Vaillant VRT 350, Operating Instructions Manual, Page: 23 / 36

Operating and display functions 5
0020135485_00 VRT 350 Operating instructions
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5.2.7 Changing over to daylight saving time
«Menu»
→
«Basic settings»
→
«Date/Time»
→
«Day-light
savings»
–
You can use this function to set whether the controller
automatically changes over to daylight saving time, or
whether you want to do this manually.
–
«Auto»: The controller automatically changes over to
daylight saving time.
–
«Off»: You have to change over to daylight saving time
manually.
Note
Daylight saving time means Central European
summer time: Start = last Sunday in March, End
= last Sunday in October.
5.2.8 Setting the display contrast
«Menu»
→
«Basic settings»
→
«Display»
→
«Display con-
trast»
–
You can set the display contrast in relation to the bright-
ness of the surroundings, to ensure that the display is
clearly legible.
5.2.9 Setting the offset room temperature
«Menu»
→
«Basic settings»
→
«Offset»
→
«Room temperat-
ure»
–
A thermometer is integrated in the controller for meas-
uring the room temperature. If you have another ther-
mometer in the same room and compare the values with
each other, the temperature values may constantly dif-
fer from each other.
Example
One room thermometer constantly shows a temperature
that is one degree higher than the current room temperat-
ure on the controller display. With the «Room temperature»
function, you can offset the temperature difference in the
controller display by setting a correction value of +1 K (1 K
corresponds to 1 °C). K (Kelvin) is a unit for the temperature
difference. Inputting a correction value affects the room
temperature compensator.
5.2.10 Changing heating circuit naming
«Menu»
→
«Basic settings»
→
«Change heating circuit nam-
ing»
–
You can now modify the factory-specified heating circuit
names as you wish. The name is limited to 10 characters.
5.2.11 Resetting to factory setting
You can reset the settings for the «Time programmes» or
for «Everything» to the factory setting.
Timer programs
«Menu»
→
«Basic settings»
→
«Factory reset»
→
«Time pro-
grammes»
–
With «Timer programs», you reset all the settings you
have made in the «Timer programs» function to the de-
fault setting. All other settings that include times, such
as «Date/Time», are not affected.
While the controller is resetting the timer program set-
tings to the default settings, «In process» is shown on the
display. The basic display is then displayed.
Everything
Caution!
Risk of a malfunction.
The «Everything» function restores all
settings to the factory settings, including
those set by the skilled tradesman. It may
be the case that it is no longer possible to
operate the heating installation after this.
▶ Arrange for the skilled tradesman to
reset all settings to factory settings.
«Menu»
→
«Basic settings»
→
«Factory reset»
→
«Everything»
–
While the controller is resetting the settings to the fact-
ory settings, «in process» is shown on the display. Then
the installation assistant appears in the display, which
only the skilled tradesman may operate.
5.2.12 Installer level
The Installer level is reserved for the skilled tradesman and
is therefore protected by an access code. At this operating
level, the skilled tradesman can make the necessary set-
tings.
5.3 Operating modes
Use the right-hand selector button, «Operating mode» to
set the mode directly.
The path details given at the start of each mode description
indicate how you reach this mode in the menu structure.