LG PAHCNM000 - Outdoor Unit Communication Line Connection; Cautions on Connecting the EEV Module (Communication Module) with Outdoor Unit; Capacity Control Communication Cable Connection

16
OUTDOOR UNIT COMMUNICATION LINE CONNECTION
ENGLISH
Connect
CEN B, CEN A
Connect
CEN B, CEN A
Connect
CEN B, CEN A
Outdoor
Unit #1
<Main module>
Outdoor
Unit #2
CH3 A+
CH3 B-
Outdoor
Unit #3
CAUTION
!
• The AHU Control Kit can control the temperature of the supply air by connecting to up to
three outdoor units. When connecting outdoor units, the communication addresses should
be set from 1 to 3, sequentially.
Otherwise, the supply air temperature control function may not work properly.
• Make sure the polarity of the power supply connector is correct when connecting the
communication cable between the Control Kit and outdoor unit.
Capacity Control Communication Cable Connection
- In order to control the SA temperature in the control kit, the central control communication line
must be additionally connected. Please refer to the wiring diagram and the figure below for
details.
- For models without a central control communication modem, a central control communication
modem must be installed separately to control the supplied air's temperature.
OUTDOOR UNIT COMMUNICATION LINE
CONNECTION
Cautions on connecting the EEV module (communication
module) with outdoor unit
- The Control Kit comes mounted with three EEV
modules, and each EEV module can be connected to
one Expansion Kit.
If additional EEV modules are required depending on
the number of outdoor units, they must be purchased
separately and installed.
- Make sure the communication cables of each outdoor
unit and pipe thermistor wires of Expansion Kit are
not mixed when connecting the outdoor units.
CH2 A+
IDU B
IDU A
CH2 B-