Mechanical · M-2S9VV

HVAC Coil Piping and Valve Installation Detail

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Hot water supply piping connects to the leaving side of the heating coil through copper pipe, dielectric waterways, threaded-to-sweat connections, and a ball valve with a hose end and cap. The return water piping includes a three-way modulating control valve with union ends, a flowset accusetter valve with a venturi and Schrader valves, pressure-temperature plugs, and a manual air vent with a half-inch ball valve. A minimum clearance of five pipe diameters is maintained at the balancing valve. Valves must be installed as close to the coil as possible, with specific valves located within two feet of valve A per the accompanying notes.

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