MITSUBISHI ELECTRIC Mr. Slim PLA-A-AA - Manual (Page 9)

9
6. Electrical work
6.1.3. K-control application
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
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
H Indoor unit power supply
Simultaneous twin system
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 Main indoor unit
G Sub indoor unit
H Indoor unit power supply
J Main indoor unit
K Sub indoor unit
*1. Max. 50 m, 165 ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*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 300V or more for the power supply cables.
4. Install an earth longer than other cables.
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 *1
Indoor unit earth
Remote controller-Indoor unit
*2
Indoor unit L1-L2 *3
Indoor unit-Outdoor unit S1-S2 *3
Indoor unit-Outdoor unit S1-S3 *3
Remote controller-Indoor unit *3
PLA-A12, 18, 24, 30 PLA-A36, 42
Single 208/230 V, 60 Hz Single 208/230 V, 60 Hz
1 A 2A
15A 15A
2 × Min. AWG16 2 × Min. AWG16
1 × Min. AWG16 1 × Min. AWG16
H/P: 3 × AWG22 (polar) H/P: 3 × AWG22 (polar)
C/O: 2 × AWG22 (polar) C/O: 2 × AWG22 (polar)
– –
2 × AWG22 (Non-polar) 2 × AWG22 (Non-polar)
AC 208/230 V AC 208/230 V
DC12V DC12V
DC12V DC12V
DC12V DC12V
Circuit rating
Wir
ing
Wire No
. ×
siz
e
S1
S2
L1
L2
GR GR
1
2
L1
L2
S1
S2
S3
S3
A B
C
H
D
B
E
F
S1
S2
L1
L2
GR GR
1
2
L1
L2
S1
S2
S3
S3
A B
C
H
D
B
E
G
1
SW5
Set the DIP switch of the indoor
unit control board.
SW5–1 : ON SW5–2, 3 : OFF
2 3
1
SW5
Set the DIP switch of the indoor
unit control board.
SW5–1, 2 : ON SW5–3 : OFF
2
3
S1
S2
L1
GR
L2
1
2
L1
L2
GR GR
S1
S2
S3
1
2
L1
L2
S1
S2
S3
S3
A B
C
D
H B
E
F G
S1
S2
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
A B
C
D
H B
E
J K
L1
L2
GR
L1
L2
GR
L1
L2
GR
1
SW5
Set the DIP switch of the indoor
unit control board.
SW5–1 : ON
SW5–2 : OFF
SW5–3 : OFF
2 3
1
SW5–1 : ON
SW5–2 : OFF
SW5–3 : ON
2
3
G Main indoor H Sub indoor
1
SW5
Set the DIP switch of the indoor
unit control board.
SW5–1 : ON
SW5–2 : ON
SW5–3 : OFF
2
3
1
SW5–1 : ON
SW5–2 : ON
SW5–3 : ON
2 3
K Main indoor L Sub indoor
OFF ON
SW5–1 A–CONTROL K–CONTROL
SW5–2 heat pump models cooling only models
SW5–3 MAIN SUB
S1
S2
S3
L1
L2
GR
BLUE BLUE
YELLOW YELLOW
CND
CND
ORANGE
CN3C
BLUE
CN30
BLACK
S1
S2
S3
L1
L2
GR
BLUE YELLOW
YELLOW BLUE
CND
CND
ORANGE
CN3C
BLUE
CN30 CN30
CN30
CN3C
CN3C
BLACK
INDOOR UNIT
CONTROL BOARD
INDOOR UNIT
CONTROL BOARD
Connectors
To change to the K-control,
make sure to change the
connectors as shown in the
figure.
BLUE BLUE
BLACK BLACK
BLUE
BLUE
BLACK
BLACK
To change to K-control, set the DIP switch (SW5) of the indoor unit control board as
shown in the above figure and change the electric wiring of the indoor unit as shown
in the right figure.
Set up Dip switch after turning off Power supply switch.
Be careful that setting the DIP switch (SW5) of the indoor unit control board varies
between the heat pump models and cooling models of the outdoor unit.
DIP switch (SW5)
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to
the units according to the wiring method.
} Dip switch SW5-2 and SW5-3 is effective only
when Dip switch SW5-1 (K-CONTROL) is ON.
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
BG79U795H01_en.pm6 05.12.1, 9:48 AM 9