Vaillant VRT 350f Installation Instructions Manual page 19

The set times for the block marked with !! can be viewed and
changed if you press the right-hand selection button OK in
the display.
5.2.2.5 For the heating circuit
Menu → Timer programs → HEATING 1
–
The time programmes are only effective in the Automatic
mode (→ Page 22). The desired temperature that you set
in the Desired temperatures function applies in each set
time period. Within the time period, the controller switches
to Comfort mode and the heating circuit heats the con-
nected rooms up to the desired day temperature. Out-
side this time period, the controller switches to the set-
back mode and the heating circuit heats the connected
rooms to the desired set-back temperature.
Set the time period for the heating circuit so that each time
period:
–
starts approx. 30 minutes before the time at which the
rooms should reach the desired day temperature.
–
ends approx. 30 minutes before the time at which the
rooms should reach the desired set-back temperature.
5.2.2.6 For domestic hot water generation
Menu → Timer programs → Hot water circuit
–
You can only use the control's functions and setting op-
tions for domestic hot water generation if a domestic hot
water cylinder is connected to the heating installation.
0020131979_01 Operating instructions
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.
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