25
Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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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
T
e
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 Controller 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)
Single Split
Not Required
Optional (Monitoring only)
Optional (Monitoring only)
