Installation manual
9
8
Dry contact for thermostat
ENGLISH
Setting and using method
Power supply and indoor unit connection
After change any Dry contact setting, then you must press RESET switch to reflect the setting.
n
When using the Dry contact for communication independently
Indoor unit
PCB
CN_INDOOR
CN_INDOOR
CN_INDOOR
CN_CC
Setting and using method
Setting and using method
Setting of Contact Signal Input
n
For input contact closure only(No power input)
COMM
Themal
Operation
COMM
FA
N
HEA
T
COOL
LOW
MIDDLE
HIGH
Notes
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
Connect separate
External voltage of
DC 12 V, AC 24 V
Thermostat
LG does not
supply this section
(Field supply)
Thermostat
LG does not
supply this section
(Field supply)
COMM
Themal
Operation
COMM
FA
N
HEA
T
COOL
LOW
MIDDLE
HIGH
n
For input contact voltage : DC 12 V, AC 24 V
