Lennox 46K72 Limit Switch 320819-301 This pilot burner assembly is

This pilot burner assembly is the industry standard for restoring reliable ignition and flame sensing in older gas-fired equipment

HVAC systems

Most failures are attributed to intake debris blocking the radial burner or voltage fluctuations impacting the 115V motor windings

This valve is designed for low-pressure applications with a maximum operating pressure differential of 25 PSI for air and fuel gas

Is the Watts 0009865 the correct sub for the 0821405

Lennox 46K72 Limit Switch 320819-301 This pilot burner assembly isThe Lennox 46K72 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC units. Engineered with a 250 degree Fahrenheit cutout and a 220 degree Fahrenheit reset, this auto reset limit switch prevents heat exchanger damage by breaking the electrical circuit if internal plenum temperatures exceed safe operating limits. This specific L250 30 model features a manual reset safety bypass or