Water Heater Recirculation Pump Diagram

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Water heater recirculation pump diagram.

Choose your country. A pump at the water heater moves hot water through the recirculation line. The recirculating pump keeps hot water moving through your home s hot water pipes at all times on demand or set for specific hours via a timer different from a water heater timer. A check valve must be installed in the line to ensure hot water.

See picture 1 step d install pump onto the water heater discharge using the 3 4 female fi tting and gasket supplied on the pump. Ao smith 2018 a. The pump should be installed so that the pump is pumping away from the hot water heater towards the house. Domestic circulating water heaters.

If the hot water is not used it simply returns back to the tank. If you live in a house on a slab or where a majority of the hot water lines drop below the water heater you need to use a recirculating water pump. Any cold water in the recirculation line is returned to the heater. If you purchase a grundfos recirculating pump like the one just below you don t need to add any extra piping.

Step c disconnect the hot water heater at the hot water discharge.