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. Peer-to-peer communication across controllers is possible even when a building automation system is not present.You do not need to observe polarity for Comm5 communication links.

The controller provides six 0.25-inch quick-connect terminals for the Comm5 communication link connections, as follows:

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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Trane LO manual Communications, Zone sensor wiring connections TB1 Description

LO specifications

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