Flow Indicator Assembly for Domestic Hot Water Priority

For use with the HEP series panels. When using the HEPPS priority switch, a flow sensor is installed in the DHW supply to the house downstream from the branch to the HEP panel. When the HEPPS detects water flow, it will turn off the primary pump in the HEP panel, until such time that the DHW flow to the house falls below ~0.5 US gpm.