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Installation of the outdoor unit
Note:
When connecting power line to power supply terminal, please pay attention to the following
items:
1. Do not connect the power line with different dimensions to the same connection wire end.
Improper contact will cause heat generation.
2. Do not connect the power line with different dimensions to the same grounding wire end.
Improper contact will affect protection.
3. Keep a proper distance between the communication wire and the power line. Otherwise,
abnormal communication will occur because of disturbance.
4. Do not connect the power line to the connecting end of communication wire. Incorrect
connection will cause damage of connected unit.
Wiring example diagram:
Outdoor unit
Terminal
Indoor unit
Terminal
P Q
L
N
To Power Supply
(1PH,220-230V~,50Hz)
A1
W:White
B:Black R:Red
Explanation on the communication wire connections:
1.If the communication wires are properly connected, when the indoor units and outdoor unit power
on, the communication indication LED (Red) on the outdoor PCB will flash in sequence, also the
LED (Red) on indoor PCB will flash too.
2.If the communication indication LEDs don't flash, that shows the communication wires are not
properly connected. Please check the P and Q connection and check the wires to see whether they
have been destroyed or not properly connected.
Note:
1.The power supply of indoor units can be connected together to the same power source, and also
they can be connected to different or separated power sources.
2.If the system only connect one indoor unit, please connect the indoor unit to A1 or B1 terminals
according to the pipe systems.
3.If the system connect two indoor units, please connect the indoor units to A1 and B1 terminals
4.If the system connect three indoor units, please connect the indoor units to the right terminals
according to the combination type.
R
S
T
N
To Power Supply
(3N~,380-400V,50Hz)
Indoor unit
Terminal
P Q
L
N
To Power Supply
(1PH,220-230V~,50Hz)
A2
BR:Brown
Y/G:Yellow/Green
A1
A2
B1
P
Q
P
Q
P
Indoor unit
Terminal
P Q
L
N
To Power Supply
(1PH,220-230V~,50Hz)
B1
23
Electric wiring
B2
Outdoor unit
Q
P
Q
Terminal
Indoor unit
Terminal
P Q
L
N
To Power Supply
(1PH,220-230V~,50Hz)
B2
outdoor side
indoor side
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