Electrical Wiring; Power Cord Connection; Electrical Connection - mundoclima MVD DC2 Manual De Instalación Y Usuario

7. Electrical Wiring

Warning
All the supplied parts, materials and electrical works must comply with
local regulations.
Use only copper wires.
Use a dedicated power supply for the air-conditioners. The power
voltage must be in line with the rated voltage.
The electrical wiring works must be carried out by a professional
technician, and must comply with the labels stated in the circuit diagram.
Before the electrical connection works are carried out, turn off the
power supply to prevent injuries caused by electric shock.
The external power supply circuit of the air conditioner must include
an earth line, and the earth line of the power cord connecting to the
indoor unit must be securely connected to the earth line of the
external power supply.
Leakage protective devices must be configured according to the local
technical standards and requirements for electrical and electronic devices.
The fixed wiring connected must be equipped with an all-pole
disconnection device with a minimum 3 mm contact separation.
The distance between the power cord and signalling line must be at
least 300 mm to prevent the occurrences of electrical interference,
malfunction or damage to electrical components. At the same time,
these line must not come in contact with the piping and valves.
Choose electrical wiring that conforms to the corresponding electrical
requirements.
Connect to the power supply only after all the wiring and connection
works have been completed, and carefully checked to be correct.

7.1 Power Cord Connection

Use a dedicated power supply for the indoor unit that is different from
the power supply for the outdoor unit.
Use the same power supply, circuit breaker and leakage protective
device for the indoor units connected to the same outdoor unit.
Outdoor power
supply
RCCB
Grounding line
Grounding line
Indoor power
supply
RCCB
Communication wire between
indoor and outdoor units
Figure 7.2 shows the power supply terminal of the indoor unit.
When connecting to the power supply terminal, use the circular wiring terminal
with the insulation casing (see Figure 7.3).
Use power cord that conforms to the specifications and connect the power cord
firmly. To prevent the cord from being pulled out by external force, make sure it
is fixed securely.
If circular wiring terminal with the insulation casing cannot be used, please
make sure that:
‡ 'R QRW FRQQHFW WZR SRZHU FRUGV ZLWK GLIIHUHQW GLDPHWHUV WR WKH VDPH SRZHU
supply terminal (may cause overheating of wires). See Figure 7.4.
+
Figure 7.3
Wire slot
Indoor unit
Figure 7.1
L N
POWER IN
Figure 7.2
: Copper wire
Circular wiring
terminal
Proper power wiring connections
Insulation tube
Power
cord
Figure 7.4
7.2 Electrical Wiring Specifications
220-240V~50Hz
220-240V~50/60Hz
Power supply
Breakers with
L N
current leakage
All-pole disconnection
device with leakage
protection
Indoor unit
Refer to Tables 7.1 and 7.2 for the specifications of the power cord and
communication wire. A wiring capacity that is too small will cause the
electrical wiring to become too hot, and lead to accidents when the unit
burns and becomes damaged.
Table 7.1
Model
Phase
Power
supply
Volt and frequency
Communication wire between
indoor and outdoor units
Communication wire between
indoor unit and wired controller
Field fuses
* Please refer to the corresponding wired controller manual for the wired
controller wiring.
Table 7.2 Indoor units electrical characteristics
Model
Hz
16.0kW
20.0kW
25.0kW
50
28.0kW
40.0-45.0kW
56.0kW
Abbreviations:
MCA: Minimum Circuit Amps
MFA: Maximum Fuse Amps
IFM: Indoor Fan Motor
kW: Rated motor output
FLA: Full Load Amps
Warning
Refer to local laws and regulations when deciding on the dimensions for the
power cords and wiring. Get a professional to select and install the wiring.
7.3 Communication Wiring
Use only shielded wires for the communication wiring. Any other type of wires
may produce a signal interference that will cause the units to malfunction.
Do not carry out electrical works like welding with the power on.
All shielded wiring in the network are interconnected, and will
eventually connect to earth at the same point "
Do not bind the refrigerant piping, power cords and communication
wiring together. When the power cord and communication wiring are
parallel, the distance between the two lines must be 300 mm or more
in order to prevent signal source interference.
Communication wiring must not form a closed loop.
35
Switch (breakers for
wiring and over current
Indoor unit
protection)
Pull box
Pull box Pull box
Indoor unit Indoor unit
Figure 7.5
16-56kW
1-phase
220-240V~50Hz
220-240V~50/60Hz
Shield 3×AWG16-AWG20
Shield AWG16-AWG20
*
15A
Power supply
Voltaje
MCA MFA kW
4.7 15 0.56
6.7 15 0.8
6.7 15 0.96
220-240
6.7 15 0.96
12.5 30 1.84
15.4 30 1.84
" .
IFM
FLA
3.8
5.4
5.4
5.4
12.4
12.4