York S1-024-35903-000 Pressure Switch 321702-401 2 switch provides terminal connections

2 switch provides terminal connections for both the burner circuit and a separate line for a McDonnell & Miller Uni-Match or similar electric water feeder to maintain appropriate boiler water level automatically

preventing nuisance trips of the circuit breaker and enhancing overall cycle efficiency

Built for the Nordyne B6 control platform

Verified Performance: Comprehensive factory pressure and leak testing ensures immediate reliability upon installation

supporting up to 3 heating and 2 cooling stages

York S1-024-35903-000 Pressure Switch 321702-401 2 switch provides terminal connectionsThe York S1 024 35903 000 is a high precision dual stage pressure switch engineered for modern high efficiency gas furnaces. This component is critical for monitoring the static pressure generated by the draft inducer blower, ensuring the combustion process only initiates under safe venting conditions. With factory calibrated set points of . 45" WC and . 85" WC, this switch provides granular feedback to the integrated furnace control board regarding