F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
F24H 4/04 (2006.01) F24H 9/18 (2006.01) F24H 9/20 (2006.01) F25B 30/02 (2006.01)
Patent
CA 2709062
A heat pump water heater has a tank portion, an electric heating structure for adding electrical heat to water stored in the tank, and a heat pump for adding refrigerant heat to the tank water. A control system associated with the water heater has three user- selectable heating modes for heating the tank water during a given heating demand cycle - a first mode that initially heats the tank water with refrigerant heat while the electric heat is locked out for a first predetermined period before supplementing the refrigerant heat if necessary, a second mode similar to the first mode but with a longer electric heat lockout period, and a third mode in which only the electric heat is utilized to satisfy a tank water heating demand. Illustratively, the heat pump is disposed in a compact component arrangement on the top end of the water heater tank.
Bergt Carl
Kleman Kelvin W.
Koivistor Randy R.
Daniels Kent J.
Rheem Manufacturing Company
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