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Between Indoor and Master Outdoor unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
A
B
3(A) 4(B)
3(A) 4(B)
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
• It is not the point to make ground connection.
- Make sure that terminal number of master and slave outdoor units
are matched. (A-A,B-B)
Example) Connection of communication cable
[BUS type]
- Connection of communication
cable must be installed like
below figure between indoor
unit to outdoor unit.
Example) Connection of power and communication cable (UXA)
Bottom Side
When connecting
Main power lines
/ Ground wire from left side
Gap : Over
50 mm(1.97'')
When connecting
Communication wires
/ Ground wire from left side
Master
GND
12V
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
Master
DRY2
GND
12V
Outdoor Unit
Slave1
DRY2
GND
12V
Outdoor Unit
Slave2
DRY2
GND
12V
Outdoor Unit
[STAR type]
- Abnormal operation can be
caused by communication
defect, when connection of
communication cable is installed
like below figure(STAR type).
Main power
terminal block
Ground wire
Front Side
When connecting
Communication wires
/ Ground wire from
front guide panel
When connecting
Main power lines
/ Ground wire from
front guide panel
Main power line
connection
Main power
terminal block
Insulation sleeves
attachments
Ground wire
CAUTION
!
It should be wiring power cables or communication cables to avoid
interference with the oil level sensor. Otherwise, That oil level sensor
would be operated abnormally.
Example) Connection of power and communication cable (UXB)
Bottom Side
Main power
terminal block
Ground wire
When connecting
Main power lines
/ Ground wire from left side
Gap : Over
50 mm(1.97'')
When connecting
Communication wires
/ Ground wire from left side
Front Side
Main power
terminal block
Ground wire
Fix firmly with cable tie
or clamp cord not to be
displaced
Main power
terminal block
Ground wire
Fix firmly with cable tie or
Gap : Over
clamp cord not to be displaced
50 mm(1.97'')
Communication/Ground
wire connection
Ground wire
ODU-IDU
Communication
cable
ODU-ODU
Communication
cable
When connecting
Communication wires
/ Ground wire from
front guide panel
Gap : Over
50 mm(1.97'')
When connecting
Main power lines
/ Ground wire from
front guide panel
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