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

Durability: Built to withstand the high-cycle demands of modern HX condensing systems and variable-speed blowers

or soot buildup on the secondary heat exchanger restricting airflow

Exact OEM Compatibility: Eliminates the gaps and bypass issues often found with generic "cut-to-fit" foam or mesh alternatives

Engineered for two-stage heating systems

Trane BRD4570 Control Board 320788-702 Safety Integrated: Includes internal thermalThe 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