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Electric water heater EHT - 50, 80, 100, 120, 150 litres
1. FUNCTION
The service water stored in the enamelled internal boiler is heated by the electric heating unit. The
desired temperature can be selected by the user on the regulating toggle. The heating is switched
on automatically by the temperature control and off again when the desired tank water temperature
is reached during the heating period determined by the relevant power supply company. If the water
temperature drops, e.g. by the withdrawal of water or natural cooling (reduced as far as possible by
the high-quality CFC-free PU foam insulation), the device heating switches on again until the selected
tank water temperature is reached.
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, the insulation, the pipelines and 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 bucket
of cleaning water
The temperature of the cold water required for mixing to the specified hot water temperature was
estimated at approx. 12 °C.
18
Hot water demand
in litres
at 37 °C
at 55 °C
with 80 °C
150 - 180
30 - 50
3 - 6
6 - 12
10 - 18
12 - 15
16
20
24
10
Required storage water
quantity in litres
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
243648-1
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