Viessmann Vitocrossal 200 Service Instructions For Contractors page 45

Burner control unit
Menu point "6" is used to change the following operating parameters:
Sub- Parameter
menu
item
1 Maximum operational out-
put
2 Gas type
3 Not assigned
4 Maximum boiler water tem-
perature
5 Integral threshold value of
controller
6 Runtime optimisation
0 Reset all operating parame-
ters to their delivered condi-
tion
Example: to reduce the maximum opera-
tional output, press the following keys:
1. S
longer than 2 s, " " flashes.
2. until "6" is shown under Serv-
ice.
3. S "6" will be displayed under Sta-
tus.
4. S "1" will be shown under Status
and the current value for the
maximum operational output in
% is shown under Service.
(cont.)
Units/scale
% of rated output
0 = NG (natural gas)
1 = LPG (liquid gas)
—
In °C from 5 to 127
In Kmin from 1 to 255
0 = minimum pause
1 = integral method
5. /
6. S
7. S
Burner control unit
Delivered condi-
tion
100 %
0
—
95 °C
30 Kmin
1
for required maximum opera-
tional output.
Note
Observe the modulation range.
See page 79.
to confirm. If applied success-
fully, "1" will be shown under
Service; if it failed, "0" will
appear.
to change to the operating dis-
play.
45