26
Flow display
Flow
100 %
Flow control
Flow
Set: 85 °C
81 °C
Return
Set: 0 °C
60 °C
Fig.39
The following will be displayed:
■
The current flow temperature and its set value
■
The current return temperature and its set value
■
The position of the buffer cylinder control valve (if
installed)
■
Flow control operating mode - manual mode or auto-
matic, see chapter "Symbols in the boiler operating
menu", page 25
Note
When no electrical return temperature raising facility is
installed, several displays will not be shown.
Flow control:
The boiler flow is regulated automati-
cally. Activate manual mode only in emergencies and
after checking with your heating contractor.
Indication of the oxygen content in the flue gas
Oxygen
Oxygen
Set: 7.0 %
2.8 %
Primary air
0 %
Secondary air
0 %
Fig.40
The following will be displayed:
■
Current oxygen content in the flue gas and its set
value
■
Current air damper position in percent
Oxygen content:
The oxygen content is an important
indicator of the combustion quality. The lower the con-
tent, the more accurate the boiler control.
Air dampers:
The air dampers regulate the amount of
ventilation air for the combustion of the fuel. These
regulate the primary and secondary air separately.
Display of the heating water buffer cylinder for
manually charged boilers
Buffer cylinder
Buffer (°C)
85°
0 %
10:00
Sunday
01/01/1970
Monday
Tuesday
40°
85°
Fig.41
The following will be displayed:
■
Temperatures captured by the buffer temperature
sensors
■
Range of the heating water buffer cylinder up to the
next ignition
■
The position of the buffer cylinder control valve (if
installed)
Display of the heating water buffer cylinder for
automatically charged boilers
Buffer cylinder
Op mode
Outside temperature
6.8 °C
Buffer (°C)
82°
22°
24°
Buffer
level
100 %
Output
default
90 %
33°
23°
Fig.42
The following will be displayed:
■
Filling level of the heating water buffer cylinder
■
Default output of the heating water buffer cylinder
■
Temperatures captured by the buffer temperature
sensors
■
Heating water buffer cylinder operating mode - man-
ual mode or automatic, see chapter "Symbols in the
boiler operating menu", page 25
■
Current outside temperature
Operating mode:
The heating water buffer cylinder is
regulated automatically. Activate manual mode and
consequently unregulated boiler operation only in
emergencies and after checking with your heating con-
tractor.
Boiler operation
Boiler menu
(cont.)
5677 786 GB
Summary of Contents for Vitotrol 350
Page 43: ...43 5677 786 GB...
