Wire Ac Power; Ccp Field Wiring - Trane VariTrac VAV-SVN03A-EN Installation Manual

VAV-SVN03A-EN

Wire AC Power

CCP Field Wiring

Field wiring to the VariTrac Central Control Panel includes:
• AC power wiring
• binary input wiring
• communication link wiring
• binary output wiring (requires optional relay board)
These procedures are detailed in the following sections. Refer to Figure 6 for
wiring connections.
Figure 6: Field Wiring
Line voltage
24 Vac
Comm4 UCM Comm4 UCM
+ + +
Comm4
link
- - -
Tracker Comm5 UCM
A A A
Comm5
link
B B B
Legend
=
Transformer
=
Figure note
= Termination resistor
Twisted pair, shielded wire
=
per Trane specifications
=
Shield termination
=
Contact points
= Earth ground
= Shield ground
Termination Board TB2
1
2
3
4
5
6
7
8
9
10
+
Comm4
link
11
-
Splice
12
13
A
Comm5
link
14
B
Splice
15
Figure Notes
1 All customer wiring must be in acordance with
national, state, and local electrical codes.
2 Trane recommends a dedicated transformer
for 24 Vac power.
3 Do not apply voltage to the priority shutdown
and occupancy inputs.
4 Example of Comm5 communication link wiring.
See product-specific literature for Comm5 wire
connection details.
Wire AC Power
1
2
3
3
4
17