this part number refers to the valve body and internal assembly only

It stands for Automatic Changeover

this model is a standard choice for VAV terminal units and small multizone dampers

Featuring a 48 Nema frame

Does this unit replace 2-wire or 4-wire sequencers

York S1-7990-6451 Inducer Assembly R-410A this part number refers toThe York S1 7990 6451 Inducer Assembly is a high performance draft motor designed for direct replacement in specific York, Coleman, and Luxaire gas fired furnaces. This 120V, single stage centrifugal blower operates at 2950 RPM, ensuring positive pressure is maintained to exhaust combustion gases through the flue pipe effectively. Engineered to meet OEM specifications, this assembly features a robust motor housing and a precision balanced impeller to