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4
Electrical work preparation
WARNING
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS
●
BEFORE PERFORMING ANY ELECTRLCAL OR WIRING WORK, TURN OFF
●
THE MAIN POWER TO THE SYSTEM.
1. All wiring must comply with local and
national electrical codes, regulations
and must be installed by a licensed
electrician.
2. All electrical connections must be
made according to the Electrical
Connection Diagram located on the
panels of the indoor and outdoor units.
3. If there is a serious safety issue with
the power supply, stop work imme-
diately. Explain your reasoning to the
client, and refuse to install the unit until
the safety issue is properly resolved.
4. If connecting power to fixed wiring, a
switch or circuit breaker that disconn-
ects all poles and has a contact sepa-
ration of at least 1/8in (3mm) must be
incorporated in the fixed wiring. The
qualified technician must use an
approved circuit breaker or switch.
5. Only connect the unit to an individual
branch circuit outlet. Do not connect
another appliance to that outlet.
6. Make sure to properly ground the air
conditioner.
7. Every wire must be firmly connected.
Loose wiring can cause the terminal to
overheat, resulting in product
malfunction and possible fire.
8. Do not let wires touch or rest against
refrigerant tubing, the compressor, or
any moving parts within the unit.
9. To avoid getting an electric shock,
never touch the electrical components
soon after the power supply has been
turned o . After turning o the power,
always wait 10 minutes or more before
you touch the electrical components.
10. Power voltage should be within
90-110% of rated voltage. Insu cient
power supply can cause malfunction,
electrical shock, or fire.
WARNING
All wiring must be performed strictly in
accordance with the wiring diagram
located on the back of the Indoor Unit's
front panel.
Connect signal and power cables
The signal cable enables communication between
the indoor and outdoor units. You must first
choose the right cable size before preparing it for
connection.
Cable Types(Not applicable for North America)
• Indoor Power Cable
H05VV-F or H05V2V2-F
• Outdoor Power Cable: H07RN-F or H05RN-F
• Signal Cable: H07RN-F
Minimum Cross-Sectional Area of
Power and Signal Cables (For reference)
Rated Current of
Appliance (A)
> 3 and
≤ 6
> 6 and
≤ 10
> 10 and
≤ 16
> 16 and
≤ 25
> 25 and
≤ 32
> 32 and
≤ 40
CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal
cable, fuse, and switch needed is determined
by the maximum current of the unit. The
maximum current is indicated on the nameplate
located on the side panel of the unit. Refer to
this nameplate to choose the right cable, fuse,
or switch.
DO NOT MIX UP LIVE AND NULL WIRES
This is dangerous, and can cause the air
conditioning unit to malfunction.
16
(if applicable):
Nominal Cross-Sectional
Area (mm )
0.75
1
1.5
2.5
4
6
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