LG PDRYCB300 - Page 23

Installation manual 1918 Dry contact for thermostat
ENGLISH
Setting and using method
NOT USE
CHANGE
OVER_SW
VOLT
NON VOLT
CHANGEOVER_SW
RESET_SW
CN_Ther/Oper CN_MODE
CN_WIND
CN_INDOOR
DISPLAY_LED
TEMP_SW
SETTING_SW
CN_OUT
CN_PI485
Thermostat
LG does not supply this section
(Field supply)
LOW
MIDDLE HIGH
H
H
N
HH
Operation Thermal
FAN
HEAT
COMM
C
24 V~
RYGB
n For heat pump thermostat with B terminal signal input
Thermostat Fan & System Switch Input
IDU Response
[Mode / Thermal / Fan]
FAN
[Auto / On]
MODE
[Cool / Heat / Off]
Operation
Thermal
[Y]
FAN
[G]
HEAT
[B]
- - - 0 - - - Disable Operation
Auto
OFF - 1 0 0 0 Off
Cool
RT > SP 1 1 0 0 Cool / On / On
RT < SP 1 0 0 0 Off
Heat
RT < SP 1 1 0 1 Heat/ On/On
RT > SP 1 0 0 1 Off
ON
OFF - 1 0 1 0 Fan/ Off/ On
Cool
RT > SP 1 1 1 0 Cool/ On/ On
RT < SP 1 0 1 0 Fan/ Off/ On
Heat
RT < SP 1 1 1 1 Heat/ On/ On
RT > SP 1 0 1 1 Fan/ Off/ On
Notes
• Thermostats that close contacts "O" or "B" during Cool or Heat call only have not been verified. "O"
and/or "B" contact closure must be maintained during respective cycle / mode selection.
• IDU Fan logic, depending on model selected, may delay IDU fan operation momentarily during a cold
start heat call. This function allows IDU coil to warm up prior to operating fan in some IDU models.
• Thermostats that use resistive anticipation are not supported at this time.
• Verify documentation of desired thermostat so that the logic is same as shown in the table above.
Setting and using method
NOT USE
CHANGE
OVER_SW
VOLT
NON VOLT
CHANGEOVER_SW
RESET_SW
CN_Ther/Oper CN_MODE
CN_WIND
CN_INDOOR
DISPLAY_LED
TEMP_SW
SETTING_SW
CN_OUT
CN_PI485
Thermostat
LG does not supply this section
(Field supply)
LOW
MIDDLE HIGH
H
H
N
HH
Operation Thermal
FAN
COOL
COMM
C
24 V~
RYGO
n For heat pump thermostat with O terminal signal input
Thermostat Fan & System Switch Input
IDU Response
[Mode / Thermal / Fan]
FAN
[Auto / On]
MODE
[Cool / Heat / Off]
Operation
Thermal
[Y]
FAN
[G]
COOL
[O]
- - - 0 - - - Disable Operation
Auto
OFF - 1 0 0 0 Off
Cool
RT > SP 1 1 0 1 Cool / On / On
RT < SP 1 0 0 1 Off
Heat
RT < SP 1 1 0 0 Heat/ On/On
RT > SP 1 0 0 0 Off
ON
FAN - 1 0 1 0 Fan/ Off/ On
Cool
RT > SP 1 1 1 1 Cool/ On/ On
RT < SP 1 0 1 1 Fan/ Off/ On
Heat
RT < SP 1 1 1 0 Heat/ On/ On
RT > SP 1 0 1 0 Fan/ Off/ On
Notes
• Thermostats that close contacts "O" or "B" during Cool or Heat call only have not been verified. "O"
and/or "B" contact closure must be maintained during respective cycle / mode selection.
• IDU Fan logic, depending on model selected, may delay IDU fan operation momentarily during a cold
start heat call. This function allows IDU coil to warm up prior to operating fan in some IDU models.
• Thermostats that use resistive anticipation are not supported at this time.
• Verify documentation of desired thermostat so that the logic is same as shown in the table above.
※ RT : Room Temperature
※ SP : Set Point
※ RT : Room Temperature
※ SP : Set Point