Trane BRD4570 Control Board 320819-301 (Water Column) set point

(Water Column) set point

replacing the HVAC start capacitor with this high-capacitance unit ensures the compressor reaches operating speed quickly

the switch interrupts the burner circuit to prevent equipment damage and potential safety hazards

while the 21V51U-843 is formulated for ECM variable-speed motors

or the control board displaying three flashes for a "failed open" switch

Trane BRD4570 Control Board 320819-301 (Water Column) set pointThe 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