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maintaining the electrical integrity of the system without the "marketing fluff" of lower-tier universal components
Precise Thermal Response: Calibrated for an OP26 CL38 range to ensure accurate freeze protection and system safety
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 manual reset rollout switch is the standard OEM replacement for most furnaces under the Johnson Controls umbrella
Cleveland Controls DFS-221-156 Switch maintaining the electrical integrity ofThe 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