Electrical Work; Power Supply - Mitsubishi Electric Mr.SLIM PEAD-A24AA Manuel D'installation

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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] (P.5)
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 cords
F Remote controller
G Indoor unit
* Affix a label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
Simultaneous twin/triple/four system
[Fig. 8-2] (P.5)
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 cords
F Remote controller
G Indoor unit
* Affix a label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
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
Remote controller-Indoor unit
*1
Indoor unit (Heater) L-N
*2
Indoor unit-Outdoor unit S1-S2
*2
Indoor unit-Outdoor unit S2-S3
*2
Remote controller-Indoor unit
*2
*1. The 10 m [32 ft] wire is attached in the remote controller accessory. Max. 500 m [1640 ft]
*2. The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals
are not electrically insulataed 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 cords
shall not be lighter than polychloroprene sheathed flexible cord.
(Design 245 IEC57)
3. Install an earth longer than other cables.
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using fuse,
wire or copper wire with too large capacity may cause a risk of malfunction or fire.
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. (Pro-
cure power cable and in-out connecting cable locally and use remote control cable
supplied with the unit.)
3.Securely connect the power cable and the in-out connecting cable and the remote
control cable to the terminal blocks.
4.Secure the cables with clamps inside the electric component box.
5.Attach the electric component cover as it was.
• 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.6)
A Screw holding cover (1pc)
B Cover
[Fig. 8-2-2] (P.6)
C Terminal box
D Knockout hole
E Remove
18
All manuals and user guides at all-guides.com
• Perform wiring as shown in the diagram to the lower left. (Procure the cable locally.)
PEAD
• Connect the terminal blocks as shown in the diagram below.
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
3 × 1.5 (polar)
• After tightening, pull the wires lightly to confirm that they do not move.
1 × Min. 1.5
2 × 0.3 (Non-polar)
8.3. Remote controller (wired remote controller)
8.3.1. For wired remote controller
230 V AC
1) Installing procedures
24 V DC
(1) Select an installing position for the remote controller.
The temperature sensors are located on both remote controller and indoor unit.
14 V DC
(2) Seal the service entrance for the remote controller cord with putty to prevent pos-
B-1. To lead the remote controller cord from the back of the controller:
B-2. To run the remote controller cord through the upper portion:
(3) For direct installation on the wall
2) Connecting procedures
1 Connect the remote controller cord to the terminal block.
2 Set the dip switch No.1 shown below when using two remote controller's for the
3) Function selection of remote controller
If two remote controllers are connected, set one to "Main" and the other to "Sub". For
setting procedures, refer to "Function selection of remote controller" in the operation
manual for the indoor unit.
[Fig. 8-2-3] (P.6)
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.6)
N Terminal block for power source and indoor transmission
O Terminal block for remote controller
Make sure to use cables of the correct polarity only.
[Fig. 8-3] (P.7)
A Indoor terminal block
B Earth wire (green/yellow)
C Indoor/outdoor unit connecting wire 3-core 1.5 mm
D Outdoor terminal block
1 Connecting cable
2
Cable 3-core 1.5 mm
[AWG 16], in conformity with Design 245 IEC 57.
2 Indoor terminal block
3 Outdoor terminal block
4 Always install an earth wire (1-core 1.5 mm
2
5 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
Caution:
Procure the following parts locally:
Two piece switch box
Thin copper conduit tube
Lock nuts and bushings
[Fig. 8-4] (P.7)
A Remote controller profile
B Required clearances surrounding the remote controller
C Installation pitch
sible invasion of dew drops, water, cockroaches or worms.
[Fig. 8-5] (P.7)
A For installation in the switch box:
B For direct installation on the wall select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run the remote
controller cord from the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out upper case, then seal the cut-out notch
with putty similarly as above.
C Wall
G Switch box
D Conduit
H Remote controller cord
E Lock nut
I Seal with putty
F Bushing
J Wood screw
[Fig. 8-6] (P.7)
A To the terminal block on the indoor unit
B TB6 (No polarity)
same group.
2
[AWG 16] or more
[AWG 16]) longer than other cables

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