A controller for a gas furnace, a computer-usable medium for implementing a method and a gas furnace are disclosed herein. In one embodiment, the controller includes: (1) an interface configured to receive a heating call and (2) a processor configured to enable an inducer of the gas furnace at a low speed based on the heating call and ignite the gas furnace at a high fire operation when determining a low fire pressure switch of the gas furnace is open.

A motor controller for a draft inducer motor that operates an inducer blower in a furnace is provided. The motor controller includes a communication interface operable to receive a signal from a system controller. The signal represents a command to operate the draft inducer motor. The motor controller includes a processor operable to operate the draft inducer motor in accordance with a predefined motor speed profile during at least one of an ignition stage and a combustion stage of the furnace.

Exemplary embodiments of a system and method for bimodal air control in a kettle-style grill are configured to be detachably mounted to the exterior of a kettle-styled grill such as, but not limited to, a Weber® charcoal grill. When mounted to the kettle-styled grill, a plenum-like component directs air flows to the interior of the grill's kettle via the kettle's lower body damper holes. A manually adjustable intake damper in the plenum component allows, restricts, or prevents a drawn ambient air flow into the plenum component. Separately, a forced air flow generated by a fan may also be provided into the plenum component. Adjustment of the intake damper may also adjust damper blades inside the grill's kettle. Ash that falls out of the kettle's damper holes falls through the plenum component and is captured in an ash receptacle that is removably mounted to the plenum component.

A system for a forced air flow into a kamado-style cooker comprises a control unit and an adapter defining an airflow duct with an entrance aperture and an exit aperture. The adapter is configured to removably mount over a lower damper port in a kamado-style cooker such that the exit aperture is aligned with the lower damper port. The control unit comprises an electric fan, one or more sensor input ports, and an airflow exit duct. The control unit is configured to separably mate with the adapter such that the airflow exit duct of the control unit is received by the entrance aperture of the adapter. Advantageously, a forced air flow generated by the electric fan, in response to a temperature signal input, passes out of the control unit, through the adapter, and into a body portion of the kamado-style cooker to encourage, facilitate and manage combustion within the cooker.

A hot water supply device includes: a combustion part including a first burner part for which a flame sensor is disposed and a second burner part having a different number of burners from the first burner part such that one or both of the burner parts perform combustion, the flame sensor being configured to detect combustion state information of a flame generated by burners; a combustion control part configured to monitor a combustion mode of the combustion part set in accordance with a hot water supply request and change a second combustion mode in which the first burner part does not perform combustion, to a first combustion mode in which at least the first burner part performs combustion, when the second combustion mode is continuing; and a combustion adjustment control part configured to execute a combustion adjustment process of the combustion part.

The presently disclosed embodiments include an appliance with a burn pot assembly and air distribution ducts that distribute air into a burn chamber of the burn pot assembly, and distribute heated air to a cooking chamber of the appliance. A first air supply system may distribute air into the burn chamber, and a second air supply system may distribute heated air through one or more outlet manifolds towards the cooking chamber.

An appliance includes a burn pot assembly and air distribution ducts that distribute air into a burn chamber of the burn pot assembly, and distribute heated air to a cooking chamber of the appliance. A first air supply system may distribute air into the burn chamber, and a second air supply system may distribute heated air through one or more outlet manifolds towards the cooking chamber.

An appliance includes a burn pot assembly and air distribution ducts that distribute air into a burn chamber of the burn pot assembly, and distribute heated air to a cooking chamber of the appliance. A first air supply system may distribute air into the burn chamber, and a second air supply system may distribute heated air through one or more outlet manifolds towards the cooking chamber.

In an aspect, an HVAC system includes an inducer motor to provide combustion airflow, and a pressure sensor to measure an output airflow pressure of the inducer motor. The HVAC system may initiate the inducer motor, and receive a pulse width modulation (PWM) signal from the inducer motor, wherein the PWM signal indicates a PWM signal of the inducer motor corresponding to a predetermined airflow pressure of the inducer motor and measured by the pressure sensor. The HVAC system may compare the PWM signal to a baseline value, and control the inducer motor based on the comparing of the PWM signal to the baseline value. The HVAC system may also generate a status notification of the combustion airflow of the HVAC system in response to the comparing the PWM signal to the baseline value.

A system for electronically controlling a vent damper for a gas oven.