Combustion Adjustment - Riello Burners 40 G20S Manuel D'entretien

COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjust-
ment and testing must be carried out observing the instruction manual of the boiler, including verifica-
tion of the CO and CO
temperature of the water in the boiler.
To suit the required appliance output, fit the nozzle, the settings of the combustion head and the air
damper opening in accordance with the following schedule.
Nozzle
pressure
1
GPH Angle
2.00 60°
2.25 60°
2.50 60°
3.00 60°
3.50 60°
4.00 60°
4.50 60°
1
NOZZLES RECOMMENDED: Monarch type R - PLP
Angle :
2
COMBUSTION HEAD SETTING : This is done when fitting the nozzle, with the blast tube
Terminal plane of the blast tube
D5284
Blast tube
2354
concentration in the flue gases, their temperatures and the average
2
Pump Burner
output
kg/h ± 4%
bar
11 8.6
12 9.7
12 10.7
12 12.9
12 15.0
12 17.2
12 19.3
Delavan type B - W
Steinen type S - SS
Danfoss type S - B
60° : In most cases. Particularly suited to avoid flame-detach-
ment during ignition.
For narrow and long combustion-chambers it is advisable
to use full cone nozzles (e.g. 60° B).
removed. It depends on the output of the burner and is
carried out by rotating the regulating rod, till the terminal
plane of the blast tube is level with the set-point, as indi-
cated in the schedule.
2
5 3 1
Regulating rod
Shutter
Comb. head Air damper adjustment
adjustment
2
Set-point
1
1.5
2
2.5
3.5
4
6
In the sketch on the left, the combustion
head is set for an output of 3.50 GPH at
12 bar, while the shutter is level with set-
point 3.5, as required by the above
schedule.
5
GB
Low-flame High-flame
Set-point Set-point
2.2 2.5
2.5 2.9
2.7 3.1
3.1 3.7
3.5 4.8
4
4.6
3
6
8