Dry Contact - LG THERMA V AHBW036H0 Installation Manual

Accessories Installation

Dry Contact

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.
- To apply power source directly to external source.
38 Air-to-Water Heat Pump
DRY CONTACT
PCB
RY2
CN-CC RY1
N
2 1
2 1
DRY CONTACT
DRY CONTACT
PCB
PCB
CN-CC
RY2
RY1
N
2 1
2 1
LG does not
supply this wire
Operation Display
4 4
Error Check Display
3 3
2 2
1 1
CN_DRY
L
LG does not
INPUT
supply this section
AC 220V
Operation Display
4 4
3 3 Error Check Display
2 2
1 1
CN_DRY
L
AC 220V
LG does not
supply this section
Dry contact
Controller
Dry contact
Controller