Helps maintain proper load response and efficiency

Hardware requirements can vary by housing

oil-filled design includes a built-in physical interrupter for safety

Common Questions: Is the 8402-067BX compatible with older Bard units

25 to 135 Amps

Lochinvar & A.O. Smith 100277770 Control 322055-301 Helps maintain proper load responseThe Lochinvar & A. O. Smith 100277770 Control is a critical integrated control board engineered for high output commercial boilers, specifically the FB1501 2001 series. As an essential OEM replacement part, this module manages the full ignition sequence, blower speed regulation, and safety circuit monitoring to ensure peak thermal efficiency. It is compatible with Power Fin and Crest models, including the FBL1501, FBL1751, FBL2001, FBN1501, FBN1751,