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• Id.Nr.: 229224-9
District heating tank FSN and FSN-E
2. Hot Water
B F
Hot water consumption in the household is dependent upon the number of people, the sanitary fittings
in the flat or house, the insulation, the plumbing and the individual habits of the user.
The following table provides a few standard values for consumption.
The temperature of the cold water required for mixing for the stated hot water temperature was as-
sumed to be 12 °C.
3. Save Energy
B F
Our district heating storage tanks are real energy savers due to the high quality, ecologically friendly
polyurethane foam insulation and the built-in temperature regulation system.
Low storage water temperatures turn out to be particularly economical. That is why the level of the
continuously variable temperature adjustment should only be set in accordance with the actual hot
water requirements. That helps save energy and reduces lime-scale build up within the container.
4. Standby Energy Consumption
B F
If a water heater is heated up and no water is released for a long time after the heating process an,
albeit gradual but continuous, cooling of the stored water via the surface of the device will be the result.
Depending upon the construction type of the device, the size of the device, strength and quality of the
container insulation, the intensity and speed of this cooling off will vary.
This behaviour is measured at a stored water temperature of 65 °C over a period of 24 hours and
the amount of energy required to keep the water at a constant temperature throughout this period is
measured in kWh.
Standby energy consumption measured in accordance with EN 12897: max. 0,9 kW/24h
Hot water requirements
in litres
Required stored water
capacity in litres
at 37 °C
at 55 °C
at 80 °C
at 60 °C
Bath
150 - 180
55 - 66
78 - 94
Shower
30 - 50
11 - 18
16 - 26
Hand-wash
3 - 6
1 - 2
1.6 - 3.1
Hair-wash (short hair)
6 - 12
3 - 4.4
4.2 - 6.3
Hair-wash (long hair)
10 - 18
3.7 - 6.6
5.2 - 9.4
Bidet utilisation
12 - 15
4.4 - 5.5
6.3 - 7.8
Washing dishes
for 2 people per day
16
10
14
for 3 people per day
20
12.5
18
for 4 people per day
24
15.2
21.5
Housework per bucket
of cleaning water
10
6.3
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