Viessmann Vitotronic 300 Operating Instructions Manual page 15

Time programs
(continued)
Changing and scanning the time program for domestic hot water heating and the DHW circulation pump
The automatic mode is selected in the time program for domestic hot water and
the DHW circulation pump, i.e. domestic hot water heating takes place in parallel
with the central heating time program, but starts 30 minutes earlier. The DHW
circulation pump runs parallel with the domestic hot water time program.
If you do not require the automatic mode, you can also set individual time pro
grams.
The following example shows the steps required for setting a time program for
domestic hot water heating. Follow the same steps when setting the time pro
gram for the DHW circulation pump (see table on page 12).
To select the automatic mode
(if required)
1. Open the hinged cover on the pro
gramming unit.
2. Press the heating circuit selector
button; the button is lit.
3. B Press B; the "DHW time
program" display appears
in the display window.
4. a/b Press a/b for "Automa
tic?" if "Automatic?" is not
already shown in the dis
play window.
5. d Press d to confirm.
To set an individual time program
1. Open the hinged cover on the pro
gramming unit.
2. Press the heating circuit selector
button; the button is lit.
3. B Press B; the "DHW time
program" display appears
in the display window.
4. a/b Press a/b for "Indivi
dual?" if "Individual?" is
not already shown in the
display window.
5. d Press d to confirm.
Settings
If you wish to exit the time program
setting mode, press B again (see
page 17).
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