Haier AD322MMAHA Operation & Installation Manual page 29

Electrical Wiring
Signal Wiring Drawing
Main Unit of Outdoor
Unit
P Q A B C
Indoor Unit 1
P Q A B C
Indoor Unit 6
P Q A B C
A B C
Indoor Unit 11
P Q A B C
A B C
Indoor Unit 16
P Q A B C
A B C
P Q
central controller
Outdoor units are of parallel connection via three lines with polarity. The main unit, central control
and all indoor units are of parallel connection via two lines without polarity.
There are three connecting ways between line control and indoor units:
A. One line control 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 line-controlled main unit and others are the
line-controlled sub units. The remoter control and the main unit (directly connected to the indoor
unit of line control) are connected via three lines with polarity. Other indoor units and the main
unit are connected via two lines with polarity.SW01 on the main unit of line control is set to 0
while SW01 on other sub units of line control are set to 1, 2, 3 and so on in turn. (Please refer
to the code setting A at page 25)
B. One line control controls one indoor unit, as shown in the above figure(indoor unit 6-19). The
indoor unit and the line control are connected via three lines with polarity.
C. Two line controls control one indoor unit, as shown in the figure (indoor unit 20). Either of the
line controls can be set to be the master line control while the other is set to be the auxiliary
line control. The master line control and indoor units, and the master and auxiliary line controls
are connected via three lines with polarity.
When the indoor units are controlled by the remote control, switch over the modes by Switching
Mode of Line-Controlled Main Unit/ Line-Controlled Sub Units/ Remote-Controlled Types. The
signal terminals neednít to be equipped with wires and connected to the line control.
Sub Unit 1 of Outdoor Sub Unit 2 of Outdoor
Unit Unit
A B C
Indoor Unit 2 Indoor Unit 3
P Q A B C
Indoor Unit 7 Indoor Unit 8
P Q A B C
A B C
wired wired
controller controller
Indoor Unit 12 Indoor Unit 13
P Q A B C
A B C
wired wired
controller controller
Indoor Unit 17 Indoor Unit 18
P Q A B C
A B C
wired wired
controller controller
Sub Unit 3 of Outdoor
Unit
A B C A B C
Communicating lines between outdoor units with polarity
Indoor Unit 4
P Q A B C P Q A B C
Indoor Unit 9
P Q A B C P Q A B C
A B C A B C
wired
controller
Indoor Unit 14
P Q A B C P Q A B C
A B C A B C
wired
controller
Indoor Unit 19
P Q A B C P Q A B C
A B C A B C
wired
controller
27
Indoor Unit 5
P Q A B C
A B C
wired controller
wired controller
control line, polar
Indoor Unit 10
P Q A B C
wired
A B C
controller
wired
controller
Indoor Unit 15
P Q A B C
wired
controller
A B C
wired
controller
Indoor Unit 20
P Q A B C
wired
controller
A B C A B C
wired wired
controller controller