Patent ID: 7553151

Claim:
A heater comprising: a burner; a valve having a high flow stage and a low flow stage and operatively connected to said burner for providing said burner with a fuel; an inducer having a high speed stage and a low speed stage and operatively connected to said burner for providing said burner with combustion air; a thermostat electrically coupled to at least one of said valve and said inducer with said thermostat generating at least one signal for controlling at least one of said valve and said inducer; and a control board electrically connected between said thermostat and both of said valve and said inducer and including an input bus, an inducer relay for switching said inducer between said high speed stage and said low speed stage, a start relay in communication with said input bus for receiving a start signal from said input bus and activating said inducer relay in response to the start signal, a delay timer in communication with said start relay for activating said start relay with the start signal after a start delay period has elapsed, a valve relay for switching said valve between said high flow stage and said low flow stage, a control timer in communication with both said inducer relay and said valve relay for receiving the at least one signal from said thermostat and switching said valve between said high flow stage and said low flow stage and said inducer between said high speed stage and said low speed stage, respectively, in response to the at least one signal after a delay period has elapsed, and an output bus in communication with said valve and said inducer, wherein said input bus, said inducer relay, said valve relay, said control timer, and said output bus are mounted to said control board to define a singular and compact controller.