Daikin Altherma 3 H F - Setting up the Domestic Hot Water Tank; System Layout - Integrated DHW Tank; System Layout - Standalone DHW Tank; Selecting the Volume and Desired Temperature for the DHW Tank

6 | Application guidelines
Installer reference guide
33
EPGA11~16DAV3(7) + EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556075-1A – 2021.09
▪ Efficiency.
- Depending on the demand, the indoor unit supplies different leaving water
temperature matching the design temperature of the different heat emitters.
- Underfloor heating has the best performance with the heat pump system.
6.3 Setting up the domestic hot water tank
6.3.1 System layout – Integrated DHW tank
M
M
bca d ge h ii
i
j
j
f
k
i
HPC1
UI
FHL1 FHL2 FHL3
HPC2 HPC3
a c
i
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑way valve (switch between space heating and domestic hot water)
f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump
i Shut-off valve
j Collector (field supply)
k Domestic hot water tank
FHL1...3 Floor heating loops (field supply)
UI User interface (field supply)
HPC1...3 Heat pump convectors (field supply)
6.3.2 System layout – Standalone DHW tank
6.3.3 Selecting the volume and desired temperature for the DHW tank
People experience water as hot when its temperature is 40°C. Therefore, the DHW
consumption is always expressed as equivalent hot water volume at 40°C.
However, you can set the DHW tank temperature at a higher temperature
(example: 53°C), which is then mixed with cold water (example: 15°C).
Selecting the volume and desired temperature for the DHW tank consists of:
1 Determining the DHW consumption (equivalent hot water volume at 40°C).
2 Determining the volume and desired temperature for the DHW tank.
Determining the DHW consumption
Answer the following questions and calculate the DHW consumption (equivalent
hot water volume at 40°C) using typical water volumes: