Unit installation

14
Checking the CO
2
content
Preparing the test 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)
CO
2
test at the upper heating output (87 kW)
1.
Press "+" F until the service display
has incremented to "00." (= 100 %).
2. Check the CO
2
content at the flue
pipe.
Burner out-
put in kW
Permissible CO
2
content in %
87 9.0 (±0.3)
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.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 907 GB