Page 17
Indoor Unit
Installation
Step 6: Connect the 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.
Minimum Cross-Sectional Area of
Power and Signal Cables
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 specifications 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
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, then open the
termianl block cover. This will reveal the
terminal block.
Wire cover
Screw
Terminal block
cover
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.
ALL WIRING MUST BE PERFORMED STRICTLY
IN ACCORDANCE WITH THE WIRING
DIAGRAM LOCATED ON THE INSIDE OF THE
INDOOR UNIT S WIRE COVER.
’
about 40mm of the wires inside.
are printed on the circuit board, such as:
Indoor unit: T5A/250VAC
Outdoor unit(applicalbe to units adpot
R32, T20A/250VAC(<=18000Btu/h
units)T30A/250VAC(>18000Btu/h units)
NOTE: The fuse is made of ceramic.
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