Cleveland Controls FS-BO-178 Proving Switch Els PW 17895 Precision Calibration: Optimized for iComfort

Precision Calibration: Optimized for iComfort communicating thermostats

which is critical for maintaining a stable and consistent pilot flame required for proper thermocouple heating and reliable burner ignition

this triple stacked thermal time delay relay manages the staggered activation of heating elements and blower motors

this genuine OEM part offers a reliable coil response and low contact resistance to prevent terminal meltdowns

simplifying inventory management and part identification

Cleveland Controls FS-BO-178 Proving Switch Els PW 17895 Precision Calibration: Optimized for iComfortThe Cleveland Controls FS BO 178 is a heavy duty, factory calibrated air flow proving switch designed for critical monitoring in duct heaters, ovens, and sophisticated HVAC energy management systems. This model features a precise, non adjustable set point of 0. 05" w. c., ensuring consistent actuation on positive pressure rise without the risk of field tampering. Built with a rugged plated housing and a high performance silicone diaphragm, the FS BO