2867
6
GB
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
2
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% CO2 at sea level and with light oil and room temperature of 20 °C.
4.2
RECOMMENDED NOZZLES:
Delavan type W - B ;
Danfoss type S - B
Monarch type R
;
Steinen type S - Q.
MAINTENANCE POSITION
THE ACCESSIBILITY TO THE NOZZLE, THE DIF-
FUSER DISC AND THE ELECTRODES IS MADE
EASY IN 2 WAYS:
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.
Nozzle
Pump
pressure
Burner
output
Combustion head
adjustment
Air damper
adjustment
GPH
Angle
bar
kg/h ± 4%
Set-point
Set-point
0.60
60°
12
2.3
1
1.2
0.65
60°
12
2.5
1.5
1.8
0.75
60°
12
2.9
2.5
2.9
0.85
60°
12
3.3
3
3.7
1.00
60°
12
3.8
3.5
5.1
1.10
60°/45°
12
4.2
4
5.6
1.25
60°/45°
13
5.0
4
6.7
A
Fig. 10
2
5
4
3
6
1
S7477
A
Summary of Contents for 3736420
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