Water Heater Recirculation Pump Diagram

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.

Water heater recirculation pump diagram.

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. 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. A pump at the water heater moves hot water through the recirculation line. If the hot water is not used it simply returns back to the tank. 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.

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

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