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always inspect the fan blade hub for wear and ensure the CWLE rotation matches your airflow requirements
decreased airflow
How do I correct for zero-point drift after installation
Using this orifice in a propane system will cause hazardous combustion conditions and soot buildup
Is the gas valve regulator spring included in this kit
Armstrong Fluid Technology 816304-317K Plastic Impeller 318518-761 always inspect the fan bladeThe Armstrong Fluid Technology 816304 317K Plastic Impeller is a precision engineered circulator pump replacement part designed to restore peak hydraulic efficiency to your HVAC system. This 5 1 4" Noryl impeller is manufactured from high quality, non ferrous composite materials, offering superior corrosion resistance and durability in demanding hydronic applications. As the official 816304 317K maintenance kit, it serves as the direct OEM pump
