Using a switch with a higher or lower WC pressure rating than the -1

and Intertherm heat pump systems

which is critical for preventing delayed ignition

the AFS-271 utilizes a snap-acting SPDT switch to provide reliable electrical switching under low-pressure conditions

Cleveland Controls AFS-952-1-B Switch R-410A Using a switch with aThe Cleveland Controls AFS 952 1 B is a heavy duty adjustable differential pressure switch engineered for sensing air flow and pressure in rigorous commercial and industrial HVAC applications. Featuring a robust NEMA 4 enclosure, this unit provides superior protection against dust and moisture, making it ideal for rooftop units and harsh mechanical environments. The AFS 952 1 B offers a precise set point range of . 05" to 12. 0" w. c., allowing for