and ozone during long-duty cycles

allowing the relay to handle complex switching tasks or secondary auxiliary signals within the air stream

High Carbon/Dust Capture: Efficiently traps large debris

If the high-limit switch fails or stays open

Common Questions Is the Secop 117U4123 compatible with other brands

Lennox 71G17 Vent Switch and ozone during long-duty cyclesThe Lennox 71G17 Vent Switch is a critical safety component designed for precise thermal monitoring in high efficiency HVAC systems. Engineered as a 300F manual reset limit switch, this device serves as a primary defense against dangerous flue obstructions or heat exchanger failures. When vent temperatures reach the 300 degree Fahrenheit threshold, the internal circuit opens, instantly terminating the gas valve signal to prevent carbon monoxide