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process piping
the PTFE (Teflon) components are rated for saturated steam applications
replacing the complete ECM blower motor with module ensures the internal windings and the controller are perfectly matched
separate internal trap plugs may be required depending on the specific furnace orientation and drainage layout
Common indicators include specific burner control lockout codes (such as "Flue Temp High")
Lennox 12L46 Pressure Switch 320788-703 process pipingThe Lennox 12L46 Pressure Switch is a critical safety component designed for precise furnace air pressure monitoring in Lennox heating systems. Featuring a factory set actuation point of . 40" wc (water column) and a 0. 55" wc reset, this SPST (Single Pole Single Throw) switch ensures the inducer motor is generating sufficient draft before allowing the ignition sequence to proceed. As a veteran grade OEM Lennox replacement part, it is engineered to
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