Piping layout for a heat recovery coil including supply and return lines equipped with typical unions, air vents at high points, pressure and temperature test plugs, and isolation valves. A strainer is incorporated into the piping line along with a three-quarter inch ball valve featuring a hose thread drain connection. Piping is arranged to maintain required service clearances around the coil unit.
A A COIL AT HIGH POINT AIR VENT UNION, TYP. P & T TEST PLUG, TYP. REQUIRED SERVICE CLEARANCE ARRANGE PIPING TO MAINTAIN THREAD DRAIN CONNECTION 3/4" BALL VALVE WITH HOSE VALVE ISOLATION STRAINER A
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