York S1-024-34769-000 Pressure Switch Els PW 17895 this 40VA step-down transformer handles

this 40VA step-down transformer handles high-voltage 277/480V primary inputs

Check for continuity across the coil terminals (usually 1 and 3) using a multimeter

BB-series coils are physically different and often utilize a junction box or conduit boss

Horizontal mounting will cause the setpoint to shift due to the weight of the diaphragm

York S1-024-34769-000 Pressure Switch Els PW 17895 this 40VA step-down transformer handlesThe York S1 024 34769 000 Pressure Switch is a high precision safety sensor specifically calibrated for York, Coleman, and Luxaire gas furnaces. This Normally Open (N O) differential switch monitors the vacuum created by the draft inducer motor to ensure proper combustion air flow before allowing ignition. With a factory calibrated 1. 60" WC set point and a 0. 4" WC reset, this component prevents the unit from operating under hazardous venting