Working; Combustion Adjustment; Recommended Nozzles - Riello BG7D Manuel D'entretien

4.

WORKING

WARNING
!
QUALIFIED PERSONNEL WITH THE RIGHT INSTRUMENTS MUST HANDLE THE BURNER'S START-UP.

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 table.
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
1 st stage 2 nd stage
GPH Angle
1.75 60°
2.00 60°
2.25 60°
2.50 60°
2.75 60°
3.00 60°
1.25 60°
1.35 60°
1.50 60°
1.75 60°
2.00 60°
4.2

RECOMMENDED NOZZLES

Steinen type H; Danfoss type H;
3066
Pump pressure
bar
1 st stage
9 14
9 14
9 14
9 14
9 14
9 14
9 14
9 14
9 14
9 14
9 14
Delavan type W.
Combustion
Burner output
kg/h ± 4%
2 nd stage
6.1 7.6
7.0 8.7
7.8 9.8
8.7 10.8
9.6 11.9
10.4 13.0
4.3 5.4
4.7 5.9
5.2 6.5
6.1 7.6
7.0 8.7
9
GB
Air damper
adjustment
head
adjustment 1 st stage
Set-point Set-point
2.0 0.2
2.5 0.25
4.0 0.25
5.0 0.4
6.0 0.6
7.0 0.7
1.0 0.6
1.5 0.8
2.5 1.0
3.5 1.0
5.5 1.3
2
2 nd stage
Set-point
2.0
2.2
2.2
2.4
3.5
4.5
2.8
2.7
3.5
3.5
4.5