Operational Efficiency: Eliminates temperature hunting

The assembly comes pre-configured with a natural gas orifice

Precise Thermal Calibration: Fixed 140°F opening point with a 30°F differential ensures consistent safety cycling

If the switch opens at 150°F

which is the primary solution for restoring design-specified air handler performance and preventing coil icing

York 1NP0457 Propane Kit 322056-301 Operational Efficiency: Eliminates temperature huntingThe York 1NP0457 Propane Kit is an essential OEM component designed for field converting natural gas furnaces to liquid propane (LP) operation. As a technical professional, you recognize the necessity of precise combustion tuning; this S1 1NP0457 LP conversion kit provides the specific burner orifices and gas valve regulator springs required to maintain BTU input accuracy and flame stability. Engineered for high efficiency and standard efficiency York