External Connection Diagram; Return Air Temperature Control - LG PAHCMR000 Installation Manual

EXTERNAL CONNECTION DIAGRAM

Return air temperature control

Example 1) MULTI V + EEV Kit + LG Control/DDC (Modbus RTU)
Air Handling Unit
(Field supply)
Local AHU
Controller
(Out of LG scope)
Refrigerant Piping (Field Supply)
Wire & Thermistor (LG Supply)
Wire (Field Supply)
AI/DI/DO Signal(Field Supply)
NOTE
• The type of power supply of outdoor unit can vary depending on the outdoor model.
• Please make wiring between LG controller and outdoor unit with the same polarity.
• LG controller can be optionally applied with DDC.
EEV Kit
Liquid pipe
Gas pipe
Pipe out (Gas) Thermistor
Pipe in (Liquid) Thermistor
Return (Room) Thermistor
DX
Coil
Wired Remote
Comm. module
Controller
12V
SIG
GND
Modbus
Communication
A+ CH1
B- CH1
EXTERNAL CONNECTION DIAGRAM
Central Controller
ACP : CH 1 ~ CH 4
AC SMART : CH 2
RI1 G RI3 G RI4 G
CH 2 A+
CH 2 B-
L
Adapter
EEV N
Indoor unit
4(B) B)
3(A)
CN_REMO
N(L2)
L(L1 )
Indoor unit
4(B)
3(A)
CN_REMO N(L2)
L(L1 )
31
MULTI V
Outdoor unit
INT B
INT A
R S T N
Fuse
R S T N
Power Supply
1)
Power Supply
L N