Mitsubishi Electric Mr.SLIM PKA-MKA Serie Manuel D'installation page 14

6. Electrical work
Indoor unit model
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Indoor 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. <For 25-140 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 PUHZ-RP100/125/140 YHA application, use shield wires. The shield part must be grounded with the indoor unit OR the outdoor unit, NOT with both.
<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 used and S3 separated, Max. 80 m
2
*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.)
en
*3. The figures are NOT always against the ground.
S3 terminal has 24V DC/28V 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 cords.
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 PUHZ/PUZ-ZM application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* The optional wiring replacement kit is required.
B
A
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
* The optional wiring replacement kits are required.
D
L
B C
N
A
S1
S2
S3
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
12
*1
*1
*2
*3
*3
*3 *4
*3
G
D
L
L
C B C
N
N J H
S1 S1
S2 S2
S3 S3
E
1
F
2
Simultaneous twin/triple/quadruple system
G H G H G
L L L
B C
J N N N
S1 S1
S1
K
S2 S2 S2
S3 S3 S3
E
1
F
2
PKA-M·KA(L) Series
3 × 1.5 (Polar)
1 × Min. 1.5
1 × Min. 1.5
2 × Min. 0.3
–
230V AC
24V DC/28V DC
12V DC
1:1 System
Outdoor unit power supply
A
Earth leakage breaker
B
Wiring circuit breaker or isolating switch
C
Outdoor unit
D
Indoor/outdoor unit connecting cords
E
Wired remote controller (option)
F
Indoor unit
G
Option
H
Indoor unit power supply
J
Outdoor unit power supply
A
Earth leakage breaker
B
Wiring circuit breaker or isolating switch
C
H G H
Outdoor unit
D
L
Indoor/outdoor unit connecting cords
E
N
Wired remote controller (option)
F
S1 Indoor unit
G
K K
S2
Option
H
S3
Indoor unit power supply
J
Indoor unit earth
K