LG PAHCMS000 Installation Manual page 34

AHU COMMUNICATIONS KIT INSTALLATION
External Connection Diagrams
Single Zone + DDC (Contact Signal)
Air Handling Unit
(field supply)
Local AHU
Controller
(Field Supplied)
RefrigerantPiping (Field Supply)
Wire&Thermistor(LG Supply)
Wire (Field Supply)
AI/DI/DO Signal(Field Supply)
Note :
1. The type of power supply of outdoor unit can vary depending on the outdoor model.
2. Please make wiring between LG controller and outdoor unit with the same polarity.
3. LG controller can be optionally applied with DDC.
34
Liquid pipe
Gas pipe
Pipe out (Gas) Thermistor
Pipe in (Liquid) Thermistor
DX
Coil
Discharge Thermistor
Central Controller
ACP : CH5
AC SMART : CH1
A+ B-
Main
module
ODU Capacity
Universal
Control(0~10V)
Input
On/Off, Cool/Heat,
Digital
Emer.stop
Input
On/Off, Defrost, Alarm,
Digital
Comp. status
Output
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
PI 485
PMNFP14A1
BUS -A
BUS -B
CN_PWR
CN_OUT
Comm.
module
A+ B- A+ B-
RI2 G
CH3 CH2
Adapter
L
N
EEV
Single Zone
Outdoor unit
CN_CP(N)
CN_CP(L)
CN_CENTRAL
L N
Power Supply
RI3 G RI4 G
SINGLE N
SINGLE S
12V
SIG
GND
Remote
Controller