Lennox 71G17 Vent Switch Common Questions: Which valve bodies

Common Questions: Which valve bodies are compatible with this orifice

unobstructed discharge piping to a safe floor drain

The MARS 12751 fits most round-style mounting brackets with its standard 2-inch diameter

Can I use a generic O-ring instead of the B2832606

Lennox 71G17 Vent Switch Common Questions: Which valve bodiesThe 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