Abstract: A water heater that is controlled by a plurality of offsets depending on at least one of predicted current usage of the water heater and preset user set point temperature results in energy saving without affecting user comfort and eliminates the need for additional hardware. The average temperature of the water is lower than in the case where a single preset offset is adjusted, thereby resulting in energy saving.

Abstract: An electronic control unit for controlling an electronic controlled multistage gas valve (MGV) for adjusting gas flow to a gas fired appliance. In an exemplary embodiment, an electronic control unit generally includes an integrated furnace control (IFC) unit, a multistage gas valve control (MGVC) unit electronically coupled to the IFC unit, and a coil electronically coupled to the MGVC unit. The IFC unit is operable for providing at least one power supply signal over a first communication line and at least one pulse width modulated (PWM) duty cycle signal over a second communication line to the MGVC unit for controlling at least one of energizing and de-energizing of the coil. The electronic controlled MGV is adapted to move in response to a magnetic field generated by the coil.

Abstract: A water heater that is controlled by a plurality of offsets depending on at least one of predicted current usage of the water heater and preset user set point temperature results in energy saving without affecting user comfort and eliminates the need for additional hardware. The average temperature of the water is lower than in the case where a single preset offset is adjusted, thereby resulting in energy saving.

Abstract: Disclosed herein are exemplary embodiments of an electronic control unit for controlling an electronic controlled multistage gas valve (MGV) for adjusting gas flow to a gas fired appliance. In an exemplary embodiment, an electronic control unit generally includes an integrated furnace control (IFC) unit, a multistage gas valve control (MGVC) unit electronically coupled to the IFC unit, and a coil electronically coupled to the MGVC unit. The IFC unit is operable for providing at least one power supply signal over a first communication line and at least one pulse width modulated (PWM) duty cycle signal over a second communication line to the MGVC unit for controlling at least one of energizing and de-energizing of the coil. The electronic controlled MGV is adapted to move in response to a magnetic field generated by the coil.