Plumbing · P-NX58J

Electric Water Heater Piping with Recirculation Detail

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The domestic hot water system connects to the electric water heater with shut-off valves, dielectric unions, and energy-code compliant heat traps. A temperature and pressure relief valve discharges full size to a nearby floor drain. The recirculation loop includes a hot water circulator pump controlled by a time clock, accompanied by a balance valve, swing check valve, and an expansion tank. A drain valve is provided at the base of the tank above the floor line.

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