we recommend inspections every 6 months

Long-Term Durability: Rated for 60

ensure the pneumatic control air is clean and dry to prevent premature component failure

Durable Construction: Built with robust materials to withstand the high-pressure environment of 5-ton R-22 systems

Built to handle a maximum working pressure of 680 psig and fluid temperatures up to 250°F

Lochinvar & A.O. Smith 100167799 Control Board R-410A we recommend inspections every 6As a veteran tech, you know that a glitchy boiler often traces back to the primary logic center. The Lochinvar & A. O. Smith 100167799 Control Board is the definitive OEM replacement part for high efficiency hydronic systems. This integrated control board is a direct, drop in successor to the discontinued RLY30043, ensuring 100% circuit board compatibility without requiring harness modifications. Engineered specifically for the Lochinvar Knight