2344
5
GB
COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjust-
ment and testing must be carried out observing the instruction manual of the boiler, including verifica-
tion 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, fit the nozzle then adjust the pump pressure and the air damper
opening in accordance with the following schedule.
NOZZLES RECOMMENDED :
Monarch type R - NS;
Delavan type W - A - E
Steinen type H - Q ;
Danfoss type H - B
PRESSURE:
12 bar :
the pump leaves the factory set at this value
14 bar : improves flame retention; it is therefore suitable for ignitions at
low temperatures.
AIR DAMPER ADJUSTMENT
:
The mobile air damper (1) operated by the jack (2) as-
sures the complete opening of the air intake.
The regulation of the air-rate is made by adjusting the
fixed air damper (3), after loosing the screws (4). When
the optimal regulation is reached, screw tight the
screws (4) to assure a free movement of the mobile air
damper (1).
The air damper leaves the factory set at position 3.8.
The settings indicated in the schedule refer to the burner
with its metal cover fitted and the combustion chamber
with “zero” depression.
These regulations are purely indicative.
Each installation however, has its own unpredictable
working conditions: actual nozzle output; positive or neg-
ative pressure in the combustion-chamber, the need of
excess air, etc. All these conditions may require a differ-
ent air-damper setting.
It is important to take account of the fact that the air output of the fan differs according to
whether the burner has its metal cover fitted or not.
Therefore we recommended to proceed as follows:
– adjust the air damper as indicated in the schedule (3);
– mount the cover, simply by means of the upper screw;
– check smoke number;
– should it become necessary to modify the air output, remove the cover by loosening the screw,
adjust the air damper, remount the cover and finally recheck the smoke number.
Nozzle
Pump pressure
Burner output
Air damper adjustment
GPH
Angle
bar
kg/h
±
4%
Set-point
0.40
60
°
12
1.72
2.1
0.50
60
°
12
2.15
2.3
0.60
60
°
12
2.58
3.2
0.65
60
°
12
2.79
3.8
0.65
60
°
13
2.91
5
1
2
3
1
2
3
4
3
D5778
4
1
2
