48
CG-SVX039C-GB
General Electrical Recommendations
Electrical Parts
When reviewing this manual keep in mind.
• All field-installed wiring must be in
accordance with local regulations, CE
directives and guidelines. Be sure to satisfy
proper equipment grounding requirements
according CE
• The following standardized values - Maximum
Amps - Short Circuit Amps - Starting Amps are
displayed on unit nameplate.
• All field-installed wiring must be checked for
proper terminations, and for possible shorts or
grounds.
Note: Always refer to wiring diagrams shipped with
chiller or unit submittal for specific electrical schematic
and connection information.
Important: To prevent control malfunctions, do not run
low voltage wiring (<30V) in conduit with conductors
carrying more than 30 volts.
WARNING! Hazardous Voltage with Capacitor!
Disconnect all electric power, including remote
disconnects and discharge all motor start/run and
AFD (Adaptive Frequency TM Drive) capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power cannot be inadvertently energized.
• For variable frequency drives or other energy
storing components provided by Trane or
others, refer to the appropriate manufacturer’s
literature for allowable waiting periods
for discharges capacitors. Verify with an
appropriate voltmeter that all capacitors have
discharged
• DC bus capacitors retain hazardous voltages
after input power has been disconnected.
Follow proper lockout/tagout procedures to
ensure the power cannot be inadvertently
energized
• After disconnecting input power, wait five (5)
minutes for units which are equipped with EC
fans and wait twenty (20) minutes for units
which are equipped with variable frequency
drive (0V DC) before touching any internal
components.
• Failure to follow these instructions could result
death or serious injury
For additional information regarding the safe discharge
of capacitors, see “Adaptive Frequency™ Drive (AFD3)
Capacitor Discharge” and BAS-SVX19B-E4.
Hazardous Voltage – Pressurized Burning Fluid!
Before removing compressor terminal box cover for
servicing, or servicing power side of control panel,
CLOSE COMPRESSOR DISCHARGE SERVICE VALVE
and disconnect all electric power including remote
disconnects. Discharge all motor start/run capacitors.
Follow lockout/tagout procedures to ensure the
power cannot be inadvertently energized. Verify with
an appropriate voltmeter that all capacitors have
discharged.
The compressor contains hot, pressurized refrigerant.
Motor terminals act as a seal against this refrigerant.
Care should be taken when servicing NOT to damage or
loosen motor terminals.
Do not operate compressor without terminal box cover
in place.
Failure to follow all electrical safety precautions could
result in death or seriously injure.
CAUTION! To avoid corrosion, overheating or general
damage, at terminal connections, unit is designed for
copper mono-conductors only. In case of multiconductor
cable, an intermediate connection box must be
added. For cable with alternative material, bi-material
connecting devices are mandatory. Cable routing inside
control panel should be made case by case by installer.
Do not allow conduit to interfere with other components,
structural members or equipment. Control voltage
(115V) wiring in conduit must be separate from conduit
carrying low voltage (<30V) wiring. To prevent control
malfunctions, do not run low voltage wiring (<30V) in
conduit with conductors carrying more than 30V.
WARNING! The Warning Label is displayed on the
equipment and shown on wiring diagrams and
schematics. Strict adherence to these warnings must be
observed. Failure to do so may result in personal injury
or death.
CAUTION! Units must not be linked to the neutral
wiring of the installation. Units are compatible with the
following neutral operating conditions:
TNS IT TNC TT
Standard Standard** Special Standard*
* Differential protection should be suited for industrial
machinery with current leak which can be higher than
500 mA (several motors and frequency drives).
** Filter RFI disconnect on VPF and EC fan.
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