US Patent:
20150118631, Apr 30, 2015
Inventors:
- Farmington CT, US
Kevin D. Thompson - Indianapolis IN, US
Eric E. Tournier - Zionsville IN, US
International Classification:
F27D 19/00
Abstract:
A device and method of controlling excess air during and after ignition of a gas furnace by operating a variable speed combustion blower assembly at an initial speed; operating a gas valve assembly and a burner assembly to initiate an ignition sequence; operating the variable speed combustion blower assembly at an increasing plurality of speeds until an excess air measurement is less than or equal to a predetermined value, and operating the variable speed combustion blower assembly at a steady state airflow rate to maintain the excess air measurement at the predetermined value.