The Williams P200900 Combustion Chamber Face Gasket is a critical sealing component designed specifically for Williams Forsaire Direct Vent wall furnaces

providing a direct-fit solution for restoring reliable burner light-off in the field

How do I test if this pressure switch is failing

the MARS U035F2 terminals are UL-approved for use with both 60°C and 75°C copper or aluminum wire

York S1-024-27659-001 Pressure Switch Els PW 17895 The Williams P200900 Combustion ChamberThe York S1 024 27659 001 is a high duty HVAC pressure switch replacement engineered for precise draft inducer monitoring within York, Coleman, and Luxaire gas furnaces. This SPST air pressure switch functions as a primary safety limit, utilizing a 0. 90" WC pressure switch setpoint to verify that the venting system is clear and the inducer motor is moving sufficient air for safe combustion. Equipped with a rugged diaphragm and a 1 4 barbed