How do I verify if the Nordyne 664229R is the correct manifold for my furnace model

Key Benefits Exceptional Moisture Capacity: High-grade desiccant prevents ice formation at the expansion valve and protects against refrigerant contamination

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

as well as oil and coal applications

and motor strain caused by unbalanced or debris-clogged wheels

Resideo SDCR Relay 323613-751 How do I verify ifThe 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