Description
The Burnham Boiler 105549-01 Air Proving Switch monitors airflow conditions within the furnace assembly to verify that proper draft is present before the burner cycle begins. It operates through pressure contacts that respond to airflow generated by the combustion blower, allowing the control circuit to continue only when secure operating conditions are detected. Positioned within gas-fired boiler HVAC systems, the switch connects to the venting or air pressure tubing and integrates with the unit control sequence. Its operation assists in reducing ignition interruptions, supports stable combustion oversight, and supports maintaining dependable heating performance.
