Burnham 109108-01 Air Proving Pressure Switch 2.30" WC

The Burnham 109108-01 is an air proving pressure switch designed to provide critical safety monitoring for residential and commercial boiler systems. This switch is factory-calibrated to activate at 2.30 inches water column (WC), ensuring proper airflow verification before the combustion cycle begins.

Key Features:

• Fixed set point at 2.30" WC for precise pressure monitoring
• Verifies adequate combustion air supply before ignition sequence
• Prevents unsafe operating conditions caused by insufficient airflow
• Durable construction designed for long-term reliability in heating applications
• Direct replacement Burnham OEM component

Air proving switches are essential safety devices in gas-fired heating equipment. This switch monitors the pressure differential created by the combustion air blower, confirming that proper airflow exists before allowing the ignition system to operate. If the switch does not detect adequate pressure, it prevents the burner from firing, protecting the system from potentially hazardous conditions. The 2.30" WC setting makes this switch suitable for specific Burnham boiler models requiring this pressure threshold.