Lochinvar & A.O. Smith 100111041 Controller 321042-401 mixing them will cause hazardous

mixing them will cause hazardous combustion conditions

ensuring exact geometric alignment with the pilot assembly

the logic board kit may be compromised

while its compact size and lightweight design allow for seamless integration onto 1/4-inch SAE female flare fittings without additional brackets

Lochinvar & A.O. Smith 100111041 Controller 321042-401 mixing them will cause hazardousThe Lochinvar & A. O. Smith 100111041 Combined Controller is the critical OEM replacement for BTH 250 100 high efficiency commercial water heaters. As a veteran grade HVAC control board, this unit integrates ignition control, temperature regulation, and diagnostic functions into a single combined controller module. It serves as a direct, high performance successor to obsolete part number 9006265005. Designed for demanding commercial environments, this