Viessmann VITOCROSSAL 200 Service Instructions Manual page 14

Commissioning, inspection, maintenance
Further details regarding the individual steps
Checking the CO
Preparing the test
CO test at the upper heating output (87 kW)
2
14
content
2
1. Open the gas shut-off valve.
2. Start the burner.
3. Press "S" E and "-" D simultane-
ously.
Display C will then show the follow-
ing:
■ Under Status: "d" (= control stop)
■ Under Service: Modulation level in
% ("00." = 100 % = upper heating
output, "00" = 0 % = lower heating
output)
1. Press "+" F until the service display
has incremented to "00." (= 100 %).
2. Check the CO
2
pipe.
Burner out-
put in kW
87
Note
The unconnected end of the hose is
open in open flue operation. For bal-
anced flue operation, it is pushed
onto the inlet adaptor.
(cont.)
content at the flue
Permissible CO
content in %
9.0 (±0.3)
2