54
CDHF-SVX01N-EN
Customer-supplied Remote Starter Wiring
This information is applicable to Starter 1 for
Compressor 1 as well as Starter 2 for Compressor 2.
(For wire estimation purposes, double check the
following table as there are two starters to be wired.)
Table 16.
Standard customer-supplied remote field wiring requirements
Power Supply Wiring to Starter Panel
Starter Panel Terminals
Starter by Others 3-phase Power Wiring
See Starter by Others
Schematic
Starter to Motor Power Wiring
Starters
Motor
Remote Starter to Chiller Motor Junction Box
T1 through T6 Terminals
T1 through T6
Terminals
Starter to Control Panel 120 Vac Control
Wiring
Starter Panel Terminals
Unit Control Panel
Terminations
Max Terminal Wire
Size (AWG)
(a)
Minimum Circuit
Ampacity
120 Vac Power Supply (from Starter to
Control Panel)
See Starter by Others
Schematic 5X1-1, 5X1-2, 5X1-
20 (Ground)
1X1-1, 1X1-12, 1X1-18
(Ground)
8
40
Power from Control Panel 1Q1
5X1-3
1X1-3, 1A23-J6-3
14
20
Interlock Relay Signal
5X1-4
1A23-J10-1
14
20
Start Contactor Signal
5X1-5
1A23-J8-1
14
20
Oil Pump Interlock
5X1-7, 5X1-8
1A7-J2-4, 1A7-J2-2
14
20
Run Contactor Signal
5X1-10
1A23-J6-12
14
20
Transition Complete
5X1-14
1A23-J12-2
14
20
Low Voltage Circuits Less than 30 Vac
Starter Panel Terminals
Unit Control Panel
Terminations
Standard Circuits
Current Transformers (refer to table in
“Current Transformer and Potential
Transformer Wire Sizing,” p. 54
) (Required)
(b)
5CT4-white, black
5CT5-white, black
5CT6-white, black
1A23-J7-1,2
1A23-J7-3,4
1A23-J7-5,6
Note:
Phasing must
be maintained.
Potential Transformers (Required)
5T17-236,237
5T18-238,239
5T19-240,241
1A23-J5-1,2
1A23-J5-3,4
1A23-J5-5,6
Note:
Phasing must
be maintained.
Solid State Stater Fault
(c)
5X1-11
5X1-12
1A24-J2-1
1A24-J2-2
Notes:
1
.
All wiring to be in accordance with National Electrical Code (NEC) and any local codes.
2
.
Starter by Others Specification
available from your local Trane sales office.
(a)
Wires, lugs, and fuses/breakers are sized based on National Electric Code (NEC) [NFPA 70] and UL 1995.
(b)
Must be separated from 120 Vac and higher wiring.
(c)
Solid State Starter Fault input is used with low- and medium-voltage, customer-supplied solid state starters only.
Current Transformer and
Potential Transformer Wire
Sizing
For customer-supplied starter-to-chiller unit control
panel starter module 1A23; these wires must be
separated from 120 Vac or higher wiring.
Table 17.
Maximum recommended wire length for
secondary current transformer (CT) leads in
dual CT system
Wire AWG
(a)
Maximum Wire Length
Secondary CT Leads
Feet
Meters
8
1362.8
415.5
10
856.9
261.2
12
538.9
164.3
14
338.9
103.3
16
213.1
65.0
17
169.1
51.5
18
134.1
40.9
20
84.3
25.7
Notes:
1
.
Wire length is for copper conductors only.
2
.
Wire length is total one-way distance that the CT can be from
the starter module.
