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11.14.8 ELECTRICAL WIRING
The units must be connected to the supply cables for fixed wiring by qualified technician.
Feed the power source to the unit via a distribution switch board designed for this purpose, the
switch should disconnected all poles with a contact separation of at least 3 mm.
When the supply cable is damaged, it must be replaced by qualified technician.
Be sure to install a current leakage breaker, main switch and fuse to the main power supply,
otherwise electric shocks may result.
Be sure to connect the unit to secure earth connection.
If the earthing work is not carried out properly, electric shocks may result.
Warning
Wiring shall be connected securely by using specified cables and fix them securely so that external
force of the cables may not transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
• Ensure to connect the electrical cable connections and clamp the wires securely to the terminal connections
using cord clamps so that no undue force is placed on the wires (power source cable, indoor/outdoor connection
cables, earth lead wire).
• Do not install a phase advance capacitor for power factor improvement. (It does not improve the power factor and
will cause abnormal overheating.)
• Do not bind the excess cables together and place them inside this unit.
• Protect the electrical cable with the protective bushing provided so that the cables do no get damaged on the
knock hole or etched portions. If there is space between the electrical cables and the protective bushing occurs,
seal it accordingly.
• Tie the cables with the provided binding strap so that they do not touch the compressor and the pipes.
• When setting up the cables, inside of unit install properly so that the front panel will not lift up. Make sure that
front panel mount correctly.
• Use a round type terminal with an insulation
sleeve for connecting to the terminal block.
• Use the appropriate screwdriver for tightening the
terminal screws.
Small sized screwdriver damages the head of the
screw and cannot tighten it properly.
• There is risk of damaging the screw if the terminal
screw is over tightened. Tighten with the
appropriate torque.
Screw diameter name Tightening torque N•cm (kgf•cm)
M4 157 ~ 196 (16 ~ 20)
M5 196 ~ 245 (20 ~ 25)
• Direction to pull out wires
Back direction
Sideways direction
Front direction
Insulate the
terminal section with
insulation sleeves.
Cord clamp
Cord clamp
Control
terminal block
Power supply
terminal block
Earth lead wire
Tying band
(Standard
accessories)
Firmly secure the power supply
cable, the internal/external
connections and earth wire.
Tie the insulation pipes so that the
power supply cable, control wires,
and earth lead wire do not come into
contact with the compressor and/or
the exposed pipes.
• Earth lead wire set up
The earth lead wire shall be longer than other lead wires as shown in the figure for electrical
safety in case it slips out of the cord from the anchorage.
• Be sure to connect the wires correctly to terminal
board with connecting the crimp type ring terminal to
the wires.
• If connecting two separate wires to a single crimped
terminal, place the two crimped terminal wires
together as shown in Fig. A. (If the arrangement
shown in Fig. B is used, poor contacts or
contact damage may result.)
Fig. A (OK) Fig. B (not OK)
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