Daikin Altherma 3 R W - Room Temperature Troubleshooting; Hot Water Troubleshooting

6 | Application guidelines
Installer reference guide
53
ERLA11~16D + EBBH/X11+16D
Daikin Altherma 3 R W
4P643603-1B – 2022.05
Energy saving tips
▪ If the DHW consumption differs from day to day, you can program a weekly
schedule with different desired DHW tank temperatures for each day.
▪ The lower the desired DHW tank temperature, the more cost effective. By
selecting a larger DHW tank, you can lower the desired DHW tank temperature.
▪ The heatpump itself can produce domestic hot water of maximum 55°C (lower if
the outdoor temperature is low). The electrical resistance integrated in the
heatpump can increase this temperature. However, this consumes more energy.
We recommend to set the desired DHW 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 DHW tank during the day.
- If energy prices are lower during the night, we recommend to heat up the DHW
tank during the night.
▪ When the heatpump produces domestic hot water, depending on total heating
demand and the scheduled priority setting, it might not be able to heat up a
space. In case you need domestic hot water and space heating at the same time,
we recommend to produce the domestic hot water during the night when there
is lower space heating demand or during the time when occupants are not
present.
6.4.3 Setup and configuration – DHW tank
▪ For large DHW consumptions, you can heat up the DHW tank several times
during the day.
▪ To heat up the DHW tank to the desired DHW tank temperature, you can use the
following energy sources:
- Thermodynamic cycle of the heatpump
- Electrical booster heater
▪ For more information about:
- Optimising the energy consumption for producing domestic hot water, see
"11Configuration"[4146].
- Connecting the electrical wiring of the standalone DHW tank to the indoor unit,
see the installation manual of the DHW tank, and the addendum book for
optional equipment.
- Connecting the water piping of the standalone DHW tank to the indoor unit,
see the installation manual of the DHW tank.
- Optimising the minimum water volume requirement by using the tank
preheating function:
See "8.5.3To check the water volume and flow rate"[4109] for water circuit
requirements.
For stainless steel tanks (EKHWS*D*), the additional components described in
"6.4.6DHW pump for tank preheating"[455] must be installed.
For polypropylene tanks (EKHWP*), the booster heater option (EKBH3S) must
be installed.