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9-3. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality.
For field wiring requirements, please refer
to your local electrical codes. Carefully observe these regula-
tions when carrying out the installation.
Table 2 lists recommended wire lengths and size for power
supply systems.
NOTE
Refer to the WIRING SYSTEM DIAGRAM for the meaning of
"A", "B" and "C" in Table 2.
Table 2
Cross Sectional
2
Area (mm
)
Model
MC1827
WARNING
WARNING
CAUTION
(A) Power Supply Wiring Length (m)
2
(#14)
(#12)
18
Be sure to comply with
local codes on running the
wire from the indoor unit to
the outdoor unit (size of
wire and wiring method,
etc.).
Each wire must be firmly
connected.
No wire should be allowed
to touch refrigerant tubing,
the compressor, or any
moving part.
To avoid the risk of electric
shock, each air conditioner
unit must be grounded.
Be sure to connect the
power supply line to the
outdoor unit as shown in
the wiring diagram. The
indoor unit draws its power
from the outdoor unit.
(B) Power Line Length (m)
3.5
2
(#14)
27
20
WIRING SYSTEM DIAGRAM
Indoor
unit A
Terminal
1
2
3
4
5
6
7
1
2
3
4
5
6
7
Indoor
unit B
Terminal
20
(C) Cont rol Line
0.75
(#18)
20
# ······ AWG (American Wire Gauge)
Outdoor unit
Terminal 8PA
Grounding line
B
220 V
220 V
C
Terminal 8PB
Grounding line
B
220 V
220 V
C
A
Power supply
Single-Phase,
50Hz, 220V
Grounding
line
Fuse or Circuit
Capacity
20 A
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
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