Tracer
®
ZN.520
78
UNT-IOM-6
Table 29. Zone sensor wiring connections
TB1
Description
1
Space temperature
2
Common
3
Setpoint
4
Fan mode
5
Communications
6 Communications
The Tracer
®
ZN.520 controller communicates via Tranes Comm5
protocol. Typically, a communication link is applied between unit
controllers and a building automation system. Communication also is
possible via Rover, Tranes 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
Communications