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6.3.2 Communication wiring between the indoor unit and wired
controller
The wired controller and the indoor unit can be connected in different manners,
depending on the forms of communication.
1) For a bidirectional communication mode:
Use 1 wired controller to control 1 indoor unit or 2 wired controllers (one
master and one slave controller) to control 1 indoor unit (see Figure 6.7);
Use 1 wired controller to control multiple indoor units or 2 wired controllers
(one master and one slave controller) to control multiple indoor units
(see Figure 6.8);
Indoor unit 1
Wired controller 1
Master wired controller
Indoor unit 1
P Q E
X1 X2
Wired controller 1
Master wired controller
2) For a unidirectional communication mode:
Use 1 wired controller to control 1 indoor unit (see Figure 6.9).
Indoor unit 1
For the specific connection method, refer to the instructions in the
corresponding wired controller manual to carry out the wiring and connections.
The X1/X2, D1/D2 ports on the sides of the main control board and the
unidirectional communication port (display board side) are for different
types of wired controllers (see Figure 6.10).
Use the connecting wires (from the accessories) to connect the D1/D2
terminals.
Wired controller 2
Slave wired controller
Figure 6.7
Indoor unit n (n<=16)
Indoor unit 2
P Q E
X1 X2
Wired controller 2
Slave wired controller
Figure 6.8
A
B
C
D
Display board
A
B
C
D
Wired controller 1
Figure 6.9
X2
X1
6.4 Handling the Electrical Wiring Connection Points
Once the wiring and connections are done, use tie straps to secure the
wiring properly so that the connection joint cannot be pulled apart by
external force. The connection wiring must be straight out so that the cover
of the electrical box is level and can be closed tightly.
Use professional insulation and sealing materials to seal and protect the
perforated wires. Poor sealing may lead to condensation, and entry of small
animals and insects that may cause short circuits in parts of the electrical
system, causing the system to fail.
6.5 Panel Wiring
Refer to the panel installation instructions in 3.3.4 to connect the terminals of the
display board and the swing motor.
7. On-site Configuration
7.1 Capacity Settings
Set up the PCB DIP switch on the indoor electric control box to cater to different
uses. Once the settings are done, make sure you cut off the main power switch
P Q E
X1 X2
again, and then switch the power on. If the power is not cut off and switched on
again, the settings will not be executed.
ENC1 Settings for Capacity DIP Switch:
DIP Switch Code
Caution
•
The capacity DIP switches have been configured before delivery. Only a
professional maintenance personnel should change these settings.
7.2 Address Settings
When this indoor unit is connected to the outdoor unit, the outdoor unit will
automatically allocate the address to the indoor unit.
Alternatively, you may use the controller to manually set the address.
The addresses of any two indoor units in the same system cannot be the
same.
The network address and the indoor unit address are the same, and does
not have to be configured separately.
Once the address settings are completed, mark the address of each indoor
unit to facilitate after-sales maintenance.
The centralized control of the indoor unit is completed on the outdoor unit.
For details, refer to the manual on the outdoor unit.
Caution
•
Once the centralized control function for the indoor unit has been
completed on the outdoor unit, the DIP switch on main control panel of
the outdoor unit must be set to auto addressing; otherwise, the indoor
unit in the system are not controlled by the centralized controller.
11
To outdoor/
intdoor unit
COMM. BUS
To wired
controller
Wired
COMM. BUS
controller
D2
D1
Display board
P
E
Q
XS6
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
1 2
1 2
1 2
1 2
1 2
1 2
SW6
SW5
SW4
SW3
SW2
SW1 SW7
Main control panel
Figure 6.10
POWER_S
ENC1
0
1
2
3
A
B
C
D
XP4 XS4
XP6
ON
POWER_S
ON
1 2
ENC1
Capacity
2200W
2800W
3600W
4500W
V.2
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