LG ARUN80LN3 Installation Manual page 83

Cool and Heater Selector Installation and Connection
• Connect wires as below figure at the hole of backside of Outdoor Unit Dry Contact.
• Insert the wire in the connection hole pushing the "Push" button.
• Setting Main PCB Dip SW of Master Outdoor Unit.
¨≠ ¨≠
¨≠
GND
< Outdoor Main PCB >
shows field wiring
connected wiring
❈ Communication line length can be maximum 300m, use communication line as thick as 1.25mm
Without Cool/Heat Selector Installation and Connection
In case, try to set mode without Cool/Heat Selector and try to use other switch except from LG Outdoor
Cool/Heat Selector in field.
Connect signal terminal block as below figure and description.
- How to set mode without Cool/Heat Selector
• Cooling Mode Setting
➀ ➔ GND Connection
➁ ➔ Off (Open)
• Heating Mode Setting
➀ ➔ GND Connection
➁ ➔ GND Connection
• Fan/ All OFF Mode Setting
➀ ➔ Off (Open)
➁ ➔ GND Connection
3
GND GND GND
4
¨ ¨
≠ ≠
¨
GND GND GND
≠
3
GND
4
<Outdoor Dry Contact Back Side >
- Insert wire method -
1
2
Push arrow direction.
1
Insert wire to connector.
2
GND
GND
GND
Electrical Wiring
Push Button
Installation Manual 83
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2