Mitsubishi Electric Mr.SLIM PKA-M-LA(L)2 Series Installation Manual page 12

6. Electrical work
6.1.2. Separate indoor unit/outdoor unit power supplies (For PUHZ/PUZ application only)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* The indoor power supply terminal kit is required.
B C
A
* Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
* The indoor power supply terminal kits are required.
en
D
B C
A
* Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Note:
Some units cannot be used in a simultaneous twin/triple/quadruple system. Refer to the outdoor unit installation manual for details.
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.
Refer to the installation manual for the Power supply terminal kit.
Indoor power supply terminal kit (option)
Indoor unit electrical box connector
connection change
Label affixed near each wiring diagram
for the indoor and outdoor units
Outdoor unit DIP switch settings (when
using 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 power switch (Breaker)
Indoor unit power supply & earth
Indoor unit earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Wired remote controller (option) Indoor unit
Indoor unit L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Wired remote controller (option) 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.)
*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.
Warning:
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
10
D
G
J
B C
H
E
F
Simultaneous twin/triple/quadruple system
G G G
J
B C
E
F
Required
Required
Required
ON
OFF 1 2
Set the SW8-3 to ON.
*1
*2
*3
*4
*4
*4 *5
*4
1:1 System
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cables
F Remote controller
G Indoor unit
H Option
J Indoor unit power supply
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
G
D Outdoor unit
E Indoor unit/outdoor unit connecting cables
F Remote controller
H
G Indoor unit
H Option
J Indoor unit power supply
<Replacing the indoor unit terminal block>
3
2
1 Disconnect connector CN3C (blue) from
3
the indoor controller board.
2 Disconnect connector CN01 (black) from
(SW8)
the indoor controller board.
3 Remove the screw.
4 Remove the screw from the terminal block.
PKA-M·LA(L)2 Series
~/N (single), 50 Hz, 230 V
16 A
3 × Min. 1.5
1 × Min. 1.5
2 × Min. 0.3
–
2 × Min. 0.3 (Non-polar)
230 V AC
–
24 V DC / 28 V DC
12 V DC
4
CN01
1
CN3C
Install the optional Power supply terminal kit.
Refer to the installation manual that comes
with the optional Power supply terminal kit
for details.
1 Secure the terminal block with the screw.
2 Fix the round terminal with the screw.
3 Connect connector CN01 (black) to the
indoor controller board.
4 Connect connector CN3C (blue) to the
indoor controller board.
2
1
3
CN01
4
CN3C