BEFORE PERFORMING ANY 
ELECTRICAL WORK, READ 
THESE REGULATIONS
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 immediately. 
Explain your reasoning to the client, 
and refuse to install the unit until the 
safety issue is properly resolved.
4.  Power voltage should be within 90-
110% of rated voltage. Insufcient 
power supply can cause malfunction, 
electrical shock, or re.
5.  5. If connecting power to xed wiring, 
install a surge protector and main power 
switch with a capacity of 1.5 times the 
maximum current of the unit.
6.  If connecting power to xed wiring, 
a switch or circuit breaker that 
disconnects all poles and has a contact 
separation of at least 1/8in (3mm) must 
be incorporated in the xed wiring. 
The qualied technician must use an 
approved circuit breaker or switch.
7.  Only connect the unit to an individual 
branch circuit outlet. Do not connect 
another appliance to that outlet.
8.  Make sure to properly ground the air 
conditioner.
9.  Every wire must be rmly connected. 
Loose wiring can cause the terminal 
to overheat, resulting in product 
malfunction and possible re. 
10. Do not let wires touch or rest against 
refrigerant tubing, the compressor, or 
any moving parts within the unit.
11. If the unit has an auxiliary electric 
heater, it must be installed at least 1 
meter (40in) away from any combustible 
materials.
12. To avoid getting an electric shock, 
never touch the electrical components 
soon after the power supply has been 
turned off. After turning off the power, 
always wait 10 minutes or more before 
you touch the electrical components.
WARNING
BEFORE PERFORMING ANY 
ELECTRICAL OR WIRING WORK, 
TURN OFF THE MAIN POWER TO 
THE SYSTEM.
Step 6: Connect signal cable
The signal cable enables communication 
between the indoor and outdoor units. You 
must rst choose the right cable size before 
preparing it for connection.
Cable Types
 ● Indoor Power Cable (if applicable): 
H05VV-F or H05V2V2-F
 ● Outdoor Power Cable: H07RN-F
 ● Signal Cable: H07RN-F
Minimum Cross-Sectional Area of Power 
and Signal Cables (For reference)
Rated Current 
of Appliance (A)
Nominal Cross-Sectional 
Area (mm²)
> 3 and ≤ 6 0.75
> 6 and ≤ 10 1
> 10 and ≤ 16 1.5
> 16 and ≤ 25 2.5
> 25 and ≤ 32 4
> 32 and ≤ 40 6
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.
WARNING
ALL WIRING MUST BE PERFORMED 
STRICTLY IN ACCORDANCE WITH 
THE WIRING DIAGRAM LOCATED ON 
THE BACK OF THE INDOOR UNITʼS 
FRONT PANEL.
Indoor Unit 
Installation
 Page 08-GB