Mitsubishi Electric PUZ-A18NHA6 Service Manual page 21

8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES
The following illustrations show available connection patterns.
The outdoor unit power supply patterns vary on models.
The optional indoor power supply terminal kit is required.
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
If the indoor and outdoor units have separate power supplies, refer to the table below.
Change the indoor unit electrical box wiring referring to the figure in the right and
the DIP switch settings of the outdoor unit control board.
Indoor unit electrical box connector con-
nection 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)
Note:
There are three types of label; A, B and C.
Affix the appropriate label to the units according to the wiring method.
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. Maximum 393 ft [120 m]
*2. The 30 ft [10 m] wire is attached in the remote controller accessory. Maximum 1,500 ft [500 m]
*3. The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300 V or more for the power supply cables.
4. Install an earth longer than other cables.
1:1 System
C
L1
A B
G
L2
GR
S1
S2
S3
D
Simultaneous twin system
C
L1
G
A B B
L2
GR
S1
S2
S3
D
Indoor unit specifications
Required
Required
ON 3
(SW8)
OFF 1 2
PLA-A12, 18, 24, 30
PKA, PCA-A24, 30
Single 208/230 V, 60 Hz Single 208/230 V, 60 Hz
1 A
15 A
2 o Min. AWG16
1 o Min. AWG16
2 o AWG22 (polar)
*1
–
2 o AWG22 (Non-polar) 2 o
*2
*3 208/230 V AC
–
*3
*3 24 V DC
*3 12 V DC
F
L1
H
B
L2
GR
S1
S2
S3
1
E
2
H
F F
L1 L1
L2 L2
GR GR
J
S1 S1
S2 S2
S3 S3
1 1
E
2 2
Connectors (connections when
shipped from the factory are
for indoor unit power supplied
from outdoor unit)
L1
L2
GR
CN101
Indoor unit
S1
control board
S2
S3
Indoor unit power supplied
from outdoor unit (Initial
setting)
PLA-A36, 42
PEAD-A24, 30, 36, 42
PCA-A36, 42
Single 208/230 V, 60 Hz
2 A 2.63, 2.73, 3.30, 3.50 A
15 A 15 A
2 o Min. AWG16
–
1 o Min. AWG16
–
2 o AWG22 (polar) 3 o 1.5 (polar)
1 o Min.1.5
–
2 o 0.3 (Non-polar)
AWG22 (Non-polar)
208/230 V AC 208/230 V AC
– –
24 V DC 24 V DC
12 V DC 14 V DC
A
Outdoor unit power supply
B
Wiring circuit breaker or isolating switch
C
Outdoor unit
D
Indoor unit/outdoor unit connecting cords
E
Remote controller
F
Indoor unit
G
Indoor unit power supply
H
Option
A
Outdoor unit power supply
B
Wiring circuit breaker or isolating switch
C
Outdoor unit
D
Indoor unit/outdoor unit connecting cords
E
Remote controller
F
Indoor unit
G
Indoor unit power supply
H
Option
J
Indoor unit earth
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Connectors
L1
L2
GR
CN101
Indoor unit
S1
control board
S2
S3
Separate indoor unit/outdoor unit power
supplies
PEA-A12, 18
Single 208/230 V, 60 Hz
1 A
15 A
–
–
3 o 1.5 (polar)
1 o Min.1.5
2 o 0.3 (Non-polar)
208/230 V AC
–
24 V DC
12 V DC