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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Coil Hookups 23 05 31 - 3 <br />H.Union with Manual Air Vent: <br />1.Union with manual air vent and P/T plug. <br />2.IMI UP Series 3/4"through 2":400 psi,DZR brass body with manual air vent port and <br />pressure/temperature port,with EPDM seals.Union port fitting shall provide a simplified <br />terminal hookup for installation at coil outlets.Suitable for operating temperatures to <br />230°F/110°C. <br />3.Assembly shall be rated for 400 PSIG at 250°F. <br />PART 3 EXECUTION <br />3.01 INSTALLATION <br />A.Dielectric fittings shall be used at all locations where dissimilar materials meet. <br />B.Valve screws shall not be installed below horizontal. <br />C.Contractor shall examine each installed device to ensure flow arrow is facing the correct direction. <br />3.02 PREPARATION FOR CLEANING <br />A.Contractor shall install a BYPASS pipe wherever needed between the hydronic return &supply <br />lines to recirculate the entire system using the hydronic pumps installed.The diameter of this pipe <br />shall be at least 1/3 of the diameter of the main hydronic lines.The contractor shall also remove or <br />cap the temporary BYPASS to a permanent configuration when flushing is complete and approved <br />water chemistry is achieved. <br />B.Contractor shall remove all startup strainer screens prior to flushing all systems,including mud <br />from the dirt legs.Contractor shall clean and replace/reinstall all strainer screens after the final <br />cleaning and flushing procedure has passed the final test criteria noted herein. <br />END OF SECTION 23 05 31 23 05 31 <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C