Setup And Configuration - Dhw Tank; Dhw Pump For Instant Hot Water; Dhw Pump For Disinfection; Setting Up The Energy Metering - Daikin ERGA08DAV3 Installer's Reference Manual

▪ 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,
Daikin recommends to heat up the DHW tank during the day.
▪ If energy prices are lower during the night, Daikin recommends
to heat up the DHW 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.
5.3.3 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 backup heater
▪ For more information about optimizing the energy consumption for
producing domestic hot water, see
5.3.4

DHW pump for instant hot water

Setup
h
c
i
f
a
g
b
a Indoor unit
b DHW tank
c DHW pump (field supply)
f Shower (field supply)
g Cold water
h Domestic hot water OUT
i Recirculation connection
▪ By connecting a DHW pump, instant hot water can be available at
the tap.
▪ The DHW pump and the installation are field supply and the
responsibility of the installer.
▪ For more information about
connection: see "7 Installation" on
Configuration
▪ For more information, see "8 Configuration" on
▪ You can program a schedule to control the DHW pump via the
user interface. For more information, see the user reference
guide.
5.3.5

DHW pump for disinfection

Setup
h
c
i
d f
a
e g
b
a Indoor unit
b DHW tank
c DHW pump (field supply)
d Heater element (field supply)
e Non‑return valve (field supply)
f Shower (field supply)
g Cold water
h Domestic hot water OUT
i Recirculation connection
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06
"8 Configuration" on page 44.
connecting the recirculation
page 25.
page 44.
5 Application guidelines
▪ The DHW pump is field-supplied and its installation is the
responsibility of the installer.
▪ The temperature of the DHW tank can be set to maximum 60°C. If
applicable legislation requires higher temperature for disinfection,
you can connect a DHW pump and heater element as shown
above.
▪ If applicable legislation requires disinfection of the water piping
until the tapping point, you can connect a DHW pump and heater
element (if needed) as shown above.
▪ To ensure a complete disinfection, you have to open the tapping
point.
WARNING
When opening the tapping point, the water temperature
can be up to 55°C.
Configuration
The indoor unit can control DHW pump operation. For more
information, see "8 Configuration" on
5.4

Setting up the energy metering

▪ Via the user interface, you can read out the following energy data:

▪ Produced heat

▪ Consumed energy

▪ You can read out the energy data:
▪ For space heating
▪ For domestic hot water production
▪ You can read out the energy data:
▪ Per month
▪ Per year
INFORMATION
The calculated produced heat and consumed energy are
an estimation, the accuracy cannot be guaranteed.
5.4.1 Produced heat
INFORMATION
The sensors used to calculate the produced heat are
calibrated automatically.
▪ The produced heat is calculated internally based on:
▪ The leaving and entering water temperature
▪ The flow rate
▪ Setup and configuration: No additional equipment needed.
5.4.2 Consumed energy
You can use the following methods to determine the consumed
energy:
▪ Calculating
▪ Measuring
INFORMATION
You cannot combine calculating the consumed energy
(example: for backup
consumed energy (example: for outdoor unit). If you do so,
the energy data will be invalid.
page 44.
heater) and measuring the
Installer reference guide
13