ensuring the secondary 24V output remains stable for relays and contactors

providing a robust solution for economy-tier residential or light commercial retrofits

When you're out in the field servicing high-recovery natural gas units

Once the sensed temperature rises to the reset threshold of 50°F

Does it matter which way the wires are connected

Lennox 10J73 Pressure Switch 323613-751 ensuring the secondary 24V outputThe Lennox 10J73 Pressure Switch (Catalog Number 10J73, Model 103827 01) is a critical safety component designed for furnace applications to ensure the inducer motor is moving combustion air effectively. As a single pole, normally open switch, it is calibrated to a fixed set point of 0. 25 PF (inches water column), making it a precise replacement for the combustion air prover in Lennox G21, G24, G27, G28, G30, and G37 series furnaces. This HVAC