Viessmann Vitocrossal 200 Series Service Instructions Manual page 19

Checking the CO
CO test at the upper heating output (115 to 311 kW)
2
Fig. 12
CO test at the lower heating output (115 to 311 kW)
2
Fig. 13
content
(cont.)
2
5. Check the CO
heating output again.
If the CO
Repeat steps for upper and lower heating output.
6. Hold down buttons
ger than 2 s. Burner switches to operating mode.
1. Press
to "100" (= 100 %).
2. Check the CO
For permissible CO
3. If the CO
■
■
4. Enter actual value into the report in the appendix.
1. Press
down to "0" (lower heating output).
2. Check the CO
For permissible CO
Note
At the lower heating output, the CO
be at least 0.3 % lower than at the upper heating
output. A modified setting must not lead to unhy-
gienic operating conditions.
3. If the CO
■
■
4. Enter actual value into the report in the appendix.
Commissioning, inspection, maintenance
content at the upper and lower
2
content is not within the specified range:
2
and S simultaneously for lon-
until the service indicator has counted up
content at the flue pipe.
2
content, see above table.
2
content needs adjusting:
2
Remove cap .
B
Turn adjusting screw A (3 mm Allen screw) in
small increments until the CO
within the specified range:
Turning clockwise
–
CO content falls.
→
2
– Turning anti-clockwise
CO content rises.
→
2
until the service indicator has counted
content at the flue pipe.
2
content, see above table.
2
content needs adjusting:
2
Undo cover .
B
Turn adjusting screw (Torx 40) in small incre-
A
ments until the CO level falls within the specified
2
range.
– Turning clockwise
CO content rises.
→
2
Turning anti-clockwise
–
CO content falls.
→
2
content falls
2
content must
2
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