Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 46

Commissioning, inspection, maintenance
Further details regarding the individual steps
46
(cont.)
4. Check the CO content. Should the
2
actual value deviate by more than
1 % from the above range, imple-
ment the steps from page 45 (pos-
sibly replace the burner).
5. Enter actual values into the service
report.
6. Adjust the upper output.
With a/b in the display, select
"Full load".
7. Check the CO content. Should the
2
actual value deviate by more than
1 % from the above range, imple-
ment the steps from page 45 (pos-
sibly replace the burner).
8. After testing, press d.
9. Enter actual values into the service
report.