Installation
28 RT-SVX23F-EN
Field Installed Power Wiring
An overall dimensional layout for the field installed wiring
entrance into the unit is illustrated in “Unit Clearances,”
p. 11.To insure that the unit’s supply power wiring is
properly sized and installed, follow the guidelines outlined
below.
Verify that the power supply available is compatible 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.
Note: If the unit is not equipped with an optional factory
installed nonfused 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 “Unit Clearances,” p. 11. 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.
Main Unit Power 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 nonfused disconnect switch (UDC) or circuit
breaker (UCB). If neither a factory mounted nonfused
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.
Note: Black Gasket is shipped from the factory 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 leak age from
the building entering the electrical enclosures.
Note: 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!
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. Failure to
follow code could result in death or serious injury.
NOTICE:
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of
conductors. Failure to use copper conductors could
result in equipment damage.
Figure 33. All units except WSC120E
Figure 34. WSC120E
CONTROL WIRING
CONDUIT
BLACK GASKET
CONTROL WIRING
CONDUIT
FIELD POWERED
CONVENIENCE OUTLET
CONDUIT
SEAL BETWEEN
WIRING AND
CONDUIT WITH
WEATHER PROOF
SEALER TO PREVENT
AIR LEAKAGE
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