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

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been completed, and carefully checked to be correct.

6.1 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 6.2 shows the power supply terminal of the indoor unit.
L
POWER IN
Figure 6.2
When connecting to the power supply terminal, use the circular wiring terminal
with the insulation casing (see Figure 6.3).
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 sureit
is fixed securely.
If circular wiring terminal with the insulation casing cannot be used, please
make sure that:
‡ Do not connect two power cords with different diameters to the same power
supply terminal (may cause overheating of wires due to loose wiring) (See
Figure 6.4).
+
Figure 6.3
6.2 Electrical Wiring Specifications
220-240V~50Hz
220-240V~ 50/60Hz
Power supply
L1 L2
Breakers with
current leakage
All-pole disconnection
device with leakage
protector
Indoor unit
Wire slot
Indoor unit
Figure 6.1
N
: Copper wire
Circular wiring terminal
Proper power wiring connections
Insulation tube
Power cord
Figure 6.4
Indoor unit Indoor unit
Pull box
Pull box Pull box
Indoor unit Indoor unit
Figure 6.5
Refer to Tables 6.1 and 6.2 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 6.1
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 6.2 Indoor units electrical characteristics
Capacity
Hz
2.2kW
50
2.8kW
50/60
3.6kW
4.5kW
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.
6.3 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.
6.3.1 Communication wiring between the indoor and outdoor units
The indoor and outdoor units communicate via the RS485 serial port.
The communication wiring between the indoor and outdoor units should
connect one unit after another in a daisy chain from the outdoor unit to the
final indoor unit, and the shielded layer must be properly grounded, and a
build-out resistor must be added to the last indoor unit to enhance the
stability of the communication system (see Figure 6.6).
Incorrect wiring such as a star connection or a closed ring will cause
instability of the communication system and system control anomalies.
Use a three core shielded wire (greater than or equal to 0.75 mm
communication wiring between the indoor and outdoor units. Make sure the
wiring is connected correctly. The connecting lead for this communication
wire must come from the master outdoor unit.
(Connect the shielded end of the
Outdoor
shielded wire to the electronic controller
unit
box sheet metal "
(P Q E)
Signalling line between outdoor units
Connecting the shielded layer of the shielded wire
(P Q E)
Indoor and
outdoor units
Communication
wire
Only the last indoor unit requires adding the build-out
P
resistor at P and Q.
Q
(open)
30
2.2-4.5kW
1-phase
220-240V~50Hz
220-240V~50/60Hz
Shielded 3×AWG16-AWG18
Shielded AWG16-AWG20
15A
Power supply
MCA
Volts MFA kW
15 0.037
0.43
220 -240
15
0.43 0.037
15 0.037
0.48
15 0.037
0.48
" ".
" here)
Figure 6.6
IFM
FLA
0.344
0.344
0.344
0.344
2
) for the