Building heating and cooling system

Details Building heating and cooling system Building heating and cooling system

G - Physics

05

D

341/27

G05D 23/19 (2006.01) F24F 11/00 (2006.01) G05D 23/275 (2006.01)

Patent

CA 1043446

Abstract of the Disclosure. A home includes a zone of rooms used in the day- time and a second zone includes rooms used in the evening. A furnace is provided for heating and cooling each of the rooms in each of the zones. A damper having a reversible motor is provided in each of the ducts supplying conditioned air to each of the rooms. The fuel valve is controlled by separate thermostats for each of the zones in turn controlled by a clock timer. At the beginning of the evening period the clock timer closes a circuit through the reversible motors closing the dampers in the daytime rooms and opening the dampers in the nighttime rooms and also closing a circuit through the nighttime thermostat for operating the solenoid fuel valve. When the damper has moved to its open or closed position it opens a limit switch stopping the reversible motor. The other switch is closed and ready to make a circuit through the reversible motor at the beginning of the daytime period as set on the clock timer when a circuit will then be made again through the reversible motor closing the dampers in the rooms in the nighttime zone and opening the dampers in the rooms in the daytime zone. The circuit through the nighttime thermostat is now open and the daytime thermostat is closed for controlling the fuel valve. Similar dampers may be provided in the air return ducts if desired. A manual switch is provided for each damper which, when actuated, opens up the circuits including the clock timer thereby hold- ing the dampers in either closed or opened positions as desired. -1-

220969

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