LG Contact sec pour thermostat PDRYCB320 Manuel D'installation page 10

Setting and using method
n For heat pump thermostat with O terminal signal input
AC 24 V
Thermostat Fan & System Switch
FAN MODE Thermal
Operation
[Auto / On] [Cool / Heat / Off]
- - - 0
OFF - 1
RT > SP 1
Cool
Auto RT < SP 1
RT < SP 1
Heat
RT > SP 1
FAN - 1
RT > SP 1
Cool
ON RT < SP 1
RT < SP 1
Heat
RT > SP 1
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.
18 Dry contact for thermostat
Thermostat
LG does not supply this section
L
(Field supply)
N
L L L
C R Y G O
Input
IDU Response
FAN COOL
[Mode / Thermal / Fan]
[Y] [G] [O]
- - - Disable Operation
0 0 0 Off
1 0 1 Cool / On / On
0 0 1 Off
1 0 0 Heat/ On/On
0 0 0 Off
0 1 0 Fan/ Off/ On
1 1 1 Cool/ On/ On
0 1 1 Fan/ Off/ On
1 1 0 Heat/ On/ On
0 1 0 Fan/ Off/ On
※ RT : Room Temperature
※ SP : Set Point
n For heat pump thermostat with B terminal signal input
AC 24 V
Thermostat Fan & System Switch
FAN MODE Thermal
Operation
[Auto / On] [Cool / Heat / Off]
- - - 0
OFF - 1
RT > SP 1
Cool
Auto RT < SP 1
RT < SP 1
Heat
RT > SP 1
OFF - 1
RT > SP 1
Cool
ON RT < SP 1
RT < SP 1
Heat
RT > SP 1
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
Thermostat
LG does not supply this section
L
(Field supply)
N
L L L
C R Y G B
Input
IDU Response
FAN HEAT
[Mode / Thermal / Fan]
[Y] [G] [B]
- - - Disable Operation
0 0 0 Off
1 0 0 Cool / On / On
0 0 0 Off
1 0 1 Heat/ On/On
0 0 1 Off
0 1 0 Fan/ Off/ On
1 1 0 Cool/ On/ On
0 1 0 Fan/ Off/ On
1 1 1 Heat/ On/ On
0 1 1 Fan/ Off/ On
※ RT : Room Temperature
※ SP : Set Point
Installation manual 19