Mechanical · M-QERYE

Electric Water Heater Detail

Materials

Elements

Walls Floors / Slabs Insulation Drainage

About this detail

An electric water heater sits atop a four-inch concrete housekeeping pad over a finished floor, resting on an incompressible insulated pad with a minimum R-10 value, a galvanized steel drain pan, and a three-quarter-inch copper drain pan drain routed to the nearest drain. The unit is equipped with a pressure and temperature relief valve, a vacuum relief valve installed six inches above the water heater, and a heat trap on the hot water supply. Piping connections include cold water supply, hot water return, hot water circulation, unions, shut-off valves, check valves, balancing valves, thermometers, and temperature transmitters typically placed along the lines. An expansion tank with a three-quarter-inch capped drain is tied into the plumbing. Seismic restraints are provided to the floor and wall. Check valves are left uncovered by pipe insulation and fitted with removable covers.

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