Armstrong Fluid Technology 816303-317K Impeller Kit 321702-401 Check the flame sensor for

Check the flame sensor for carbon buildup and ensure the spark electrode air gap is within manufacturer specifications before replacing the board

Optimized Combustion: Delivers a consistent

ensuring compatibility with existing infrastructure

ensuring critical flue gas ventilation and safe combustion cycles

Contractors should verify the 1/2-inch bore size and clockwise (CW) rotation before installation to ensure compatibility with the existing motor shaft

Armstrong Fluid Technology 816303-317K Impeller Kit 321702-401 Check the flame sensor forThe Armstrong Fluid Technology 816303 317K Impeller Kit is a precision engineered OEM replacement part designed to restore the hydraulic efficiency of high performance circulator pumps. This comprehensive kit features a 5. 25 inch Noryl impeller, a high strength thermoplastic known for its exceptional dimensional stability and resistance to corrosion and scaling in demanding HVACR systems. By utilizing an injection molded replacement impeller kit,