Midea MI2-45Q4DHN1 - Power Cord Connection; Electrical Wiring Specifications

FLA: Full Load Amps
Abbreviations:
MCA: Minimum Circuit Amps
kW: Rated motor output
Table 6.2 Indoor units electrical characteristics
MFA: Maximum Fuse Amps
IFM: Indoor Fan Motor
Table 6.1
Capacity
IFM
Hz Volts
MCA
MFA kW FLA
2.8kW
0.41
15 0.08 0.33
0.41
15 0.08 0.33
4.5kW
0.56
15 0.08 0.45
5.6kW
0.56
15 0.08 0.45
7.1kW
0.56
15 0.08 0.45
8.0kW
0.76
15 0.08 0.61
0.88
15 0.17 0.70
10.0kW
1.00
15 0.17 0.80
11.2kW
1.00
15 0.17 0.80
14.0kW
1.20
15 0.17 0.96
Power supply
3.6kW
9.0kW
Power supply
Breakers with
current leakage
All-pole disconnection
device with leakage
protector
L N
Pull box
Indoor unit Indoor unit Indoor unit
Pull boxPull box
220-240V~50/60Hz
: Copper wire
Proper power wiring connections
POWER IN
L
N
Wire slot
Indoor power
supply
Outdoor power
supply
Indoor unit
Communication wire between
indoor and outdoor units
Grounding line
Grounding line
RCCB
RCCB
Figure 6.1
Figure 6.2
4.6 erugiF3.6 erugiF
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.
When connecting to the power supply terminal, use the circular wiring
terminal with the insulation casing (see Figure 6.3).
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).
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.
Figure 6.2 shows the power supply terminal of the 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.
+
Power cord
Insulation tube
Circular wiring
terminal
Figure 6.5
6.2 Electrical Wiring Specifications
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.
11
Model 2.8-14.0 kW
Power
supply
220-240V~50Hz
220-240V~50/60Hz
Communication wire between
indoor and outdoor units
Shielded 3×AWG16-AWG18
Communication wire between
indoor unit and wired controller
AWG16-AWG20
Field fuses 15A
Phase
Volt and frequency
1-phase
220-240V~50Hz
Indoor unit
Indoor unit
Pull box
Shielded
*
*
Please refer to the corresponding wired controller manual for the wired
controller wiring.
50/60
50
220-240V
1. Select the wire diameters( minimum value) individually for each
unit based on the table 6.3.
2. Maximum allowable voltage range variation between phases is
2%.
3. Select circuit breaker that having a contact separation in all poles
not less than 3 mm providing full disconnection，where MFA is
used to select the current circuit breakers and residual current
operation breakers.
Table 6.3
Nominal cross-sectional area (mm
2
)
>3
>6
>10
>16
>25
>32
>50
and
and
and
and
and
and
and
≤3
≤6
≤10
≤16
≤25
≤32
≤50
≤63
0.75
1
1.5
2.5
4
6
10
and
and
and
and
and
and
and
1
1.5
2.5
4
6
10
16
0.5 and 0.75
Flexible cords Cable for fixed wiring
4
10
to
1.5
4
to
1
2.5
to
1
2.5
to
1
2.5
to
2.5
6
to
6
16
to
10
25
to
Rated current
of appliance（A）