20191053
18
GB
Installation
4.8
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. 15, find the notch at which both air and cen-
tral gas/air should be adjusted.
4.8.1
Air adjustment
Proceed as follows:
rotate the screw 2)(Fig. 16) until the notch you have found
corresponds with the front surface 1) of the flange.
4.8.2
Gas adjustment
Proceed as follows:
loosen the screws 4) and rotate the ring nut 5)(Fig. 16) 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. 15) shows that the gas and air adjustments for
this output are carried out on notch 4.
Once you have finished setting up the head, refit the burner to the
slide bars 3)(Fig. 17) at approximately 100 mm from the sleeve
4)(Fig. 17) - burner positioned as shown in Fig. 12 - insert the
flame detection probe cable and the ignition electrode cable and
then slide the burner up to the sleeve so that it is positioned as
shown in Fig. 17.
Refit screws 2) on slide bars 3)(Fig. 17).
Secure the burner to the sleeve by tightening screw 1)(Fig. 17).
Reconnect the articulation 7) to the graduated sector 6)(Fig. 17).
WARNING
The diagrams show an optimum adjustment for
a type of boiler according to Fig. 3 on page 10.
CAUTION
To facilitate the adjustment, loosen the screw
3)(Fig. 16); adjust, then lock in place.
WARNING
The adjustments indicated can be modified during
the initial start-up.
If the pressure in the combustion chamber is 0
mbar, the adjustments are made with reference to
the dotted line.
Fig. 15
20047394
20047395
AIR ADJUSTMENT
GAS ADJUSTMENT
WARNING
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high voltage ca-
ble and the flame detection probe cable until they
are slightly stretched.
Carry out all the operations described above, then
reassemble the hood and all the burner safety and
protection devices.
WARNING
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high tension ca-
ble and flame detection probe cable until they are
slightly stretched.
3
5
4
1
2
Fig. 16
D8690
D3037
Fig. 17
