Daikin-McQuay 066540601 Limit Switch 319847-401 and flow characteristics (linear or

and flow characteristics (linear or equal percentage)

this genuine Johnson Controls manufactured board provides the exact logic required to restore factory-spec performance and optimize system efficiency

System Reliability: Restores factory-standard performance to outdoor heat pump units during seasonal transitions

this valve features an adjustment stem

5" WC output for optimal burner combustion and efficiency

Daikin-McQuay 066540601 Limit Switch 319847-401 and flow characteristics (linear orThe 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