LG PAHCMS000 - Page 25

25
Installation
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AHU COMMUNICATIONS KIT INSTALLATION
Solutions Overview
Discharge Air Temperature Control
DDC Control by Contact Signal: Variable T
e
+ T
d
(0 - 10V)
.
DDC
(Field Supply)
AI / DI / DO
Signal
LG Central
Controller
(Monitoring only)
T
Room
Room
Remote
Controller
(Monitoring)
T
T
d
DX
Coil
Te
AHU Controller
PAHCMS000
Outdoor Unit
AHU
The DDC controls discharge air temperature by sending an analog input (0 to 10V) to the AHU Communications
Kit. The AHU Communications Kit adjusts the outdoor unit target temperatures (T
e), increasing or decreasing
the discharge air temperatures.
Required Items
Function List
Note :
O : Applied, X : Not applied
1. LG central controller is based on AC Smart IV and ACP IV
Function List
Contact Signal type (DDC) LG Remote Controlle
r
LGCentralController
1
Control
Operating On/Off
O X X
Operation Mode O X X
Return Air Temperature X X X
Discharge Air Temperature X X X
Forced Thermal On/Off X X X
Capacity Control
O X X
Emergency Stop O X X
Monitor
Operating On/Off
O O O
Operation Mode
X O O
Return Air Temperature X X O
Discharge Air Temperature X X O
Defrost status O O X
Error Alarm
O O O
Compressor On/Off
O O X
Expansion Valve Wired Remote Controller Central Controller
MULTI V
EEV Optional (Monitoring only) Optional (Monitoring only)
Singl
e Split
Not Required Optional (Monitoring only) Optional (Monitoring only)