or soot buildup on the secondary heat exchanger restricting airflow

Key Benefits: Direct OEM Compatibility: Engineered specifically for Lochinvar Crest FB 4000 and FBN4000 series to ensure plug-and-play installation without harness splicing

making it a versatile component for your service van inventory

Safety Integrated: Includes internal thermal protection to prevent winding failure during abnormal operating conditions or voltage fluctuations

Trane BRD4570 Control Board 320788-702 or soot buildup on theThe Trane BRD4570 is a high performance Tracer VV550 VAV controller designed specifically for precision air distribution and multi zone climate management. Engineered to replace legacy Tracer VV550 units, this direct replacement VAV board ensures seamless integration with Trane building automation systems using the LonTalk communication protocol. Operating on standard 24VAC power input, the Trane BRD4570 HVAC control board manages dampt actuator