Riello Burners 377 T1 Installation, Use And Maintenance Instructions page 36

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:
MAINTENANCE POSITION
THE ACCESSIBILITY TO THE NOZZLE, THE DIF-
FUSER 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 fixing screw
(3, fig. 12, page 7).
– Screw the nozzle (6) correctly and tighten it as
shown in the figure.
B
Fig. 11, page 7 –
bly (1) after loosing screws (2) and nut (3), remove the
small cables (4) from the control box and the photoresist-
ance (6).
– Withdraw the small cables (4) from the electrodes,
remove the diffuser disc-holder assembly (10) from
the nozzle-holder assembly (1) after loosing screw
(3, fig. 12, page 7).
– Screw the nozzle (11) correctly and tighten it as
shown in figure.
2329
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
14 9.8
Delavan type W - B ; Danfoss type S - B
Monarch type R
For 1.75 - 2.00 - 2.25 GPH nozzles it is advisable to use
full cones.
Remove nozzle-holder assem-
Combustion head
adjustment
Set-point
0
1
2
3
4
5
6
; Steinen type S - Q.
2
5
4
6
GB
2
Air damper
adjustment
Set-point
0.9
3.1
3.4
3.8
4.5
4.9
6.0
A
Fig. 10
3
6
1
S7480