. 1.2 APPLICABLE PUBLICATIONS

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1 SECTION PART 1 - GENERAL 1.1 PIPING SYSTEM STANDARDS OF MATERIALS A. Piping and fitting materials shall conform to the specification standards of the recognized authorities listed below. References shall be to the latest edition in force at the time of bidding. B. Materials listed below shall be subject to approval of local governing authorities. C. Where plumbing systems connect to equipment provided or installed under the HVAC section of the specifications, the Plumbing Contractor shall terminate the plumbing systems within 5 feet of final connection point of the equipment with a shutoff valve as specified in the plumbing valve section. Final connection to the equipment provided or installed under the HVAC Section shall be made by the HVAC Contractor. Final connection shall include additional valves, strainers, control valves, check valves, miscellaneous connections, etc. as shown on mechanical details, mechanical drawings, or as specified herein. D. Each pipe length shall have the manufacturer's name cast, stamped, or rolled on. E. Each fitting shall have the manufacturer's symbol and pressure rating cast, stamped, or rolled on APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification. B. Federal Specifications (Fed. Spec.): L-C-530C... Coating, Pipe, Thermoplastic Resin L-T-1512A... Tape, Pressure Sensitive Adhesive, Pipe Wrapping 0-C-114B(2)... Calcium Hypochlorite, Technical 0-S-602E... Sodium Hypochlorite Solution BB-C-120C... Chlorine, Technical, Liquid WW-V-35C... Valve Ball Brass or Bronze WW-V Valve, Butterfly (Threaded Ends And Solder Ends) C. American National Standards Institute (ANSI): American Society of Mechanical Engineers (ASME): (Copyrighted Society) A M Floor Drains ANSI/ASME B Malleable Iron Threaded Fittings ANSI/ASME B Cast Iron Threaded Fittings Classes 125 and 250 ANSI/ASME B Factory-Made Wrought Steel Buttwelding Fittings ANSI/ASME B Forged Steel Fittings, Socket-Welding and Threaded ANSI/ASME B Cast Iron Threaded Drainage Fittings ANSI/ASME is

2 B Cast Bronze Threaded Fittings ANSIASME B Cast Copper Alloy Solder-Joint Pressure Fittings ANSI/ASME B Wrought Copper and Copper Alloy Solder Joint Pressure Fittings ANSI/ASME B Pipe W elding B Gas Transmission and Distribution Piping Systems ANSI/ASME B Gauges-Pressure Indicating Dial Type-Elastic Element ANSI/ASME D. American Society for Testing and Materials (ASTM): A Ferritic Malleable Iron Castings Revision 1989 A Pipe, Steel, Black And Hot-Dipped, Zinc-coated Revision A Welded and Seamless A Cast Iron Soil Pipe and Fittings A Carbon Steel Track Bolts and Nuts A Pipe Fittings of Wrought Carbon Steel and Alloy Steel A Seamless and Welded Austenitic Stainless Steel Pipe A Ferritic Ductile Iron Pressure Retaining Castings A Ductile Iron Castings A Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples B Solder Metal B Steam or Bronze Castings B Composition Bronze or Ounce Metal Castings B Seamless Copper Tube B Seamless Copper Water Tube B Copper Sheet B Copper Drainage Tube (DWV) B Copper Alloy Sand Castings for General Applications, Revision A B Brass, Copper, and Chromium-Plated Pipe Nipples C Rubber Gaskets for Cast Iron Soil Pipe and Fittings D Rubber Products in Automotive Applications D Propylene Plastic Molding and Extrusion Materials D Polyethylene (PE) Plastic Pipe, Schedule 40 and 80, Based on Outside Diameter D Solvent Cements for Poly (Vinyl Chloride) (PVC) Pipe Plastic Pipe and Fittings D Poly (Vinyl Chloride) (PVC) Plastic Drain, Waste, and Revision A Vent Pipe and Fittings D Propylene Plastic Injection and Extrusion Materials E. American Water Works Association (AWWA): C Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or Sand-Lined Molds, for Water or Other Liquids

3 C Coal-Tar Protective Coatings and Linings for Steel Water Pipelines - Enamel and Tape - Hot Applied C Grooved and Shouldered Joints C Disinfecting Water Mains C Cold Water Meters-Turbine Type, for Customer Service F. National Fire Protection Association (NFPA): National Fuel Gas Code G. American Welding Society (AWS): A Filler Metals for Brazing H. National Association of Plumbing - Heating - Cooling Contractors (PHCC): National Standard Plumbing Code I. Cast Iron Soil Pipe Institute (CISPI): Hubless Cast Iron Soil and Fittings J. International Association of Plumbing and Mechanical Officials (IAPMO): Uniform Plumbing Code IS Installation Standard K. Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. (MSS): SP Cast Iron Gate Valves, Flanged and Threaded Ends. L. American Society of Sanitary Engineers (ASSE): Water Pressure Reducing Valves Water Hammer Arresters Pipe Applied Atmospheric Type Vacuum Breakers Reduced Pressure Principle Backflow Preventers Double Check Backflow Prevention Assembly Vacuum Breakers, Anti-Siphon, Pressure Type M. Factory Mutual (FM): Coupling Used in Hubless Cast Iron Systems for Drains, Waste and Vent Systems

