Viessmann Vitocrossal 200 Service Instructions Manual page 15

Further details regarding the individual steps
CO test at the lower output (87 kW)
2
Initial start-up, inspection, maintenance
(cont.)
3. If the CO content must be
2
adjusted:
Turn adjusting screw A in small
increments until the CO
reaches the stipulated range.
Turning clockwise
CO content drops
2
Turning anti clockwise
CO content rises
2
Note
The adjusting screw has no end
stop. The starting postion will be
reached again after four turns.
4. Record the actual value in the
report (on page 60).
1. Press " "D until the service dis-
play has decremented to "00"
(lower output).
content
2
15