Unlike standard general-purpose valves

Precision Engineering: Features a durable 115V motor designed for long-cycle reliability in residential and light commercial applications

or if the seal to the flue pipe has been compromised by mechanical stress

The large viewing lens allows technicians to verify full liquid flow and detect flash gas

Lochinvar & A.O. Smith 100277816 Control 319848-301 Unlike standard general-purpose valvesThe Lochinvar & A. O. Smith 100277816 Interface Control is an essential OEM replacement component designed for precision management of commercial and residential water heaters and boilers. As a veteran grade HVACR control board, this unit integrates advanced diagnostic capabilities with a clear LCD interface to provide real time data on system temperature, sequence of operation, and communication status. This high performance boiler interface control