DC Slim Duct Type
Indoor Unit
231
Outdoor units are of parallel connection via three lines with polarity. The master unit, central control and all indoor
units are of parallel connection via two lines without polarity.
There are three connecting ways between wired controller and indoor units:
A. One wired controller controls multiple units, i.e. 2-16 indoor units, as shown in the above figure, (1-5 indoor
units). The indoor unit 5 is the wired control master unit and others are the wired control slave units. The remote
control and the master unit (directly connected to the indoor unit of wired control) are connected via three lines
with polarity. Other indoor units and the master unit are connected via three lines with polarity. SW01 on the
master unit of wired control is set to 0 while SW01 on other salve units of wired control are set to 1, 2, 3 and so
on in turn. (Please refer to the code setting A at page 28)
B. One wired controller controls one indoor unit, as shown in the above gure (indoor unit 6-19). The indoor unit
and the wired controller are connected via three lines with polarity.
C.
Two wired controller control one indoor unit, as shown in the gure (indoor unit 20). Either of the wired controller can be set to
be the master wired controller while the other is set to be the auxiliary wired controller. The master wired controller and indoor
units,
and the master and auxiliary wired controller are connected via three lines with polarity.
Note: For DC motor slim low ESP duct, the PCB comes with the terminal blocks. Please be sure to pay attention
to do the wiring according to the identication. The power lines and signal lines go through the metal wire hole
separately with the protective sleeve of the connecting line
Signal Wiring Drawing
I
OOO
I
I
I
I
I
II
II
I I I I
I
I
IIII
Wi
W
W
W
W
W
W
W
W W
W
W
W
W
W
W
W
C
C
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