Lochinvar & A.O. Smith 100109944 Ignition Board L99H008 25" STD designation refer to

25" STD designation refer to the port size

the HT01CN230 is engineered to operate efficiently on both 50Hz and 60Hz frequencies

utilizing a 1/2-inch bore for seamless integration with compatible PSC and ECM motors

The 6H is a one-piece solid construction

Lochinvar & A.O. Smith 100109944 Ignition Board L99H008 25" STD designation refer toThe Lochinvar & A. O. Smith 100109944 Ignition Board is a critical OEM replacement part engineered for high performance commercial gas water heaters. Designed for precision ignition control, this integrated circuit manages the HSI (Hot Surface Ignition) sequence, ensuring consistent flame sensing and gas valve timing for specific BTN and BTR 500 series units. As a verified factory replacement board, it eliminates the timing issues and terminal