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The Lochinvar 100277781 is a state-of-the-art integrated control board specifically designed for Crest FB 751-1251 heating boilers, starting with serial number 4015. This precision-engineered component is crucial for optimal performance and efficiency of your heating system.
This control board is a direct replacement for units beginning with serial number 4015, simplifying maintenance and upgrades without the need for system modifications.
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