Lochinvar & A.O. Smith 100111100 Kit 321702-401 or intermittent flame loss during

or intermittent flame loss during the heating cycle despite a strong flame rectification signal

this versatile kit eliminates the need for separate tools

Precise Safety Calibration: Maintains a strict 120°F to 140°F operating range to protect the gas furnace from overheating and potential cracks in the heat exchanger

and bypass distribution systems up to 1000V

500 BTU compressor be used for 208V and 230V applications

Lochinvar & A.O. Smith 100111100 Kit 321702-401 or intermittent flame loss duringThe Lochinvar & A. O. Smith 100111100 Kit is a critical 3" Concentric Vent Kit engineered for high efficiency appliance installations. Designed for use with Lochinvar Knight boilers and A. O. Smith Vertex water heaters, this direct vent termination simplifies the management of intake and exhaust through a single sidewall penetration. Utilizing ULC S636 compliant materials, this kit ensures professional grade durability in demanding HVACR environments.