Method of operating a natural gas furnace with propane

Details Method of operating a natural gas furnace with propane Method of operating a natural gas furnace with propane

1989-11-13

1990-10-16

Jones, Larry

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

236 15BD, 431 2, 237 53, 126110E, 126110R, 126 99R, F24H 300

Patent

active

049627490

ABSTRACT:
In a gas furnace designed for operation with natural gas, the use of propane as a fuel is facilitated by increasing the inducer speed by a factor which is obtained by comparing the higher inducer speed necessary to bring down the heat exchanger temperature to an acceptable level, with the original lower inducer speed that had caused the temperature to exceed the allowed limit. Provision is made for electronically applying the multiplying factor by simply operating a gas selector switch.

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patent: 4895082 (1990-01-01), Mindermann et al.

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