the unit converts thermal energy into a proportional pneumatic output for seamless integration with legacy building automation systems

ensuring the static pressure is correctly maintained for the pressure switch to close during the pre-purge cycle

This genuine part ensures the boiler control module receives "clean" power to manage outdoor reset functions and domestic hot water priority without interference

As an industry-standard gas control thermostat

Lennox 79J73 Control Limit 326070-701 the unit converts thermal energyWorking with high static environments or Lennox rooftop units requires a manual reset limit switch you can depend on. The Lennox 79J73 Control Limit is a critical safety component designed to monitor discharge air or internal heat exchanger temperatures. When temperatures exceed the calibrated threshold, this high temperature limit switch breaks the 24V control circuit, immediately shutting down the burners or heating elements to prevent catastrophic