16.0kW
3.8
15
0.56
4.7
20.0kW
5.4
15
0.8
6.7
25.0kW
5.4
15
0.96
6.7
28.0kW
5.4
15
0.96
6.7
IFM
50
220-240
Hz
MCA
MFA
kW
FLA
Voltaje
40.0-45.0kW
12.4
30
1.84
12.5
56.0kW
12.4
30
1.84
15.4
7.1 Power Cord Connection
7.3 Communication Wiring
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.
Figure 7.2 shows the power supply terminal of the 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.
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.
Figure 7.5
Warning
Warning
7. Electrical Wiring
Abbreviations:
MCA: Minimum Circuit Amps
MFA: Maximum Fuse Amps
IFM: Indoor Fan Motor
kW: Rated motor output
FLA: Full Load Amps
Table 7.1
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.
Figure 7.2
Figure 7.3
Figure 7.4
+
Power
cord
Insulation tube
Circular wiring
terminal
:
Copper wire
Proper power wiring connections
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:
$ ?;!&;!;!&?
supply terminal (may cause overheating of wires). See Figure 7.4.
Model
Power
supply
220-240V~50/60Hz
220-240V~50Hz
Communication wire between
indoor and outdoor units
Shield 3×AWG16-AWG20
Communication wire between
indoor unit and wired controller
Shield AWG16-AWG20
Phase
Volt and frequency
1-phase
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.
Figure 7.1
Wire slot
Indoor power
supply
Outdoor power
supply
Indoor unit
Communication wire between
indoor and outdoor units
Grounding line
Grounding line
RCCB
RCCB
35
POWER IN
L
N
7.2 Electrical Wiring Specifications
L
N
Indoor unit
Pull box
Indoor unit
Indoor unit
Indoor unit
Pull box
Pull box
220-240V~50Hz
220-240V~50/60Hz
Power supply
Switch (breakers for
wiring and over current
protection)
All-pole disconnection
device with leakage
protection
Breakers with
current leakage
Table 7.2 Indoor units electrical characteristics
* Please refer to the corresponding wired controller manual for the wired
controller wiring.
*
Field fuses
15A
16-56kW
Power supply
Model