Riello 40 G20D Instrucciones De Instalación, Uso Y Mantenimiento página 24
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4. WORKING
4.1 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
tion in the flue gases, their temperatures and the average 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
GPH
Angle
2.00
60°
2.25
60°
2.50
60°
2.75
60°
3.00
60°
3.50
60°
4.00
60°
4.50
60°
5.00
60°
5.50
60°
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°
*
With Kerosene, the pressure value in the 1st stage must be no greater than 7 bar.
4.2 NOZZLES RECOMMENDED
Monarch type R - PLP
Delavan type B - W
Steinen type S - SS
Danfoss type S
COMBUSTION HEAD SETTING: This is done when fitting the nozzle, with the blast tube removed. It depends on
Terminal plane of the blast tube
D5284
3397
Pump
Burner
pressure
output
bar
kg/h ± 4%
st
nd
st
1
2
1
*
7
11
5.90
*
7
11
6.37
*
7
11
6.90
*
7
11
7.50
*
7
11
8.56
*
7
11
9.35
*
7
11
10.50
*
7
11
12.24
*
7
11
14.35
*
7
10
15.27
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
Light oil
Kerosene
–
–
the output of the burner and is carried out by rotating the regulating rod, till the ter-
minal plane of the blast tube is level with the set-point, as indicated in the sched-
ule.
2
Regulating rod
5
3
1
Shutter
Blast tube
Combustion head
adjustment
nd
2
Set-point
7.27
0 (min)
8.02
1
8.62
1.5
9.56
2
10.64
2.5
12.0
3
13.15
3.5
15.32
4
17.95
5
18.30
6 (max)
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
Angle
60° : in most cases. Particularly suited to avoid flame-
detachment during ignition.
: Not foreseen
–
: Applicable
In the sketch on the left, the combustion head is set for an
output of 3.5 GPH at 7/11 bar, while the shutter is level
with set-point 3, as required by the above schedule.
9
GB
concentra-
2
Air damper adjustment
st
nd
1
stage
2
stage
Set-point
Set-point
1.9
2.3
2
2.5
2.1
2.6
2.3
2.9
2.4
3.1
2.5
3.3
2.7
3.8
2.9
4
4.1
8 (max)
4.5
8 (max)
2.3
2.6
2.5
3.0
2.7
3.5
2.9
3.8
3.2
4.3
3.5
5.0
4.5
6.5
5
8.0
