Cleveland Controls DFS-221-156 Switch It is commonly used for

It is commonly used for small banks of 24V sensors or as a local power source for building automation controllers

Designed for rigorous residential and light commercial applications

this liquid line sight glass is a critical diagnostic tool to prevent compressor damage caused by moisture contamination or low refrigerant charge

8 gal/min and a minimum pressure drop of 0

this manual reset rollout switch is the standard OEM replacement for most furnaces under the Johnson Controls umbrella

Cleveland Controls DFS-221-156 Switch It is commonly used forThe Cleveland Controls DFS 221 156 is a heavy duty, fixed point air pressure sensing switch engineered for precision airflow verification in HVAC, duct heater, and combustion systems. As a direct FS BO 179 cross reference, this SPDT switch is factory calibrated to actuate on a pressure rise of 0. 05" w. c. (+ 0. 02"), making it a critical safety component for proving draft in boilers and furnaces. Its open mounted design is specifically optimized for