Mitsubishi Electric Mr. SLIM PCA-M KA Serie Manuel D'installation page 10

6. Electrical work
* The indoor power supply terminal kits are required.
D
L
B C
A N
S1
S2
S3
* Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
If the indoor and outdoor units have separate power supplies, refer to the table below.
If the indoor power supply terminal kit is used, change the indoor unit electrical box
wiring refering to the figure in the right and the DIP switch settings of the outdoor
unit control board.
en
Indoor power supply terminal kit (option)
Indoor unit electrical box connector connec-
tion change
Label affixed near each wiring diagram for the
indoor and outdoor units
Outdoor unit DIP switch settings (when us-
ing separate indoor unit/outdoor unit power
supplies only)
* There are 3 types of labels (labels A, B and C). Affix the appropriate labels to the
units according to the wiring method.
Indoor unit model
Indoor unit power supply
Indoor unit input capacity
Main switch (Breaker)
Indoor unit power supply & earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Indoor unit L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
3. Install an earth longer than other cables.
4. Wiring for remote controller cable shall be apart (50 mm or more) from power source wiring so that it is not influenced by electric noise from power
source wiring.
Warning:
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
8
Simultaneous twin/triple/quadruple system
H H
G G G
L L L
B C
J
N N N
S1 S1 S1
K
S2 S2 S2
S3 S3 S3
E
1 1 1
F
2 2 2
Indoor unit specifications
Required
Required
Required
ON
OFF 1 2
Set the SW8-3 to ON.
~/N (single), 50/60 Hz, 230 V
*1
*2
*3 2 × 0.3 (Non-polar)
*4
*4
*4 *5 24 V DC / 28 V DC
*4
A Outdoor unit power supply
B Earth leakage breaker
H H
C Wiring circuit breaker or isolating switch
G
D Outdoor unit
L
E Indoor unit/outdoor unit connecting cables
N
F Remote controller
G Indoor unit
S1
K K
S2 H Option
S3
J Indoor unit power supply
1
K Indoor unit earth
2
Option
L
N
S1
S2
3
S3
(SW8)
Indoor unit power supplied from outdoor unit
(initial setting)
PCA
16 A
*1. A breaker with at least 3.0 mm contact separation in each pole shall be pro-
3 × Min. 1.5
2 × Min. 0.3
–
*2. Max. 120 m
*3. Max. 500 m
230 V AC
–
*4. The figures are NOT always against the ground.
12 V DC
*5. It depends on the outdoor unit.
Connectors (connections of initial setting
are for indoor unit power supplied from
outdoor unit)
BLACK
CN01
Indoor unit
Option
control board
L
N
S1
S2
S3
Separate indoor unit/outdoor unit power supplies
vided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase
conductors of the supply.
(When using 2 remote controllers, the maximum wiring length for the remote
controller cables is 200 m. If 2 remote controllers are connected, set one to
"Main" and the other to "Sub". For setting procedures, refer to "Initial settings"
in the installation manual for the remote controller.)
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Connectors
BLACK
CN01
Indoor unit
control board