30
RTAC-SVX005A-EN
Figure 30. Single point configuration
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
NOTICE
Evaporator Damage!
Failure to follow these instructions could result in
catastrophic damage to the evaporator.
At ambient temperatures below 40°F, unit must be
winterized or 460V power applied. Shore power does
not energize evaporator heat trace.
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
other countries shall apply. The installer must provide
properly sized system interconnecting and power supply
wiring with appropriate fused disconnect switches. Type
and locations of disconnects must comply with all
applicable codes.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not
designed or qualified to accept other types of
conductors.
Shore Point Power (115 Vac)
Each RTAC Trane Rental Services unit comes with a shore
power enclosure. Shore power is provided for the purpose
of energizing the oil heaters, oil separators, RTAC controls,
and the RTAC controls interface. The shore power circuit is
powered by a 115 Volt 60 Hz 15 Amp circuit. Power is
supplied from the building to the shore power enclosure
with an extension cord. RTAC 155 to 250 ton units have
one shore power enclosure. RTAC 300 to 500 ton units
have two shore power enclosures.
Note: The RTAC 300, 400, and 500 ton units have two
circuits. Shore power enclosures must be supplied
with 115 Volt, 60 Hz power. See “Unit Assembly
Dimensions and Weights,” p. 8 for 300 to 500 ton
units.
Note: F2-F4 shore power enclosures include door switches
for safety.
The shore power enclosure powers the following
components:
• Shore power plug (115 Vac), circuit 1
– Compressor heaters
– Oil separator heater
– CH530 interface
– CH530 controls
• Shore power plug (115 Vac), circuit 2 (300-500 only)
– Compressor heaters
– Oil separator heater
– CH530 controls
Note: Energizing circuit 1 shore power prior to circuit 2
shore power will result in a nuisance communication
loss diagnostic on the control panel.
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and
on the tags, stickers, and labels, as well as the
following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing devices
such as capacitors before servicing. Follow proper
lockout/tagout procedures to ensure the power can
not be inadvertently energized. When necessary to
work with live electrical components, have a qualified
licensed electrician or other individual who has been
trained in handling live electrical components perform
these tasks.
Refer to unit schematics to check the number of
disconnects required to de-energize the unit. When
electrically troubleshooting the compressor make sure
electrical power is NOT applied. Inspect all wiring
connections. Electrical connections should be clean and
tight.
Installation - Electrical
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