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COMBUSTION ADJUSTMENT
In conformity with EN267 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, fit the proper nozzle, then adjust the pump pressure 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
Nozzle
1
GPH
Angle
0.55
60°
0.60
60°
0.65
60°
0.75
60°
1
RECOMMENDED NOZZLES :
2
PUMP PRESSURE:
3
AIR DAMPER ADJUSTMENT :
The mobile air damper (1) operated by the jack (2) assures
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 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
negative pressure in the combustion-chamber, the need of
excess air, etc. All these conditions may require a different
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 at page 5;
– mount the cover, simply by means of the upper screw;
– check smoke number and CO
– 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.
2666
at sea level and with gas oil and room temperature of 20 °C.
2
Pump pressure
2
bar
11
12
12
13
Monarch type R - NS ; Delavan type W - E
Steinen
The pump leaves the factory set at this value.
12 bar -
;
2
Burner output
kg/h ± 4%
2.0
2.3
2.5
3.0
type H - Q ; Danfoss type H - S.
1
4
6
GB
Air damper adjustment
3
Set-point
2.6
3
3.6
8
D5788
2
2
3
4
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