20135737
18
GB
Installation
5.7
Combustion head adjustment
The adjustment of the combustion head varies depending on the
burner output.
This is carried out by turning the adjustment screw 6)(Fig. 12)
clockwise or anti-clockwise until the notch on the regulating rod
2) lines up with the outside surface of the head assembly 1).
In Fig. 12 the head regulating rod is set to notch 3.
Example for the BS3D burner
The diagram (Fig. 13) is indicative and shows the calibration of
the combustion head in relation to the burnt output.
To ensure the burner works efficiently, we suggest adjusting the
combustion head according to the requirements of the specific
boiler.
The burner is installed in a 100 kW boiler. Considering an effi-
ciency of 90%, the burner must supply around 110 kW; for this
burner output the adjustment should be on notch 3.
5.7.1
Removing the head assembly
To remove the head assembly, it is necessary to:
disconnect the connections 3) and 5)(Fig. 12);
remove the tube 4) and loosen the screws 10)(Fig. 12);
unscrew and remove the screws 7), remove the head holder
assembly 1)(Fig. 12) slight rotation to the right.
5.7.2
Reassembling the head assembly
Reverse the procedure above to put back the head assembly
1)(Fig. 12) as it was before.
CAUTION
Take care not to change the setting position on
the elbow-bracket 2)(Fig. 12) when dismantling.
CAUTION
Tighten the screws 7)(Fig. 12), without fully lock-
ing them. Lock them with a tightening torque of 3
- 4 Nm.
WARNING
Check that when operating there are no gas leaks
from the screw housings.
If the pressure test point 13)(Fig. 12) should be-
come slack accidentally, we recommend fixing it
correctly ensuring that the hole (F) in the head as-
sembly 1)(Fig. 12) is facing downwards.
Fig. 12
S7006
Fig. 13
Set point
D8934
170,000
50,000
210,000
130,000
90,000
10,000
kcal/h kW
0
8
2
4
6
210
10
50
70
110
130
150
170
190
30
90
230
250
10
270
12
915T1
916T1
91
7T1
918
T1
