Mitsubishi Electric Mr. SLIM PLA-A EA7 Série Manuel D'installation page 8

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.
D
L1
A B C
L2
GR
S1
S2
S3
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
D
L1
A B C
L2
GR
S1
S2
S3
* Affix label A 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 system. Refer to the outdoor unit installation manual for details.
Indoor unit model
Minimum circuit ampacity
Maximum ration of overcurrent protective device
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Wired remote controller-Indoor unit
*1. <For 35-140 outdoor unit application>
Max. 45 m, 148 ft
If AWG13 (2.5 mm ) used, Max. 50 m, 165 ft
2
If AWG13 (2.5 mm ) used and S3 separated, Max. 80 m, 263 ft
2
<For 200/250 outdoor unit application>
Max. 18 m, 59 ft
If AWG13 (2.5 mm ) used, Max. 30 m, 99 ft
2
If AWG11 (4 mm 2 ) used and S3 separated, Max. 50 m, 165 ft
If AWG9 (6 mm ) used and S3 separated, Max. 80 m, 263 ft
2
*2. Max. 500 m, 1640 ft
(When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 m, 656 ft.)
*3. The figures are NOT always against the ground.
S3 terminal has 24 VDC against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
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. Use copper supply wires.
4. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.
5. Install an earth longer than other cables.
6. Indoor and outdoor connecting wires have polarities. Make sure to match the terminal number (S1, S2, S3) for correct wirings.
7. Wiring for remote controller cable shall be apart (5 cm, 2 inch 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
1:1 System
I
G
H
S1
S2
CN105
RED
S3
1
F
2
E
Simultaneous twin system
G G
S1 S1
S2 S2
S3 S3
2
1
F
E E
2 1
PLA-A12EA7 PLA-A18EA7
1 A
*1
*2
*3
*3
*3
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor earth
F Wired remote controller
G Indoor controller board
H Radio frequency interface for RF thermostat
I Indoor unit
Only for wired remote controller
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor earth
F Wired remote controller
G Indoor unit
PLA-A24EA7 PLA-A30EA7
1 A 1 A
15 A
3 × AWG14 (polar)
1 × Min. AWG14
2 × AWG22 (Non-polar, unshielded)
208/230 VAC
24 VDC
12 VDC
PLA-A36EA7 PLA-A42EA7
1 A 2 A 2 A