Trane Precedent THC036E, Installation And Maintenance Manual

Page: 30 / 64

Installation
30 RT-SVX22J-EN
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
Location of the applicable electrical service entrance is
illustrated in
“Unit Dimensions,” p. 12 . 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
Provide proper grounding for the unit in accordance with
local and national codes.
Optional TBUE Wiring (Through the Base
Electrical Option)
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).
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 leakage 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.
Field Installed Control Wiring
An overall layout of the various control options available
with the required number of conductors for each control
device is illustrated in
Figure 52, p. 38 .
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.
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.
Figure 36. All units except 8½-10 ton high efficiency, and
7½ ton high efficiency with hot gas reheat
dehumidification.
Figure 37. 8½-10 ton high efficiency, and 7½ ton high
efficiency with hot gas reheat
dehumidification.
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