Viessmann VITOTRONIC 300 Operating Instructions Manual page 14

Operation — Multi boiler system control
Cascade control unit programming unit
A Menu Lead boiler + cascade
B
75°C
C 85°C
1 2
D
E
600 kW 600 kW
F
Fig. 7
Header
A
Actual common supply temperature
B
Set common supply 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
In the main menu, you can change the boiler sequence
and scan and change all settings for functions made
available by the cascade control unit, such as heating
defaults and time programs.
You can find the menu overview on page 13.
Call up the main menu as follows:
If the screen saver is active (see page 10):
■
Tap the display anywhere and then tap
From anywhere in the menu:
■
Tap and then tap "Menu".
Lead boiler + cascade main menu
Lead boiler Boiler sequence
DHW Information
Fig. 8
Header
A
Footer
F
14
12/06/2014
3 4
0 kW 0 kW
.
1 2
Heating
Service
(cont.)
Boiler operating mode
10:22
The flame symbol indicates the current boiler heating
output:
■ Flame with
⅓
5
■ Flame with
⅔
■ Flame with full length
0 k
Circle symbol:
Solid white:
■
The boiler has been enabled by the cascade control
unit and is operating (boilers 1 and 2 in this exam-
ple).
Solid grey:
■
The boiler is available for generating heat but has
not been called for by the cascade control unit (boiler
3 in this example).
■ Criss-crossed:
The boiler has been disabled for heat generation
(boilers 4 and 5 in this example).
The value below the circle indicates the current output.
Footer buttons:
Returns you to the standard menu.
Moves to the previous step in the menu or can-
cels a setting that has been started.
Calls up the help text.
Calls up fault or service messages.
/ Scrolls through the menu.
A
F
≙
length 1 to 33 %
≙
length 34 to 66 %
≙
66 to 100 %