Always verify the temperature rating and mounting style before installation in non-Nordyne units

a different control module is required

it is the correct match

How do I adjust the crossover point on the RCC-1001

Lochinvar & A.O. Smith 100311038 Control Board R-22 Always verify the temperature ratingThe Lochinvar & A. O. Smith 100311038 Control Board is a critical OEM replacement part designed for high efficiency commercial boilers and water heaters. As a veteran grade communication control board, this unit serves as the central nervous system for Series FB equipment, facilitating high speed data transmission between burners, sensors, and the user interface. This specific module is the direct replacement for 100276779, ensuring a drop in fit for