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5.1 Air-conditioning unit wiring
Capacity
Power Supply
(kW)
Single-phase
10
220V-240V～50Hz
Three-phase
380V～50Hz/60Hz
14/16
Three-phase
380V～50Hz/60Hz
22
If needed, the user can purchase a centralized controller, as shown in the dashed box. For the specific method of
installation, please contact your local supplier.
Power supply
Air-conditioning unit
Centralized
controller
CCM
Indoor unit
P Q
Three-core
shielded cable
to centralized
Three-core
controller
shielded
cable
P
Q E
X
Y
E
Air-conditioning unit
Fig. 5-2 Electrical Wiring of Single-phase Air-conditioning Units
NOTE
•
When the signal line uses a two-core shielded cable, the shielding net shall be connected to "E" of the
terminal block. When the signal line uses a three-core shielded cable, the shielding net shall be connected
to the ground.
•
Never connect the power line (strong current) to the terminal block of the signal line (weak current).
Otherwise, the power board will be burnt out.
5. Electrical Wiring
Table 5-1 Air-conditioning Unit Wiring
Power Line
(mm²)
3×6
5×2.5
5×6
Power supply
Switch / power supply
Power line of
air-conditioning unit
Indoor unit
Fig. 5-1 Wiring and Control
L N
E
Y/G
Single-phase power supply
220V-50Hz/60Hz
L N
Y/G
Single-phase power supply
220V-50Hz/60Hz
Breaker/
Signal Wire of Indoor/Air-conditioning Units (mm)
Fuse (A)
40/35
three-core shielded cable 3×1.0 (two-core shielded cable 2×1.0)
three-core shielded cable 3×1.0 (two-core shielded cable 2×1.0)
25/20
35/30
three-core shielded cable 3×1.0 (two-core shielded cable 2×1.0)
Switch / power supply
Power line of indoor unit
Indoor unit
N
L1 L2 L3
Three-phase power supply 380V3N-50Hz/60Hz
Fig. 5-3 Electrical Wiring of Three-phase Air-conditioning Units
12
(Signal Wire of Weak Current)
Junction box
Indoor unit
Indoor unit
P
Q E
Single-phase power supply
220V-50Hz/60Hz
Three-core shielded
cable to centralized
Three-core
shielded
controller
cable
E
P
Q
Y/G
Air-conditioning unit
L
N
Y/G
X
Y
E
V.1
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