Plumbing · A-HBCSQ

Storage Electric Water Heater

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A vertical storage electric water heater mounts on an incompressible insulated pad with a minimum thermal resistance of R-10, set atop a four-inch concrete housekeeping pad. The unit is secured with typical seismic restraints and sits within a drain pan featuring an indirect drain to the floor drain and a hose end drain valve. Cold water enters through a ball valve, union, pressure gauge, and check valve, while a parallel expansion tank with seismic restraints connects to the system with its set pressure equal to the cold water inlet pressure. Hot water exits through a pressure and temperature relief valve discharging through a full-size pipe to the floor drain, and routes to fixtures via a ball valve, union, thermometer, and balancing device. A hot water circulating pump and strainer tie into the return loop via check valves and unions.

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