BTU International BLS-FCU-29 Furnace Control Unit is a dedicated control module from BTU used to regulate furnace operations in BTU’s thermal processing equipment. In manufacturer catalogs it is listed as 5013043 BLS FCU-29, identifying it as a BTU furnace control unit. Market listings sometimes show this model with revision identifiers such as 4165 Rev R, reflecting updates to this FCU-29 hardware. This FCU-29 unit is designed for BTU furnaces and ovens within the company’s industrial thermal processing systems.
