Viessmann Vitodens 100-W Installation And Service Instructions Manual page 23

Further details regarding the individual steps
Commissioning, inspection, maintenance
(cont.)
4. Adjust the upper output:
Turn rotary selector "tr" to the con-
trol range on the right.
The display shows 5 bars for upper
output.
5. Measure the CO content for upper
2
output.
The CO content must be between
2
7.4 and 10.5 %.
6. Adjust the lower output:
Turn rotary selector "tr" to the left
control range.
The display shows 1 bar for lower
output.
7. Test the CO content for lower out-
2
put.
The CO content must be between
2
7.4 and 10.5 %.
8. If the CO content is not within the
2
given range, check the flue gas/ven-
tilation air system for tightness.
Remedy any leaks.
9. Shut the boiler down, remove flue gas
analyser and close flue gas port A.
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