LG Therma V HM091MRS Installation Manual page 143

rd
3 Party Boiler
This function is to configure the 3rd party boiler to be controlled.
If the status of this function is "Use", you can choose control mode of boiler, Auto or Manual.
If the mode of this function is set to "Manual", you can set temperature of the boiler and
hysteresis, respectively.
External boiler ON condition :
- If outdoor temperature ≤ external boiler operation temperature value (installer setting), turn off
the indoor unit and operate the external boiler.
External boiler OFF condition :
- If External air temperature ≥ external boiler operation temperature value (installer setting) +
Hysteresis (installer setting), turn off external boiler operation and operate indoor unit
INSTALLER SETTING
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