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9
WIRING SPECIFICATIONS
✽
1 : In case that cable with stripe of yellow and green is available.
✽
2 : In the flat cables are connected as this picture, they can be used up to 30m.
✽
3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm
2
.
✽
4 : In case of regular polarity connection (S1-S2-S3).
✽
5 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or materials, etc.
The cable length may vary depending on the condition of installation, humidity or materials, etc.
When cable length is 30m or more.
Use one cable for S1 and S2 and another for S3 as shown in the picture.
The cable shall not be lighter than design 245 IEC or 227 IEC.
Cross section
of cable
Round
2.5
2.5
1.5
2.5
3
3
4
4
(30)
✽
1
(18)
✽
3
30
✽
4
Not
applicable
✽
2
Flat
Flat
Round
Wire size
(mm
2
)
Number
of wires
Clockwise : S1-S2-S3
Clockwise : S1-S2-S3-Open
Connect S1 and S3 to the opposite angle
Not applicable
(Because center wire has no cover finish)
From left to right : S1-Open-S2-S3
Polarity
L(m)
✽
5
(3C Flat cable
✕
2)
S1 S2 S3
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 ground or a poor electrical contact at the intermediate connection point.
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
If the wiring connecting the indoor and outdoor units is longer than 80m, use separate indoor / outdoor unit power
supplies. (Refer to 10-2.)
S1
S2
S3
wire size :
cable length 50m : 4mm
2
cable length 80m : 6mm
2
WIRING SPECIFICATIONS FOR 220V-240V 50Hz
(INDOOR - OUTDOOR CONNECTING CABLE)
OC338B-1.qxp 06.7.11 10:49 AM Page 14
