You must retain the plug from your original board and install it onto the new 1190668 furnace board to maintain correct factory settings

The standard Series 500 typically refers to the valve body

Field technicians prefer this model for its reliable automatic shut-off liquid level gauge functionality and robust construction in commercial HVAC and process piping systems

including C3 and C4 knockdown models

Armstrong Fluid Technology 816305-328K Impeller Kit 323613-751 You must retain the plugThe Armstrong Fluid Technology 816305 328K Impeller Kit is a precision engineered OEM replacement part designed to restore the hydraulic performance of your Armstrong S 45 Series pumps. This comprehensive centrifugal pump repair kit includes a 3. 88 inch plastic impeller, specifically molded from high strength polymers to resist corrosion and erosion in hydronic environments. To ensure a leak proof installation, the kit comes complete with a