Mitsubishi Electric Mr.Slim PEAD-A09AA9 Manual De Instalación página 19

8. Electrical work
8.1. Power supply
8.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
[Fig. 8-1-1] (P.7)
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker
or isolating switch
D Outdoor unit
E Earth (indoor unit)
F Wired remote controller
G Indoor controller board
H Radio frequency interface for RF
thermostat
I Indoor unit
* Affix label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
Applied earth type depends on outdoor unit.
Please refer to connected outdoor unit Installation Manual.
Simultaneous twin system
[Fig. 8-1-3] (P.7)
Only for wired remote controller
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Earth (indoor unit)
F Wired remote controller
G Indoor unit
* Affix label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
Note:
Some units cannot be used in a simultaneous twin system. Refer to the outdoor
unit installation manual for details.
Field electrical wiring
Indoor unit model
Indoor unit power supply (Heater)
Indoor unit power supply (Heater) earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Wired remote controller-Indoor unit
Indoor unit (Heater) L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Wired remote controller-Indoor unit
*1. Max. 50 m [165 ft]
*2. Max. 500 m [1640 ft] (For two wired remote controllers: Max. 200 m [656 ft])
*3. The figures are NOT always against the ground.
S3 terminal has 24 V DC/28 V DC against S2 terminal. However between S3 and S1, these
terminals are not electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national
code.
2. Power supply cords and indoor unit/outdoor unit connecting cables
shall not be lighter than polychloroprene sheathed flexible cord.
(Design 60245 IEC57)
3. Install an earth longer than other cables.
4. Perform wiring in compliance with the safety regulations detailed in
UL60335.
5. Use copper supply wires.
6. Use UL wires rated 300 V or more for the power supply cables and
the indoor unit/outdoor unit connecting cables.
7. Indoor and outdoor connecting wires have polarities. Make sure to
match the terminal number (S1, S2, S3) for correct wirings.
8. Wiring for remote controller cable shall be apart (5 cm, 2 inch or
more) from power source wiring so that it is not influenced by
electric noise from power source wiring.
9. This appliance incorporates an earth connection for functional
purpose only.
10. Use an earth leakage breaker with a sensitivity of less than 30 mA
0.1 s.
Warning:
Never splice the power cable or the indoor-outdoor connection cable, otherwise
it may result in a smoke, a fire or communication failure.
[Fig. 8-1-2] (P.7)
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker
or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting
cables
F Remote controller
G Indoor unit
PEAD
–
–
*1 3 × AWG 14 (polar)
1 × Min. AWG 14
2 × AWG 22
*2
(Non-polar)
*3 –
*3 208/230 V AC
*3 24 V DC/28 V DC
*3 12 V DC
Caution:
Do not use anything other than the correct capacity fuse. Using fuse, wire or
copper wire with too large capacity may cause a risk of malfunction or fire.
Caution:
Take measures to prevent electrical leakage as required.
8.2. Indoor wire connection
Work procedure
1. Remove 2 screws to detach the electric component cover.
2. Route each cable through the wiring intake into the electric component box.
(Procure power cable and in-out connecting cable locally and use wired remote
control cable supplied with the unit.)
3. Securely connect the power cable and the in-out connecting cable and the wired
remote control cable to the terminal blocks.
4. For radio frequency interface
Connect the electric wires securely to the CN105 (RED) of indoor controller board.
Connect the electric wires securely to the corresponding terminals.
5. Secure the cables with clamps inside the electric component box.
6. Attach the electric component cover as it was.
(Tighten the screws of the terminal box cover to the torque of 2.0 ±0.2 N·m.)
• Fix power supply cable and indoor/outdoor cable to control box by using buffer
bushing for tensile force. (PG connection or the like.)
Warning:
• Attach the electrical part cover securely. If it is attached incorrectly, it could
result in a fire, electric shock due to dust, water, etc.
• Use the specified indoor/outdoor unit connecting wire to connect the indoor
and outdoor units and fix the wire to the terminal block securely so that no
stress is applied to the connecting section of the terminal block. Incomplete
connection or fixing of the wire could result in a fire.
[Fig. 8-2-1] (P.8)
A Screw holding cover (1pc)
B Cover
[Fig. 8-2-2] (P.8)
C Terminal box
D Knockout hole
E Remove
[Fig. 8-2-3] (P.8)
F Use PG bushing to keep the weight of the cable and external force from being applied to the
power supply terminal connector. Use a cable tie to secure the cable.
G Power source wiring
H Use ordinary bushing
I Transmission wiring
J Conduit
K Side frame
L Knockout hole (for power source wiring)
M Washer (accessory)
[Fig. 8-2-4] (P.8)
N Terminal block for power source and indoor transmission
O Terminal block for wired remote controller
P Indoor controller board
Q Radio frequency interface is installed on Indoor controller board
R CN105 (RED/5P)
S Wiring for radio frequency interface
• Perform wiring as shown in Fig. 8-2-4. (Procure the cable locally.)
Make sure to use cables of the correct polarity only.
[Fig. 8-2-5] (P.8)
A Indoor terminal block
B Earth wire (green/yellow)
C Indoor/outdoor unit connecting wire 3-core [AWG 14]
D Outdoor terminal block
1 Connecting cable
Cable 3-core [AWG 14], in conformity with Design 60245 IEC 57.
2 Indoor terminal block
3 Outdoor terminal block
4 Always install an earth wire (1-core [AWG 14]) longer than other cables
5 Wired remote controller cable
2
Wire No × size (mm ) : Cable 2C × 0.3
This wire accessory of remote controller
(wire length : 10 m [32 ft], non-polar. Max. 500 m [1640 ft])
6 Wired remote controller
• Connect the terminal blocks as shown in Fig. 8-2-5.
Caution:
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
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