Viessmann VITOTRONIC 300 Operating Instructions Manual page 15

Programming unit of the lag boiler control unit
A screensaver appears after opening the control unit,
or if there has not been any operation for some time:
Lag boiler
Fig. 9
Default display
Call up the default display as follows:
■ If the screen saver is active (see page 15):
Tap the display anywhere.
■ You are now in the main menu (see page 15).
Tap .
Menu Lag boiler
A
D
Boiler
temperature
75°
B
C Set: 85°
F
Fig. 10
Header
A
Actual boiler water temperature
B
Set boiler water temperature
C
Boiler number in the boiler sequence
D
Details of the boiler operating mode (see the fol-
E
lowing chapter)
Footer
F
Main menu
You can make scans and settings in the main menu.
You can find the menu overview on page 49.
Call up the main menu as follows:
If the screen saver is active (see page 15):
■
Tap the display anywhere and then tap
■ From anywhere in the menu:
Tap and then tap "Menu".
3
24/06/2014
Output
600 kW
2
E
.
Operation
Each programming unit is equipped with a
touchscreen. To make adjustments and scan informa-
tion, tap the on-screen buttons.
Boiler operating mode
The flame symbol indicates the current boiler heating
output:
Flame with
■
⅓
Flame with
■
⅔
■ Flame with full length
11:38
Circle symbol:
Solid white:
■
The boiler has been enabled by the cascade control
unit and is operating.
■ Solid grey:
The boiler is available for generating heat but has
not been called for by the cascade control unit.
Criss-crossed:
■
The boiler is not available for generating heat.
In the Output field, the current output level is dis-
played.
Multi boiler system control
—
≙
length 1 to 33 %
≙
length 34 to 66 %
≙
66 to 100 %
15