Description
The Utica-Dunkirk 240010151 Pressure Switch is an air pressure safety control component used to monitor draft or airflow conditions in gas-fired heating equipment. It operates by detecting negative pressure in the combustion or venting system and changing its electrical state when the airflow reaches the calibrated 1.72 inches water column threshold in HVAC systems. This action allows the furnace control circuit to confirm proper inducer operation and safe venting before ignition proceeds. Installed using tubing connections to the blower or draft sensing points, it works alongside the inducer motor, gas valve, and control board.
