15
20146119
GB
Installation
5.6
Securing the burner to the boiler
Separate the combustion head assembly from the burner
body by removing nut 1) and removing the group A)(Fig. 9).
Fix the group B)(Fig. 9) to the boiler plate 2), inserting the
supplied insulating gasket 3).
5.7
Combustion head adjustment
To adjust, proceed as follows:
loosen the two screws A)(Fig. 10), move the elbow B) so
that the rear plate of the coupling C) coincides with the
desired notch;
screw in the two screws A).
To disassemble the diffuser disc holding head, proceed as fol-
lows:
loosen the two screws A)(Fig. 10) without removing them;
pull back the head, rotating it by about 180°,
extract the head, tilting it downwards.
Example:
The burner is installed in a 21 kW boiler.
Considering an efficiency of 90%, the burner must supply around
23kW.
The diagram (Fig. 11) shows that for this output the adjustment
must be made on notch 1.
The diagram is to be used only for initial settings,. To ensure
good air pressure switch operation it may be necessary to reduce
this combustion head opening (notch toward pos. 0).
Provide an adequate lifting system of the burner.
WARNING
The seal between burner and boiler must be
airtight.
D5062
Fig. 9
A
B
1
3
2
C
A
B
A
S7020
Fig. 10
Fig. 11
0
0.5
1
1.5
2
40
30
25
20
15
10
35
30,000
25,000
20,000
15,000
10,000
kcal/h
kW
D5051
23
Notch No.
