Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent
1987-06-29
1989-03-28
Scott, Samuel
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
Remotely controlled inspection means
165 14, 165 24, 165921, 236 11, 236 46E, F28F 2700, F23N 520, F25B 2900
Patent
active
048155241
ABSTRACT:
A furnace having the capability of operating its blower continuously is provided with means for automatically shutting off the blower at the beginning of a heating cycle and for resuming the operation thereof only after a predetermined time has elapsed to allow the heat exchanger to heat up to a temperature that exceeds the dew point of the flue gas, to thereby reduce the occurrence of cold spot corrosion in the heat exchanger. Provision is also made, in a two speed blower system, for operating at a lower speed during continuous mode and heating cycle operation, and for operating at the higher speed during the cooling cycles.
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Ballard Gary W.
Dempsey Daniel J.
Bigelow Dana F.
Carrier Corporation
Ford John K.
Scott Samuel
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