Viessmann Vitotronic 300 Operating Instructions Manual page 19

Setting the energy saving mode for the holiday period
Departure date
Fr
Return date
Tu
H When the "w" heating program is
set (see page 7), only frost protec
tion of the heating system takes
place during the holiday program.
Domestic hot water heating takes
place according to the preset time
program on the dates of your de
parture and return.
1. Open the cover on the program
ming unit.
2. H Press H; the "Holiday
program" display appears
in the display window.
3. d Press d; the display
changes to the "Departure
date" (current day of the
week).
4. a/b Press a/b until the re
quired departure date ap
pears.
5. d Press d to confirm;
the display changes to the
"Return date" (the return
date shown is the day fol
lowing the entered depar
ture date).
6. a/b Press a/b until the re
quired return date ap
pears.
7. d Press d to confirm;
the display changes and
shows the boiler tempera
ture.
8. To set the temperature for the du
ration of the holiday program
(only in the "rw" heating pro
gram):
H Press E.
H Set the required value with the
a or b button.
H Confirm by pressing d; the
temperature value stops flashing
and is stored.
9. Close the hinged cover on the pro
gramming unit.
After the departure date, "Holiday
program" and the current date ap
pear in the display window.
On the return date, the boiler tem
perature appears in the display win
dow.
Settings
(continued)
If you want to erase the holiday
program during the setting pro
cedure, press H again and con
firm "Erase? Yes" with d.
This temperature also applies to
the reduced room temperature out
side the holiday program.
If you want to cancel the holiday
program before the selected return
date, press H again and confirm
"Erase? Yes" with d.
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