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1. Operating Instructions
1.1 Description of Unit
The open (pressure-less) water heater con-
stantly maintains the water content at the
preset temperature.
On heating, the expansion water drips through
the outlet fitting.
Only fittings for open (pressureless) water
heaters may be installed.
We recommend Stiebel Eltron fittings: for or-
der no. see 1.7 "Special accessories".
1.2 The most important points
in brief
• Set the desired hot water temperature
at the temperature selector (1)
• The unit is heating when the display (2)
lights.
° C
3 5
8 5
E
1.3 Operation
Temperature setting
°C = cold. On this setting, the unit, but not
the fitting or water pipe, is protected
from frost
E
= recommended energy-saving setting
(approx. 60 °C), low limescale forma-
tion
85 = max. temperature setting.
Note:
On request, the engineer can restrict the tem-
perature on the unit (see 2.8 "First Use") so
that the temperature can be set anywhere up
to the temperature limit.
Heating time:
If the entire water content is used, the heating
time is that shown on the diagram.
[min]
15
10
5
0
35 °C
55 °C E 65 °C
Example:
Temperature setting:
65 °C
Heating time:
approx. 9.5 minutes
8
for the user and engineer
Mixed water quantity:
Using the temperature, you set a mixed water
quantity for e.g. 40 °C.
[ l ]
15
10
5
0
40 °C
55 °C E 65 °C
Example:
Temperature setting:
Cold water feed:
Mixed water quantity:
1.4 Important Note
• The water heater must not be pres-
surized. Never block the fitting outlet
and do not use a Perlator or hose with jet
2
controller.
• If the temperature is set higher than 45 °C,
very hot water can flow immediately!
1
• Keep children and the disabled (physi-
cal/mental) away from this unit unless they
are supervised by a person responsible for
their safety or have been given instructions
on how to use it.
• Ensure that children do not adjust the tem-
perature (to a high temperature) on the unit
when playing - Risk of scalding!
• We recommend the use of the temperature
restrictor set by the engineer, unless abso-
lutely necessary otherwise.
• To avoid danger from accidental resetting
of the protective temperature restrictor in
the case of a fault, the unit must not be con-
nected via a timer switch.
Limescale can block the outlet and hence pres-
surize the heater.
Signs of limescale are boiling sounds and
reduced water flow. In this case have the unit
and fitting descaled by an engineer
The thermostat knob may only be removed by
an engineer.
All information in these Operating and Instal-
lation Instructions must be observed. The
instructions contain important information for
safety, operation and maintenance of the unit.
2 kW
85 °C
1.5 Care and Maintenance
To clean the unit, simply wipe with a damp
cloth. Do not use abrasive or aggressive clean-
ing agents.
1.6 What to do if....
85 °C
...there is no hot water:
Check the thermostat, plug and fuse.
65 °C
...there is a boiling sound from the unit:
15 °C
Have the unit and fitting descaled by an en-
approx. 10 l
gineer.
...see also 3. „Fault repair by the user and
engineer".
If an engineer is called for a problem, to help
him resolve this more quickly and efficiently,
please give him the information below on the
unit rating plate (9):
Typ: . . . . . .
Nr.: ...... - .... - ......
26_02_06_0040
1.7
Stiebel Eltron order numbers:
• Two-handle tempering fittings
- sink fitting:
WKM
• Single lever mixer fittings
- sink fitting:
MEK
Maintenance work should only be
performed by an engineer.
Special accessories
22 24 34
22 24 43
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