
90
ACCESSORIES INSTALLATION
ENGLISH
Smart Grid
This product provides smart grid function for users. It enables to stop internal operation(Heating
/ DHW) and control target temperature depending on input signal from power provider.
How to wire smart grid signal
Follow below procedures step 1 ~ step 3.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish terminal block in Indoor PCB.
Step 3. Connect signal cable to terminal block in PCB (TB_SG2, TB_SG1) fully as shown below.
TB_SG2
TB_SG1
Indoor PCB
Heating and DHW Operation depend on input signal(SG1 / SG2)
Status
display
Input Signal
Command
Cost
(Electric)
Operation
SG1
SG2
Heating
Domestic How Water
SGN
Open
Open
Normal
Operation
Normal
Price
Maintain operation
status
Maintain operation
status
SG1
Close
Open
Operation
Off
(Utility lock)
High
Price
Forced internal
operation off
Forced internal
operation off
SG2
Open
Close
Operation On
Recommend
Low
Price
Target temperature
change automatically
depend on SG Mode
value in installer setting
- Step 0 : maintain
target temperature
- Step 1 : increase 2 °C
from target
temperature
- Step 2 : increase 5 °C
from target
temperature
Target temperature
change automatically
depend on SG Mode
value in install setting
- Step 0 : increase 5 °C
from target
temperature
- Step 1 : increase 5 °C
from target
temperature
- Step 2 : increase 7 °C
from target
temperature
SG3
Close
Close
Operation On
Commend
Very Low
Price
Maintain operation
status
Target temperature
change automatically to
80 °C