replacing the 100167834 control is the standard protocol for restoring the user interface

" If the switch does not close once the plenum cools

Smith models requiring the 60TV-15 ECO specification

a restricted flue pipe

Belimo NFBUP-X1 Actuator 340155-7024 replacing the 100167834 control isThe Belimo NFBUP X1 is a heavy duty spring return valve actuator designed for reliable fail safe operation in demanding HVACR applications. This universal voltage actuator operates on a wide input range from 24V to 240V AC DC, providing high flexibility for field replacements and new installations. Engineering a consistent 90 in lb (10 Nm) torque output, the NFBUP X1 ensures positive close off on mechanical ball valves and butterfly valves. The