Mechanical · M-EDYK8

Electric Water Heater Detail

Materials

Elements

Walls Floors / Slabs Insulation Drainage

About this detail

An electric water heater is mounted on a four-inch concrete housekeeping pad over an incompressible insulated pad with a minimum R-10 value and a galvanized steel drain pan with a three-quarter-inch copper drain line routed to the nearest drain. The cold water supply features a shut-off valve, check valve, expansion tank with a three-quarter-inch capped drain, union, and a vacuum relief valve installed six inches above the water heater. The hot water discharge includes a pressure and temperature relief valve with a full-size drain pipe routed to the nearest drain, a heat trap with a minimum twelve-inch vertical drop, a thermometer, and a temperature transmitter. Hot water circulation piping connects back through a balancing valve, circulation pump, check valve, and unions. Seismic restraints are provided to the floor and wall, and check valves are left uncovered by pipe insulation with removable covers provided.

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