Combustion Adjustment; Recommended Nozzles; Maintenance Position - Riello RG2D 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 te-
sting 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.
Pump pressure
Nozzle
Angle 1 st stage
GPH
1.00 60° 9
1.10 60° 9
1.25 60° 9
1.50 60° 9
1.75 60° 9
2.00 60° 9
2.25 60° 9

4.2 RECOMMENDED NOZZLES:

MAINTENANCE POSITION

THE ACCESSIBILITY TO THE NOZZLE, THE
DIFFUSER DISC AND THE ELECTRODES IS
MADE EASY IN 2 WAYS:
A
Fig. 11
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. 13, page 7).
Screw the nozzle (6) correctly and tighten it
➤
as shown in the figure.
In the long head version the socket wrench (7)
➤
should lock the extension part that carries the
nozzle.
1914
Burner output
bar kg/h ± 4%
2 nd stage 1 st stage
14 3.5
14 3.8
14 4.3
14 5.2
14 6.1
14 7.0
14 7.8
Monarch type R ; Delavan type W - E ;
Steinen type Q ; Danfoss type S
Comb. head
adjustment
2 nd stage
Set-point
4.3 0
4.8 1
5.4 2
6.5 3
7.6 4
8.7 5
9.8 6
2
5
4
7
6 GB
Air damper adjustment
1 st stage 2 nd stage
Set-point Set-point
0.2 1.5
0.4 2.1
0.6 2.6
0.8 3.4
1.2 4.8
1.4 5.4
1.6 6.0
; Satronic type S.
A
Fig. 11
3
6
1
S7480
2