LG LZ-H050GBA2 Installation Manual page 21

How to connect Remote Controller
• This unit can be used as part of the combined operation system used together with indoor
units(Multi-V system air conditioners), or as an independent system for processing outside air.
<Combined operation system with Multi-V system(connected with ventilation units and
standard indoor units in a single refrigerant circuit)>
LGAP Network System
PI485
12V
GND
SIGNAL
Combined operated system
Communication line
<Independent system (connected only with a ventilation unit in a single refrigerant circuit)>
LGAP Network System
PI485
Independent system
Communication line
Installation Manual 21