6
5. Electrical work
Fig. 5-1
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
D
MA remote controller cable (ACCESSORY
4
)
E
Cable (ACCESSORY
5
)
F
Band (ACCESSORY
6
)
G
The clamp for on-site wiring
Fig. 5-4
S
S
TB3
TB5
TB5
M1 M2
M1 M2
M1 M2
2
1
2
1
a
S
S
TB3
M1 M2
TB5
M1 M2
TB5
M1 M2
2
1
2
1
TB5
Pair No.
0
Pair No.
0
Pair No.
0
TB5
S
M1 M2
S
M1 M2
TB3
M1 M2
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 fi xing 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.
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 fi xing 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 fi x 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 de-
vice, in all active conductors shall be incorporated in the fi xed 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 pro-
vided by the air conditioner installation.
Power cable size : more than 1.5mm
2
(3-core)
[Fig.5-3]
Switch 16 A
Total operating current be less than 16 A
Overcurrent protection 16 A
Pull box
Indoor unit
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
Length
Less than 200m
2. M-NET Remote control cables
Types of remote control cable
Shielding wire MVVS
Cable diameter
More than 0.5 to 1.25 mm
2
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 mm
2
Length
Less than 200m
5.4. Connecting remote controller, indoor and outdoor
transmission cables (Fig. 5-4)
• Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire) The “S” on
indoor unit TB5 is a shielding wire connection. For specifi cations about the con-
necting cables, refer to the outdoor unit installation manual.
Note:
As for PKFY-P·BM series, TB5 has two terminals and does not have S terminal.
The earths of shielding wires are crimping-connected. Insulate the connected
parts with insulating tapes and so on.
• Install a remote controller following the manual supplied with the remote controller.
• Connect the remote controller’s transmission cable within 10 m using a 0.75 mm
2
core cable. If the distance is more than 10 m, use a 1.25 mm
2
junction cable.
1
MA Remote controller
• Connect the “1” and “2” on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
• DC 9 to 13 V between 1 and 2 (MA remote controller)
2
M-NET Remote controller
• Connect the “M1” and “M2” on indoor unit TB5 to a M-NET remote controller.
(Nonpolarized 2-wire)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
3
Wireless remote controller(When installing wireless signal receiver)
• Connect the wire of wireless signal receiver (9-pole cable) to CN90 of indoor con-
troller board.
• When more than two units are run under group control using wireless remote
controller, connect TB15 each with the same number.
• To change Pair No. setting, refer to installation manual attached to wireless re-
mote controller. (In the default setting of indoor unit and wireless remote control-
ler, Pair No. is 0.)
Terminal block for indoor transmission cable
Terminal block for outdoor transmission cable(M1(A), M2(B),
(S))
Remote controller
Wireless signal receiver
Wireless remote controller
A
B
E
C
L N
TB2
TB5
TB15
1 2
M1 M2
Fig. 5-3
Cable(Front panel side)
Fasten the cables with the clamp
CN90
/
Clamp
Claw
M2
M1
N
L
Right side view (from
/
)
Fig. 5-2
Direction to slide
Connect the connector
Fastener
(Leave about four beads
and cut the rest. )
