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Burner operation
3.1
Combustion adjustment
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment and testing must be carried
out observing the instruction manual of the boiler, including verification of the CO and CO
peratures and the average temperature of the water in the boiler.
Nozzle
GPH
Angle
0.65
60° W
0.65
60° W
0.60
60° W
0.55
60° W
0.55
60° W
0.75
60° W
0.75
60° W
0.65
60° W
0.60
60° W
0.55
60° W
0.55
60° W
0.40
60° W
3.2
Combustion check
An analyser will be used to perform this check. The CO
Case
CO
Smoke
2
0
12 to 13
1
12 to 13
> 13
2
CO
2
< 12
3
CO
2
3.3
Pump pressure
The pump leaves the factory set at 12 bar.
Burner operation
Pump
pressure
bar
14
12
12
12
11
13.5
12
12
12
12
12
14
Corrective actions
ST = 0
No change.
ST > 1
Check the adjustment parameters. Check sealing between the blast tube, the boiler and the
flue and check that the boiler door is tight.
Check penetration of the blast tube into the furnace. If the parameters are correct, change the
nozzle.
Turn the button (point V) to open the air damper to discharge a half grade or 3 taps (e.g. from
3 to 3.5 to obtain CO
Check the blackening index (if blackening index > 1 return to case N° 1).
Check cold start
Close the air damper. Check the blackening index (if blackening index > 1 return to case N° 1).
Check cold start.
Burner
output
Notch
kg/h ± 4%
(Fig. 19)
2.92
2.2
2.58
2.2
2.25
1.8
2.17
1.5
2.08
1.5
2.93
2.2
2.79
2.2
2.48
2.2
2.19
1.8
2.08
1.5
1.88
1.2
1.55
1.0
measured must be 1 % lower than the desired values (12 to 13 % CO
2
of between 12 and 13).
2
11
GB
concentration in the flue gases, their tem-
2
Combustion
head setting
mm
(D, Fig. 21)
12
12
11
10
10
12
12
12
11
10
9
8
Air damper
adjustment
Notch
6.1
2.1
4.8
1.5
1.3
6.1
5.9
5.0
4.5
4.3
3.8
2.2
Tab. A
).
2
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