and MR-300B

this control is gas-type neutral as it manages the electrical sequence

Streamlined Installation: The compact

They are interchangeable in all Lochinvar and A

Lochinvar & A.O. Smith 100167793 Control R-407A and MR-300BThe Lochinvar & A. O. Smith 100167793 Integrated Control is a critical OEM replacement part designed for high efficiency gas water heaters and boilers. This microprocessor based integrated control board acts as the central command for the unit, regulating ignition sequences, flame monitoring, and temperature modulation to ensure peak thermal efficiency. Specifically engineered for the Lochinvar KBN400 series with serial numbers prior to H10, this