Electrical Work - Mitsubishi Electric PLA-A-BA4 Series Installation Manual

6. Electrical work

CN105
(RED)
Fig. 6-2
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.
D
L
A B C
N
S1
S2
S3
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
D
L
A B C
N
S1
S2
S3
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Fig. 6-1
1 System
I
CN105
RED
H
S1
S2
G
S3
1
F
2
E
Simultaneous twin system
G G
S1 S1
S2 S2
S3 S3
1 2
E F
2 1
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)
Entry for control cable
A
Entry for power
B
Clamp
C
Electrical box cover
D
Service panel for electrical wiring
E
Temporary hook for electrical box cover
F
Indoor / Outdoor unit connecting terminals
G
Wired remote controller connector
H
Secure with the clamp
I
Earth terminal
J
Electrical box
K
L Indoor controller board
1:1 System
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
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
E
G Indoor unit