Setup And Configuration - Dhw Tank; Combination: Standalone Dhw Tank + Solar Panels; Dhw Pump For Instant Hot Water; Daikin Altherma - Low Temperature Split - Daikin ERLQ004CA Installer's Reference Manual

Determining the volume and desired temperature for the DHW
tank
Formula
V = V + V x (T - 40) / (40 - T
1 2 2 2
V = V x (40 - T ) / (T - T )
2 1 1 2 1
V : DHW consumption (equivalent hot water volume at 40°C)
1
V : Required DHW tank volume if only heated once
2
T : DHW tank temperature
2
T : Cold water temperature
1
5.4.4 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 integrated DHW tank)
Electrical booster heater (for standalone DHW tank)
Solar panels
For more information about:
Optimizing the energy consumption for producing domestic
hot water, see the configuration chapter.
Connecting the electrical wiring of the standalone DHW
tank to the indoor unit, see the installation chapter.
Connecting the water piping of the standalone DHW tank to
the indoor unit, see the installation manual of the DHW
tank.
EHBH04+08 + ERLQ004~008

Daikin Altherma - Low Temperature Split

4P313774-1 – 2012.05
Example
) If:
1
V = 180 l
2
T = 54°C
2
T = 15°C
1
Then V = 280 l
1
If:
V = 480 l
1
T = 54°C
2
T = 15°C
1
Then V = 307 l
2
5 Application guidelines
5.4.5 Combination: Standalone DHW tank + Solar
panels
By connecting the DHW tank to solar panels, the DHW tank can be
heated by solar energy.
For installation instructions, see the installation manual of the solar kit
and addendum book for optional equipment.
c.4 c
c.3
a
c.2
b
a Solar panels
b Solar pump station
c Solar pump station controller with temperature sensors
c1 Tank temperature sensor
c2 Return temperature sensor to solar panels
c3 Supply temperature with flow meter from solar panels
c4 Solar panel temperature sensor
d Solar kit
e DHW temperature sensor of the unit
f Solenoid 2-way valve (only for UK). Obligatory for
compliance to UK building regulation G3.
Heating system
Example of unit

5.4.6 DHW pump for instant hot water

Setup
h
c
a
i
f
b
g
a Indoor unit
b DHW tank
c DHW pump
f Shower
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 connecting the recirculation
connection (for integrated DHW tank), see the installation
chapter.
Configuration
For more information, see the configuration chapter.
You can program a schedule to control the DHW pump via the
user interface. For more information, see the user reference
guide.
M
f
e
c.1
d
Installer reference guide
16