2458
7
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.
4.2
NOZZLES RECOMMENDED :
Delavan type W; Steinen type Q - S; Danfoss type H - S.
Angle : 60° - In most cases.
80° - In case of flame detachment, during ignitions at low
temperatures.
4.3
ELECTRODES SETTING
4.4
PUMP PRESSURE
The pump leaves the factory set for kerosene working.
10 bar: maximum pressure for kerosene.
FOR LIGHT OIL INCREASE PRESSURE
12 bar: pressure suitable for light oil in most cases.
14 bar: improves flame retention; it is therefore suitable for ignitions at low temperatures.
4.5
AIR DAMPER ADJUSTMENT
The air damper is set in factory. This regulation is purely indicative. Each installation however, has its
own unpredictable working conditions: actual nozzle output; positive or negative pressure in the combus-
tion-chamber, the need of excess air, etc. All these conditions may require a different air damper setting.
Before removing or assembling the
nozzle, loosen the screw (A, fig. 9)
and move the electrodes ahead.
TYPE
483 T50
3 – 3.5 mm
485 T50
2 – 2.5 mm
501 T2K
2 – 2.5 mm
487 T50
3 – 3.5 mm
ATTENTION
B
4 ±
0.3 mm
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
D5230
A
B
Fig. 9
