15
9-3. INDOOR – OUTDOOR CONNECTING CABLE
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient
insulation to earth or a poor electrical contact at the intermediate connection point.
Indoor unit-Outdoor unit
Indoor/Outdoor separate
power supply
Max. 120m
2
%
Min. 0.3
—
Indoor unit-Outdoor unit earth
Wire No.
%
Size (
$
)
+
The optional indoor power supply terminal kit is necessary.
WIRING SPECIFICATIONS FOR 220-240 V 50 Hz
(INDOOR-OUTDOOR CONNECTING CABLE)
Cross section of cable
Wire size (mm
2
)
Number of wires
Polarity
L (m)*6
Round
2.5
3
Clockwise : S1-S2-S3
* Pay attention to stripe of yellow and green.
(30)
*2
Flat
2.5
3
Not applicable
(Because center wire has no cover finish)
Not applicable
*5
Flat
1.5
4
From left to right : S1-Open-S2-S3
(18)
*3
Round
2.5
4
Clockwise : S1-S2-S3-Open
*Connect S1 and S3 to the opposite angle.
(30)
*4
*1 : Power supply cords of appliances shall not be lighter than design 60245 IEC or
227 IEC.
*2 : In case that cable with stripe of yellow and green is available.
*3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm².
*4 : In case of regular polarity connection (S1-S2-S3).
*5 : In the flat cables are connected as this picture, they can be used up to 30 m.
*6 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, Humidity
or materials, etc.
(3C Flat cable × 2)
OCH424E
