SKU: 92821860992
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dial inserts for multiple configurations (including -400 and -404)
it utilizes a 2-10VDC control signal to deliver precise proportional positioning
or the control board displaying three flashes for a "failed open" switch
while the 21V51U-843 is formulated for ECM variable-speed motors
the switch interrupts the burner circuit to prevent equipment damage and potential safety hazards
Trane BRD4570 Control Board 320819-301 dial inserts for multiple configurationsThe 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