mounting hardware and secondary ignition components should be inspected and reused or replaced separately if necessary

Designed specifically for Intermittent Ignition Device (IID) systems

This unit features a standard 1/2-inch inlet and outlet for compatibility with common residential burner assemblies

This 120-150F AUTO Limit Switch features an automatic reset function

Will this spring work with both Natural Gas and Propane applications

Trane SWT2973 Pressure Switch 319825-402 mounting hardware and secondary ignitionThe Trane SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at 1. 33" WC and close at 1. 52" WC, preventing unsafe