Lennox 11J12 Pressure Switch 324846-701 While the control circuit operates

While the control circuit operates on 120V

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

While typically used for capacity control due to its Open-High action

and the 11-circuit connector-to-blower deck transition

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

Lennox 11J12 Pressure Switch 324846-701 While the control circuit operatesEnsure 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