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1. Function
The service water stored in the internal boiler enamelled according to DIN 4753 is heated indirectly by the surrounding hea-
ting water. The buffer content (heating water) can be heated indirectly by means of a large-surface pipe register that is wel-
ded in permanently, and/or directly through the coupling sleeves by means of a boiler, heat pump, solar system, screwed-in
heating for the buffer area and a built-in heating for the service water area.
The array and number of sleeves, as well as the pipe register that is available on various models allow a multivalent opera-
tion.
2. Hot Water Demand
The hot water demand in a household depends on the number of persons, the sanitary installations of the apartment or the
house, as well as the individual habits of the user.
The following table provides a few standard values regarding consumption figures.
Full bath
Shower
Washing hands
Hair wash (short hair)
Hair wash (long hair)
Use of bidet
Washing dishes
for 2 persons per day
for 3 persons per day
for 4 persons per day
House cleaning per bu-
cket of cleaning water
The temperature of the cold water required for mixing to the specified hot water temperature was estimated
at approx. 12 °C.
Due to the hysteresis of the temperature control (± 7°K) and possible radiation losses (cooling-down of the pipelines), the
temperature specifications are subject to an accuracy of ± 10°K.
Hot water demand in litres
at 37 °C
at 55 °C
150 - 180
30 - 50
3 - 6
6 - 12
10 - 18
12 - 15
16
20
24
10
11
Required storage water
quantity in litres
with 80 °C
with 60 °C
55 - 66
78 - 94
11 - 18
16 - 26
1 - 2
1,6 - 3,1
3 - 4,4
4,2 - 6,3
3,7 - 6,6
5,2 - 9,4
4,4 - 5,5
6,3 - 7,8
10
14
12,5
18
15,2
21,5
6,3
9
U
E
U
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Id.Nr.: 236921-13
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