this component is optimized for the pressure profiles and lubricant compatibility of modern heat pump systems

the unit includes a pre-wired 45-1100M wire harness

as well as oil and coal applications

Key Benefits: Precision Compatibility: Engineered as a direct-fit OEM replacement for Hydrotherm KN-4 series boiler control interfaces

Resideo SDCR Relay 323613-751 this component is optimized forThe Resideo SDCR Relay is an essential slave damper control relay designed for professional HVAC partitioning where existing zone panel contacts aren't sufficient to handle the total inductive load. This 4PDT relay (4 pole, double throw) lets a single zone output synchronize up to nine dampers, provided the secondary power supply is correctly sized. Built for high density HVAC zoning systems, the SDCR effectively manages multiple damper actuators like