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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Hydronic Piping 23 21 13 - 4 <br />B.Copper Tube:ASTM B88 (ASTM B88M),Type ​L (B)​,hard drawn;using one of the following joint <br />types: <br />1.Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22,solder wrought copper <br />fittings. <br />a.Solder: ASTM B32 lead-free solder,HB alloy (95-5 tin-antimony)or tin and silver. <br />b.Braze: AWS A5.8M/A5.8 BCuP copper/silver alloy. <br />2.Copper tube may be used on 2"pipe size and under. <br />3.Mechanical Press Sealed Fittings: Double pressed type complying with ASME B16.22, <br />utilizing EPDM,nontoxic synthetic rubber sealing elements. <br />a.Manufacturers: <br />1)Apollo Valves <br />2)Grinnell Products <br />3)Nibco <br />4)Viega LLC​ <br />2.04 EQUIPMENT DRAINS AND OVERFLOWS <br />A.Copper Tube:ASTM B88 (ASTM B88M),Type ​L (B)​,drawn;using one of the following joint types: <br />1.Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22 solder wrought copper <br />fittings;ASTM B32 lead-free solder,HB alloy (95-5 tin-antimony)or tin and silver. <br />2.Copper pipe shall be used for all condensate and other drains,except condensing boiler <br />drains. <br />PART 3 EXECUTION <br />3.01 PREPARATION <br />A.Ream pipe and tube ends. Remove burrs. Bevel plain end ferrous pipe. <br />B.Remove scale and dirt on inside and outside before assembly. <br />C.Prepare piping connections to equipment using jointing system specified. <br />D.Keep open ends of pipe free from scale and dirt. Protect open ends with temporary plugs or caps. <br />E.After completion,fill,clean,and treat systems. <br />3.02 PRESSURE TESTS <br />A.Piping pressure tests shall be required on all new piping. <br />1.Where connecting to existing systems,segregate new piping from existing system and <br />provide isolation valves as required for testing. <br />B.Coordinate pressure tests with the Engineer and Owner at least 72 hours in advance.Engineer, <br />Owner,and CxA may choose to witness the pressure test.If Owner and Engineer decide not to <br />witness a specific test,the Construction Manager/General Contractor shall witness the test and <br />sign off. <br />C.Conduct pressure tests prior to flushing and cleaning of piping systems. <br />D.Pressure tests may be made of isolated portions of the piping systems to facilitate general <br />progress of the installation.Changes made in the piping system shall require retesting of the <br />affected portions. <br />E.No system or part of the system shall be insulated until it has been successfully tested.If required <br />for additional pressure load under test,provide temporary restraints at expansion joints or isolated <br />them during test. <br />F.All hydronic piping shall be hydrostatically tested to 150 psi for a period of four (4)hours minimum. <br />1.Use ambient temperature water as a testing medium unless there is a risk of damage due to <br />freezing.Another liquid that is safe for workers and compatible with piping may be used if <br />approved by the Engineer. <br />2.While filling system,use vents installed at high points of system to release air.Use drains <br />installed at low points for complete draining of test liquid. <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C