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Key Benefits Direct Trane OEM replacement ensures exact electrical and physical fitment for FAN3049 and FAN03049 models
ensuring stable environmental control in direct-fired equipment
Integrated Freeze Protection: Built-in frost setting prevents pipe bursts in unoccupied spaces during extreme weather
preventing expensive mechanical failures due to temperature-related oil breakdown
Lochinvar & A.O. Smith 100208468 Control 321894-709 Key Benefits Direct Trane OEMThe Lochinvar & A. O. Smith 100208468 User Interface Control is a critical OEM replacement part engineered for precise management of commercial boiler and water heater systems. Designed to replace legacy part numbers RLY20031, RLY20031K, and 100167553, this control board serves as the primary communication hub between the technician and the appliance's internal logic. It is specifically calibrated for the Copper Fin II series, including models CF 402