Working; Combustion Adjustment; Recommended Nozzles - Riello RG0.3 Manuel D'entretien

4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with EN267 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
gases, their temperatures and the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper nozzle and adjust the pump pressure, the setting of
the combustion head, and the air damper opening in accordance with the following schedule.
The values shown in the table are measured on a CEN boiler (as per EN 267).
They refer to 12.5% CO 2 at sea level and with gas oil and room temperature of 20 °C
Nozzle
GPH Angle
0.50 80°
0.50 60°/80°
0.60 60°
0.65 60°
0.75 60°

4.2 RECOMMENDED NOZZLES:

For ignitions at low temperature (lower than + 8 °C) act as follows:
Use nozzles with empty or half-empty cone of
the following type:
Delavan type W ;
Monarch type NS ;
or (as alternative) increase the pump pressure
up to 14 bar.
If necessary, adopt both solutions.
MAINTENANCE POSITION
THE ACCESSIBILITY TO THE NOZZLE, THE
DIFFUSER DISC AND THE ELECTRODES IS
MADE EASY IN 2 WAYS:
A
Fig. 10
Remove the burner out of the boiler, after loos-
ing the fixing nut to the flange.
Hook the burner to the flange (1), by remov-
ing the blast tube (2) after loosing the fixing
screws (3).
Remove the small cables (4) from the elec-
trodes and the diffuser disc-holder assembly (5)
from the nozzle-holder assembly after loosing
its fixing screw (3, fig. 12, page 7).
Screw the nozzle (6) correctly and tighten it
as shown in the figure.
2301
Pump
pressure
bar
9.5
12
12
12
13.5
Delavan type W - B ; Danfoss type S - B - H
Monarch type R - NS ; Steinen type S - Q - H
Danfoss type H;
Steinen type H,
Burner Combustion head
output adjustment
kg/h ± 4% Set-point
1.8
2.0
2.4
2.6
3.2
2
5
4
6
GB
concentration in the flue
2
.
Air damper
adjustment
Set-point
1
1.5
1.7
2
2
A
3
6
0.8
1.2
2.9
4.5
6.7
Fig. 10
1
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