12
X1
X2
CN18
SW1 SW2 SW3 SW4 SW5 SW6 SW7
ENC1
POWER_S
CN15(
WHITE)
To wired controller
comm. bus
Indoor Main Control Board
Wired
controller
S6
X
P6
X
Display Board
CN9
To wired
controller
comm.bus
D1 D2
Indoor unit 1
Display board
A
B
C
D
A
B
C
D
Wired controller 1
X1 X2
Indoor unit 1
Wired controller 2
X2
X1
D2
D1
Wired controller 1
X2
X1
D2
D1
X1 X2
Indoor unit 2
X1 X2
Indoor unit n
(n<=16)
D1
D2
D1
D2
D1
D2
X1 X2
Indoor unit 1
Wired controller 2
X1
X2
Wired controller 1
X1
X2
(P Q E)
(P Q E)
6.4 Handling the Electrical Wiring Connection Points
6.5 Panel Wiring
Only the last indoor unit requires adding
the build-out resistor at P and Q.
(open)
Indoor and
outdoor units
Communication wire
Connecting the shielded
layer of the shielded wire
(Connect the shielded end of the shielded wire to the
electronic controller box sheet metal " " here)
Signalling line
between outdoor units
Outdoor
unit
P
Q
Figure 6.6
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 (accessory 15) to connect the D1/D2 ports.
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.
Refer to the panel instructions to connect the docking terminals of the
display board and the swing motor.
Use the protection casing (accessory 14) to cover and protect the
terminal, and bind it firmly with tightening band (accessory 11). See
Figure 6.11.
6.3.2 Communication wiring between the indoor unit and wired
controller
Figure 6.7
Figure 6.8
2) For a unidirectional communication mode:
Use 1 wired controller to control 1 indoor unit (see Figure 6.9).
Figure 6.9
Figure 6.10
Master wired controller
Slave wired controller
r
e
ll
o
rt
n
o
c
d
e
ri
w
e
v
a
l
S
r
e
ll
o
rt
n
o
c
d
e
ri
w
r
e
t
s
a
M
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);
Build-out resistor
A
B
C
D
For the specific connection method, refer to the instructions in the
corresponding wired controller manual to carry out the wiring and
connections.
Caution
•
Protecting bush
Tightening band
Figure 6.11
V.2