Vaillant VRT 350f Operating Instructions Manual page 27

Individual days
vary from
Mo - Su block.
Back
If you press the right-hand selection button Select, a mes-
sage appears on the display which informs you about differ-
ent periods. You do not need to adjust the times.
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 Auto-
matic mode (→ Page 31). The desired temperature that
you set in the Desired temperatures function applies
in each set time period. Within the time period, the con-
troller switches to Comfort mode and the heating cir-
cuit heats the connected rooms up to the desired day
temperature. Outside this time period, the controller
switches to the set-back mode and the heating circuit
0020131979_00 VRT 350f Operating instructions
Operating and display functions 5
heats the connected rooms to the desired set-back tem-
perature.
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
OK
rooms should reach the desired set-back temperature.
5.2.2.6 For hot water generation
Menu → Timer programs → Hot water circuit
– You can only use the controller's functions and setting
options for hot water generation if a domestic hot water
cylinder is connected to the heating installation.
The timer programs are only effective for hot water gener-
ation in the Automatic mode and Summer mode operating
modes.
In each set time period, the desired Hot water circuit tem-
perature that you set in the Desired temperatures function
applies. If, during the time period, the cylinder temperature
drops by 5 °C below the desired Hot water circuit value,
the domestic hot water cylinder is heated back up to the de-
sired Hot water circuit temperature (recharged). At the
end of a time period, the controller switches the 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:
27