Lennox 14A51 Pressure Switch 320819-301 ensuring a perfect airtight lock

ensuring a perfect airtight lock

it must be mounted in the upright position to ensure the pilot-operated diaphragm functions correctly and prevents sluggish operation

the "U" suffix denotes "universal" retail packaging

provided the load does not exceed its rated amperage

Lennox 14A51 Pressure Switch 320819-301 ensuring a perfect airtight lockEngineered as a high precision safety and sequencing component, the Lennox 14A51 Pressure Switch provides critical draft verification for two stage gas furnaces. This OEM sensor features a factory calibrated set point high of 0. 74" W. C. and a set point low of 0. 41" W. C., ensuring the inducer motor maintains the exact static pressure required for safe combustion. Built to withstand the harsh vibration and thermal cycles of an 80% to 95% efficiency