Correct installation requires ensuring the groove is free of debris and lightly lubricated with system-compatible oil to prevent twisting or binding during assembly

This 1/2" bimetal disc limit switch features a fixed open temperature of 170°F and a fixed close temperature of 130°F

This specific York temperature limit switch is typically utilized in 24V control circuits

For contractors servicing mobile home furnaces or residential air handlers

It is commonly used as a universal large-format guard for various 24V control brands

Copeland Comfort Control (White Rodgers) 3L09-12 Limit Switch Correct installation requires ensuring theThe Copeland Comfort Control (White Rodgers) 3L09 12 Limit Switch is a high reliability 1 2" bimetal disc limit control engineered for precision high limit protection in residential and commercial furnaces. This board mounted HVAC limit switch features a fixed open temperature of 220F and a fixed close temperature of 180F. Operating on an open on rise switch action, it serves as a critical safety component to prevent heat exchanger damage or hazardous