Vaillant VRT 350f Operating Instructions Manual page 28

5 Operating and display functions
– Starts approx. 30 minutes before the time at which the
water in the domestic hot water cylinder should have
reached the desired Hot water circuit temperature.
– Ends approx. 30 minutes before the time at which you no
longer need any hot water.
5.2.3 Days away from home scheduling
Menu → Days away from home scheduling → HEATING 1
– With this function, you can set a period with a start and
end date and a temperature for days during which you
are away from home. Thus, you do not need to change
time periods for which you have set, for example, no re-
duction of the desired temperature over the course of
the day.
Frost protection is activated.
While the Days away from home scheduling function is
activated, it has priority over the set operating mode. At the
end of the specified period, or if you cancel the function, the
heating system returns to the pre-set mode.
5.2.4 Language selection
Note
During installation, the skilled tradesman
sets the desired language. All functions are
displayed in the set language.
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Menu → Basic settings → Language
– If the language of e.g. a service technician differs from
the set language, you can change the language using this
function.
Caution.
It may not be possible to operate the
controller if the wrong language is se-
lected.
If you select a language that you do not
understand, you can no longer read the text
in the controller display and can no longer
operate the controller.
▶ Only select a language that you under-
stand.
However, if the text in the display should appear in a lan-
guage that you do not understand, you can set a different
language.
5.2.4.1 Set a language that you understand
1. Press the left-hand selection button repeatedly until the
basic display appears.
2. Press the left-hand selection button again.
3. Rotate the rotary knob clockwise until the dotted line
appears.
Operating instructions VRT 350f 0020131979_00