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5-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality.
For field wiring requirements, please refer to your local elec-
trical codes. Carefully observe these regulations when carry-
ing out the installation.
Table 7 shows maximum wire lengths for control line and
power line and fuse or circuit capacity.
NOTE
Refer to the wiring system diagram (Fig. 26) for the meaning
of "A" and "B" in Table 7.
Table 7
Cross-sectional Max. Control Line Length
2
Area (mm
)
Model
AE4MI91AH
WARNING
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.
Be sure to connect power wires correctly match-
ing up numbers on terminals of the outdoor unit
and respective indoor units A – C.
5-3. Wiring System Diagram
4 indoor units with AE4MI91AH
Max. Power Line Length
(A)
(B)
1.0
2.0
2.6
34 m
15 m
20 m
Indoor Unit
Unit A
Unit B
Unit C
Unit D
Fig. 26
15
Fuse
or
Circuit Capacity
3.5
26 m
30 A
To avoid the risk of electric
shock, each air conditioner
WARNING
unit must be grounded.
Be sure to connect the
CAUTION
power supply line to the
outdoor unit as shown in
the wiring diagram. The
indoor unit draws its power
from the outdoor unit.
Outdoor Unit
Terminal plate (16P)
(A)
Unit A
Unit B
Unit C
Unit D
Terminal plate (3P)
Grounding line
Power supply
Single-phase AC 220V – 240V
(B)
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