4 Delaware County Community College Project # PART 2 - PRODUCTS 2.1 PIPING AND FITTINGS MATERIAL SCHEDULE A. Piping systems shall be constructed of the following materials as scheduled below, subject to approval by authorities having jurisdiction. Systems Pipe Fittings Remarks Relief valve discharge Type L hard drawn Cast bronze or piping for water copper tubing with wrought copper systems 95-5 tin antimony with solder joints solder joints Interior building Type L hard drawn Cast bronze or Provide dielectric hydronic heating copper tubing with wrought copper unions for ferrous to system piping 2 inches 95-5 tin antimony with solder joints non-ferrous pipe and smaller solder joints connections Schedule 40 black steel pipe. Standard weight above 10 inches Screwed cast iron H malleable iron fittings Interior building Schedule 40 black Welded steel Provide dielectric hydronic heating steel pipe. Standard fittings unions for ferrous to system piping weight above non-ferrous pipe 2-1/2 inch and larger 10 inches connections Interior building or Type L hard drawn Cast bronze or Fitting pressure above ground domestic copper tubing with wrought copper rating per ANSI water systems, 4 inches 95-5 tin antimony with solder joints B16.22, B16.18, and smaller (cold, hot & solder joints 125 lb. steam and hot water circulating 300 lb. steam systems) Schedule 40 black Victaulic flexible Permitted in areas steel pipe. Standard Style 75 or 77 or without ceilings only. weight above rigid style Not permitted in 10 inches couplings with shafts. grooved end pipe Cooling coil condensate Type L hard drawn Cast bronze or piping copper tubing with wrought copper 95-5 tin antimony with solder joints solder joints

5 November 23, PIPE HANGERS AND SUPPORTS ia General 1. Provide all required supports and hangers for the items included in the work. Hanger design and spacing shall conform to ANSI Code B for Pressure Piping and the Manufacturers' Standardization Society of the Valve and Fitting Industry (MSS) SP-58 and SP-69, unless supplemented or modified herein. 2. Submit for approval product bulletins with figure numbers of supports, hangers and inserts proposed for the various conditions and services. 3. Supports shall secure pipes in place, prevent swaying and vibration, maintain required pitch by proper adjustment, and provide free expansion and contraction. Design supports to suit the loading and service, and not over stress the building structure. 4. Hanger rods shall be threaded 1-1/2 inch on each end or all-threaded cadmium plated or galvanized steel. All hangers, rollers, and supports that are not plated shall be factory painted with a red oxide primer and black enamel finish. 5. Specified bracket clamp and rod sizes are minimum size. Support and hanger design shall include a safety factor of Where several pipes 4 inches in diameter and smaller can be installed in parallel at the same level, approved type trapeze hangers may be used in lieu of separate clevis hangers, with suspension rods having double nuts and securely attached to the building structure in an approved manner. Brace trapeze hangers to prevent motion due to expansion and contraction of pipe. Support individual pipes on trapeze by saddles and rollers. For trapeze hanger spacing, use the maximum support spacing listed for the smallest pipe on the trapeze. 7. Plastic coated hangers and clamps shall be provided for uninsulated brass or copper pipes, unless shields are provided between hangers or clamps and uninsulated brass or copper pipes. 8. Provide all supplemental steel required for support of pipes other than steel shown on the structural drawings. 9. Do not hang one pipe from another pipe, conduit, or ductwork. 10. Do not use perforated band iron, wire, or chains as pipe hangers. 11. Support piping as close as practical to heavy load concentrations such as vertical runs, branch connections, valves, and other pipe accessories such as air separators and strainers. a. Locate supports adjacent to both sides of control valves or pipe sections shown to be removable. b. Locate supports adjacent to branch shutoff valves to permit removal of branch piping without the installation of temporary supports. c. Support piping on at least one side and adjacent to each change in direction. d. Provide additional supports as specified elsewhere when grooved pipe construction is employed

6 12. Hangers for insulated pipes shall be sized to clear the outside diameter of the insulation, unless otherwise noted. 13. All supports and hangers for horizontal piping shall be provided with a means of vertical adjustment after erection. All turnbuckles shall be provided with one lock nut. All rod connections to hangers and attachment devices shall be provided with two (2) nuts. 14. Inserts for pipe hangers shall be of a type that does not interfere with structural reinforcing and does not displace excessive amounts of concrete. 15. Piping located near floors which can be supported from floor or walls shall be provided with approved floor stands, wall brackets, roller supports, masonry piers or similar items. 16. Resilient hangers and isolation devices shall be provided on piping connected to rotating equipment including pumps and air handling units and on other piping which may vibrate and create audible noise. See Section , Vibration Isolation, for additional requirements concerning vibration isolation at pipe supports. 17. Additional hangers or supports shall be provided, as required, to stabilize and re-support any existing piping that is to remain and be reused in areas affected by demolition. 18. Vertical piping shall utilize riser clamps specifically designed for piping. B. Pipe Hanger Schedule Manufacturers' Model Numbers Hanger Type F&S F&M Grinnell Central Iron 360 shield, split Beam Clamp Multi-J hook blade Clevis hanger degree shield Rigid trapeze Std U-bolt , 137C 98H Adj. steel pipe stanchion Welded steel bracket 800, , , ,199 Riser clamp 91,93, ,261C 37, 261 Pipe rest 92, Base elbow support 720, , 68 Double bolt pipe clamp Welded beam attachment Insert 180A, 180B Series 100,101 Cont. slotted insert 150A, 150B Underground pipe hanger A

