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A: It monitors refrigerant pressure and shuts down the compressor if pressure falls below the safe operating range
22 certified for residential
Proper installation of this high-limit safety control is essential for preventing premature blower cycling and ensuring the furnace operates within its designated thermal parameters
Fabricated from high-temperature-resistant metal alloys
Key Benefits Precise Compatibility: Engineered as a drop-in replacement for Barber Colman AT-11-399 and AT-24-399
Cleveland Controls DFS-448-153 Switch A: It monitors refrigerant pressureThe Cleveland Controls DFS 448 153 is a purpose built air flow switch designed for critical monitoring in industrial HVAC systems, air handling units, and duct heaters. This fixed set point air pressure switch is factory calibrated to actuate on a pressure rise of 0. 05" 0. 02" w. c., providing high accuracy sensing for equipment safety and cycle control. Featuring a SPDT switch configuration (Single Pole Double Throw), it facilitates versatile wiring