Carrier XCT7 Installations- Und Bedienungsanleitung Seite 24

Electrical Wiring
Supply Wiring Drawing
outdoor 1
indoor 1 (AC)
indoor 6
wired
controller
indoor 11
wired
controller
indoor 16
wired
controller
Outdoor units have parallel connections via three lines with polarity. The main unit, central control, and all indoor units have parallel
connections via two lines without polarity.
There are three connecting ways between the line control and indoor units:
A. One wired controller controls multiple units, that is, 2–16 indoor units, as shown in the above figure (indoor units 1–5).
Indoor unit 5 is the main unit and others are the sub units. The wired controller and the main unit 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 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
on page 20).
B. One wired controller controls one indoor unit, as shown in the above figure (indoor units 6–19). The indoor unit and the
wired controller are connected via three lines with polarity.
C. Two wired controllers control one indoor unit, as shown in the figure (indoor unit 20). Either of the controllers can be set to
be the master controller while the other is set to be the auxiliary controller. The master wired controller and indoor units,
and the master and auxiliary wired controller are connected via three lines with polarity.
outdoor 2 outdoor 3
communication wire with polarity
indoor 2 (AC) indoor 3 (DC)
indoor 7 indoor 8
wired
controller
indoor 12 indoor 13
wired
controller
indoor 17 indoor 18
wired
controller
control wire for wired controller
with polarity
indoor 4 (DC) indoor 5
indoor 9 indoor 10
wired wired
controller controller
indoor 14 indoor 15
wired wired
controller
controller
indoor 19 indoor 20
wired
wired
controller
controller
17
wired
controller
wired
controller
wired
controller
wired wired
controller controller