The unit requires a 24VAC power source

the FS-BO series is typically utilized to sense pressure relative to the sampling probe location

replacing this ignition wire set is the standard solution

consolidated into a single

using desiccant packs or proper drainage loops in the conduit can prevent moisture from bridging the gap between the sensing and ground wires

Lennox 10U94 Pressure Switch 340793-762 The unit requires a 24VACThe Lennox 10U94 Pressure Switch is the OEM replacement for 103614 09, engineered specifically for high efficiency gas furnace applications. This SPST pressure switch is factory calibrated to a . 90" wc set point, providing critical safety monitoring of the inducer motor and venting system vacuum. Designed for Lennox, Armstrong, and Ducane units, it serves as a direct furnace air pressure switch replacement for several legacy components, including