Riello BS2F-GPL Installation, Use And Maintenance Instructions page 51

4. WORKING
4.1 COMBUSTION ADJUSTMENT
The application of the burner to the heat generator, adjustment and testing must be carried out observing
the instruction manual of the boiler, including verification of the CO and CO
their temperatures and the average temperature of the water in the generator.
To suit the required appliance output, choose the proper setting of the combustion head, and the air damper
opening.
4.2 COMBUSTION HEAD SETTING,
(see fig. 8)
The combustion head is set in the factory
(see Tab.)
Setting depends on the output of the burner.
Rotate the setting screw (6) in a clockwise or
anticlockwise direction until set point marked
on the regulating rod (2) is level with the out-
side plane of the head assembly (1).
Figure 8 shows the head regulating rod set
on set point 3.
Example for burner type 913 T2:
The burner is installed in a 100 kW heat gen-
erator. Taking an efficiency level of 90% the
burner should give an output of app. 110 kW
with the regulating rod set at set point 3 as
shown in the diagram.
The diagram is for indication purposes: to as-
sure good working from the burner we sug-
g e s t a d j u s t i n g t h e c o m b u s t i o n h e a d
according to the heat generator.
CODE HEAD SETTING
20098812 1
20098813
20098814
20098815
20098817 2
20098818
REMOVING THE HEAD ASSEMBLY
Proceed as follows to remove the head as-
sembly:
Disconnect the connections (3 and 5) and

loosen the screws (10).
Unscrew and remove the screws (7), pull

out the head assembly support (1) turning
it slightly to the right.
Take care not to change the setting posi-
tion on the elbow-bracket (2) during dis-
mantling.
REASSEMBLING THE HEAD ASSEMBLY
Follow the above instructions in reverse, re-
turning the head assembly (1) to its original
position.
20098824
MODEL TYPE
BS2F 912T2
BS2F-GPL 912T2
BS3F 913T2
kcal/h
BS3F-GPL 913T2
BS4F 914T2
BS4F-GPL 914T2
210.000
170.000
130.000
90.000
50.000
10.000
2
Fig. 8
S7795
kW
270
250
230
210
190
170
150
130
110
90
70
50
30
10
0
2 4
11 GB
concentration in the flue gases,
912T2
6 8 10
Set point
20106925
12