With 18-inch wire leads

These cast iron flanges are primarily intended for technical HVACR applications

This OEM replacement relay is verified for use in a broad range of legacy and current models

including units from Heil

including Sleep mode

York S1-1PS3302 Conversion Kit 318172-701 With 18-inch wire leadsThe York S1 1PS3302 Conversion Kit is a critical component for field converting standard gas furnaces for high altitude propane operation. Designed specifically for York furnace pressure switch replacement and manifold adjustments, this kit ensures the burner flame remains stable and efficient in thinner 4,500+ foot atmospheres. Proper installation of the S1 1PS3302 propane conversion prevents nuisance pressure switch trips and combustion instability,