Lochinvar & A.O. Smith 100287156 Sensor 326058-756 It uses a standard 1/4"

It uses a standard 1/4" NPT gas connection and a 1/8" NPT vent port

or dual-fuel forced draft burners

This unit serves as the direct replacement for obsolete Lochinvar RLY20055 series boards

offering improved component density and updated relay logic

Reversing the action typically requires changing the actuator mounting or control logic rather than internal mechanical modification

Lochinvar & A.O. Smith 100287156 Sensor 326058-756 It uses a standard 1/4"Ensure your high efficiency condensing boiler or water heater maintains optimal operation with the Lochinvar & A. O. Smith 100287156 Flue Temp Sensor Kit. This genuine OEM flue temperature sensor is engineered to provide precise thermal feedback to the integrated control board, preventing hazardous heat buildup and potential heat exchanger damage. Designed for a broad range of Lochinvar Knight and A. O. Smith Cyclone models, this thermistor based