6.4.3 Setup and configuration – storage tank
EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
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 "10 Configuration" [
6
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
-
50°C: ~190 l of mixed water at 40°C
-
53°C: ~220 l of mixed water at 40°C
▪
500
-
46°C: ~240 l of mixed water at 40°C
-
55°C: ~410 l of mixed water at 40°C
"6.3 Setting up bivalent heat
4
141].
Application guidelines
|
4
sources" [
48]
Installer reference guide
55