Viessmann VITOLIGNO 300-C Operating Instructions Manual page 16

Control
Menu Structure of the Control Unit
Screensaver during operating phase "Boiler load operation"
Legend
A Boiler supply temperature 163°F (73°C)
B Operating phase
C Boiler return temperature 133°F (56°C)
D Flue gas temperature 275°F (135°C)
E Dialogue line
F Boiler heating output
G Feed delivery rate (pellets)
H Pellet hopper fill level (where installed)
Screensaver during operating phase "Buffer drawing"
Legend
A Operating phase
B Heating water buffer tank heat-up condition in %
C Dialogue line
D Heating water buffer tank temperature - bottom,
93°F (34°C)
E Heating water buffer tank temperature - centre,
144°F (62°C)
F Heating water buffer tank temperature - top,
163°F (73°C)
16
(continued)
Screensaver
The screensaver will be enabled if no adjustments

are made on the programming unit for a few minutes.
Depending on the operating phase, the screensaver

will inform you about the current values of the boiler
or heating water buffer tank.
Press any key. This takes you to the standard menu
(see page 15).
"Help" menu
You can view an abridged guide giving an explanation
of the controls and information about heating circuit
selection.
Call up the short guide as follows:
From anywhere in the menu:

Call up the "Help" menu point by pressing "?".
Vitoligno 300-C Operating