Ensure the pilot electrode and burner ground wire are properly connected to the SENSE terminal

For proper operation of the pilot assembly and vent limiting orifice

1-inch bearing socket accepts standard Lennox replacement bearings for streamlined servicing

this high pressure cutout switch features a factory-set 650 PSI open and a 460 PSI close threshold

Used with 13" Diameter MP953C

York S1-063-90038-023 Plate 323269-701 Ensure the pilot electrode andEnsure your combustion assembly is calibrated correctly with the York S1 063 90038 023 Ventor Plate. This critical OEM component features a 2. 125 inch orifice, precision engineered to regulate the static pressure and airflow exiting the inducer blower assembly. As a veteran technician knows, the correct orifice size is paramount for maintaining the stoichiometric balance required for efficient combustion and preventing pressure switch trip outs.