Water Heater Recirculation Pump Diagram

If the hot water is not used it simply returns back to the tank.

Water heater recirculation pump diagram. Choose your country. Back to product literature piping diagrams commercial electric heat pump commercial tank type electric commercial tank type gas commercial tankless domestic circulating water heaters residential piping diagrams a. If you purchase a grundfos recirculating pump like the one just below you don t need to add any extra piping. 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.

A check valve must be installed in the line to ensure hot water. Ao smith 2018 a. The pump should be installed so that the pump is pumping away from the hot water heater towards the house. 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.

Domestic circulating water heaters. Hot water recirculation pumps can be located either at the water heater itself or at a point of use fixture in the building and either timer aquastat driven or on demand aquastat. A pump at the water heater moves hot water through the recirculation line. Any cold water in the recirculation line is returned to the heater.

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