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80 Outdoor Unit
Electrical Wiring
Cool/Heat Selector Installation and Connection
Using Cool/Heat Selector Installation and Connection
- Connect wires to the cool/heat selector as shown in below figure
- Insert the wire in terminal by pushing “push” button
- Set the Dip SW of main PCB in master outdoor unit
¨≠
GNDGND
¨≠
GND
< Outdoor Main PCB >
- Insert wire method -
shows field wiring
connected wiring
Push arrow direction.
Insert wire to connector.
Push Button
<Outdoor Dry Contact Back Side >
¨
≠
¨
≠
GNDGNDGND
1
2
3
4
1
2
3
4
❈ Communication line length can be maximum 300m, use communication line as thick as 1.25mm
2
.
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
¿‘GND Connection
¡‘Off (Open)
• Heating Mode Setting
¿‘ GND Connection
¡‘GND Connection
• Fan/ All OFF Mode Setting
¿‘ Off (Open)
¡‘GND Connection
GND
GND
GND
¨≠
GND
¨
≠
GND
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