Maintenance Instructions; Checking The Protective Anode - Siemens DS20022 Gebrauchsanleitung

Maintenance instructions

Maintenance work must only be carried out by a
qualified professional, pursuant to VD E0700 or
local regulations.
The appliance must be isolated from the power supply
■
in all poles.
Decalcifying
Do not use a decalcifying pump. This would decalcify the
heating flange but would damage the protective anode and
the interior wall of the tank.
Procedure:
Disconnect the floor‑standing water heater from the
■
power supply.
Remove the switchroom cap.
■
Disconnect the heating flange and remove.
■
Decalcify the heating flange.
■
Remove loose pieces of lime from the floor‑standing
■
water heater.
Fit the heating flange and connect in accordance with the
■
circuit diagram.
Fit the switchroom cap.
■

Checking the protective anode

The protective anode must be removed prior to checking.
It is situated next to the hot‑water outlet nozzle and is
covered by the thermal insulation (recognizable by a
protrusion).
Unzip the protective jacket. Cut out the thermal insulation
■
with a knife.
Screw out the protective anode and check.
■
If the protective anode is used up, it must be replaced with a
new one.
If there is insufficient space to install a pole anode, install a
chain anode.
The protective anode must have a good metallic conduction
with the floor‑standing water heater. Cover the screwed con‑
nection of the anode with the piece of thermal insulation
material which was previously cut out.
Zip up the protective jacket.
■
Note: The protective anode, located in the floor‑standing
■
water heater, must be checked for the first time after two
years and replaced if necessary. The qualified professional
is familiar with the local water quality and will specify
when the next maintenance check should be carried out.
14
en
Safety valve
Vent the safety valve until the full water jet is flowing out.
■
Close the safety valve after carrying out the check.
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Safety equipment
VII.
5 Thermal cut‑out
6 Corrosion protection anode resistor
7 Heating flange
8 Reset button
The thermostat and thermal cut‑out are located together
in the heating flange. If the thermal cutout disconnects the
appliance due to a malfunction, the whole unit must always
be replaced. The cause of the malfunction must be elimi‑
nated by a qualified professional.
The heating flange is connected with the tank via the corro‑
sion protection anode resistor. The corrosion protection an‑
ode resistor serves to equalise electrical potential differences
and prevents current‑related corrosion to the heating ele‑
ments. The anode resistor is not to be damaged or removed
during servicing (for mounting position, refer to figure).
Disposal
This appliance is labelled in accordance with Euro‑
pean Directive 2012/19/EU concerning used elec‑
trical and electronic appliances (waste electrical
and electronic equipment – WEEE).
The guideline determines the framework for the
return and recycling of used appliances as appli‑
cable throughout the EU.
Please ask your specialist retailer about current
disposal facilities.
Guarantee
The guarantee conditions for this appliance are as defined by
our representative in the country in which it is sold.
Details regarding these conditions can be obtained from the
dealer from whom the appliance was purchased. The bill of
sale or receipt must be produced when making any claim
under the terms of this guarantee.
Subject to change without notice.