5
Id.Nr.: 234660-8 • GB
4. Standby energy consumption
If a water heater is heated-up and no water is removed for a lengthy period of time after completion of
the heating process, a somewhat slow but continuous cooling down of the stored water takes place
over the surface of the appliance.
The intensity and speed of this cooling-down process depend on the design of the appliance, as well as
on its size, thickness and the quality of the storage tank‘s insulation.
This behaviour over a period of 24 hours is measured at a storage water temperature of 65°C, with cal-
culations being made of the energy expenditure in kWh that is necessary in order to maintain the water
temperature constant over this period of time.
4.1 Model series VACUMAIL
Hot water requirements in litres
50
80
100
120
150
Standby energy consumption in kWh/24 h
0,72
0,95
1,08
1,23
1,45
5. Operation
The requisite operating devices needed to operate the electrical storage unit (temperature control sys-
tem setting toggle) are located together on the front of the equipment.
This equipment is not suitable for use by persons (including children) with limited physical, sensory or
mental capabilities or those who lack experience and/or knowledge, unless they are being supervised
by someone responsible for their safety or have received instructions on how the equipment is to be
used. Children should be supervised to ensure that they do not play with the equipment.
6. Setting the temperature
To facilitate making adjustments, the adjusting toggle of the
temperature control unit of the electric heater has 4 main
settings, which are:
Setting:
Frost protection for the storage tank (up to 30°C)
approx.
40°C
, lukewarm storage water
approx.
60°C
, moderately hot storage water
In order to avoid any accidental scalding with excessively
hot water, excluding this setting is recommended.
The equipment operates in a particularly economic manner at this setting.
The heat losses are low and the build-up of boiler scale is avoided to a large extent.
Lower standby energy consumption
approx.
80°C
, moderately hot storage water
Warning:
The adjusting toggle on the left-hand end has no zero setting or off-switch for the heating of the appli-
ance.
When operating with daytime current, the temperature control should not be set any higher than the
setting pos.
(approx.60°C).
Based upon the hysteresis of the temperature control unit. (±7K) and possible radiation losses (cooling
down of the pipes), the temperature specifications are subject to an accuracy of ±10K.
