Parameter Level; Boiler Settings - Viessmann VITOFLEX 300-UF Operating Instructions Manual

Parameter level

From some subsection pages, you reach the corre-
sponding parameter level. The parameters may be
assigned to several tabs.
The number of parameters varies depending on the
system configuration.
The parameter values can be changed by inputting
new values in the fields highlighted in white.
Call up the "parameter level" as follows:

Boiler settings

Flame
"Settings" tab
During flue gas recirculation, flue gas is mixed in with
the supply air. This lowers the flame temperature, due
to the reduced oxygen content in the ventilation air.
Combustion efficiency increases as a result. The pro-
portion of flue gas fed into the combustion chamber
depends on the output.
Parameter Description
Combustion Set value for combustion chamber temperature
chamber tempera-
ture
Combustion Maximum combustion chamber temperature
chamber tempera-
ture, maximum
Flue gas tempera- Combustion chamber temperature at which the sys-
ture, burnout -> tem switches from operating phase "Burnout" to
OFF operating phase "OFF".
Recirculation fan, Upper limit for the control range of the recirculation
full load fan
Recirculation fan, Lower limit for the control range of the recirculation
partial load fan
Current set value Displays the current set value for the recirculation fan.
Sliding value between set value for recirculation fan at full load and set value at partial load.
Heat distribution settings
DHW
"Temperatures" tab
Parameter Description
Operating status Display of the current operating phase for heating
Operating mode Displays the set operating mode for heating
In the subsection pages, tap on the
!
Please note
Incorrect parameter settings can cause damage
to the heating system.
Observe the setting range.
Setting
in
°C
°C
°C
%
%
Setting in Setting
Settings
button
¸
Setting range Standard
value
450 up to maxi- 750
mum combus-
tion chamber
temperature
-50
500 to 1050 850
200 to 400 250
11 to 100 70
10 to recircula- 20
tion fan, full
load
Standard
range value
17