Checking The Co 2 Content - Viessmann VITOCROSSAL 200 Service Instructions Manual

Further details regarding the individual steps
Checking the CO
Preparing the test
B A
C
D
E
F
CO test at the upper heating output
2
1. Press F until the service display
has counted up to "100" (= 100 %).
content
2
Commissioning, inspection, maintenance
(cont.)
1. Open the gas shut-off valve.
2. Start the burner with the emissions
test switch enabled at the control
unit.
3. Simultaneously hold down S E and
D for longer than 2 s.
Display C will then show the follow-
ing:
■ Under Status: "P" (= controlled
stop)
■ Under Service: Modulation level in
% ("100" = 100 % = upper heating
output, "0" = 0 % = lower heating
output)
2. Check the CO
2
pipe.
content at the flue
27