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Page 16
BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS
1.
All wiring must comply with local and national electrical codes, 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. Insufcient power supply can
cause malfunction, electrical shock, or re.
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
qualied 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.
WARNING
BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER
TO THE SYSTEM.
Page 17
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
Other Regions
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.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is
designed with a fuse to provide overcurrent
protection. The specications of the fuse
1.
Prepare the cable for connection:
a.
Using wire strippers, strip the rubber jacket
from both ends of signal cable to reveal
about 40mm (1.57in) of the wires inside.
b.
Strip the insulation from the ends of the
wires.
c.
Using wire crimper, crimp u-type lugs on
the ends of the wires.
PAY ATTENTION TO LIVE WIRE
While crimping wires, make sure you clearly
distinguish the Live (“L”) Wire from other wires.
2. O
pen front panel of the indoor unit.
3.
Using a screwdriver, open the wire box cover
on the right side of the unit. This will reveal
the terminal block.
Terminal block
Wire cover
Screw
Cable clamp
WARNING
4.
Unscrew the cable clamp below the terminal
block and place it to the side.
Fig. 3.9
The Wiring Diagram is located
on the inside of the indoor unit’s
wire cover.
North America
Appliance Amps (A) AWG
10 18
13 16
18 14
25 12
30 10
ALL WIRING MUST PERFORMED STRICTLY
IN ACCORDANCE WITH THE WIRING
DIAGRAM LOCATED ON THE INSIDE OF THE
INDOOR UNIT S WIRE COVER.
are printed on the circuit board, such as:
Indoor unit: T5A/250VAC
Outdoor unit(applicalbe to units adpot
R32 or R290 refrigerant only):
T20A/250VAC(<=18000Btu/h units)
T30A/250VAC(>18000Btu/h units)
NOTE: The fuse is made of ceramic.
17


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