while the NEMA 1 enclosure protects internal components in controlled environments

Precision Bias Tuning: Mechanical bias adjustment provides ± 5 psig offset to compensate for line loss or specific sequence requirements

capacitor requirements may vary

Whether you are performing an AC blower motor replacement or upgrading a commercial unit heater

this unit ensures minimal pressure drop and high resistance to contaminants

York S1-1PS3301 Conversion Kit 322055-301 while the NEMA 1 enclosureThe York S1 1PS3301 Conversion Kit is a specialized OEM component designed for 33 inch single stage furnaces operating at elevations exceeding 5,000 feet. At high altitudes, reduced air density impacts combustion stability; this kit replaces the factory standard pressure switch with Source 1 part S1 02435778000, featuring a specific 0. 60 IWG set point to ensure the draft inducer provides sufficient static pressure for safe operation. This high