Material And Size Of The Piping; Electrical Wiring; Power Cord Connection - mundoclima MVD DC2 Manual De Instalación Y Usuario

5.5 Material and Size of the Piping

Table 5.1
Pipe Material
Model(kW)
Size(mm)
Note
• Refer to the air conditioner pipeline connection method for
the installation.

6. 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.

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
Copper Pipe for Air Conditioner
≤4.5 ≥5.6
Φ12.7 Φ15.9
Φ6.4 Φ9.5
Wire slot
Indoor unit
Figure 6.1
Figure 6.2 shows the power supply terminal of the indoor unit.
CN16
L N
(2.2/2.8kW )
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 sure it 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).
+
(3.6~9.0kW )
+
(2.2/2.8kW )
F g i u e r 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
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.
24
L N
XT1
(3.6~9.0kW )
Figure 6.2
Tongue shape terminal
Insulation tube
Power cord
Circular wiring
terminal
Proper power wiring connections
Insulation tube
Power cord
F g i u e r
Switch (breakers for
wiring and over current
Indoor unit
protection)
Pull box
Pull box Pull box
Indoor unit Indoor unit
2.2~9.0kW
1-phase
220-240V~50Hz
220-240V~50/60Hz
Shielded 3*AWG16-AWG18
Shielded AWG16-AWG20
*
15A
Y/G
: Copper wire
6 4 .