Common indicators include the hot surface igniter glowing without flame production

ensuring a rigid structure that resists bowing under high static pressure

Precise Regulation: Integrated pressure regulator is factory-set for natural gas

ensuring safety and performance in high-heat environments

ensuring your furnace operates at peak performance

Lennox 47W36 Indoor Zone Sensor 322838-752 Common indicators include the hotThe Lennox 47W36 Indoor Zone Sensor is a critical 20k Ohm NTC thermistor designed for precision climate monitoring in Lennox commercial HVAC systems. Engineered to integrate seamlessly with the ComfortSense 7500 and 8500 series thermostats, this remote temperature sensor provides high accuracy resistance data to the primary controller, allowing for balanced airflow and optimal setpoint management in multi zone configurations. Measuring 3" W x 4. 56" H