Main Unit Power - Trane TSC060ED Installation, Operation And Maintenance Manual

installed at or near the unit in accordance with the
National Electrical Code (NEC latest edition).

Main Unit Power

WARNING
Proper Field Wiring and Grounding
Required!
• All field-installed wiring must be completed by
qualified personnel. All field-installed wiring must
comply with NEC and applicable local codes.
• Follow proper local and state electrical code on
requirements for grounding.
Failure to follow this instructions could result in death
or serious injuries.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
Standard Wiring
1. Location of the applicable electrical service entrance is
illustrated in "Unit Dimensions, " p.
unit's power wiring connections at Compressor
Contactor # 1 (CC1) inside the unit control panel. Refer
to the customer connection diagram that is shipped
with the unit for specific termination points.
2. Provide proper grounding for the unit in accordance
with local and national codes.
Figure 24. All units
RT-SVX37B-EN
Field Installed Control Wiring
An overall layout of the various control options available
with the required number of conductors for each control
device is illustrated in
Control Power Transformer
The 24 volt control power transformers are to be used only
with the accessories called out in this manual.
Transformers rated greater than 50 VA are equipped with
internal circuit breakers. If a circuit breaker trips, turn "Off"
all power to the unit before attempting to reset it.
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
The transformer is located in the control panel. The circuit
breaker is located on the left side of the transformer and
can be reset by pressing in on the black reset button.
Controls using 24 VAC
Before installing any connecting wiring, refer to
Dimensions, " p. 11
provided on the unit and
guidelines, and;
11. Complete the
1. Use copper conductors unless otherwise specified.
2. Ensure that the AC control wiring between the controls
Note: Resistance in excess of 3 ohms per conductor may
Note: Be sure to check all loads and conductors for
3. Do not run the AC low voltage wiring in the same
4. Route low voltage wiring per
Table 3.
Distance from Unit
000 - 460 feet
000 - 140 m
461 - 732 feet
141 - 223 m
733 - 1000 feet
224 - 305 m
Figure 29, p.
WARNING
for the electrical access locations
Table 3
and the unit's termination point does not exceed three
(3) ohms/conductor for the length of the run.
cause component failure due to insufficient AC
voltage supply.
grounds, shorts, and mis-wiring.
conduit with the high voltage power wiring.
Electromechanical thermostat 24V AC
conductors with ReliaTel
Recommended
to Control Wire Size
18 gauge
.75 mm2
16 gauge
1.3 mm2
14 gauge
2.0 mm2
Installation
27.
"Unit
for AC conductor sizing
Figure 26, p. 24.
23