LG PDRYCB320 - Heat Pump Thermostat (O Terminal); Heat Pump Thermostat (B Terminal)

Installation manual 1918 Dry contact for thermostat
ENGLISH
Setting and using methodSetting and using method
Thermostat
LG does not supply this section
(Field supply)
LOW
MIDDLE HIGH
L
L
N
LL
Operation Thermal
FAN
COOL
COMM
C
AC 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-1000 Off
Cool
RT > SP1101 Cool / On / On
RT < SP1001 Off
Heat
RT < SP1100 Heat/ On/On
RT > SP1000 Off
ON
FAN-1010 Fan/ Off/ On
Cool
RT > SP1111 Cool/ On/ On
RT < SP1011 Fan/ Off/ On
Heat
RT < SP1110 Heat/ On/ On
RT > SP1010 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
Thermostat
LG does not supply this section
(Field supply)
LOW
MIDDLE HIGH
LLL
Operation Thermal
FAN
HEAT
COMM
L
N
C
AC 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.
※ RT : Room Temperature
※ SP : Set Point