Lennox 12L46 Pressure Switch 321894-706 provided the ambient temperature at

provided the ambient temperature at the actuator does not exceed 150°F

setting indicated on the scale

For technicians performing 700-456 installation

8 FLA rating and protect the internal windings

Lennox 12L46 Pressure Switch 321894-706 provided the ambient temperature atThe Lennox 12L46 Pressure Switch is a critical safety component designed for precise furnace air pressure monitoring in Lennox heating systems. Featuring a factory set actuation point of . 40" wc (water column) and a 0. 55" wc reset, this SPST (Single Pole Single Throw) switch ensures the inducer motor is generating sufficient draft before allowing the ignition sequence to proceed. As a veteran grade OEM Lennox replacement part, it is engineered to