Nordyne 664640 Gas Manifold THPU32HP7Y which indicate a partial blockage

which indicate a partial blockage (often from spider webs or scale) or an undersized orifice

this close off is compatible with many CMF and M1 series coil cabinets that utilize the 355480R specification

Direct OEM Integration: Engineered for plug-and-play installation within Trane rooftop unit control compartments

Built for Longevity: Features a high-quality brass body and internal components designed to resist scale buildup and thermal fatigue in hot water systems

Service technicians often encounter failures in high-efficiency furnace draft switches due to moisture buildup or diaphragm fatigue

Nordyne 664640 Gas Manifold THPU32HP7Y which indicate a partial blockageThe Nordyne 664640 is an OEM gas manifold precision engineered for specific Cmf95 and M7 series high efficiency furnaces. Acting as the central distribution point, this component ensures steady fuel delivery to the burner assembly, facilitating uniform ignition and consistent manifold pressure. Fabricated from high grade materials to resist the thermal and chemical stresses of combustion environments, the 664640 manifold provides the structural