Setup And Configuration - Storage Tank - Daikin ERGA04EAV37 Installer's Reference Manual

6 | Application guidelines
6.4.3 Setup and configuration – storage tank
Installer reference guide
54
Possible storage tank volumes
Type
Integrated storage tank
Energy saving tips
▪ If the DHW consumption differs from day to day, you can program a weekly
schedule with different desired storage tank temperatures for each day.
▪ The lower the desired storage tank temperature, the more cost effective. By
selecting a larger storage tank, you can lower the desired storage tank
temperature.
▪ The heat pump itself can produce domestic hot water of maximum 55°C (50°C if
outdoor temperature is low). The electrical resistance of the option backup
heater (EKECBU*) can increase this temperature if it is installed and activated.
However, this consumes more energy. We recommend to set the desired storage
tank temperature below 55°C to avoid using the electrical resistance.
▪ The higher the outdoor temperature, the better the performance of the
heat pump.
- If energy prices are the same during the day and the night, we recommend to
heat up the storage tank during the day.
- If energy prices are lower during the night, we recommend to heat up the
storage tank during the night.
▪ When the heat pump produces domestic hot water, it cannot heat up a space. In
case you need domestic hot water and space heating at the same, we
recommend to produce the domestic hot water during the night when there is
lower space heating demand.
▪ For large DHW consumptions, you can heat up the storage tank several times
during the day.
▪ To heat up the storage tank to the desired storage tank temperature, you can
use the following energy sources:
- Thermodynamic cycle of the heat pump
- Electrical backup heater (optional)
- Bivalent heat source, see
▪ For more information about optimizing the energy consumption for producing
domestic hot water, see "11 Configuration" [
Equivalent hot water volume at 40°C
Approximate values of equivalent hot
water volume at 40°C for different
setpoints of the storage tank in average
climate
▪ 300
- 48°C: ~140 l of mixed water at 40°C
- 55°C: ~218 l of mixed water at 40°C
▪ 500
- 48°C: ~228 l of mixed water at 40°C
- 55°C: ~372 l of mixed water at 40°C
"6.3 Setting up bivalent heat
4
149].
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
4
sources" [ 47]
Daikin Altherma 3 R ECH₂O
4P678716-1A – 2022.07