6
4. Electrical work
4.1. Indoor unit (Fig. 4-1)
1. Remove the electrical wiring service panel.
2. Remove the electrical box cover.
3. Remove the MA Remote controller terminal cover.
4. Wire the power cable and control cable separately through the respective wiring
entries given in the diagram.
• Do not allow slackening of the terminal screws.
• Leave excess cable so that the electical box cover can be suspended below the
unit during servicing.(Approx. 50 to 100 mm)
A
Entry for remote controller cable
B
Entry for power and control cable
C
Clamp
D
Electrical box cover
E
Service panel for electrical wiring
F
Temporary hook for elrctrical box cover
G
MA Remote controller terminal cover
H
Power supply terminals (with earth terminal) (L, N,
)
I
Transmission terminals (M1,M2,S)
J
MA Remote controller terminal (1,2)
K
Secure with the clamp
4.2. Power supply wiring
• Install an earth longer than other cables.
• Power supply codes of appliance shall not be lighter than design 60245 IEC 53
or 60227 IEC 53.
• A switch with at least 3 mm contact separation in each pole shall be provided by
the air conditioner installation.
Power cable size : more than 1.5mm
2
►
Use earth leakage breaker (NV).
For breaker, means shall be provided to ensure disconnection of all active phase
conductors of the supply.
[Fig.4-2]
A
Switch 16 A
D
Total operating current be less than 16 A
B
Overcurrent protection 16 A
E
Pull box
C
Indoor unit
4.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire CVVS or CPEVS
Cable diameter
More than 1.25 mm²
Length
Less than 200m
2. M-NET Remote control cables
Types of remote control cable Shielding wire MVVS
Cable diameter
0.5 to 1.25 mm²
Length
Add any portion in excess of 10m to within the
longest allowable transmission cable length 200m
3. MA Remote control cables
Types of remote control cable 2-core cable (unshielded)
Cable diameter
0.3 to 1.25 mm²
Length
Less than 200m
Fig. 4-1
Fig. 4-2
1 2
M1 M2 S
TB2
TB5
TB15
L N
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