Tracer® ZN.520
Communications
Table 29. Zone sensor wiring connections
TB1 Description
1Space temperature
2Common
3Setpoint
4 Fan mode
5Communications
6 Communications
The Tracer® ZN.520 controller communicates via Trane’s Comm5 protocol. Typically, a communication link is applied between unit controllers and a building automation system. Communication also is possible via Rover, Trane’s service tool.
The controller provides six
•Two terminals for communication to the board
•Two terminals for communication from the board to the next unit (daisy chain)
•Two terminals for a connection from the zone sensor back to the controller
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