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Reduced Operational Costs: Optimizing fan speed lowers total AMP draw and improves energy efficiency
Rugged Silver Contacts: Equipped with high-conductivity silver contact material for a 10 Amp load rating and long-term switching reliability
and 42V series Rheem and Ruud water heaters
The pilot-operated mechanism uses the refrigerant pressure differential to assist the valve in opening
Lochinvar & A.O. Smith 100277781 Control 326058-755 Reduced Operational Costs: Optimizing fanThe Lochinvar 100277781 Control (Model FB751 1251) is an integrated control board engineered specifically for Crest Heating Boilers. As a critical OEM replacement part, this module manages the firing sequence, ignition control, and safety parameters for high efficiency hydronic systems. This model is a direct boiler part replacement for units with serial numbers beginning with 4015, ensuring seamless integration with existing HVAC wiring harnesses and