Water Heater Recirculation Pump Diagram

A pump at the water heater moves hot water through the recirculation line.

Water heater recirculation pump diagram.

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

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. Choose your country. If you purchase a grundfos recirculating pump like the one just below you don t need to add any extra piping. Domestic circulating water heaters.

Any cold water in the recirculation line is returned to the heater. A recirculation line is a separate water pipe that runs off the hot water line from the farthest plumbing fixture back to the water heater. 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. If the hot water is not used it simply returns back to the tank.

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.