Installation Electrical; General Recommendations; Power Supply Wiring; Unit Power Supply - Trane CGWF Installation Operation & Maintenance

Installation Electrical

General Recommendations

The wiring procedures described in this portion of the manual must be accomplished
to obtain proper operation of the basic CGWF/CCAF unit. Electrical wiring instructions
for all optional features and equipment are described In the "Optional Electrical
Wiring" sections of this manual.
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.
All wiring must comply with National Electric Code (NEC) and state and local
requirements. Outside the United States, the national and/or local electrical
requirements of the other countries shall apply. The installer must provide properly
sized system interconnecting and power supply wiring with appropriate branch circuit
protection. Type and locations of disconnects must comply with all applicable codes.
CAUTION
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors.
Failure to use copper conductors may result in equipment damage. All
wiring must comply with applicable local and national codes.
Electrical connection locations are shown in Figure 7 - Figure 11. Minimum circuit
ampacities, recommended fuse sizes and other unit electrical data are provided in
Table 10 and Table 11, and on the unit nameplate. Refer to the "Field Wiring and
Remote Sensor Layout Schematic" shown in the Unit Wiring section.

Power Supply Wiring

Unit Power Supply

The installer must connect appropriate line power supply (with fused disconnects) to
the terminal block or non-fused, unit mounted disconnect in the power section of the
unit control panel. Refer to Figure 2 and Figure 3. Field wiring diagrams, electrical
schematics and component location drawings are also attached to the inside of the
control panel door.
The unit power fused disconnect switch(es) should be located in the general area of
the unit to comply with NEC or local codes. The unit disconnect can be used as an
emergency shutdown device.
Normally, manual shutdown of the unit is accomplished at the DynaView. Then, open
the line power and control power (if used) fused disconnects after the pumpdown
cycle is complete.

Equipment Grounds

Provide proper grounding at the connection points provided in the panel (Figure 22).

Terminal Lugs, Circuit Breakers and Non-Fused Disconnect Switches

Proper starter/control panel line-side lug sizes are specified on the starter submittals
and in Table 9. These lug sizes must be compatible with conductor sizes specified by
the electrical engineer or contractor.
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