Installation
RT-SVX21AC-EN 39
Field Installed Power Wiring
An overall dimensional layout for the field installed wiring
entrance into the unit is illustrated in the Dimensions and
Weights chapter. To insure that the unit’s supply power
wiring is properly sized and installed, follow the following
guidelines.
Verify that the power supply a
vailable is com
patible with
the unit’s nameplate ratings. The available supply power
must be within 10% of the rated voltage stamped on the
nameplate. Use only copper conductors to connect the
power supply to the unit.
Important: If the unit is not equipped with an optional
factory installed non-fused disconnect
switch or circuit breaker, a field supplied
disconnect switch must be installed at or
near the unit in accordance with the
National Electrical Code (NEC latest
edition).
Main Unit Power
Standard Wiring
1. Location of the applicable electrical service entrance is
illustrated in the Dimensions and Weights chapter.
Complete the 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.
Optional TBUE Wiring (Through-the-Base
Electrical Option)
1. Location of the applicable electrical service is
illustrated below. Refer to the customer connection
diagram that is shipped with the unit for specific
termination points. The termination points, depending
on the customer option selected would be a factory
mounted non-fused disconnect switch (UDC) or circuit
breaker (UCB). If neither a factory mounted non-fused
disconnect switch (UDC) or circuit breaker (UCB) was
factory mounted, field wiring connections should be
terminated in the control box at Compressor Contactor
# 1 (CC1).
2. Provide proper grounding for the unit in accordance
with
local and national codes.
Notes:
• Black Gasket is shipped from the fa
ctor
y and is located
in the literature ship-with bag in the control box. Apply
Black Gasket around conduit plate on all 4 sides after
installation to prevent air leakage from the building
entering the electrical enclosures.
• Seal between wiring and conduit with Black Gasket or
weather proof sealer to prevent air leakage from the
building entering the electrical enclosures. Also seal
around conduit and wiring at all roof and curb
penetrations.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as unit terminals are not designed
to accept other types of conductors.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
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.
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