Electrical Work; Power Supply Wiring; Types Of Control Cables - Mitsubishi Electric CITY MULTI PKFY-P*VBM-E Installationshandbuch

5. Electrical work

CN90
L N M1 M2
Fasten the cables with the clamp
Cable(Front panel side)
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
E 5
Cable (ACCESSORY )
F 6
Band (ACCESSORY )
G
The clamp for on-site wiring
Fig. 5-1
Connect the connector
Direction to slide
Fig. 5-2
A B E
L N M1 M2
C
TB2 TB5 TB15
Fig. 5-3
6
Right side view (from )
Claw
Clamp
4
)
Fastener
(Leave about four beads
and cut the rest. )
A
Switch 16 A
B
Overcurrent protection 16 A
C
Indoor unit
D
Total operating current be less than 16 A
E
Pull box
1 2
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.
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 de-
vice, in all active conductors shall be incorporated in the fixed wiring.

5.2. Power supply wiring

• Wiring size must comply with the applicable local and national code.
• 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
Warning:
Never splice the power cable or the indoor-outdoor connection cable, other-
wise it may result in a smoke, a fire or communication failure.
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
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
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
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 specifications 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
core cable. If the distance is more than 10 m, use a 1.25 mm
2
(3-core)
2
2
2
2
junction cable.
2