Pay in 4 interest-free payments of $6.39 Learn more
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
the SMART SYSTEM control module is the "brain" of the hydronic system
and the 11-circuit connector-to-blower deck transition
the Spirax-Sarco FT-30 features an internal balanced-pressure thermostatic air vent made of corrosion-resistant stainless steel
and Crest series units
While typically used for capacity control due to its Open-High action
Lennox 11J12 Pressure Switch 324846-701 the SMART SYSTEM control moduleEnsure 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