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9 - Combustion Chart
This graph shows the relationship between excess air, %Oxygen and %CO2, which is typically obtained
from a flue gas analyzer. The values are based on a dry reading, where the flue gas is extracted and cooled
before the analysis if done.
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
20
JBE(X) Manual
Excess Air vs. % Oxygen and % CO2
40
60
% Excess Air
% CO2 (gas)
80
100
120
Page 52
% Oxygen
% CO2 (#2 oil)
140
160
Section G - Maintenance
180
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