Heil Quaker ICP 1187153 Limit Switch 321894-708 To maintain your system's design

To maintain your system's design airflow and prevent coil icing

This Relay in a Box (RIB) features a single pole double throw (SPDT) configuration with a 10 Amp contact rating

this furnace burner crossover ensures seamless flame propagation between burner tubes

it enters a lockout

Heil Quaker ICP 1187153 Limit Switch 321894-708 To maintain your system's designThe Heil Quaker ICP 1187153 Limit Switch, factory designated as the L55F 22 Limit Switch, is a critical safety component engineered for precise thermal regulation within Heil Quaker and International Comfort Products (ICP) furnace assemblies. This furnace high limit switch is designed to monitor internal temperatures and interrupt the burner circuit if the heat exchanger exceeds its safe operating ceiling. This helps prevent thermal stress and