7 C. Piping 6 inches and smaller: Piping 6 inches and smaller shall be supported by the following hangers and supports referred to in MSS-SP All high pressure steam and condensate pump discharge piping shall be supported on Type 43 adjustable pipe roller hangers or Type 46 adjustable pipe roller and base supports and Type 39 saddles. 2. Instrument air piping shall be supported with copper-plated Type I clevis hangers or Type 8 riser clamps. 3. All cold water piping shall be supported with Type 40 protection shields and Type 1 clevis hangers. 4. All other piping shall be supported by Type 1 adjustable steel clevis hangers. 5. Hangers for piping with insulation shall be equipped with insulation inserts and protection shields. Refer to Section , HVAC Pipe and Equipment Insulation, for additional requirements. Support piping in accordance with the insert manufacturer's recommendations. 6. Hangers for piping 4 inches and smaller with insulation shall be equipped with Type 40 protection shields. Hot service piping shall be equipped with calcium silicate insulation inserts. 7. All 6 inch cold service piping shall be provided with insulation inserts or oak blocking of square dimension equal to the insulation thickness specified and 12 inches long. In addition, Type 40 protection saddles shall be provided. 8. All 6 inch hot service piping shall be supported on Type 39 protection saddles. Pipe saddles may not be used on piping with insulation requiring a vapor barrier. 9. Support plastic piping in accordance with the piping system manufacturer's recommendations for the intended service based on the expected fluid temperatures. 10. All copper piping shall be supported by copper or plastic clad hangers or shall be protected by plastic non-conducting spacers to prevent dielectric corrosion. 11. All vertical piping shall be supported at floor levels with Type 8 riser clamps. Piping 2-1/2 inches and larger shall be provided with a minimum of two (2) shear lugs installed in accordance with PFI Standard ES-26. Support locations shall be selected to permit uniform loading, provision for expansion, or to suit space limitations. The riser clamps at exposed locations shall be of such design as to avoid creating a hazardous or unsightly condition and staying within the space limitations. 12. Pipe guides shall be provided whenever piping has insufficient physical strength to maintain alignment with the force of lineal expansion applied. 13. The base of all piping at circulating pumps shall be Type 52 variable spring base supports or with stanchions. Pipe stanchions shall be a minimum of 1/3 to 1/2 the nominal pipe diameter of the pipe being supported and 1 inch minimum. The base plate shall be a minimum 1/4 inch thick and its size shall be selected for fastening to the floor with a minimum of two (2) 3/8 inch bolts. 14. Piping 4 inches and smaller supported from the steel structure shall be supported by Type 23 beam clamps or by inserts and/or expansion bolts in the floor structure above

8 15. All 6 inch piping and trapeze hangers where loads in excess of 200 pounds are anticipated shall be supported by Type 22 welded beam attachments. 16. Piping along walls shall be supported by Type 33 brackets with drilled horizontal legs for fastening standard hangers and hanger rods, and vertical legs shall be fastened to the wall with at least two (2) fasteners. 17. Where several pipes can be installed in parallel at the same level, provide trapeze hangers constructed of uni-strut or steel angle suspended by hanger rods. Brace trapeze hangers to prevent motion due to expansion and contraction of the pipe. Support individual pipes by hangers or rollers. 18. Support spacing for horizontal steel piping. The support spacing listed below is the maximum normal spacing, and does not reduce the need for additional hangers and supports when specified elsewhere. Steel Pipe Size Minimum Rod Size Maximum Support Spacing 1-1/4 inches and smaller 3/8 inch diameter 7'- 0" 1-1/2 inches 3/8 inch diameter 9' - 0" 2 inches 3/8 inch diameter 10'-0" 2-1/2 inches 1/2 inch diameter 11-0" 3 inches 1/2 inch diameter 12' - 0" 4 inches 5/8 inch diameter 14'- 0" 0 5 inches 5/8 inch diameter 15' - 0" 6 inches 3/4 inch diameter 17' - 0" 19. Support spacing for horizontal copper piping. The support spacing listed below is the maximum normal spacing, and does not reduce the need for additional hangers and supports when specified elsewhere. Copper Pipe Size Minimum Rod Size Maximum Support Spacing 3/4 inch and smaller 3/8 inch diameter 5' - 0" 1 inch 3/8 inch diameter 6' - 0" 1-1/4 inches 3/8 inch diameter 7' - 0" 1-1/2 inches 3/8 inch diameter 8' - 0" 2 inches 3/8 inch diameter 8' - 0" 2-1/2 inches 1/2 inch diameter 9' - 0" 3 inches 1/2 inch diameter 10'-0" 4 inches 1/2 inch diameter 12' - 0"

9 Delaware County Community College Project # Support spacing for horizontal PVC piping. Support spacing listed below is the maximum normal spacing, and does not reduce the need for additional hangers and supports when specified elsewhere. Additionally, provide support at every pipe joint. PVC Pipe Size Minimum Rod Size Maximum Support Spacing 3/4 inch and smaller 3/8 inch diameter 5' - 0" 1 inch 3/8 inch diameter 5' - 0" 1-1/4 inches 3/8 inch diameter 5' - 0" 1-1/2 inches 3/8 inch diameter 6' - 0" 2 inches 3/8 inch diameter 6' - 0" 2-1/2 inches 1/2 inch diameter 7'- 0" 3 inches 1/2 inch diameter 7' - 0" 4 inches 1/2 inch diameter 7' - 0" 6 inches 5/8 inch diameter 8' - 0" NOTE: The above table is based on Schedule 40 PVC not exceeding 1 00 F service temperature. For other pipe wall thicknesses and service temperatures, consult the manufacturer's published recommendations. 21. locations shall be of such design as to avoid creating a hazardous or unsightly condition and staying within space limitations. 2.3 PIPE EXPANSION PROVISIONS A. Provide expansion loops, expansion joints, and/or ball joints to accommodate pipe expansion. In addition to expansion devices, make provision in the piping and connections to eliminate stress on equipment connections. B. Expansion devices shall be as specified in Section , HVAC Piping Specialties. 2.4 FLEXIBLE PIPE CONNECTIONS A. Pipe connections to all pumps, chillers, air handling units, and other rotating equipment shall be made with flexible pipe connections. B. Pipe connections to integral face and bypass coils shall be made with flexible pipe connections. C. Flexible pipe connectors shall be as specified in Section , Vibration Isolation. 2.5 PIPE SLEEVES AND ESCUTCHEON PLATES A. Provide sleeves for piping passing through roofs, floors, ceilings, walls, partitions, air handling equipment, structural members, and other building parts. B. Sealant shall be equivalent to Dow Coming 795 Silicone Sealant for general purpose use and Dow Coming 786 Mildew Resistant Silicone Sealant for Kitchen, Food Preparation, Dining areas, and wet areas. Prime sleeves in accordance with manufacturer's recommendations

