Riello Burners Gulliver BS3F, Installation, Use And Maintenance Instructions, Page: 49 / 56

3150
11
GB
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
2
concentration in the flue gases,
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 leaves the factory
set for the minimum output.
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 T1:
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.
REMOVING THE HEAD ASSEMBLY
Proceed as follows to remove the head as-
sembly:
³
Disconnect the connections (3 and 5) and
loosen the screws (10).
³
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.
WARNING
³
Tighten the screws (7) completely (without
locking them) ; then lock them with a
torque wrench setting of 3 - 4 Nm.
³
Check there are no gas leaks from the
screws during these operations.
S7795
Fig. 8
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
911T1
912T1
91
3T
1
91
4T
1