this Fenwal ignition module supports both local and remote flame sensing (RemSen)

Featuring 3/4 inch sweat ODF connections

the 61 series remains the industry standard for durability and straightforward mechanical cut-off performance without the complexity of electronic sensors

Thermal Resilience: Rated for 200°C to withstand continuous operation in sealed FVIR combustion chambers without premature fatigue

Lochinvar & A.O. Smith 100074696 Computer Board 322056-301 this Fenwal ignition module supportsThe Lochinvar & A. O. Smith 100074696 Computer Board is a critical genuine OEM replacement part engineered for high efficiency tankless water heater control. Specifically utilized in Takagi T H3 DV and T H3 OS equivalent models, including the ATIO 540H series, this Computer Board 540 manages the modulation of the gas valve and fan speed to maintain precise discharge water temperatures. When troubleshooting water heater error codes such as the 101 or