Combustion Adjustment; Recommended Nozzles - Riello RG2 Montage- Und Bedienungsanleitung

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
concentration in the flue 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 light oil and room temperature of 20 °C
Nozzle
GPH Angle
1.00 60°
1.10 60°
1.25 60°
1.50 60°
1.75 60°
2.00 60°
2.25 60°

4.2 RECOMMENDED NOZZLES:

NOTE: To achieve CLASS 2 (EN267:1999) emissions, the following nozzles have been used:
- hollow-cone model
4.3 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 loosing
the fixing nut to the flange.
Hook the burner to the flange (1), by removing
the blast tube (2) after loosing the fixing
screws (3).
Remove the small cables (4) from the electrodes
and the diffuser disc-holder assembly (5) from
the nozzle-holder assembly after loosing its fix-
ing screw (3, fig. 12, page 7).
Screw the nozzle (6) correctly and tighten
it as shown in the figure.
3133
Pump Burner
pressure output
bar kg/h ± 4%
12 4.0
12 4.4
12 5.0
12 6.0
12 7.0
12 8.0
12 9.0
Delavan type W - B ;
Monarch type R
Combustion head
adjustment
Set-point
0
1
2
3
4
5
6
Danfoss type S - B
; Steinen type S - Q.
2
5
4
S7480
6
GB
Air damper
adjustment
Set-point
1.3
2.2
2.5
3.0
4.0
4.5
6.0
A
Fig. 10
3
6
1
2