Operating the appliance
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TR8500 15/18 | 21/24 | 24/27 DESOAB – 6 720 876 029 (2018/01)
3.1.1 Operating elements and displays
1 Display
2 Comfort keys
3 Rotary selector switch
3.1.2 Display
The display indicates the current
operating state and makes it
possible to change various
settings and retrieve consumption
figures via the menu.
It is designed to save energy
and remains dimmed when
the appliance is not being used.
The background lighting and
the display readout (e. g. 42 °C)
light up if either the water tap is
opened, the rotary selector switch is turned, or a comfort key is pressed.
The colour of the background lighting changes depending on the set
temperature – the colour ranges from blue (cold) to red (hot).
The background lighting switches off about 10 seconds after the last
operation. The display readout (e. g. 42 °C) dims after approximately
2 minutes.
3.1.3 Comfort keys
Briefly pressing the , ,
, keys enables you to
directly select the respective
temperature setting (see chapter
“Setting the water temperature”).
3.1.4 Rotary selector switch
Turning and then pressing
the rotary selector switch allows
you to set the selected water
temperature and use the menu
(see chapter “Using the menu”).
4 Operating the appliance
4.1 Switching the appliance on and off
The continuous-flow heater switches on and heats the water when the
warm water tap is opened. It switches off again if the water tap is closed.
4.2 Setting the water temperature
The water temperature is set by turning the rotary selector switch.
Briefly pressing the , , , comfort keys enables you
to directly select the temperature respectively saved for each key.
The display shows the set temperature as well as the associated text
and symbol.
The preset temperatures saved for each key can be changed.
Example: How to change the “Washing hands” temperature.
• Briefly press the key.
• Turn the rotary selector switch to the desired new temperature.
• Press and hold the key. The new temperature setting is saved
when the display shows the symbol and the text “Washing hands”
as well as a readout of the new temperature.
Note: The comfort keys can also be used by several different users as
individual “Temperature keys”. Select any of the keys and save your own
specific “wellness temperature”.
Note: The factory setting for the water temperature after the first start-
up or a power failure is less than 35 °C.
4.3 Using the menu
The appliance requires less energy to heat the water and therefore
economises on costs. The consumption figures for energy, water and
the resulting costs can be displayed. In order to retrieve the consumption
figures, it is necessary to make some settings via the menu.
Open the menu
Showering
38 °C approx.
Washing hands
35 °C approx.
Bathing
40 °C approx.
Rinsing
48 °C approx.
• Press and hold the rotary selector switch for at least
5 seconds.
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