Table of Contents
Advertisement
Field Installed Power Wiring
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.
An overall dimensional layout for the field installed wiring
entrance into the unit is illustrated in the Dimensions and
Weights chapter. See the following guidelines to confirm
the unit supply power wiring is properly sized and installed.
Verify the power supply available is compatible with unit
nameplate ratings. The available supply power must be
within 10 percent of the rated voltage stamped on the
nameplate. Use only copper conductors to connect the
power supply to the 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.
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
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.
RT-SVX075C-EN
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.
Standard Wiring
1. Location of the applicable electrical service entrance is
illustrated in the Dimensions and Weights chapter.
Complete the unit power wiring connections at HTB1
main power terminal block in unit control panel. Refer to
the customer connection diagram 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)
•
Location of the applicable electrical service is illustrated
below. Refer to the customer connection diagram
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 main panel power terminal block (HTB1).
•
Provide proper grounding for the unit in accordance
with local and national codes.
Notes:
•
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 four sides after installation to
prevent air leakage from the building entering
the electrical enclosures.
•
Seal any unused unit penetrations and around
conduit and wiring at all unit and curb
penetrations.
Installation
43
Advertisement
Table of Contents
