LG THERMA V AHBW036H0 - Dry Contact

Accessories Installation
38 Air-to-Water Heat Pump
LG Dry Contact is a solution for automatic control of air conditioning system at the owner's behest.
In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from
external sources like key-in lock, door or window switch etc specially used in Hotel rooms.
How to Install Dry Contact
Connect CN_DRY with Control Unit.
- To apply power source through Dry Contact PCB.
Dry Contact
Dry contact
Controller
CN-CC
DRY CONTACT
PCB
DRY CONTACT
PCB
LG does not
supply this section
LG does not
supply this section
LG does not
supply this wire
Operation Display
Error Check Display
Dry contact
Controller
Operation Display
Error Check Display
CN_DRY
4
3
2
4
3
2
1 1
2
2
1
1
L
N
AC 220V
RY1
RY2
CN_DRY
INPUT
AC 220V
4
3
2
4
3
2
1 1
2
2
1
1
L
N
RY1
RY2
CN-CC
DRY CONTACT
PCB
- To apply power source directly to external source.