Vaillant VRT 350 Operating Instructions Manual page 18

For domestic hot water generation, the time programmes are
only effective in Automatic mode.
In each time period set, the desired DHW circuit temperat-
ure applies. At the end of a time period, the control switches
the domestic hot water generation off until the start of the
next time period.
Set the time periods for hot water generation so that each
time period:
–
starts approx. 30 minutes before the time at which the
water in the domestic hot water cylinder should have
reached the desired DHW 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
–
You can use this function to 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 installation returns to the pre-set mode.
18
5.2.4 Select language
Note
During installation, the competent person sets the
desired language. All functions are displayed in
the set language.
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 con-
trol if the wrong language is selected.
If you select a language that you do not un-
derstand, you can no longer read the text in
the control display and can no longer operate
the control.
▶
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.
Operating instructions 0020135485_02