preventing hazardous accumulation in the mechanical room

and irregular flame patterns

always use the 350F rollout switch specified by the manufacturer

Is this compatible with non-McDonnell & Miller controls

Industrial Grading: Built to withstand the high-temperature environments typical of commercial burner assemblies

Heil Quaker ICP 1320331 Limit Switch preventing hazardous accumulation in theThe Heil Quaker ICP 1320331 Limit Switch is a critical OEM replacement part designed for precision temperature regulation in ICP furnaces and high performance HVACR systems. Engineered with a factory calibrated 120 160F temperature range, this auto limit switch functions as a primary safety control, monitoring the thermal environment of the heat exchanger. When temperatures reach the upper 160? F threshold, the contacts open to interrupt the burner