Working; Combustion Adjustment; Combustion Head Setting - Riello BS2D TL Instructions Pour Installation, Utilisation Et Entretien

4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC
the application of the burner on the boiler, adjust-
ment and testing must be carried out observing
the instruction manual of the boiler, including
verification of the CO and CO
the flue gases, their temperatures and the av-
erage temperature of the water in the boiler. 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. 9)
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 9 shows the head regulating rod set on
set point 3.
Example for BS3D burners:
The burner is installed in a 100 kW boiler.
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 suggest
adjusting the combustion head according to
the boiler.
REMOVING THE HEAD ASSEMBLY
Proceed as follows to remove the head assembly:
➤ Disconnect the connections (3 and 5).
Extract the small tube (4) 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.
WARNING
➤ Tighten the screws (7) completely (without
locking them); then lock them with a torque wrench setting of 3-4 Nm.
Check there are no gas leaks from the screws during these operations.
➤
➤ If the pressure test point (13) should work loose, it must be correctly fixed ensuring that the hole (F) in-
side the head assembly (1) is facing downwards.
3115
concentration in
2
kcal/h
210.000
170.000
130.000
90.000
50.000
10.000
S7006
kW
270
250
230
210
190
170
150
130
110
90
70
50
30
10
0 2
9 GB
916T1
4 6 8 10
Set point
Fig. 9
D8958
12