Mitsubishi Electric Mr.Slim PCA-M HA Series Installation Manual page 9

6. Electrical work
If the indoor and outdoor units have separate power supplies, refer to the table at the
below. If the optional wiring replacement 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.
Indoor power supply terminal kit (option)
Indoor unit electrical box connector con-
nection 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 three 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
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
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2. Max. 120 m
*3. Max. 500 m
(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.)
*4. The figures are NOT always against the ground.
*5. It depends on the outdoor 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.
5. Installation must be comply with the electrical wiring rule.
Warning:
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
Indoor unit specifications
Required
Required
Required
ON 3
(SW8)
OFF 1 2
*1
*2
*3
*4
*4
*4 *5
*4
Connectors (connections when shipped
from the factory are for indoor unit power
Option
supplied from outdoor unit)
L
N
BLACK
CN01
Indoor unit
S1
control board
S2
S3
Indoor unit power supplied from outdoor unit
(when shipped from factory)
PCA
~/N (single), 50 Hz, 230 V
16 A
2 × Min. 1.5
1 × Min. 1.5
2 × Min. 0.3
–
2 × 0.3 (Non-polar)
230 VAC
–
24 VDC / 28 VDC
12 VDC
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Option
Connectors
L
N
BLACK
CN01
Indoor unit
S1
control board
S2
S3
Separate indoor unit/outdoor unit power supplies
en
8