Owner’s Manual - CMA12-48SD
8
UNIT WIRING
ELECTRICAL WIRING
AND SUPPLY VOLTAGE:
All electrical wiring must be done according to
NEC and local codes. Nameplate data indicates
the operating voltage, phase, ampacity
, maximum
over current protection, and minimum voltage.
The contractor is to provide an individual branch
circuit for over current protection for the unit as
required by code. Run power supply wiring through
a weatherproof disconnect box and conduit to the
unit connection. Disconnects are required to be
within sight and easy reach of the unit (usually
within 3 feet).
Check the unit wiring diagram for the number of
conductors required. Route neatly and protect from
sharp edges and damage.
Inadequate wiring and/or improper electrical
supply will likely result in failure of the compressor
and other electrical components and voids the
warranty
.
NOTE:
The supply voltage must be consistent
with the rated voltage of the air conditioner, not
to exceed +/- 10%. Ensure the unit is properly
grounded.
CAUTION
Incorrect wiring connections may cause
electrical parts to malfunction. All wiring must
comply with local and national electrical
codes and be installed by qualied and skilled
electricians.
Outdoor unit wiring connection
1. Remove the electrical control cover from the
outdoor unit.
2. Connect the cables to the terminals as
identied with their respective designated
terminal spaces on the terminal block of indoor
and outdoor units. 600V THHN 14 AWG/4
conductor unshielded stranded copper cable
is recommended, however NEC/local codes
prevail.
3. To prevent the entrance of water into outdoor
unit, form a loop in the cable [See Fig. 6].
4. Insulate any unused conductors with PCV/
Electrical tape, so that they do not touch any
other exposed electrical or metal parts.
10
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