Gas-fired furnace control apparatus and method for...

Details Gas-fired furnace control apparatus and method for... Gas-fired furnace control apparatus and method for...

F - Mech Eng,Light,Heat,Weapons

23

N

341/38.5

F23N 1/02 (2006.01) F23N 1/00 (2006.01)

Patent

CA 1294344

GAS-FIRED FURNACE CONTROL APPARATUS AND METHOD FOR MAINTAINING AN OPTIMUM FUEL AIR RATIO ABSTRACT OF THE DISCLOSURE A control apparatus and method are provided for maintaining an optimum fuel air ratio in a direct vent gas-fired furnace. The control and method regulate the flow of fuel to the combustion chamber as a function of the pressure drop across the heat exchangers, thereby compensating for changes in certain operating parameters, such as vent pipe length, barometric pressure, and the like.

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