10 Delaware County Community College Project # C. Sealant in one-hour and two-hour walls and one-hour and two-hour floors shall be equivalent to Dow Coming Fire Stop System Sealants and Foams. Sealants and foams shall be UL listed and installed in accordance with manufacturer's recommendations. D. Schedule of Sleeve Materials Sleeve Type Sleeve Material 1 18 gauge galvanized steel 2 Std. weight galvanized steel pipe 3 Std. weight galvanized steel pipe with a continuously welded water stop of 1/4 inch steel plate extending a minimum of 2 inches from the outside of the sleeve. (F&S Mfg. Co. Figure 204 or approved equal.) 4 Cast iron pipe sleeve with center flange. (James B. Clow & Sons No. F-1430 & F-1435, or approved equal.) 5 Std. weight galvanized steel pipe with flashing clamp device welded to pipe sleeve or watertight sleeves. (Josam 1870-A2 with oakum and lead caulking as required, or approved equal.) 6 Metal deck and wall sleeves. E. Escutcheon Plates 1. Schedule of Escutcheon Plate Materials 2.6 LINK SEALS Location Escutcheon Plate Material 4 Finished spaces Unfinished spaces Anodized aluminum or chrome-plated brass Plain brass, cast iron or aluminum A. Provide a sealing element made of synthetic rubber material, compounded to resist aging, ozone, sunlight, water and chemical action, and having a low temperature flexibility and resistance to high temperature environments. Elements shall be suitable for temperature ranges of minus l00f to 600'F. B. Bolts and metal parts shall be made of carbon steel and zinc phosphate plated to resist corrosion. Pressure plates shall be cathodic-type made of plastic. C. The seals shall be constructed so as to be air tight in aboveground installations, and to provide watertight sealing in below grade installations. D. Seals shall be manufactured by Thunderline Corporation or approved equivalent

11 2.7 HVAC PIPING SYSTEM PRESSURE CLASSIFICATION A Piping, fittings, components, and equipment for the various HVAC piping systems shall meet the following pressure requirements: Component Operating Pressure HVAC Piping System Pressure Rating Drawing Symbol 1. Heating water supply & return HWS, HWR 2. Systems not listed PIPE FLASHING FITTINGS A. Pipes passing through roof construction shall be provided with roof curb and piping portal as specified in Section PIPING WELDING A. Refer to Basic Materials and Methods, Section , for welding requirements on piping. PART 3 - EXECUTION. 3.1 GENERAL A. The drawings schematically indicate the size and location of piping. Piping system layout shall be modified as required to meet field conditions and facilitate coordination among contractors at no additional cost. Piping shall conform to the latest ASA code for pressure piping. Unless otherwise noted, all piping, valves, and associated fittings shall be concealed behind walls, above ceilings, or below floors. B. Provide adequate provision for expansion and contraction in portions of the piping systems, to prevent undue strains on piping and connected equipment. C. Provide approved bolted, gasketed flanges for each piece of equipment to permit easy connection and disconnection. Screwed unions with steel faces may be used on piping 1 inch and smaller. D. Inlet/outlet piping connections to coils and equipment shall be provided with offsets and shutoff valves arranged such that equipment can be serviced or removed without dismantling the pipe. E. Converging and diverging bullhead tee's will not be permitted in piping systems. F. "T" drill type fittings will not be permitted in piping systems. G. If, after systems are in operation, any coils or other apparatus become stratified or air-bound, they shall be repiped with necessary fittings, air vents or vacuum breakers at no additional cost. If connections are concealed behind construction, the responsible Contractor shall bear the cost of any demolition and refinishing construction required

12 Delaware County Community College Project # H. Pitch water piping up in direction of flow to ensure adequate flow without air binding and to prevent noise and water hammer. Branch connections to mains shall be made in such a manner as to prevent air trapping and prevent free passage of air. Mains shall be laid out to meet field conditions, maintain adequate headroom and clear work of other Contractors. I. Miscellaneous drains, vents, reliefs, equipment/tank overflows and similar devices shall be run to the nearest floor drain or roof drain. Provide drain valves wherever required for complete drainage of water system piping, including the system side of pumps. J. Grooved Joint Installation: All grooved couplings, fittings, valves, and specialties shall be the products of a single manufacturer. Grooving tools shall be of the same manufacturer as the grooved components. The gasket style and elastomeric material (grade) shall be verified as suitable for the intended service as specified. Gaskets shall be manufactured by the grooved coupling manufacturer. Grooved ends shall be clean and free from indentations, projections, and roll marks in the area from pipe end to groove. K. Vic Press TM Joint Installation: Pipe shall be certified for use with the Vic Press 304 TM system. Pipe shall be square cut, +\ ", properly deburred and cleaned. Pipe ends shall be marked at the required location using a manufacturer-supplied gauge, to ensure full insertion into the coupling or fitting during assembly. Use a Victaulic 'PFT' series tool with the proper sized jaw for pressing. L. Any piping passing through roof construction shall be arranged to provide a minimum of 12 inches clearance from walls or other obstructions so as to permit proper flashing. Set pipe flashing fittings at a suitable level above the roof to permit proper termination of flashing. M. Provide hose drain connections on water systems downstream of floor main shut off valves. N. Provide dielectric fittings equivalent to EPCO Sales at all ferrous to non-ferrous pipe connections. 3.2 CONNECTIONS TO EXISTING WORK A. Plan installation of new work and connections to existing work to insure minimum interference with regular operation of existing facilities. Submit to the Owner for approval, date schedule of necessary temporary shutdowns of existing services. Shutdowns shall be made at such times as shall not interfere with regular operation of existing facilities and only after written approval of the Owner. To insure continuous operation, make necessary temporary connections between new and existing work. Costs resulting from temporary shutdowns shall be borne by this Contractor. B. Connect new work to existing work in neat and approved manner and in accordance with local codes and regulations. Restore existing work disturbed to original condition. C. Submit shop drawings of materials, method of connection and necessary temporary connections for approval before installation

