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5.7
Positioning the probe - electrode
When positioning the probe and electrode, re-
spect the dimensions shown in Fig. 13.
WARNING
D613
5.8
Combustion head adjustment
At this point of the installation, the combustion head is fixed to the
boiler as shown in Fig. 12.
It is therefore especially easy to adjust, and this adjustment de-
pends only on the maximum output of the burner.
You can adjust the air and gas to calibrate the combustion head.
In the diagram of Fig. 14, find the notch at which both air and cen-
tral gas/air should be adjusted.
The diagrams show an optimum adjustment for
a type of boiler according to (Fig. 4, page 10).
WARNING
5.8.1
Air adjustment
Proceed as follows:
rotate the screw 2)(Fig. 15) until the notch you have found
corresponds with the front surface 1) of the flange.
To facilitate the adjustment, loosen the screw
3)(Fig. 15); adjust, then lock in place.
CAUTION
5.8.2
Gas adjustment
Proceed as follows:
loosen the screws 4) and rotate the ring nut 5)(Fig. 15) until
the notch you have found corresponds with the indicator 3);
block the screws 4).
Example:
burner output = 1300 kW and combustion chamber pressure
equal to 0 mbar.
The diagram (Fig. 14) shows that the gas and air adjustments for
this output are carried out on notch 4.
The adjustments indicated can be modified during
the initial start-up.
If the pressure in the combustion chamber is 0
WARNING
mbar, the adjustments are made with reference to
the dotted line.
Installation
WARNING
Probe
AIR ADJUSTMENT
GAS ADJUSTMENT
17
GB
Do not rotate the probe: leave it as in Fig. 13 since
if it is located too close to the ignition electrode,
the control box amplifier may be damaged.
Electrode
1
2
3
5
4
Fig. 13
20047394
20047395
Fig. 14
D8690
Fig. 15
20054100
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