6. Electrical work

6.1.2.Separate indoor unit/outdoor unit power supplies (A-control application)

The following connection patterns are available.

The outdoor unit power supply patterns vary on models.

1:1 System

C

 

F

L1

 

L1

A B L2 G B

L2

GR

 

GR

S1

 

S1

S2

 

S2

S3

D

S3

 

1

 

E

 

 

2

*Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Simultaneous twin system

AOutdoor unit power supply

BWiring circuit breaker or isolating switch

COutdoor unit

DIndoor unit/outdoor unit connecting cords

ERemote controller

FIndoor unit

GIndoor unit power supply

C

 

F

F

L1

G B

L1

L1

A B L2

L2

L2

GR

 

GR

GR

S1

 

S1

S1

S2

 

S2

S2

S3

D

S3

S3

 

1

1

 

E

 

2

2

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

AOutdoor unit power supply

BWiring circuit breaker or isolating switch

COutdoor unit

DIndoor unit/outdoor unit connecting cords

ERemote controller

FIndoor unit

GIndoor unit power supply

If the indoor and outdoor units have separate power supplies, refer to the table at the below. Change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of the outdoor unit control board.

 

 

Indoor unit specifications

Indoor unit electrical box connector con-

 

 

Required

 

 

nection change

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Label affixed near each wiring diagram

 

 

Required

 

 

for the indoor and outdoor units

 

 

 

 

 

 

 

 

 

 

 

Outdoor unit DIP switch settings (when

 

 

 

 

 

 

 

using separate indoor unit/outdoor unit

 

ON

 

 

 

3

(SW8)

power supplies only)

 

OFF

1

2

 

 

 

 

 

 

 

 

 

 

*There are three types of labels (labels A, B, and C). Affix the appropriate labels to the units according to the wiring method.

Connectors (connections when shipped from the factory are for indoor unit power supplied from outdoor unit)

L2

BLUE

BLUE

 

 

 

L1

 

 

 

 

 

GR

YELLOW

YELLOW

CND

ORANGE

 

 

 

 

 

 

 

CND

 

S1

 

 

 

Indoor unit

 

 

 

 

control board

 

S2

 

 

 

 

 

 

 

 

 

S3

 

 

 

 

 

Indoor unit power supplied from outdoor unit

L1

(when shipped from factory)

 

 

L2

 

 

 

 

 

GR

 

 

 

 

 

S1

 

 

 

 

 

S2

 

 

 

 

 

S3

If the indoor and outdoor units have separate power supplies, change the connections of the connectors as shown in the following figure.

 

 

 

Connectors

YELLOW

BLUE

CND

 

BLUE

YELLOW

ORANGE

 

 

 

CND

 

 

 

Indoor unit

 

 

 

control board

Separate indoor unit/outdoor unit power supplies

Indoor unit model

 

PLA-A12, 18, 24, 30

PLA-A36, 42

Indoor unit power supply

 

Single 208/230 V, 60 Hz

Single 208/230 V, 60 Hz

Minimum circuit ampacity

 

1 A

2A

Maximum rating of overcurrent protective device

 

15A

15A

 

No.Wiresize

Indoor unit power supply

 

2 Min. AWG16

2 Min. AWG16

 

Wiring

Indoor unit power supply earth

 

1 Min. AWG16

1 Min. AWG16

 

 

 

 

 

Indoor unit-Outdoor unit

*1

2 AWG22 (polar)

2 AWG22 (polar)

 

 

 

Indoor unit earth

 

 

 

Remote controller-Indoor unit

*2

2 AWG22 (Non-polar)

2 AWG22 (Non-polar)

 

Circuit

rating

Indoor unit L1-L2

*3

AC 208/230 V

AC 208/230 V

 

Indoor unit-Outdoor unit S2-S3

*3

DC24 V

DC24 V

 

 

Indoor unit-Outdoor unit S1-S2

*3

 

 

 

 

 

 

 

 

 

Remote controller-Indoor unit

*3

DC12 V

DC12 V

*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.

8

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Image 8
Mitsubishi Electronics PLA-A-AA installation manual L2 G B, Power supplies only

PLA-A-AA specifications

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