Setting Up The Domestic Hot Water Tank; System Layout - Integrated Dhw Tank; Selecting The Volume And Desired Temperature For The Dhw Tank - Daikin Altherma 3 R MT F Series Installer's Reference Manual

6 | Application guidelines

6.3 Setting up the domestic hot water tank

6.3.1 System layout – Integrated DHW tank

6.3.2 Selecting the volume and desired temperature for the DHW tank

Installer reference guide
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Benefits
▪ Comfort.
- The smart room thermostat functionality can decrease or increase the desired
leaving water temperature based on the actual room temperature
(modulation).
- The combination of the two heat emitter systems provides the excellent
heating comfort of the underfloor heating, and the excellent cooling comfort of
the heat pump convectors.
▪ 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.
a
A Domestic hot water
a Cold water IN
b Hot water OUT
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:
Question
How many showers are needed per
day?
How many baths are needed per day?
b
A
1 shower = 10 min×10 l/min = 100 l
1 bath = 150 l
Typical water volume
ERRA08~12E + ELVZ12S18+23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05