Viessmann Vitocrossal 200 Service Instructions For Contractors page 20

Commissioning, inspection, maintenance
Further details regarding the individual steps
3. Simultaneously hold down S E and
D for longer than 2 s.
Display C will then show the follow-
ing:
CO test at upper heating output
2
1. Press F until the service indicator
has incremented to "100" (= 100 %).
Rated heating
output
P (50/30 °C)
max
in kW
400
500
620
3. If the CO content must be adjusted:
2
Remove cap B and turn setting
screw A in small steps (Allen key
3 mm) until the CO
the specified range:
■ Turning clockwise → CO
drops,
■ Turning anticlockwise → CO
tent increases.
20
Rated heat input
Q (H )
max i
in kW
381
474
593
content is within
2
content
2
con-
2
■ Under Status: "P" (= controlled
stop)
■ Under Service: Modulation level in
% ("100" = 100 % = upper heating
output, "0" = 0 % = lower heating
output)
2. Check the CO
pipe.
Permissible CO
2
Natural gas E and
LL
in %
8.8 ±0.2
4. Record the actual value in the report
(on page 74).
(cont.)
content at the flue
2
content
LPG P
10.5 ±0.2
in %