Service manual

20
English
WARNING
G 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.).
G Each wire must be firmly connected.
G No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
G Be sure to connect power wires correctly
matching up numbers on terminals of the
outdoor unit and respective indoor units A – D.
CAUTION
G 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.
G Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone, security sys-
tem, or intercom any closer than 1 meter from the power cable and wires between the indoor and outdoor
units. Electrical noise may affect the operation.
G To avoid the risk of electric shock, each air
conditioner unit must be grounded.
G For the installation of a grounding device,
please observe local electrical codes.
G Grounding is necessary, especially for units
using inverter circuits, in order to release
charged electricity and electrical noise
caused by high tension.
Otherwise, electrical shock may occur.
G Place a dedicated ground more than 2 meters
away from other grounds and do not have it
shared with other electric appliances.
WARNING
Fig. 25a
4 indoor units with AE3MI68, AE4MI80
1
2
3
Ter mi nal
INDOOR UNIT
1
2
3
INDOOR UNIT
1
2
3
4
4
4
1
UNIT B
2
3
4
UNIT C
5
6
7
8
9
1
2
3
Ter mi nalTer mi nal
L
N
INDOOR UNIT
UNIT A
A
B
C
Ter mi nal
(3P)
Ter mi nal
(
12P
)
OUTDOOR UNIT
Grounding line
INDOOR UNIT
1
2
3
4
UNIT D
10
11
12
Ter mi nal
D
Grounding line
Grounding
line
Grounding line
Grounding line
Power supply Single-phase 220-240VAC 50Hz
220VAC 60Hz
(B)
(B)
(B)
(B)
(C)
(C)
(C)
(C)
(B)
(B)
(B)
(B)
(A)
5-3. Wiring System Diagram
1
2
3
Ter mi nal
INDOOR UNIT
1
2
3
4
4
1
UNIT B
2
3
4
5
6
7
8
Ter mi nal
INDOOR UNIT
UNIT A
A
B
Ter mi nal
(
8P
)
OUTDOOR UNIT
Grounding
line
Grounding line
Grounding line
Power supply
Single-phase 220-240VAC 50Hz
220VAC 60Hz
(B)
(B)
(C)
(B)
(B)
(C)
(A)
Fig. 25b
2 indoor units with AE2MI40, AE2MI56
07-336 AE4MI80AH_OU ENG 11/7/07 4:29 PM Page 20