Viessmann Vitocrossal 200 Service Instructions For Contractors page 17

Checking the CO
CO test at the lower heating output (87 kW)
2
C
D
E
F
Fig. 12
Fig. 13
content
(cont.)
2
1. Press
down to "0" (lower heating output).
2. Check the CO
Burner output in
kW
Note
The CO
load than it is in full load.
3. If the CO
■
■
4. Enter actual value into the report in the appendix.
Rechecking the values
Regulate to the upper and lower heating output
again using the programming unit in the burner
control unit. If the values do not match the permis-
sible CO
page 16: repeat the steps for the upper and lower
heating output.
5. Hold down S
ger than 2 s. The burner will change to the operat-
ing mode.
Commissioning, inspection, maintenance
until the service display has counted
D
content at the flue pipe.
2
Permissible CO
%
87
content must always be lower in partial
2
content needs adjusting:
2
Undo cover .
B
Turn adjusting screw in small increments
A
(Torx 40). Continue turning until CO
ches the specified range:
– Turning clockwise
CO content rises
→
2
Turning anti-clockwise
–
CO content falls
→
2
content according to the table on
2
E and D simultaneously for lon-
content in
2
8.5 (+0.2/-0.2)
content rea-
2
17