Lennox 11J12 Pressure Switch 324846-701 the Spirax-Sarco FT-30 features an

the Spirax-Sarco FT-30 features an internal balanced-pressure thermostatic air vent made of corrosion-resistant stainless steel

and Crest series units

This genuine Lennox replacement part is compatible with various KHA and KHC series units

55" WC threshold while checking for electrical continuity across the terminals when the set point is achieved

Efficient Troubleshooting: Durable SPST contacts allow for quick continuity testing during routine preventative maintenance

Lennox 11J12 Pressure Switch 324846-701 the Spirax-Sarco FT-30 features anEnsure your combustion air system is operating within manufacturer parameters with the Lennox 11J12 Pressure Switch. This critical safety component is a high altitude specific differential switch designed for Lennox furnace repair and maintenance, featuring a factory set . 85" WC pressure switch actuation point. Engineering for precise draft proving, this part monitors the static pressure within the inducer housing to confirm proper venting before