13 Delaware County Community College O 3.3 PIPING SYSTEM PRESSURE TESTS Project # A. The following procedures shall be observed for piping system pressure tests: I. Preliminary testing, notification of inspectors and Contractor's responsibilities as specified in Section , paragraph "CODES, PERMITS AND INSPECTIONS" shall be observed. 2. Take all due precautions to prevent damage to the building and its contents that may incurred be by such tests; repair or make good any damage caused by the tests at no additional cost to the Owner. 3. Tests shall apply full test pressure to the piping for a sufficient period of time to detect leaks and defects. 4. Tests shall be conducted prior to the installation of any required fitting insulation. If delicate control mechanisms, not including control valves, are installed in the piping, they shall be removed to prevent shock damage. 5. The section of piping to be tested shall be brought up to the specified test pressure. If the test pressure falls more than the specified amount during the test period, the point of leakage shall be found, repaired and the test repeated. This procedure shall be repeated until the piping system has been proved absolutely tight. 6. Leaks shall be repaired by removing the valve, fitting, joint or section which is leaking and reinstalling new materials and joints as specified. Use of mastic, "no-leak" compounds or other temporary means of repairing leaks shall not be permitted. 7. System pumps, heat exchangers, etc., shall not be used until final flushing is done. Provide necessary temporary pumps required for flushing. 3A HYDRONIC HEATING WATER SYSTEMS A. Hydronic Heating Water Systems Flushing I. After piping installation is complete but before final connections are made to the equipment, control valves, etc., thoroughly flush the supply and return piping water. with fresh Flushing shall continue until clear water flows from drains or for two hours, whichever is longer. 2. After clear water flushing, operate pumps (provide temporary pumps) for a minimum 8 hours with of a "start-up" fine mesh strainer. Clean strainer after 8 hours of operation then operate pump for 24 hours. Remove start-up strainer, replace bypass filter, and clean remaining strainers. 3. Pump flow rate and head shall be equal to flow rate required for the installed system. Water systems (hot water and chilled water) shall not be connected until flushing is complete. Notify Architect 5 days before temporary pumps are started

14 B. Hydronic Heating Water Water Systems Pressure Tests 1. Test piping systems hydrostatically using water not exceeding 1 00 F. Conduct tests in accordance with the requirements of ANSI B3 1.1 and as follows: a. Test the piping after the lines have been cleaned and prior to applying insulation and covers to fittings. b. For piping systems with pressures below 175 psig, test piping systems at a pressure equal to twice the system's operating pressure or 50 psig, whichever is greater. For piping systems with pressures 175 psig and above, test piping systems at 350 psig. c. Prior to testing, remove or valve-off from the system gauges, traps, and other apparatus which may be damaged by the testing. d. Install calibrated test pressure gauge in the system to observe any loss in pressure. e. Maintain the required test pressure for a sufficient length of time to enable an inspection of joints and connections. f. Tests shall be performed after installation of the piping systems and prior to acceptance of same. 3.5 PIPE HANGERS AND SUPPORTS A. Pipe Hanger Support Schedule Building Construction Poured concrete floor slabs Building structural steel Precast concrete floor slabs Metal deck floor slabs with concrete fill Existing concrete slabs Pipe Support Method Galvanized steel inserts, and/or fishplates of sufficient area to support twice the calculated dead load. Beam attachments and similar devices. Fishplates of sufficient area to support twice the calculated dead load and approve type specialty hanger accessories manufactured for the specific purpose of attaching to precast floors. Galvanized steel inserts and/or fishplates of sufficient area to support twice the calculated dead load, and approved type specialty hanger accessories manufactured for the specific purpose of attaching to metal deck floors. "Phillips" or "Hilti" expansion bolts and shields for piping 4" and smaller, with main supports welded to structural steel at maximum 20 feet on center 4" x 4" x 3/8" thick clip knee angles with 3/4" expansion bolt in shear (horizontal) and supporting rod at 900 from anchor bolt for piping greater than 4", attached to concrete beams or columns. 3.6 PIPE SLEEVES A. Install sleeves in time to permit construction progress as scheduled. B. Grout sleeves to building structure for watertight fit

15 Lengths of Sleeve Schedule C. Location Floors Roofs Walls and Partitions Sleeve Length Equal to depth of floor construction and at least 1 inch above finished floor construction. In waterproof floor construction and equipment rooms, sleeves shall extend a minimum of 2 inches above finished floor construction Equal to depth of roof construction including insulation Equal to depth of construction and terminated flush with finished surfaces D. Schedule of Sleeve Caulking and Packing Caulking/ Packing Type A B C Caulking/Packing Requirements Space between pipe and sleeve shall be packed with oakum and caulked watertight with lead. Space between pipe or pipe covering and sleeve shall be caulked with an incombustible permanently plastic waterproof, non-staining compound leaving a smooth, finished appearance. Verminproofing - space between pipe and sleeve shall be packed with industrial felt or fiberglass caulked at both ends with sealant according to manufacturer's recommendations. Verminproof insulation shall be minimum 1 inch thickness and shall be sections of foam glass as long as sleeves. E. Schedule of Sleeve Applications Sleeve Type Sleeve Type Thru Fire Thru Non-Fire Sleeve Caulking Rated Rated and Packing Location Construction Construction Type Membrane water-proof floor, roof and 5 5 C wall construction Non-membrane waterproof floor, roof 5 5 C and wall construction where flashing is required Interior walls, partitions, and floors 2 1 or 2 C Exterior walls -- 3 or 4 C Cellular metal deck floors 2 6 B Precast concrete floor with poured -- 1 B concrete topping (NOTE: sleeves with flat flanges or guides which rest on top * of precast slab required

