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• 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 DHW tank)
Water heater off
temperature
Target DHW temperature
(set by user)
Max outdoor temp.
Starting temperature
of DHW heating
DHW heating does not operate when it is disabled.
Min temp.
Session A
Session C
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
- 49 -
Hysteresis
Session D
Time
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Troubleshooting
