System and method for on demand hot water distribution

Details System and method for on demand hot water distribution System and method for on demand hot water distribution

E - Fixed Constructions

03

C

E03C 1/02 (2006.01)

Patent

CA 2685787

A demand type, multiple use, hot water distribution and freeze protection system and method that responds to the user's desire for hot water at a particular sink or fixture by delivering hot water rapidly to that fixture, and only that fixture, without running water down the drain is disclosed. The system requires only one pump at the water heater, and does not require a dedicated hot water return line, but works with a dedicated line in retrofit applications. Circulating water in the plumbing system can also be used to protect plumbing from freeze damage. Each valve and activation device operates by transmitting a start command to the valve controller which sends the pump controller a start signal, the valve to open, hot water to circulate and the valve to close when the hot water arrives at the fixture preventing heated water from filling the cold water line.

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