6
5. Electrical work
5.1. Indoor unit (Fig. 5-1, 5-2)
1) Remove the front panel, then remove the corner box from the lower right corner
of the indoor unit.
2) Remove the screw fixing the electric parts cover and remove the cover.
3) Connect the power cable and transmission cable to the terminal block.
• The electric parts box may have to be pulled forward during customer service
etc. Therefore, the wires must have some extra length.
* Take care when using strand wires, because beards may cause the wiring to
short out.
4) Connect the connector for MA remote controller.(Non-polarized 2-wire)
5) Connect the attached cable
5
to the CN90 on controller board in the electrical
parts box.
* Be sure to connect in case of using MA/M-NET Remote controller.
6) Fix the MA Remote controller cable
4
and the cable
5
with the clamp through
the claw on the right side of the electrical parts box.
7) Fix the MA remote controller cable
4
on the fixing clamp with the cable running
along the down side of the terminal block.
8) Fix the cable
5
with the attached band
6
.
9) Bring out the lead wire on the back side of the front panel to the corner box
side. Put back the electrical cover and front panel.(Do not pull the lead wire
strongly.)
10) After connecting the connectors (yellow 9-pole) on the indoor unit and front
panel, slide the glass tube and fix it with the attached fastener
7
at which the
connector joint part is not exposed.
* Be sure to connect in case of using MA/M-NET Remote controller.
11) Fix each wire with the clamp for on-site wiring under the electrical parts box
and put the corner box cover back.
A means for the disconnection of the supply with an isolation switch, or similar
device, in all active conductors shall be incorporated in the fixed wiring.
5.2. Power supply wiring
• Power supply codes of appliance shall not be lighter than design 245 IEC 53 or
227 IEC 53.
• Install an earth line longer than other cables.
• A switch with at least 3 mm, 1/8 inch contact separation in each pole shall be
provided by the air conditioner installation.
Power cable size : more than 1.5mm
2
(AWG16)
[Fig. 5-3]
A
Switch 16 A
B
Overcurrent protection 16 A
C
Indoor unit
D
Total operating current be less than 16 A
E
Pull box
X
Selecting non-fuse breaker (NF) or earth leakage breaker (NV).
For breaker, means shall be provided to ensure disconnection of all active
phase conductors of the supply.
5.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire CVVS or CPEVS
Cable diameter
More than 1.25 mm
2
(AWG16)
Length
Less than 200 m, 219 yard
2. M-NET Remote control cables
Types of remote control cable
Shielding wire MVVS
Cable diameter
More than 0.5 (AWG20) to 1.25 mm
2
(AWG16)
Length
Add any portion in excess of 10 m, 33 ft to
within the longest allowable transmission cable
length 200 m, 219 yard.
3. MA Remote control cables
Types of remote control cable
2-core cable (unshielded)
Cable diameter
0.3 (AWG22) to 1.25 mm
2
(AWG16)
Length
Less than 200 m, 219 yard
A
Terminal block for power supply
B
Terminal block for transmission cable (Shared with the M-NET remote controller)
C
Connector for MA remote controller
H
Conduit plate
D
MA remote controller cable (ACCESSORY
4
)
I
Bush (purchased locally)
E
Cable (ACCESSORY
5
)
J
Lock nut (purchased locally)
F
Band (ACCESSORY
6
)
K
Connector (purchased locally)
G
The clamp for on-site wiring
L
Conduit (purchased locally)
Fig. 5-1
/
M2
M1
L2
L1
GR
CN90
Right side view (from
a
)
Claw
Clamp
Fasten the cables with the clamp
Cable(Front panel side)
Connect the connector
Direction to slide
Fastener
7
(Leave about four beads
and cut the rest.)
Fig. 5-2
A
B
E
C
TB2
TB5
TB15
S
1 2
M1
L1 L2 GR
M2
L
K
H
I J
Fig. 5-3
