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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
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
North America
Appliance Amps (A)
10
13
18
25
30
Other Regions
Rated Current of
Appliance (A)
> 3 and ≤ 6
> 6 and ≤ 10
> 10 and ≤ 16
> 16 and ≤ 20
> 20 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.
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
AWG
18
16
14
12
10
Nominal Cross-Sectional
Area (mm²)
0.75
1
1.5
2.5
4
6
are printed on the circuit board, such as:
T5A/250VAC
Prepare the cable for connection:
1.
Using wire strippers, strip the rubber jacket
a.
from both ends of signal cable to reveal
about 40mm (1.57in) of the wires inside.
Strip the insulation from the ends of the
b.
wires.
Using wire crimper, crimp u-type lugs on
c.
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.
pen front panel of the indoor unit.
2. O
Using a screwdriver, open the wire box cover
3.
on the right side of the unit. This will reveal
the terminal block.
The Wiring Diagram is located
on the inside of the indoor unit's
WARNING
ALL WIRING MUST PERFORMED STRICTLY
IN ACCORDANCE WITH THE WIRING
DIAGRAM LOCATED ON THE INSIDE OF THE
'
INDOOR UNIT S WIRE COVER.
Unscrew the cable clamp below the terminal
4.
block and place it to the side.
Terminal block
Wire cover
Screw
Cable clamp
Fig. 3.9
wire cover.
Page 17
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