Viessmann Vitocrossal 200 Series Service Instructions Manual page 18

Commissioning, inspection, maintenance
Checking the CO
Checking the CO level at upper heating output (75 and 87 kW)
2
A
Fig. 10
Checking the CO level at lower heating output (75 and 87 kW)
2
Fig. 11
18
content
(cont.)
2
1. Press
to "100" (= 100 %).
2. Check the CO
For permissible CO
3. Check control cables:
■
■
Note
The unconnected end of the hose is open in open
flue operation. For room sealed operation, the end
of the hose is pushed onto the intake adaptor.
4. If the CO
Turn adjusting screw
tinue turning until CO
specified range.
■
■
Note
The adjusting screw has no end-stop.
5. Enter actual value into the report in the appendix.
1. Press
down to "0" (lower heating output).
2. Check the CO
For permissible CO
Note
At the lower heating output, the CO
be at least 0.3 % lower than at the upper heating
output. See the table above. A modified setting
must not lead to unhygienic operating conditions.
3. If the CO
■
■
4. Enter actual value into the report in the appendix.
until the service indicator has counted up
content at the flue pipe.
2
content, see above table.
2
Connection and kink-free routing
Application and seating of retaining clips
content needs adjusting:
2
in small increments. Con-
A
content falls within the
2
Turning clockwise
CO content falls.
→
2
Turning anti-clockwise
CO content rises.
→
2
until the service indicator has counted
content at the flue pipe.
2
content, see above table.
2
content needs adjusting:
2
Undo cover .
B
Turn adjusting screw (Torx 40) in small incre-
A
ments until the CO level falls within the specified
2
range.
– Turning clockwise
CO content rises.
→
2
Turning anti-clockwise
–
CO content falls.
→
2
content must
2