Daikin Altherma 3 R W Installer's Reference Manual page 50
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Also See for Altherma 3 R W:
- Installer's reference manual (296 pages) ,
- Installation manual (44 pages) ,
- User reference manual (60 pages)
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6
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Application guidelines
Installer reference guide
50
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?
How much water is needed at the
kitchen sink per day?
Are there any other domestic hot water
needs?
Example: If the DHW consumption of a family (4 persons) per day is as follows:
▪
3 showers
▪
1 bath
▪
3 sink volumes
Then the DHW consumption = (3×100 l)+(1×150 l)+(3×10 l)=480 l
Determining the volume and desired temperature for the DHW tank
Formula
V
=V
+V
×(T
−40)/(40−T
1
2
2
2
V
=V
×(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
Possible DHW tank volumes
Type
Standalone DHW tank
1 shower = 10 min×10 l/min = 100 l
1 bath = 150 l
1 sink = 2 min×5 l/min = 10 l
—
)
1
▪
150 l
▪
180 l
▪
200 l
▪
250 l
▪
300
compatible with solar kit)
▪
500 l (compatible with solar kit)
Typical water volume
Example
If:
▪
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
Possible volumes
l
(polypropylene
ERGA04~08E + EHBH/X04+08E
Daikin Altherma 3 R W
4P629085-1C – 2022.05
tank
is
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