This specific model features standard 1/4" HAV fittings without built-in ball valves

optimized for efficient air displacement

The formula is particle-free and compatible with all HVACR oils and refrigerants

Can I use standard THHN wire instead of the 97575

Lochinvar & A.O. Smith 100208488 Relay Board R-410A This specific model features standardThe Lochinvar & A. O. Smith 100208488 Relay Board is a critical OEM replacement part engineered for high performance hydronic heating and water heating systems. As the direct replacement for RLY2049, this board facilitates precise communication between the Smart System control module and peripheral components, including pumps, fans, and gas valve relays. Designed for Lochinvar Knight boilers and A. O. Smith commercial units, it ensures accurate