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| Application No. | Application Title | Issue Date |
| 20110309155 | Thermostat Algorithm for Fully Modulating Furnaces A method and system for operating a modulating furnace from a single-stage thermostat. The furnace control system may include a processor, a gas valve, a variable-speed motor, and a thermostat. The furnace control may execute a thermostat algorithm comprising the steps ... | 12/22/2011 |
| 20110269082 | GAS PRESSURE CONTROL FOR WARM AIR FURNACES Systems, methods, and controllers for controlling gas-fired appliances such as warm air furnaces are disclosed. An illustrative furnace system can include a burner unit in communication with a combustion air flow conduit and heat exchanger, a variable speed inducer fan ... | 11/03/2011 |
| 20080124667 | GAS PRESSURE CONTROL FOR WARM AIR FURNACES Systems, methods, and controllers for controlling gas-fired appliances such as warm air furnaces are disclosed. An illustrative furnace system can include a burner unit in communication with a combustion air flow conduit and heat exchanger, a variable speed inducer fan ... | 05/29/2008 |
| 20070187519 | APPLIANCE CONTROL WITH AUTOMATIC DAMPER DETECTION Methods and systems for operating a fuel fired appliance that may include an optional hardware component such as a damper are disclosed. In some cases, the presence of the optional hardware component is detected, and it is determined whether the optional hardware compon... | 08/16/2007 |
| 20060214015 | Damper position adjusting device and combustion apparatus equipped with the same Provided is a damper position adjusting device allowing adjustment of the position of a damper and capable of detecting any possible rotational abnormality in the damper. The damper position adjusting device is applied to a combustion apparatus such as a boiler 1... | 09/28/2006 |
| 20060026974 | Hot-water supply apparatus, anti-freezing method thereof, and anti-freezing program thereof A hot-water supply apparatus is an apparatus which has a primary heat exchanger absorbing sensible heat of combustion exhaust and a secondary heat exchanger absorbing latent heat of the combustion exhaust, and improves a freezing prevention function of the hot-water sup... | 02/09/2006 |
| 20050156051 | Space heating and cooling An air handler operates alternately in (a) a heating state at times when air in a space in a building is at an actual temperature that is insufficient relative to a set temperature and (b) a non-heating state at times when the air in the space is at an actual temperatur... | 07/21/2005 |
