Cleveland Controls DFS-231-121 Switch Els PW 17895 or an over-fired burner

or an over-fired burner

The unit is designed to remain unaffected by momentary short circuits and is rated for ambient temperatures up to 150°F

depending on the specific York control board requirements and burner configuration

It is compatible with B100 or B400 Series adapter bases

Is the 632622R compatible with all Nordyne furnaces

Cleveland Controls DFS-231-121 Switch Els PW 17895 or an over-fired burnerThe Cleveland Controls DFS 231 121 is a fixed setpoint diaphragm differential pressure switch engineered for precision performance in HVAC pressure monitoring and combustion air applications. This SPDT air flow switch is factory calibrated to actuate on a pressure rise at 0. 05" . 02" w. c., providing a reliable safety interlock for systems requiring strict static pressure thresholds. Designed for versatility, the unit supports line voltage ranges