7
6. Electrical work
6.1. Indoor unit (Fig. 6-1)
1. Remove the electrical wiring service panel.
2. Remove the electrical box cover.
3. For radio frequency interface.
Connect the electric wires securely to CN105 (RED) of indoor controller board.
(Fig. 6-2)
For wired remote controller.
Wire the power cable and control cable separately through the respective wiring
entries given in the diagram.
• Do not allow slackening of the terminal screws
.
• Leave excess cable so that the electrical box cover can be suspended below the
unit during servicing. (Approx. 50 to 100 mm, 2 to 4 inch)
A
Entry for control cable
B
Entry for power
C
Clamp
D
Electrical box cover
E
Service panel for electrical wiring
F
Temporary hook for electrical box cover
G
Indoor / Outdoor unit connecting terminals
H
Wired remote controller connector
I
Secure with the clamp
J
Earth terminal
K
Electrical box
L
Indoor controller board
6.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
S1
S2
L
N
1
2
S1
S2
S3
S3
A
B
C
D
E
F
G
I
H
CN105
RED
S1
S2
L
N
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
A
B
C
D
E
F
G
G
E
* Affi x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor earth
F Wired remote controller
G Indoor controller board
H Radio frequency interface for RF thermostat
I Indoor
unit
* Affi x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Only for wired remote controller
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor earth
F Wired remote controller
G Indoor unit
Fig. 6-1
Simultaneous twin system
1:1 System
12
TO REMO
TE
CONTR
OLLER
TO OUTDOOR
UNIT
CN105
(RED)
Fig. 6-2