16 3.7 PIPE FLASHING FITTINGS A. Any pipe passing through roof construction shall be arranged to provide a minimum of 12 inches clearance from walls or other obstructions so as to permit proper flashing. 3.8 DRIP PANS FOR PROTECTION OF ELECTRICAL EQUIPMENT A. Examine the drawings and in cooperation with the Electrical Contractor confirm the final location of electrical equipment to be installed in the vicinity of piping. Plan and arrange overhead piping no closer than 2 feet from a vertical line to electric motors and controllers, switchboards, panel boards, or similar equipment. Piping is not permitted in electric equipment rooms, transformer rooms, switchgear rooms, nor telephone gear rooms. B. Where the installation of piping does not comply with the requirements of foregoing paragraph, where feasible, the piping shall be relocated. C. Where piping cannot be relocated, furnish gutters as follows: I. Provide and erect a gutter of 16 ounce cold rolled copper or heavy galvanized steel, under every pipe which is within 2 feet from a vertical line to any motor, electrical controllers, switchboards, panel boards, or the like. 2. Each gutter shall be soldered and made watertight, properly suspended and carefully pitched to a convenient point for draining. Provide a 3/4 inch drain, with valve as directed, to nearest floor drain or slop sink, as approved. 3. In lieu of such separate gutters, a continuous protecting sheet of similar construction adequately supported and braced, properly rimmed, pitched and drained, may be provided over any such motor, and extending 2 feet in all directions beyond the motor, over which such piping has to run. END OF SECTION

17 SECTION LIMITED CHEMICAL TREATMENT SYSTEMS PART 1 - GENERAL 1.1 CHEMICAL TREATMENT SYSTEMS A. The following work consists of providing all labor, material and equipment for cleaning and flushing piping systems and providing water treatment chemicals and miscellaneous equipment for piping systems. B. Provide all chemicals required for cleaning and flushing the systems affected by the construction, for initially filling these systems, and for maintaining these systems at proper concentration levels required for effective, efficient operation of the mechanical equipment for a period of one year after the acceptance of the project by the Owner. Fouling factors shall be maintained at on all heat exchange surfaces and algae shall be maintained at levels of no appreciative build-up. 1.2 EXISTING SYSTEM CONNECTION A. Utilize existing chemical treatment system and verify that proposed chemicals for chemical treatment are compatible with existing chemical treatment system chemicals. PART 2 - PRODUCTS. 2.1 QUALITY ASSURANCE A. The HVAC Contractor shall engage an independent water treatment company, Diversey Water Technologies Inc., as required regarding existing system requirements. PART 3 - EXECUTION 3.1 INITIAL CLEANOUT SPECIFICATION - HOT WATER HEATING SYSTEMS A. Screens/strainers shall be in place and chemical feed system installed before initial cleanout beings. B. Fill system with water and simultaneously add manufacturer's non-foaming chemical detergent equal to Nalco 2567 to recommended dosage based on total system capacity through chemical feed system. C. Circulate water for 24 to 36 hours. D. Immediately after recirculation, so that removed and suspended foulants will not resettle, drain system. E. Remove, clean, and replace all strainers. LIMITED CHEMICAL TREATMENT SYSTEMS

18 F. Immediately after steps 4 and 5 above, so as to prevent corrosion from taking place on empty piping, fill the system adding 1/4 the theoretical dosage of the selected treatment, recirculate for a minimum of 4 hours, maximum of 24 hours. Then drain or purge system. G. Immediately after step 6, refill system while adding total required dosage of selected treatment equal to Nalco Continue to recirculate for a minimum of 24 hours to allow total film formation. H. Provide certification by chemical treatment representative that system is properly cleaned and ready for startup. 3.2 CHEMICAL TREATMENT PROGRAM - HOT WATER HEATING SYSTEMS A. Provide initial fill chemicals plus provide chemicals and maintain recommended chemical levels for a period of one year. B. Inhibitor 1. A liquid formulation of borate and nitrate containing a "scale modified" and color concentration indicator shall be used. Nitrite concentrations shall be ppm in hot water heating system. C. ph Control 1. Must be incorporated in inhibitor formulation using borate as the ph buffer. The ph shall be maintained between 7.0 and 9.0. D. Guarantee 1. Protect various dissimilar materials of construction. 2. Corrosion rate of ferrous metals shall not exceed 1.0 mils penetration per year. 3. Treatment system shall not permit fouling to cause equipment capacity reduction beyond the allowed "fouling factor." 3.3 TESTING EQUIPMENT A. Testing equipment shall be provided which shall include the following: 1. Reagents and apparatus for determination of ph and alkalinity levels. 2. Reagents and apparatus for determination of treatment levels. 3. Any special equipment required for proper control or test of chemical treatment. END OF SECTION LIMITED CHEMICAL TREATMENT SYSTEMS

19 SECTION HVAC PIPING SPECIALTIES PART 1- GENERAL 1.1 GENERAL A. Provide HVAC piping specialties as shown on the drawings and specified herein. 1.2 PRESSURE GAUGES A. Provide pressure gauges at suction and discharge connections to pumps and as indicated on the drawings. 1.3 THERMOMETERS A. Provide thermometers at inlets and outlets of each boiler, heat exchanger, chiller, and as indicated on the drawings. 1.4 STRAINERS. 1.5 A. Provide strainers in the piping upstream from automatic control valves, backflow preventers, regulating valves, and as indicated on the drawings. EXPANSION JOINTS, ANCHORS, AND GUIDES A. Provide expansion joints, anchors, and guides as shown on the drawings and specified herein. 1.6 FLOW METERS A. Provide flow meters as shown on the drawings and specified herein. 1.7 PRESSURE AND TEMPERATURE TEST PLUGS A. Provide pressure and temperature test plugs as shown on the drawings and specified herein. 1.8 MANUAL AIR VENTS A. Provide air vents as shown on drawings and specified herein. 1.9 AUTOMATIC AIR VENTS A. Provide automatic air vents in accessible location at high point of each system (supply and return piping) HIGH CAPACITY AIR VENTS A. Provide high capacity air vents above the cold water fill piping connections to the air separators serving the hot water heating system and the chilled water system. HVAC PIPING SPECIALTIES

