Combustion Adjustment; Nozzles Recommended; Combustion Head Setting - Riello G20I Instrucciones De Instalación, Montaje Y Funcionamiento

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
1
GPH Angle 1
1.75 60°
2.00 60°
2.25 60°
2.50 60°
3.00 60°
3.50 60°
4.00 60° / 45°
4.50 60° / 45°
1

NOZZLES RECOMMENDED:

Angle
2

COMBUSTION HEAD SETTING

Terminal plane of the blast tube
D5284
Blast tube
2356
concentration in the flue gases, their temperatures and the average
2
Pump Burner
pressure output
bar kg/h ± 4%
st nd st
2 1
9 14 6.1
9 14 7.0
9 14 7.8
9 14 8.7
9 14 10.4
9 14 12.2
9 14 13.9
9 14 15.6
Monarch type R - PLP ; Delavan type B - W
Steinen
in most cases. Particularly suited to avoid flame-detach-
: 60° :
ment during ignition.
45° : for narrow and long combustion-chambers.
: This is done when fitting the nozzle, with the blast tube
2
5 3 1
Regulating rod
Shutter
Comb. head
adjustment
2
nd
2 Set-point
7.6 1
8.7 1.5
9.8 2
10.8 2.5
13.0 3.5
15.2 4
17.3 5
19.5 6
type S - SS ; Danfoss type S
removed. It depends on the output of the burner and is car-
ried out by rotating the regulating rod, till the terminal plane
of the blast tube is level with the set-point, as indicated in
the schedule.
In the sketch on the left, the combustion
head is set for an output of 3.00 GPH at
8/14 bar, while the shutter is level with
set-point 3.5, as required by the above
schedule.
7
GB
Air damper adjustment
st nd
1 stage 2
Set-point Set-point
2.3
2.5
2.7
2.9
3.2
3.5
4.5
5.0
3
stage
2.6
3.0
3.5
3.8
4.3
5.0
6.5
8.0