Customer Service - Siemens DS20022 Gebrauchsanleitung

Operation during the off-peak period
(off-peak power)
This is the most cost‑effective mode of operation.
Set the required water temperature with the temperature
selector switch 1.
The power supply company activates off‑peak power by
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means of a signal in the power system. Primary heating
then switches on automatically.
You will then have hot‑water during the day.
Additional operation during the peak period
If the volume of hot‑water provided during the night is insuf‑
ficient, water can also be heated during the peak period:
Press push‑button 2.
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The water is heated to the temperature set on the tempera‑
ture selector switch 1. When the selected temperature has
been reached, the peak‑rate heating automatically switches
off.
Set a higher temperature with the temperature selector
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switch 1 if you frequently need to reheat water during the
peak period.
As a result, you will have a larger volume of mixed water.
Rotate the temperature selector switch 1 to position "•"
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if the floor‑standing water heater will not be heated for a
prolonged period.
This setting protects the appliance from freezing.
This does not apply to the fittings and pipes in the cold-
water inlet!
Checking the safety valve
During the heating process, expansion water must drip out
of the safety valve outlet 3.
For reasons of safety the outlet must not be blocked.
Check that the safety valve is functioning properly
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at least once a month.
Rotate ventilation screw 4 until the valve opens and a
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powerful jet of water comes out of the outlet 3.
Close the valve again with the ventilation screw.
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If the safety valve does not function as described, rotate
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the temperature selector switch to position "•" and con‑
tact a qualified professional.
Saving energy
The appliance operates particularly economically at low
temperatures. Therefore, only set the temperature which you
require.
The floor‑standing water heater operates most economically
in position "E" (approx. 60 °C), even when large amounts of
hot‑water are required. At higher water temperatures, the
appliance calcifies at an increased rate, resulting in greater
heat losses!
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Decalcifying
Inspect the fittings regularly for lime scale deposits and
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descale with commercially available descaling agents.
Actuate the safety valve regularly to remove the lime scale
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(see "Checking the safety valve").
The level of lime scale deposited from the water is increased
or reduced at higher temperatures depending on the local
water quality (hardness level I/II/III; soft, medium or hard).
It is deposited on the interior of the water tank and on the
heating element as boiler scale and influences the service
life of the appliance.
The appliance must therefore be checked and decalcified
regularly by a qualified professional.
Please schedule your first and/or next maintenance visit
( inspection of the protection anode and descaling) with your
qualified specialist.
Maintenance work may only be carried out by a qualified
professional. Improper repairs may put the user in extreme
danger.
Cleaning
Simply wipe the appliance with a damp cloth.
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Do not use acidic or abrasive cleaning materials.

Customer Service

In the event of a malfunction, unplug the appliance from
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the power supply (pull out the fuse or activate the circuit
breaker) and contact customer service.
Details can be obtained from a Siemens customer service
centre regarding your nearest customer service centre or
authorised repair shop.
We ask you to always provide the E-No. and the FD-No.
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of your appliance when calling in a customer service
engineer.
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