ensuring proper fitment and terminal alignment without field modifications

Broad Compatibility: Fits Johnson Controls V-3974

High Capacity: Rated for up to 70

Always check your defrost sensor resistance against the manufacturer’s chart before replacing the board

What is the importance of the 1/2" bore size

Lochinvar & A.O. Smith 100276843 Gasket R-407C ensuring proper fitment and terminalFor high performance hydronic and domestic hot water systems, the Lochinvar & A. O. Smith 100276843 Gasket is a critical OEM component designed to maintain the integrity of the 2 burner assembly interface. As a veteran technician knows, achieving a precise combustion chamber seal is non negotiable for system safety and operational efficiency. This high temp gasket provides a robust barrier between the burner manifold and the heat exchanger,