LG PQDSBC1, Installation Manual

Page: 10 / 61

Setting and using method
10 Dry contact For Economizer
Setting and using method
1. Power supply and indoor unit connection
You must press the RESET switch when you are completed with all the settings to reflect the
settings.
n
When using the Dry contact For Economizer independently
n
When using with the central controller (Only when the indoor
unit PCB is a non-communication model)
Indoor unit
PCB
PI485: Connect to central controller
CN_PI485
CN_INDOOR CN_INDOOR CN_INDOOR
CN_INDOOR
Indoor unit
PCB
CN_INDOOR
CN_INDOOR CN_INDOOR CN_INDOOR
Ú
CN-CC
↔
CN_INDOOR, CN-OUT(PI485)
↔
CN_PI485