Mitsubishi Electric PKA-ALA Serie Manuel D'installation page 11

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.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Applied earth type depends on outdoor unit.
Please refer to connected outdoor unit Installation Manual.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit-Outdoor unit
Indoor unit earth
Wired remote controller-Indoor unit
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Wired remote controller-Indoor unit
*1. <For 12-36 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
*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 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. Use copper supply wires.
4. Use UL wires rated 300 V or more for the power supply cords and the indoor unit/outdoor unit connecting cords.
5. Install an earth longer than other cords.
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.
8. This appliance incorporates an earth connection for functional purpose only.
Warning:
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
1
1:1 System
C
L1
B
A
L2
GR
D
S1
S2
S3
E
G
D
L1
B C
A L2
GR
S1
S2
S3
E
Simultaneous twin system
C
L1
B
A
L2
GR
D
S1
S2
S3
E
G
PKA-A·LA1 Series
1 A
15 A
*1 3 × AWG14 (Polar)
1 × Min. AWG14
*2 2 × Min. AWG22 (Non-polar, unshielded)
*3 208/230 V AC
*3 *4 24 V DC / 28 V DC
*3 12 V DC
A Outdoor unit power supply
F
B Wiring circuit breaker or isolating switch
C Outdoor unit
CN105
D Indoor unit/outdoor unit connecting cords
(RED)
E Wired remote controller
I
S1
F Indoor unit
S2
H
S3
G Indoor unit earth
H Indoor controller board
1
I Radio frequency interface for RF thermostat
2
Only for 1:1 System
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
F
2
■
Only for wired remote controller.
F F
A Outdoor unit power supply
B Wiring circuit breaker or isolating switch
C Outdoor unit
S1 S1
D Indoor unit/outdoor unit connecting cords
S2 S2
E Wired remote controller
S3 S3
F Indoor unit
1 1 G Indoor unit earth
2 2
G
en
10