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Page 17
Step 6: Connect signal cable
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
•
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 specifications of the fuse
are printed on the circuit board, such as:
T3.15A/250VAC, T5A/250VAC, etc.
1.
Prepare the cable for connection:
a.
Using wire strippers, strip the rubber jacket
from both ends of signal cable to reveal
about 40mm (1.5 in) of the wires inside.
b.
Strip the insulation from the ends of the
wires.
c.
Using a wire crimper, crimp u-type lugs on
the ends of the wires, if needed.
PAY ATTENTION TO MAKE GOOD CONTACT
While crimping wires, make sure to make good
electrical contact between the wire and terminal
2. O
pen the 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.
5.
Facing the back of the unit, remove the plastic
panel on the bottom left-hand side.
Fig. 3.9
Indoor Unit
Installation
The Wiring Diagram is located
on the inside of the indoor unit’s
front panel or under this cover.
North America
Appliance Amps (A)
AWG
10 18
13 16
15 14
20 12
30 10
ALL WIRING MUST PERFORMED STRICTLY
IN ACCORDANCE WITH THE WIRING
DIAGRAM LOCATED ON THE INSIDE OF THE
INDOOR UNIT’S FRONT PANEL OR UNDER COVER.
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