Installation - Electrical - Trane VUV Installation, Operation And Maintenance Manual

Installation - Electrical

Table 15. Motor quantity and horsepower
0750 1000
1 - 1/4 1 - 1/4
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/national 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. Verify that
no power is present with a voltmeter.
NOTICE
Equipment Damage!
Failure to follow Instructions above could result in
premature motor failures or equipment damage. Wiring
diagrams provided in this manual are for reference
only. Actual wiring for particular options/units could
vary. Refer to the diagram provided on the equipment
for specific information.
Do not remove or alter the wiring of the time delay relay
(DL). Failure to do so could result in equipment failure.
WARNING
Fire Hazard!
Failure to follow instructions below could cause a fire
which could result in death or serious injury, and
property damage.
DO NOT jumper factory wiring! Mis-wiring of safety
circuits could cause a fire. For all wiring connections,
refer to the wiring diagram shipped with the unit.
Should any original wire supplied with the unit have to
be replaced, it MUST be replaced with wiring material
having a temperature rating of at least 221°F (105°C).
UV-SVX005G-EN
Unit size
1250 1500
2 - 1/4 2 - 1/4
Control Power:
Unit ventilator controls and control wiring
can be factory mounted or field installed.
Wiring diagrams illustrate the standard unit motors with one or
more speed controls. Terminal wiring is provided by Trane and
the actual components used for a particular installation may
differ. Control and line diagrams for the exact control system
used are provided with each unit.
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.
Electrical Wiring
Unit Wiring Diagrams:
based on unit options ordered, are provided inside each unit
and can be easily removed for reference. Use these diagrams
for connections or trouble analysis. Wiring diagrams are
attached on the inside of the front panel of the unit.
Supply Power Wiring:
obtain the minimum circuit ampacity (MCA) and maximum fuse
size (MFS) or maximum circuit breaker (MCB) to properly size
field supply wiring and fuses or circuit breakers. Refer to the
unit operating voltage listed on the unit wiring schematic,
submittal, or nameplate. Reference the wiring schematic for
specific wiring connections.
Note: All field wiring should conform to NEC and all
applicable state and local code requirements. The
control panel box is always on the end opposite the
piping connections. Access the control box by
removing the two screws that secure the front cover.
This will allow the panel to be removed, to provide
access to the electrical components.
If the unit does not have a disconnect switch, the power leads
and capped ground wire are inside the control panel. If the unit
has a disconnect switch, the power leads are wired to the
junction box switch on the control panel. Pull the capped
ground wire into the junction box.
Electrical Grounding Restrictions:
input circuits are normally at or near ground (common)
potential. When wiring sensors and other input devices to the
Tracer® controller, avoid creating ground loops with grounded
conductors external to the unit control circuit. Ground loops
can affect the measurement accuracy of the controller.
All input/output circuits (except isolated relay contacts and
optically isolated inputs) assume a grounded source, either a
ground wire at the supply transformer to control panel chassis,
or an installer supplied ground.
Specific unit wiring diagrams,
Refer to the unit nameplate to
All sensor and
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