Lochinvar & A.O. Smith 100277940 Board 322838-754 including HC39VL236

including HC39VL236

High-Temperature Durability: Engineered to withstand thermal stress near the evaporator coil without warping or cracking

this model provides exact mechanical specs for a seamless drop-in installation

Can this part be used if my unit originally had a 8402-048

Common Questions: Is the 4074EJQ cross-compatible with the 4074EJQ/U

Lochinvar & A.O. Smith 100277940 Board 322838-754 including HC39VL236The Lochinvar & A. O. Smith 100277940 Board is a critical low voltage connection board engineered for precision signaling in high efficiency heating systems. Specifically designed for the Knight KH055 285 fire tube boilers, this OEM replacement part serves as the central communication interface between the main controller and auxiliary system components. As a veteran technician knows, maintaining signal integrity in commercial water heating