The board includes integrated diagnostic capabilities to facilitate field troubleshooting

The explosion-proof (XPRF) solenoid enclosure meets NEMA standards for hazardous locations

and reinforced diaphragms

Operating at a nominal 1

the metallurgy and internal seals are rated for both legacy R22 systems and high-pressure R410A applications

Lochinvar & A.O. Smith 100208470 Control Board 319825-402 The board includes integrated diagnosticThe Lochinvar & A. O. Smith 100208470 Integrated Control Board is a critical OEM replacement component engineered specifically for SYNC SBN1300 1500 condensing boilers. As a primary main control power module, this board facilitates precise management of the combustion process, including modulating firing rates and integrated modbus communication for advanced system networking. This unit serves as the direct replacement for obsolete Lochinvar RLY20055