Viessmann VITOLIGNO 300-C Operating Instructions Manual page 33

Blocking times for automatic fuel supply
A blocked suction wand can be purged. A blocked
wand can also be re-enabled without prior purging. If
several wands have been preselected for purging,
these wands will be purged in sequence. Afterwards,
the system will be restarted in standard mode.
Manual purging will only commence if the boiler hop-
per is not full.
Press the following keys:
1. for "Extended menu".
å
2. / for "Charging".
| ~
3. to confirm.
d
4. / for "Changeover unit".
| ~
5. to confirm.
d
The settable suction wands are shown.
An "X" will be shown below blocked suction
wands instead of their suction wand num-
ber.
6. / for selecting the suction wand.
Ù Ú
7. to confirm.
d
8. / for "Purging", "Reset" or "Reset all".
| ~
If "Purging" is selected: The suction wand
will be automatically blocked following purg-
ing.
9. to confirm.
d
The suction wands available for selection
will be redisplayed.
10. Repeat step 6 to 9 for purging or resetting addi-
tional suction wands.
11. until the standard display is shown (see
ä
page 13).
(cont.)
Fuel supply
33