Armstrong Fluid Technology 816304-317K Plastic Impeller 318518-761 Using this orifice in a

Using this orifice in a propane system will cause hazardous combustion conditions and soot buildup

but technicians should always verify the wiring diagram on the boiler's control cabinet before installation

decreased airflow

How do I correct for zero-point drift after installation

Armstrong Fluid Technology 816304-317K Plastic Impeller 318518-761 Using this orifice in aThe 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