BAS-SVX084A-EN 17
Wiring Installation
Wiring Best Practices
To ensure proper network communication, follow the recommended wiring and best practices
below when installing communication wire:
• All wiring must comply with the National Electrical Code™ (NEC) and local codes.
• Ensure that 24 Vac power supplies are consistent in regards to grounding. Avoid sharing 24 Vac
between controllers.
• Avoid over tightening cable ties and other forms of cable wraps. This can damage the wires
inside the cable.
• Do not run communication cable alongside or in the same conduit as 24 Vac power. This
includes the conductors running from TRIAC-type inputs.
• In open plenums, avoid running wire near lighting ballasts, especially those using 277 Vac.
• Use same communication wire type, without terminators, for the zone sensor communication
stubs from the Symbio 210 controller IMC terminals to the zone sensor communication module.
• Zone Sensor communication wiring length limits of 300 ft. (100 m).
Note: For more details, refer to the BACnet Best Practices and Troubleshooting Guide
(BAS-SVX51-EN).
Figure 4. BACnet MS/TP link wiring
+
24
V
TBT
1
IM
C
0
1
2
3
4
5
6
7
8
9
x1
0
1
2
3
4
5
6
7
8
9
x10
0
1
2
3
4
5
6
7
8
9
x100
ADDRESS
ACT
LINK
2
1
RX
TX
IM
C
L3
L2
L1
STATU S
SC
+
Tracer
®
LINK 3LINK 2LINK 1
LINK 3LINK 2LINK 1
CONTROLLER
GROUND
ADDRESS
0
1
2
3
4
5
6
7
8
9
x1
0
1
2
3
4
5
6
7
8
9
x10
0
1
2
3
4
5
6
7
8
9
x100
AO
2/BI3
AO
1/BI2
ACTUATOR
BO
3
24
VAC
BO
2
24
VAC
BO
1
24
VAC
OUT
24
VAC
XFMR
RX
TX
LINK
RX
TX
SERVICE TOOL
+
24
VDC
IMC
STATU S
SERVI
C
E
UI
2
UI
1
BI1
AI
3
DAT
AI
2
SET
AI1
ZONE
210
Symbio
™
CONTROLLER
GROUND
ADDRESS
0
1
2
3
4
5
6
7
8
9
x1
0
1
2
3
4
5
6
7
8
9
x10
0
1
2
3
4
5
6
7
8
9
x100
AO
2/BI3
AO
1/BI2
ACTUATOR
BO
3
24
VAC
BO
2
24
VAC
BO
1
24
VAC
OUT
24
VAC
XFMR
RX
TX
LINK
RX
TX
SERVICE TOOL
+
24
VDC
IMC
STATU S
SERVI
C
E
UI
2
UI
1
BI1
AI
3
DAT
AI
2
SET
AI1
ZONE
210
Symbio
™
Symbio 210
Trane BACnet
Terminator
Symbio 210
Tracer SC+
Trane BACnet
Terminator
+
24
V
TBT
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