Water Heater Recirculation Pump Diagram

Domestic circulating water heaters.

Water heater recirculation pump diagram.

Pump at the water heater dedicated return line pumps located at the water heater are suitable for installations with a pre installed hot water return 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 pump at the water heater moves hot water through the recirculation line. Choose your country.

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. A check valve must be installed in the line to ensure hot water. 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.

Step c disconnect the hot water heater at the hot water discharge. Any cold water in the recirculation line is returned to the heater. Ao smith 2018 a. 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.

The pump should be installed so that the pump is pumping away from the hot water heater towards the house.