Installation
OAU-SVX005C-EN 21
Main Unit Power
Standard Wiring
The electrical service must be protected from over current
and short circuit conditions in accordance with NEC
requirements. Protection devices must be sized according
to the electrical data on the nameplate.
1. Location of the electrical service entrance is illustrated
in Figure 11. Complete the unit’s power wiring
connections onto either; the main terminal block HTB1
inside the unit control panel, the factory mounted non-
fused disconnect switch (UCD) or circuit breaker (UCB),
or the electric heat non-fused disconnect switch. Refer
to the customer connection diagram that shipped with
the unit for specific termination points.
2. Provide proper grounding for the unit in accordance
with local and national codes.
Use the following checklist in conjunction with the
checklist in “General Unit Requirements,” p. 18 to ensure
that the unit is properly installed and ready for operation.
Voltage Imbalance
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.
AVERTISSEMENT
Risque d’électrocution!
Le non-respect de cette consigne peut entraîner des
blessures graves, voire mortelles. Avant toute
intervention, coupez l’alimentation électrique, y
compris aux sectionneurs à distance. Suivez
scrupuleusement les procédures de verrouillage/mise
hors service préconisées pour empêcher tout
rétablissement accidentel de l’alimentation électrique.
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.
AVERTISSEMENT
Câblage sur site et mise à la terre corrects
nécessaires!
Le non-respect de la réglementation peut entraîner des
blessures graves, voire mortelles. Il est IMPÉRATIF de
confier l’ensemble du câblage sur site à un électricien
qualifié. Un câblage sur site mal installé ou mal mis à la
terre constitue des risques D’INCENDIE et
D’ÉLECTROCUTION. Pour éviter ces risques, il est
IMPÉRATIF de respecter les obligations en matière de
pose de câblage sur site et de mise à la terre tel que
stipulé dans les règles du NEC et dans les
réglementations électriques locales/nationales.
Verify that the correct size and number of filters are in
place.
Inspect the interior of the unit for tools and debris and
install all panels in preparation for starting the unit.
Check all electrical connections for tightness and
“point of termination” accuracy.
Verify condenser airflow is unobstructed.
Verify that the condenser and indoor fans turn freely
without rubbing and are properly tightened on the
shafts.
Check motor mounting bolts and inlet cone for
tightness. Free spin wheel by hand to check for proper
alignment of motor, wheel, and inlet cone. Record
motor nameplate amps at unit-rated voltage.
Check proper indoor fan wheel rotation. Wheel
housing will be marked to indicate direction of proper
rotation.
With access doors closed and secured, operate
blower at 100 percent speed. Check amp readout of
amps output to indoor fan at VFD display to confirm
operation within motor amp capacity.
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been properly
trained in handling live electrical components perform
these tasks.
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