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Dip Switch Settings - LG PAHCMR000 Installation Manual

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AHU COMMUNICATIONS KIT INSTALLATION

DIP Switch Settings

Setting the AHU DIP Switches
For the AHU Communications Kit to function properly, set the DIP switches as required by your system.
The default setting of all DIP switches is "off"
Switch
DIP Switch
Number
1
2
Control Type
SW1
3
4
(TH. On/Off)
1
2
SW2
3/4
1
Master/Slave
SW3
Operation mode
2/3
4
SW4
1~4
Notes :
1) Do not change reserved switches. Changing reserved switches may cause equipment malfunction.
2) If using group control, the maximum length of the group control cable is 164ft including remote controller wiring.
10
Figure 3: DIP Switches
Table 4: DIP Switch Settings.
Item
Setting
On
ODU Type
Off
On
Off
On
DO Type
Off
On
Fan Speed
Off
Reserved
-
Reserved
-
Off/Off
UI Setting
Off/On
On/Off
On/On
On
Off
Off/Off
Off/On
setting
On/Off
On/On
Reserved
-
Capacity
--
Setting
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.
Single Comm.
Using Single Zone outdoor unit
MULTI V Comm.
Using MULTI V outdoor unit
Communication
Controlled by DDC through Modbus or LG centralized controller
Controlled by DDC through Contact signal (AI, DI)
Contact signal
LG Centralized controller can only monitor status
Fan speed
DO1 : High, DO2 : Middle, DO3 : Low
DO1 : On/Off, DO2 : Defrost, DO3 : Alarm
Status
Fixed
Fan Speed doesn't change when TH. On/Off (Cooling/Heating)
Fan Speed change to LOW when Th. Off in Cooling Mode
Change
Fan Speed change to STOP when Th. Off in Heating Mode
-
-
UI1 : Operation On/Off, UI2 : Heating/Cooling
UI Setting #1
UI3 : Forced Thermo On/Off, UI4 : Target air temperature
UI1 : Operation On/Off, UI2 : Cooling only/Off
UI Setting #2
UI3 : Heating only/Off, UI4 : Forced Thermo On and Off
R
s e
v r e
d e
R
s e
v r e
d e
Slave mode
Master mode
Master mode is default for single AHU Controller installation.
Heat Pump
Cooling or Heating operation mode is available
Heating Only
Operation mode is Heating only (Heating / Fan)
Cooling Only
Operation mode is Cooling only (Cooling / Fan)
R
s e
v r e
d e
-
Refer to the capacity DIP switch setting table for details
Communication Module
Note
-
-
-
-
-
-

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