doors, and other openings. Cutting Project No. GUIDELINE SPECIFICATIONS

6 or other weakening of building structure to facilitate piping installation will not be allowed unless accepted by A/E. F. Install piping mains, branches, and runouts to allow for free expansion and contraction without developing leaks or undue stressing of pipe. Stresses to be within allowable limits of ANSI Code B for pressure piping. G. Pipe Sizes: If size of any piping is not evident in Construction Documents, request instructions from A/E as to proper sizing. Changes resulting from Contractor's failure to request clarification shall be at his expense. H. In mechanical rooms, avoid piping runs over electrical panels and other electrical equipment, if necessary provide a suitable sheet metal shield or gutter. Submit shop drawings showing proposed shielding at each location. I. Each mechanical trade is responsible for lines and levels of ductwork and piping based on reference lines and bench marks established by General Contractor for general work. J. Provide the following: 1. Di-electric couplings between dissimilar metals. 2. Drain valves at low points of each system to enable complete drainage. Valves shall be full line size. 3. Capped hose connections on drain valves. 4. Drain piping from pump glands, relief valves, to spill over open sight drains, floor drains, or other acceptable discharge points terminating drain line with plain end (unthreaded) pipe. 5. Caps of plugs for open ends of pipe lines and equipment during installation to keep dirt and other foreign matter out of pipe and equipment. 6. Temporary cross-connections, valves, oversize flushing connections, and pumps required to thoroughly flush systems. 7. Shut-off valves and unions or flanges at each branch and in supply and return to each item of equipment such as pumps, coils, automatic valves, etc., for isolation of equipment without complete system shutdown. 8. Gate valve on capped services for extension to equipment furnished under other sections or by the Board when shown on Construction Documents. 9. Expansion loops with adequate anchors and guides to absorb pipe expansion as shown on Construction Documents or as required. Expansion joints are Project No. GUIDELINE SPECIFICATIONS

7 acceptable if accepted in advance by A/E. 10. Safety relief piping from fusible plugs, safety valves, relief valves, etc., full relief port size from equipment equipped with these devices, whether shown on Construction Documents or not. Discharge pipe safety relief piping to the building exterior in an accepted manner. 11. Auxiliary cooling piping and connections for compressors, etc., whether shown on the Construction Documents or not. K. Cleaning and Flushing: Take every precaution to remove dirt, grease, and other foreign matter from each length of piping before making connections in field. After each section of piping is installed, flush with clean water, except where specified otherwise. A temporary flushing connection shall be arranged for each section of piping and flushing arranged for all piping. Water required for flushing shall be furnished by Contractor. L. Threads on screwed piping shall be clean cut to exact length. Ream piping after cutting threads. Accepted joint compound shall be applied to male thread only. Lamp wick in joints is prohibited. M. Welded piping shall be cleaned free of rust, scale and oxide. Pipe shall be beveled at each end and backing rings shall be used on systems with 2-1/2" and greater pipe size. After welding, pipe shall be hammer cleaned and flushed to remove scale, welding slag and other debris. If weld contains any defects, it shall be repaired to satisfaction of A/E. N. Welded piping shall be according to ANSI B , Power Piping, Chapter 4, Section VI. Welder shall be qualified per Section IX of the A.S.M.E. Boiler and Pressure Vessel Code. List of welders with date of last certification shall be available at job site. Safety procedures shall conform to ANSI Z O. Long radius elbows shall be used except where space conditions do not allow and where indicated. P. Reduction in pipe sizes shall be made with eccentric reducers or reducing elbows. Bushings are not allowed. Reducers in water piping shall have flat side up to facilitate venting PIPING TYPE Project No. GUIDELINE SPECIFICATIONS

8 A. Above ground chilled water, hot water and condenser water piping shall be Type "A" piping. B. Below ground condenser water piping shall be Type "D" piping. C. Below ground chilled water and hot water piping shall be Type "E" piping. D. Make-up water and pump drainage piping shall be Type "B" piping. E. Chemical treatment piping shall be Type "C". F. Refrigerant piping shall be Type "F" OPTION: At the Contractor's option, the following type connections may be used for aboveground chilled water pipe in equipment rooms and condensing water systems only, instead of the screwed/welded connections specified for type "A" pipe and fittings. A. Mechanical Pipe Couplings: 1. Mechanical pipe couplings may be used instead of unions or welded, flanged, or screwed pipe connections. 2. Couplings shall be self-centering and shall engage and lock in place grooved or shouldered pipe and pipe fitting ends in a positive watertight couple. Fittings shall provide some degree of angular pipe deflection, contraction and expansion. 3. Coupling housing clamps shall consist of 2 or more malleable iron castings complying with ASTM A47. Housing clamps shall hold in place a composition watersealing gasket designed to allow internal water pressure increase the seal's watertightness. 4. Coupling assembly shall be securely held together by 2 or more trackhead, square or oval neck, steel bolts. Bolts and nuts shall be heat treated carbon steel and shall be according to ASTM Al Pipe fittings connected to mechanical pipe couplings shall have grooved or shouldered ends and shall be fabricated of malleable iron casting according to ASTM A47 or ductile iron Grade according to ASTM A Before couplings are assembled, pipe ends and outsides of gaskets shall be lightly coated with cup grease or graphite paste to ease installation. Project No. GUIDELINE SPECIFICATIONS

