Carrier 40VCW327FQEE User Manual page 28

INSTALLATION
There are four methods to connect wired controller to the indoor units:
1. Group control shown as Figure A : One wired controller can control up to 16 indoor units.
3 pieces of polarwire must be used to connect the wired controller and the master unit (the
indoor unit connected with wirecontroller directly). And other units connect to the master
unit through 2 pieces or 3 pieces of polar wiredepending on the indoor units, please do
follow the corresponding indoor unit installation manual'sinstruction, For AC motor units, pls
connect with B & C 2 wires; for DC motor units, pls connect with A & B &C 3 wires.
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. Either 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 to indoor units all requires the 3 pieces of polar wire.
Communication wiring length(m/ft)
<100m/328ft
≥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.
●
Communication wiring
0.3m
0.5m
0.75m
26
Dimensions of wiring
2
x3-core shielded wire
(22AWG,3wire)
2
x3-core shielded wire
(20AWG,3wire)
2
x3-core shielded wire
(18AWG,3wire)
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