20 Delaware County Community College Project # DRAIN VALVE AND CAP :4. Provide drain valve and cap at the bases of risers, downstream of flow shut off valves, as shown on drawings and specified herein BACKFLOW PREVENTERS A. Provide backflow preventers in the makeup water piping to each boiler, evaporative cooler, cooling tower, chiller, expansion tanks, and as shown on the drawings and specified herein PRESSURE REDUCING VALVE A. Provide water pressure reducing valves in the water makeup piping to the boiler, chiller, cooling tower, evaporative cooler, expansion tanks, and as shown on the drawings and specified herein PRESSURE RELIEF VALVES A. Provide ASME rated pressure relief valves as indicated on the drawings and specified herein based on each heating system capacity. PART 2 - PRODUCTS 2.1 GENERAL A. Refer to Section for component and equipment ratings. All components, fittings, equipment, coils, specialties, etc., shall meet the component pressure rating listed. 2.2 PRESSURE GAUGES A. Pressure gauges shall have 4-1/2 inch diameter aluminum cases, no back flange, and removable chrome slip ring. Finish shall be black enamel. Gauge dial shall be white coated with black figures, gradations, and micro adjustable. High grade shutoff cocks shall be provided between gauge and piping to permit gauge removal while system is under pressure. Gauges shall be capable of reading to approximately twice the working pressure. Accuracy: 1 percent. B. Product: Weiss Instruments Series UG-1 Type AN; Ashcroft Type 1279; Trerice No. 50OX Series, Weksler EA THERMOMETERS A. Thermometers shall be 9 inch scale, red-reading organic spirit filled thermometers with cast aluminum case and clear glass window, and shall read degrees Fahrenheit. Thermometers shall be adjustable angle type, with 6 inch stem and 2-1/2 inch brass extension neck separable socket. Scale range shall be 30'F - 240'F with 2 F scale divisions. B. Product: Weiss Instruments Industrial Thermometer; Trerice Industrial Thermometer, Weksler AS5H-9. HVAC PIPING SPECIALTIES

21 2.4 STRAINERS A. Strainers up to 4 inches for water and for steam shall be "Y" type, full pipe size and fitted with blow-off ball valves. Basket screens shall be brass, with perforations suitable for intended service. B. Strainers over 4 inches shall be basket strainers, full pipe size and fitted with blow-off gate valve. Basket screens shall be brass, with perforations suitable for intended service. C. Product: 1. "Y" Type: Mueller No. 11 or Mueller No. 758; Watts No. 77S or Watts No. 77F-D; Sarco Type IT or Sarco IF Basket Type: Mueller No. 165; Sarco 528-B. 3. UPMC Approved Manufacturers: Armstrong, Boyston, and Conbraco. 2.5 EXPANSION JOINTS, ANCHORS AND GUIDES A. Expansion joints shall be Metraflex Model HP for piping to 4 inches and Metraflex Model MN with Model MPC Connector for larger piping or approved equal. Expansion joints shall be suitable for 150 psig operation. B. Ball joints shall be Standard Series (threaded) or Type N (welded) by Aeroquip/Barco or * approved equivalent. C. Anchors shall be Metraflex Co., Model PAI, or approved equivalent. D. Guides shall be Metraflex Co., or approved equivalent. 2.6 PRESSURE AND TEMPERATURE TEST PLUGS A. Test plugs shall be a 1/4 inch MPT fitting to receive either a temperature or pressure probe with a 1/8 inch OD. Fitting shall be solid brass with two valve cores of Nordel (maximum 275 F), fitted with a color coded and marked cap with gasket and shall be rated at 1,000 psig. Fittings shall be Peterson Equipment Company, Incorporated, Pete's Plug, or approved equal. B. Provide two test kits with pressure gauge and thermometer. Pressure gauges shall have 0-50 psi dial range, and shall have adaptor with 1/8 inch probe of 304 stainless steel and union nut for use with pressure and temperature test plug. Thermometers shall have 0' to 220'F range. Test kits shall be Peterson Equipment Company, Incorporated, Series 1500 Test Kit, or approved equal. 2.7 MANUAL AIR VENTS A. Air vents for terminal heating units, unit heaters, finned tube radiation, etc., shall be 1/8 inch male screwdriver type manual air vents suitable for system pressure. B. Air vents for air handling unit coils shall be 1/4 inch petcocks. HVAC PIPING SPECIALTIES

22 Delaware County Community College Project # AUTOMATIC AIR VENTS A. Automatic air vents shall vent automatically with float principle; bronze body and nonferrous internal parts; 150 psig working pressure (300 psig for chilled water system); 240 deg F operating temperature; with NPS 1/4 discharge connection and NPS 1/2 inlet connection; equivalent to Spirax Sarco Model 13WS or 13WHS depending on system pressure. 2.9 HIGH CAPACITY AIR VENTS A. Provide float actuated high capacity air vents designed to purge free air from the system and provide shutoff at pressures up to 150 psig at a maximum temperature of 250 degrees F. The design of the high capacity air vents shall prevent air from entering the system if system pressure should drop below atmospheric pressure. The high capacity air vents shall purge free air at pressures up to 150 psig during normal system operation. The high capacity air vents shall be constructed of cast iron and fitted with components of stainless steel, brass and EPDM. B. High capacity air vents shall be ITT Bell & Gossett Model 107A or approved equivalent by Spriax Sarco or Armstrong International DRAIN VALVE AND CAP A. Drain valve shall be equivalent to Watts B-6000-CC 3/4 inch boiler drain valve. B. Drain valve cap shall be brass gasketed cap capable of withstanding continuous full line pressure BACKFLOW PREVENTERS A. Provide backflow preventers in boiler, cooling tower, expansion tank, evaporative cooler, and water make-up piping. The assembly shall consist of a pressure differential relief valve located in a zone between two positive seating check valves and captured springs. Back-siphonage protection shall include provision to admit air directly into the reduced pressure zone via a separate channel from the water discharge channel. The assembly shall include two tightly closing shutoff valves before and after the valve and test cocks. Backflow preventers shall be Watts No. 909 Series or approved equivalent. Provide drain air gap fitting and drain line to drain PRESSURE REDUCING VALVE A. Pressure reducing valve in the water make-up pipe shall be Watts Regulator Company No. U5 water reducing valve or approved equivalent. Maximum temperature: 160'F; maximum initial pressure: 300 psig; reduced pressure range shall be from 25 to 75 psig PRESSURE RELIEF VALVES A. Pressure relief valves shall be Watts ASME rated pressure safety relief valves of bronze body construction with test lever. Model number and size to be based upon pressure setting and relieving capacities as noted on the drawings. HVAC PIPING SPECIALTIES

