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Robust Construction: Lightweight aluminum body with NBR seating offers broad chemical compatibility with fuel gases
maintaining the necessary static pressure for optimal heat exchange
As a genuine thermostatic expansion valve
Balanced Construction: Factory-balanced to eliminate vibration
How do I verify if this 2-pole switch is compatible with my furnace
Lochinvar & A.O. Smith 100208496 Control Board 30067439-890 Robust Construction: Lightweight aluminum bodyThe Lochinvar & A. O. Smith 100208496 Control Board is a critical OEM replacement part designed to maintain the operational integrity of high efficiency commercial boilers and water heaters. As the direct replacement for RLY2107, this relay control board manages executive switching functions, including the 24VAC signal distribution to the ignition module and pressure switch systems. This board is essential for coordinating the two speed blower motor