LG Hydro Kit Installation Manual page 69

• Tank setting 1, 2
Descriptions for each parameters are as following.
- Min temp. : temperature gap from Max outdoor temp.
- Max outdoor temp. : maximum temperature generated by AWHP compressor cycle.
- Example : If Min temp. is set as '5' and Max outdoor temp. is set as '48', then Session A (see the
graph) will be started when the water tank temperature is below 45 °C.... If temperature is above
48 °C..., then Session B will be started.
- Hysteresis : temperature gap from target DHW temperature. This value is required to frequent On
and Off of water tank heater.
- Heating priority : Determining heating demand priority between DHW tank heating and under floor
heating.
- Example : If user's target temperature is set as '70' and Hysteresis is set as '3', then the water
tank heater will be turned off when the water temperature is above 73 °C. The water tank heater
will be turned on when the water temperature is below 70 °C.
- Example : If Heating priority is set as 'DHW', that means heating priority is on DHW heating, DHW
is heated by AWHP compressor cycle and water heater. In this case the under floor can not be
heated while DHW heating. On the other hand, if the Heating priority is set as 'Floor heating', that
means heating priority is on under floor heating, DHW tank is ONLY heated by water heater. In
this case the under floor heating is not stopped while DHW is heated.
Water temperature
(Inside sanitary water tank)
Water heater off
temperature
Target DHW
temperature (set by user)
Max outdoor temp.
Starting temperature
of DHW heating
NOTICE
DHW heating does not operate when it is disabled.
Hydro kit only performs the heating priority function.
Min temp.
Session A Session A Session A
Session B
Session A : Heating by AWHP compressor cycle and water heater
Session B : Heating by water heater
Session C : No heating (Water heater is Off)
Session D : Heating by water heater
Session C
Session D Session D Session D
Hydro Kit Installation Manual 69
System Set-Up
Hysteresis
Time