Viessmann VITOCROSSAL 200 Service Instructions Manual page 17

Further details regarding the individual steps
CO test at the lower heating output
2
(115 kW to 311 kW)
Commissioning, inspection, maintenance
(cont.)
3. If the CO content must be adjusted:
2
■ Remove cap B.
■ Turn setting screw A in small
increments (3 mm Allen key) until
the CO content lies within the
2
specified range:
– Turning clockwise
→ CO content falls
2
– Turning anti-clockwise
→ CO content rises
2
4. Record the actual value in the report
(on page 61).
1. Press "-" D until the service display
has decremented to "00" (lower heat-
ing output).
2. Check the CO
2
pipe. For permissible CO
see the table on page 16.
content at the flue
content,
2
17