Lennox 10M64 Limit Switch 321894-709 the NEMA 4X rating indicates

the NEMA 4X rating indicates protection against windblown dust

Common Questions: Can this valve be used with glycol

If the timer does not advance when power is applied

maintaining system static pressure and airflow efficiency

For cooling applications where the valve must open as temperature decreases

Lennox 10M64 Limit Switch 321894-709 the NEMA 4X rating indicatesThe Lennox 10M64 Limit Switch is a critical HVAC safety control designed to prevent heat exchanger damage by monitoring discharge air temperatures. This L190 40F limit switch features a fixed set point, opening the circuit at 190 degrees Fahrenheit and automatically resetting when the temperature drops to 150 degrees Fahrenheit. Engineered for high reliability applications, this SPDT limit control (Single Pole Double Throw) ensures precise thermal