LG PAHCMR000 - Page 23

23
Installation
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Solutions Overview
AHU COMMUNICATIONS KIT INSTALLATION
Return Air Temperature Control
DDC Control by Modbus : Fixed T
e
+ T
r
or T
Room
The DDC controls return air temperature (T
r
) or room air temperature (T
Room
) by transferring Modbus signal to the AHU
Communication Kit for Return air control. To control room air, the LG wired controller can be purchased optionally. A
fixed target evaporator or condensing temperature (T
e
) can be changed in MULTI V and Single Zone outdoor function code setting.
DX
Coil
AHU
Room
AHU Controller
PAHCMR000
Outdoor Unit
DDC
(Field Supply)
Remote
Controller
(optional)
T
Room
.
LG Central
Controller
(Optional)
Modbus
T
e
T
r
MULTI V lanoitpOlanoitpOVEE
Single Zone lanoitpOlanoitpOderiuqeR toN
Function List Modbus Comm. type (DDC)
1
Control
OOOffO/nO gnitarepO
OOOedoM noitarepO
OOOerutarepmeT riA nruteR
XXXerutarepmeT riA egrahcsiD
XXXffO/nO lamrehT decroF
XXXlortnoC yticapaC
OXXpotS ycnegremE
Monitor
OOOffO/nO gnitarepO
OOOedoM noitarepO
OOOerutarepmeT riA nruteR
XXXerutarepmeT riA egrahcsiD
XOOsutats tsorfeD
OOOmralA rorrE
XOOffO/nO rosserpmoC
Notes
O = Applied; X = Not applied
1. LG Central controller is based on AC Smart IV and ACP IV
Expansion Valve Wired Remote Controller Central Controller
LG Central Controller LG Remote Controller
Required Items
Function List