Carrier XCT7 Installations- Und Bedienungsanleitung Seite 18

Wired Controller Wiring Instruction
There are four methods to connect wired controller to the indoor units:
1. Group control shown as Figure A and D: One wired controller can control up to 16 indoor units. 3 pieces of polar
wire must be used to connect the wired controller and the master unit (the indoor unit is connected with wire con-
troller directly). And other units connect to the master unit through 2 pieces or 3 pieces of polar wire depending on
the indoor units. Please do follow the corresponding indoor unit installation manual's instructions.
2. Individual control as shown Figure B: One wired controller controls one indoor unit, and the indoor unit connects
to the wired controller through 3 pieces of polar wire.
3. Two wired controllers control one indoor unit as shown Figure C. Any one of wired controllers can be set as the
master wired controller and the other as the slave wired controller. The connection between Master and slave
wired controllers as well as wired controllers connecting the indoor units, each requires 3 pieces of polar wire.
Communication wiring
Communication wiring length (m/ft)
≥100m/328ft and <200m/656ft
≥200m/656ft and <300m/984ft
Note:
• One side of the shielded sheet of communication wire must be earthed.
• The total length of communication wire cannot exceed 300 meters.
< 100m/328ft
Dimensions of wiring
0.3mm2x3-core shielded wire (22AWG,3wire)
0.5mm2x 3-core shielded wire (20AWG,3wire)
0.75mm2x3-core shielded wire (18AWG,3wire)
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