Securing The Burner To The Boiler; Combustion Head Calibration - Riello C9337401 Installation, Use And Maintenance Instructions

4.4

Securing the burner to the boiler

Detach the combustion head from the burner, (Fig. 12):
 disconnect the oil pipes by unscrewing the two connectors 6);
 loosen the 4 screws 3) and remove the cover 1);
 disengage the swivel coupling 14) from the graduated sector;
 remove the screws 2) from the slide bars 5);
 remove the 2 screws 4) and pull the burner back on slide bars
D10492
4.5

Combustion head calibration

At this point check, whether the maximum delivery of the burner in
2nd stage operation is contained in area A or in area B of the firing
rate. See (Fig. 4, page 9).
If it is in area B then no operation is required.
If, on the other hand, it is in area A, pre-set the combustion head
as below indicated:
 remove the screw 1)(Fig. 13) and extract the internal part 2);
Installation
2 15
3
1
D10525
17
GB
5) by about 4";
 install the extension bars 31) Fig. 1, page 7 and re-screw the
screws 2) including the safety plate 15);
 disconnect the electrode wires and then pull the burner com-
pletely off the slide bars.
5 4
9
4 "
8
6
14
7
 replace the 4 circular sectors 3) by unsCrewing the relevant
screws, with the circular sectors supplied with the burner.
Do not remove the circular sector 4.
WARNING
12
11
10
L
13
Fig. 12
Fig. 13
20026897