9 7. Pipe grooving shall be according to pipe coupling manufacturer's specifications. Pipe sizes 3/4" through 24 inches may be cut-grooved or roll-grooved, except that pipe and tubing with wall thicknesses less than minimum recommended by manufacturer for cut-grooving shall be roll-grooved without removal of and metal. 8. Pipes, fittings and valves shall be provided with grooved or shouldered ends according to pipe coupling manufacturer's guidelines. Flanged or threaded end valves may be used with grooved adapters. 9. Couplings and fittings shall have a working pressure of 125 psig or 150 percent of system operating pressure, whichever is greater. 10. Entire coupling installation shall be according to manufacturer's guidelines. 11. Couplings shall be manufactured by Victaulic or Gustin- Bacon PIPE JOINTS, FITTINGS, AND CONNECTIONS TO VALVES AND EQUIPMENT AND BENDS IN PIPING A. 2 inches and smaller shall be made with screwed fittings and B. 2-1/2" and larger shall be made with welded and flanged fittings REFRIGERANT PIPING A. Install refrigerant piping to insure continuous automatic return of oil to compressors at system capacities. Oil traps shall be properly sized, located, and installed. Install piping according to standard engineering practice as recognized by ASHRAE. B. Refrigerant piping shall be installed to allow removal of DX coil. C. Refrigerant pipe shall be cut with an accepted type of pipe cutter and reamed before brazing. Pipe shall pitch sharply toward the reamer during reaming and cuttings shall be carefully removed after reaming. Moisture and dirt shall be removed from piping before joining as follows: 1. A clean, lintless cloth shall be drawn through the tubing by means of wire or an electrician's tape, to remove coarse particles of dirt and dust. 2. A clean, lintless cloth saturated with trichloroethylene shall be pulled through pipe, until the saturated cloth is not discolored by dirt. Project No. GUIDELINE SPECIFICATIONS

10 3. A clean, lintless cloth saturated with compressor oil, squeezed dry, shall be drawn through the tubing. A visual inspection shall be made to see that tubing is perfectly clean. 4. Cleaning shall be completed by pulling through a clean, dry, lintless cloth. D. Joints shall be brazed with silver solder containing 49 percent silver and having a melting point of 1,120 degrees F. E. Pressure test lines before charging. When testing is complete, evacuate lines by the double evacuation method, breaking each vacuum with the system refrigerant to 5.16 mm of pressure absolute. Bring first vacuum break to 2 psig and final break to normal operating pressure. The compressor shall not be used to evacuate the system PIPING PENETRATIONS TO FLOORS AND FIRE WALLS: A. Joints around pipe penetrations shall be packed with fire safing insulation and sealed with fire and smoke barrier caulk as specified in Section Firestopping and Fire and Smoke Barrier Caulking UNDERGROUND CHILLED AND HOT WATER PIPING: A. Fittings and O-ring slip couplings shall be installed according to manufacturer's recommendations. B. The services of a factory trained field service instructor shall be required during critical stages of installation and testing. C. After thrust blocks are poured and cured, a hydrostatic test of 125 psig (1-1/2 times operating pressure) shall be required for 4 hours. D. After hydrostatic test, a final backfill of selected earth shall be hand-placed and hand-tamped in 4 inch layers to 12 inches minimum over the top of the jacket. Remainder of the backfill shall be free of large boulders, rocks over 6 inches in diameter or foreign matter. The backfill operation can now be completed by any convenient means. Do not use tracked or wheeled vehicles for tamping. END OF SECTION Project No. GUIDELINE SPECIFICATIONS

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15510 PIPING (HVAC) ************************************************************************************************************* SPECIFIER: CSI MasterFormat 2004 number: 23 21 13 *************************************************************************************************************