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Precise Time Delay Functions: Protects the compressor and blower motor by preventing short-cycling and ensuring heat exchanger cooling
2 lb assembly allows for easier handling and installation in tight boiler cabinets
This unit is designed for field-service reliability
the HK42FZ053 is the current functional replacement for several discontinued HK42FZ series boards
Daikin-McQuay 066540601 Limit Switch 321042-401 Precise Time Delay Functions: ProtectsThe Daikin McQuay 066540601 is a high precision low temp limit switch engineered specifically for HVAC freeze protection in commercial air handling systems. As the direct replacement for 66540601, this critical safety control monitors coil temperature to prevent catastrophic failure caused by freezing conditions. Designed for integration with Daikin Applied and legacy McQuay chillers and AHUs, this manual reset device ensures the system shuts down or