23 O PART 3 - EXECUTION 3.1 GAUGES A. Gauges shall be installed such that they are easily read from the normal observation point. 3.2 THERMOMETERS A. Install thermometers in oversize pipe tee and nipple. B. Thermometers shall be installed such that they are easily read from a normal observation point. 3.3 STRAINERS A. Strainers shall be installed such that they are accessible for maintenance and inspection. B. Strainers shall be installed in a horizontal (or vertical downward) run of pipe. Strainers shall be arranged so as to permit the blowing out of accumulated dirt, and to facilitate removal and replacement of strainer screen without disconnecting from piping system. C. Valved dirt blow-out connections for strainers 2-1/2 inches and larger shall be installed such that the valve is located 6 inches to 12 inches below the strainer. Blow-out connections shall be terminated in an approved manner, at a point where there shall be no risk of flooding or damage. D. After the piping systems have been flushed and prior to releasing the system to the Owner, strainers shall be removed, cleaned, and reassembled. 3.4 PRESSURE AND TEMPERATURE TEST PLUGS A. Provide pressure and temperature test plugs where indicated on the drawings and one pair at every main to riser connection point. For this project, provide a minimum of 2 pair of pressure and temperature test plugs and main to riser connection points. 3.5 AUTOMATIC AIR VENT A. Provide vent in accessible location at top of system to allow for maintenance. 3.6 BACKFLOW PREVENTERS A. Extend drain piping from backflow preventers to nearest floor drain. END OF SECTION HVAC PIPING SPECIALTIES

24 SECTION HVAC PIPE AND EQUIPMENT INSULATION PART 1 - GENERAL 1.1 GENERAL A. Unless specifically noted otherwise, insulation shall have composite fire and smoke hazard ratings (including insulation, jacket or facing, PVC covers, and adhesives), as tested by ASTM E84, NFPA 255 or UL 723 procedures, not exceeding a flame spread rating of 25 and smoke developed rating of 50. B. Piping systems shall be insulated in accordance with the schedule below, including flanges, fittings, valves, expansion joints, vents, drains and similar appurtenances. Piping subject to freezing shall be insulated with a minimum of 2 inch insulation. C. Piping tests shall be completed before insulation proceeds. D. Insulation shall be provided continuously through sleeves and openings. E. Adhesives and coatings shall be as manufactured by Insulcoustic, Foster or approved equivalents, as follows: Insulcoustic Foster Childers Vapor Barrier Adhesive CP-52 Vapor Barrier Coating CP-35 Lagging Adhesive CP-52 Insulation Adhesive CP-82 Glass Cloth Adhesive CP-82 Weatherproofing Mastic VI-AC CP- 10/11 Calcium Silicate Adhesive CP-97 F. Asbestos shall not be used in the manufacture of insulation products. G. Refer to Section for verminproof insulation. PART 2 - PRODUCTS 2.1 GENERAL A. Refer to Section for component and equipment ratings. All components, fittings, equipment, coils, specialties, etc., shall meet the components pressure rating listed. HVAC PIPE AND EQUIPMENT INSULATION

25 2.2 PIPING SYSTEM INSULATION SCHEDULE Insulation Piping System Type Minimum Insulation Thickness Notes Hydronic heating P-1 1 1/2 inch for pipes 1-1/2 inches and system below; 2 inches for piping above 1-1/2 inches in diameter Domestic cold water P-1 1/2 inch make-up 2.3 TYPE P-1 GLASS FIBER A. Insulation, including fiberglass fitting inserts, shall be glass fiber with a maximum K factor of.24 at 75'F mean temperature with factory applied all-service jacket with self-sealing lip. Exposed pipe insulation material must be the one piece type. Sectional type may be used for concealed piping. B. Seal butt joints with 3 inch wide butt stripe adhered neatly in place. C. Fittings and valves for all piping shall be insulated with preformed fiberglass inserts of the same density as the pipe insulation and finished with a PVC fitting cover. Provide one fiberglass insert per fitting or valve for each 1 inch of piping insulation specified. Field cut or loose blanket insulation is not acceptable. D. Fittings and valves for steam piping shall be insulated with fiberglass inserts and finished with.024 inch thick aluminum fitting flange and valve covers. E. Exposed piping outdoors shall be finished with a factory attached all-service jacket, protected with two 1/16 inch coats of Childers CP/10 or CP/ 11 weather barrier coating. F. Exposed piping in finished spaces shall be protected with.024 inch thick stainless steel or aluminum jacketing and fitting covers. G. Product: Owens-Coming SSL-1 1, Manville Micro-Lok, KnauffASJ-SSL, Certainteed Alley-K. PART 3 - EXECUTION 3.1 GENERAL A. Insulation shall be applied on clean, dry surfaces. B. Insulation shall be continuous through construction openings and sleeves. C. Insulation on cold surfaces where vapor barrier jackets are required shall be applied with a continuous, unbroken vapor seal. Hangers, supports, anchors and similar devices that are secured directly to cold surfaces shall be adequately insulated and vapor sealed to prevent condensation. HVAC PIPE AND EQUIPMENT INSULATION