Mitsubishi Electric Mr. SLIM PCA-M KA Serie Manuel D'installation page 9

6. Electrical work
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.
B C
A
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
D
L
B C
A
N
S1
S2
S3
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Indoor unit earth
Remote controller-Indoor unit
Indoor unit (Heater) L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. <For 50-140 outdoor unit application>
Max. 45 m
If 2.5 mm used, Max. 50 m
2
If 2.5 mm used and S3 separated, Max. 80 m
2
<For 200/250 outdoor unit application>
Max. 18 m
If 2.5 mm used, Max. 30 m
2
If 4 mm used and S3 separated, Max. 50 m
2
If 6 mm 2 used and S3 separated, Max. 80 m
*2. 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.)
*3. The figures are NOT always against the ground.
S3 terminal has 24 V DC / 28 V DC against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
*4. 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. Indoor and outdoor connecting wires have polarities. Make sure to match the terminal number (S1, S2, S3) for correct wirings.
5. 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.
6.1.2. Separate indoor unit/outdoor unit power supplies (For PUZ/PUHZ 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.
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.
1 System
D G
L
N
S1 S1
S2 S2
S3 S3
E
1
F
2
Simultaneous twin/triple/quadruple system
G G G
S1 S1 S1
S2 S2 S2
S3 S3 S3
E
1 1 1
F
2 2 2
H H
PCA
*1 3 × 1.5 (polar)
*1 1 × Min.1.5
1 × Min.1.5
*2 2 × 0.3 (Non-polar)
*3 -
*3 230 V AC
*3 *4 24 V DC / 28 V DC
*3 12 V DC
G
L
B C
J H
N
S1
S2
S3
E
1
F
2
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
G
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
S1
D Outdoor unit
S2
E Indoor unit/outdoor unit connecting cables
S3
F Remote controller
G Indoor unit
1
H Indoor unit earth
2
H
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
en
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