Hot Water Heater Circulating Pump Diagram

A check valve must be installed in the line to ensure hot water.
Hot water heater circulating pump diagram. 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. These are one way valves. This valve will prohibit in rushing cold water from the bottom of the hot water heater from flowing backwards through the loop when you open a hot water faucet somewhere within the system. Ao smith 2018 a.
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. Choose your country. A hot water recirculating pump is installed on your water heater returning unused hot water back to the water heater. Domestic circulating water heaters.
It is designed to provide hot water on demand. With this option an additional pipe that is designated for hot water is installed in your home s plumbing. 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 installed on the hot water discharge line of your home s water heater and the sensor valve installed on the supply lines of a faucet at the farthest distance from the water heater.
Just before the loop enters the bottom of the hot water heater you might need to install a simple check valve. 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.