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17
Relationship between CO
2
value and Wobbe index
Gas type
Wobbe index
CO
2
setting
%
kWh/m
3
MJ/m
3
Natural gas
E
16.10
58.00
11.0
15.00
54.00
9.7
14.00
50.40
8.9
13.00
46.80
8.2
12.00
43.20
7.4
Permissible CO
2
content (depending on the Wobbe index of the gas type)
Gas type
CO
2
con-
tent
Rated heating output in kW
at
75 and 87
115
142
186
246
311
Natural gas
E
upper heat-
ing output
(100 %)
7.1 - 10.2 % 7.0 - 10.1 % 7.0 - 10.1 % 7.1 - 10.2 % 7.1 - 10.2 %
7.1 - 10.2 %
Actual value at upper heating output
minus
lower heat-
ing output
(0 %)
0.3 - 0.7 %
0.3 - 0.7 %
0.3 - 0.7 %
0.4 - 0.8 %
0.7 - 1.0 %
0.4 - 0.8 %
Natural gas
H
upper heat-
ing output
(100 %)
8.0 - 10.2 % 7.9 - 10.1 % 7.9 - 10.1 % 8.0 - 10.2 % 8.0 - 10.2 %
8.0 - 10.2 %
Actual value at upper heating output
minus
lower heat-
ing output
(0 %)
0.3 - 0.7 %
0.3 - 0.7 %
0.3 - 0.7 %
0.4 - 0.8 %
0.7 - 1.0 %
0.4 - 0.8 %
Natural gas
LL
upper heat-
ing output
(100 %)
7.2 - 10.0 %
7.1 - 9.9 %
7.1 - 9.9 % 7.2 - 10.0 % 7.2 - 10.0 %
7.2 - 10.0 %
Actual value at upper heating output
minus
lower heat-
ing output
(0 %)
0.3 - 0.7 %
0.3 - 0.7 %
0.3 - 0.7 %
0.4 - 0.8 %
0.7 - 1.0 %
0.4 - 0.8 %
Natural gas
L
upper heat-
ing output
(100 %)
8.3 - 10.0 %
8.2 - 9.9 %
8.2 - 9.9 % 8.3 - 10.0 % 8.3 - 10.0 %
8.3 - 10.0 %
Actual value at upper heating output
minus
lower heat-
ing output
(0 %)
0.3 - 0.7 %
0.3 - 0.7 %
0.3 - 0.7 %
0.4 - 0.8 %
0.7 - 1.0 %
0.4 - 0.8 %
LPG P
upper heat-
ing output
(100 %)
–
–
–
9.6 - 11.6 % 9.6 - 11.6 %
9.6 - 11.6 %
Actual value at upper heating output
minus
lower heat-
ing output
(0 %)
–
–
–
1.0 - 2.0 %
1.0 - 2.0 %
1.0 - 2.0 %
Commissioning, inspection, maintenance
Checking the CO
2
content
(cont.)
5831036