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Gas throughput table for gas volume adjustment according to the volume flow method
Gas fired
Thermal
Rated
boilers
output
thermal
(gas fired
kW
combi
boilers)
18.0
15.3
CGU-2(K) -18
13.0
10.9
8.0
24.0
20.4
CGU-2(K) -24
16.0
13.0
10.9
18.0
15.3
CGG-2(K) -18
13.0
10.9
8.0
24.0
20.4
CGG-2(K) -24
16.0
13.0
10.9
Gas volume adjustment check
If the actual net calorific value is known, the gas volume can be checked with a stop watch and a gas meter
according to the following formula:
Gas throughput [l/min] =
Boiler certification
Boiler
Type
B
CGU-2(K)
11BS
B
, C
,
32
12x
CGG-2(K)
C
, C
32x
42x
Balanced flue B32 required
1)
The gas fired boiler corresponds to protection level IP X4D and can be installed in bathrooms in safety zone 1 and
more widely in accordance with VDE 0100 Part 701.
If the actual values fall outside these limits, readjust the gas valve (see the respective chapter),
Note
otherwise material losses at the boiler and incorrect functions can result.
Otherwise continue under the point "Removing the test equipment again".
3062347_0309
Check nozzle pressure
load
kW
25.9(7.2) 27.4(7.6) 28.8(8.0) 30.2(8.4) 31.7(8.8) 33.1(9.2) 34.6(9.6) 36.0(10.0) 37.4(10.4) 38.9(10.8) 40.3(11.2)
28.8(8.0) 30.2(8.4) 31.7(8.8) 33.8(9.4) 35.3(9.8) 36.7(10.2) 38.1(10.6) 40.0(11.1) 41.8(11.6) 43.2(12.0) 4.6(12.4)
20.2
47.0
44.5
17.2
40.0
37.9
14.8
34.3
32.5
12.5
28.9
27.4
8.8
21.3
20.2
26.5
61.3
58.1
22.5
52.8
40.0
18.1
41.9
39.7
14.9
34.5
32.7
12.0
28.9
27.4
19.7
45.6
43.5
16.7
38.6
36.6
14.2
32.8
31.1
12.0
27.8
26.3
8.5
19.6
18.6
26.5
61.3
58.2
22.5
52.1
49.3
17.7
41.0
38.8
14.0
32.4
30.7
11.7
27.0
25.6
Rated thermal load [kW] x 1 000
Net calorific value H
Category
II
2H3P
II
2H3P
Gas throughput in l/min (1013 mbar; 15 °C)
Natural gas H
with an operational net calorific value of H
equivalent of a gross calorific value of H
42.3
40.3
38.4
36.8
36.0
34.3
32.8
31.3
30.8
29.4
28.0
26.8
26.0
24.8
23.7
22.6
19.2
18.3
17.4
16.7
55.2
52.6
50.2
48.0
47.5
45.2
43.2
41.3
37.7
35.9
34.3
32.8
31.0
29.6
28.2
27.0
26.0
24.8
23.7
22.6
41.0
39.9
37.3
35.7
34.8
33.1
31.7
30.2
29.6
28.2
26.9
25.8
25.0
23.8
22.7
21.8
17.7
16.8
16.1
15.4
55.2
52.6
50.2
48.0
46.9
44.6
42.6
40.8
36.9
35.1
33.5
32.1
29.2
27.7
26.5
25.4
24.4
23.2
22.1
21.2
[kWh/m³] x 60
i
Operating mode
Open
Open
balanced
flue
flue
X
X
X
1)
in MJ/m³ (kWh/m³)
i
in MJ/m³ (kWh/m³)
S
35.2
33.8
32.5
30.0
28.8
27.7
25.8
24.7
23.7
21.6
20.9
20.0
16.0
15.4
14.7
46.1
44.3
42.4
39.7
38.0
36.5
31.5
30.2
29.0
25.9
24.8
23.9
21.8
20.9
20.0
34.1
32.8
31.5
29.0
27.8
26.7
24.8
23.7
22.8
20.6
20.0
19.3
14.8
14.2
13.6
49.0
44.2
42.5
39.1
37.5
36.6
30.8
29.5
28.4
24.3
23.3
22.4
20.3
19.5
18.8
To be connected to
Air /
Chimney
flue gas
chimney
X
X
X
1)
31.3
30.2
26.7
25.7
22.8
22.1
19.3
18.6
14.2
13.7
40.8
39.5
35.1
34.0
27.9
27.0
23.0
22.2
19.3
18.6
30.4
29.3
25.8
24.8
21.9
21.2
18.5
17.9
13.1
12.7
40.9
39.4
34.8
33.5
27.4
26.3
21.6
20.9
18.1
17.4
Balanced
flue system
X
37
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