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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||392/307 ; 165/29 ; 236/91F|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 23 인용 특허 : 0|
A heating system has a primary heat source such as a heat pump, with a capacity that occasionally needs to be supplemented from a supplemental heat source such as an electrical resistance heater. The heating system heats and circulates a medium such as air via supply and return ducts. A thermostat responsive to the heated space has two outputs for operation at different user-selected temperatures defining stages of operation at which the primary and secondary heat sources are normally drawn upon. The invention controls the duct temperature by activating ...
In a heater system having a primary heating means operable to heat and circulate a medium via a duct, and a supplemental heating means for further heating the medium when necessary to supplement the primary heating means for maintaining a desired temperature in a heated space, the primary and supplemental heating means being activatable in part by a thermostat responsive to the heated space, having at least two outputs respectively indicating a heated space temperature falling below one of two space temperature setpoints, of which one is the desired temp...