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5.10.3 Wiring layout
The wiring layout comprises the power cords and communication wiring between the indoor and outdoor units. These include
the earth wires, and the shielded layer of the earth wires of the communication wiring. See below the wiring layout of outdoor
unit.
Tie
wrap
Tie wrap
Communication
Power cord
wiring
CAUTION
Power cords and communication wiring must
be laid out separately, they cannot be placed
in the same conduit. Use a power supply
conduit to isolate if the current of the power
supply is less than 10 A. If the current is
greater than 10 A but less than 50 A, the
spacing must exceed 50 mm at all times.
Otherwise, it may lead to electromagnetic
interference.
Arrange the refrigerant piping, power cords
and communication wiring in parallel, but do
not tie the communication wiring together
with the refrigerant piping or power cords.
Power cords and communication wiring
should not come in contact with the internal
piping so as to prevent the high temperature
piping from damaging the wires.
5.10.3 Connecting the power cord
CAUTION
Do not connect the power supply to the
communication terminal block. Otherwise,
the whole system may fail.
Turn off the power supply first.
Connect the earth wires , earth wires must
use yellow-green wire.
Earth wires are recommended to perform
curling.
Do tighten the terminal with an appropriate
screwdriver. Screwdrivers that are too small
may damage the terminal head, and cannot
tighten it.
X Y E P Q E
Controller
Communication terminal
Power supply terminal
Communication cable hole
CAUTION
The power supply cable diameter must
comply with the specified specification.
The power supply cable must be clamped to
prevent external force being applied to the
terminal.
1. Use round-type terminals of the correct specifications
to connect the power cable.
WARNING
Use rubber cable grommets to knockout
holes to avoid
power supply cable and
communication wiring being worn.
PQE
IDU Comm.
Power cable hole
Fig. 5.42
Fig 5.43
V.1
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