20096985
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. 11)
clockwise or anti-clockwise until the notch on the regulating rod
2) lines up with the outside surface of the head assembly 1).
Fig. 11 shows the head regulating rod set on notch 3.5.
Example for the BS3/M burner
The diagram (Fig. 12) 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.
5.7.1
Removing the head assembly
To remove the head assembly, it is necessary to:
➤
make sure that the servomotor 7)(Fig. 11) is in a closed posi-
tion (CAM II = 0);
➤
disconnect the connections 3) and 5);
➤
unscrew the screws 4) and remove the servomotor 7).
➤
Loosen the screws 9)(Fig. 11);
➤
loosen the screws 8) and remove the head assembly sup-
port 1) slightly rotating to the right.
5.7.2
Reassembling the head assembly
Reverse the procedure above to put back the head assembly 1)
as it was before.
WARNING
The rotating shaft 10)(Fig. 11) operated by the
servomotor 7) is equipped with a safety mecha-
nism 11) that prevents it from accidentally rotating
during maintenance operations.
CAUTION
Take care not to change the setting position on
the elbow-bracket (2) when dismantling.
CAUTION
Tighten the screws 9), without fully locking 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.
Fig. 11
E9223
10
9
1
6
11
1
2
4
7
3
5
8
Fig. 12
kcal/h
kW
0
8
2
4
6
210
10
50
130
170
90
250
10
170,000
50,000
130,000
90,000
10,000
210,000
20096858
BS4/M
BS3/M
BS2/M
BS1/M
Summary of Contents for Gulliver BS1/M
Page 2: ...Translation of the original instructions...
Page 35: ......
