Patent ID: 8261733
Filing Date: 2012-09-11
Classification: F23N,F24H,G05B

Abstract:
1. A method of controlling a modulating gas furnace: operating at least one general-purpose processor system, the at least one general-purpose processor system being configured to monitor a differential pressure associated with the modulating gas furnace; operating the general-purpose processor system to learn an intermediate value associated with an intermediate capacity between a minimum output capacity of the gas furnace and a maximum output capacity of the gas furnace; operating the general-purpose processor system to learn one of a high value associated with the maximum output capacity and a low value associated with a minimum output capacity; operating the general-purpose processor system to establish an estimated operating curve using either the intermediate value and the low value or using the intermediate value and the high value; and operating the general-purpose processor system to control the gas furnace in accordance with the estimated operating curve.