![background image](http://html1.mh-extra.com/html/riello/3761171/3761171_installation-use-and-maintenance-instructions_1460040020.webp)
20140262
18
GB
Installation
5.7
Combustion head adjustment
The combustion head leaves the factory set for the minimum
output.
The adjustment of the combustion head varies depending on the
burner output.
This is carried out by turning the adjustment screw 6)(Fig. 13)
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. 13 the head regulating rod is set to notch 3.
Example for BS3F burner
The diagram (Fig. 14) 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 (Fig. 13) it is necessary to:
disconnect the connections 3) and 5) and loosen screws
10);
loosen and remove the screws 7), remove the head holder
assembly 1) by slightly rotating it to the right.
5.7.2
Reassembling the head assembly
Reassemble with the reverse procedure to that described above,
repositioning the head assembly 1)(Fig. 13) as it was originally.
CAUTION
Take care not to change the setting position on
the elbow-bracket 2)(Fig. 13) when dismantling.
CAUTION
Screw in the screws 7)(Fig. 13) all the way without
locking them.
Lock them with a tightening torque of 3 - 4 Nm.
ATTENTION
Check that when operating there are no gas leaks
from the screw housings.
Fig. 13
S7795
Fig. 14
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
BS1F
BS2F
BS
3F
BS
4F
Содержание 3761171
Страница 2: ...Translation of the original instructions Traducci n de las instrucciones originales...
Страница 87: ......