Simplified retrofit: The split-core iris snaps directly over insulated conductors

as a genuine Heil Quaker 1320363 part

this elastomeric seal ensures a leak-proof interface under varying pressure differentials and thermal cycles

all-in-one approach to mechanical ventilation and HVAC fresh air intake

the unit provides the necessary durability to handle frequent cycling and high-temperature flue gas environments

York S1-025-22273-001 Limit Switch 323613-751 Simplified retrofit: The split-core irisThe York S1 025 22273 001 Limit Switch is a critical OEM safety component designed for precise thermal management within HVAC furnace systems. This SPST (Single Pole Single Throw) fixed temperature control operates on an auto reset logic, ensuring the burner circuit opens when temperatures reach the 150F trip point and automatically closes once the system cools to 110F. Engineered for York, Coleman, and Luxaire gas furnaces, this high limit switch