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This genuine Lennox replacement part is compatible with various KHA and KHC series units
this unit is designed to automate control dampers and large-scale valves with precision
the SMART SYSTEM control module is the "brain" of the hydronic system
While the control circuit operates on 120V
Lennox 11J12 Pressure Switch 324846-701 This genuine Lennox replacement partEnsure 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