Viessmann Vitocrossal 200 Service Instructions Manual page 17

Further details regarding the individual steps
CO test at the lower output (115 kW to 311 kW)
2
Initial start-up, inspection, maintenance
(cont.)
3. If the CO content must be
2
adjusted:
Remove cap B.
Turn adjusting screw A in small
increments (3 mm Allen key ) until
the CO content reaches the sti-
2
pulated range:
Turning clockwise
CO content drops
2
Turning anti clockwise
CO content rises
2
4. Record the actual value in the
report (on page 60).
1. Press " "D until the service display
has decremented to "00" (lower
output).
2. Check the CO content at the flue
2
pipe. For permissible CO
see the table on page 16.
content,
2
17