LG Multi V ARWN Series Installation Manual page 28

28
Geothermal mode setting
If you want to use the product with heat source water of the low tem-
perature such as ground heat, it is the function that enables the use of
ground heat mode.
How to set the mode
Turn on DIP switch No.5 of the master unit PCB
Use '▶' and '◀' button to mark "Func" in the 7 seg-
ment, and press '●' button.
Use '▶' and '◀' button to mark "Fn2" in the 7 seg-
ment, and press '●' button.
Use ' ' and ' ' button to select between "ON" and
"OFF" in the 7 segment, and press '●' button.
Decide the Geothermal mode according to
the setting mode.
Mode setting
- ON: Set to operate in geothermal mode
- OFF: Set to operate in general mode
Minimum temperature for anti freezing (°C)
Anti freeze type
0
Ethylene glycol (%) 0
Propylene glycol (%) 0
Methanol (%) 0
! CAUTION
• Request the function settings to the installation specialist during
the outside unit installation.
• When the function is not used, set it to OFF.
• Before changing the mode, make sure to check if the antifreeze
is added to the heat source water with appropriate ratio.
(If it is set to geothermal mode with inappropriate addition of an-
tifreeze or without antifreeze, there is a risk of product damage,
and we will not be responsible for such damage of the product.)
• When you add antifreeze, there may be increase of pressure dif-
ference in the heat source water system and product perform-
ance degradation.
• If it is in geothermal mode, add antifreeze according to the tem-
perature condition of at least -10°c.
(If the added amount is of -10°C or more, it may cause freeze
and burst of the heat source water.)
-5 -10 -15 -20
12 20 30 -
17 25 33 -
6 12 16 24
Sol. Valve 220V output
It is the function to select 220V output when you want solenoid valve
control.
How to set the mode
Turn on DIP switch No.5 of the master unit PCB
Use '▶' and '◀' button to mark "Func" in the 7 seg-
ment, and press '●' button.
Use '▶' and '◀' button to mark "Fn3" in the 7 seg-
ment, and press '●' button.
Use '▶' and '◀' button to select between "ON" and
"OFF" in the 7 segment, and press '●' button.
Decide Sol. Valve 220V control
according to the set mode.
Mode setting
- ON: Set to control the heat source water pipe Solenoid Valve from
the product.
- OFF: Set not to control the heat source water pipe Solenoid Valve
from the product.
-25
! CAUTION
-
• Request the function settings to the installation specialist during
-
the outside unit installation.
30
• When the function is not used, set it to OFF.
Variable water flow control
It is the function to select when you want to install Variable water flow
control kit and control it from the product.
How to set the mode
Turn on DIP switch No.5 of the master unit PCB
Use '▶' and '◀' button to mark "Func" in the 7 seg-
ment, and press '●' button.
Use '▶' and '◀' button to mark "Fn4" in the 7 seg-
ment, and press '●' button.
Use '▶' and '◀' button to select between "ON" and
"OFF" in the 7 segment, and press '●' button.
Decide the Variable water flow control mode
according to the set mode.
Mode setting
- ON: Set to control the variable water flow control valve from the prod-
uct
- OFF: Set not to control the variable water flow control valve from the
product
CAUTION
!
• Request the function settings to the installation specialist during
the outside unit installation.
• When the function is not used, set it to OFF.