Combustion Head Adjustment - Riello 40 Installation, Use And Maintenance Instructions

COMBUSTION HEAD ADJUSTMENT

Loosen the screw (A), move the elbow (B) so that
the rear plate of the coupling (C) coincides with
the set point.
Tighten the screw (A).
Example:
The burner is installed in a 63 kW boiler.
Considering efficiency of 90%, the burner must
supply around 70 kW.
The diagram shows that for this
output the adjustment must be
made on notch 1.5.
The diagram is to be used only
for initial settings.
To improve air pressure switch
operation it may be necessary to
reduce the combustion
opening (notch toward position
0).
PROBE - ELECTRODE POSITIONING
IMPORTANT
Do not turn the ignition electrode but leave it as shown in the figure; if the starting electrode is put near
the ionisation probe, the amplifier of the control box might be damaged.
~
40 mm
Probe
D5070
3389
kcal/h kW
100
80.000
90
70.000
80
head
70
60.000
60
50.000
50
40.000
40
Probe
2.2
Diffuser
6
C
A
B
0 0,5 1 1,5
Ignition electrode
WARNING 2.5
GB
S7015
S5071
2 2,5
N° notch
Electrode

3.5 mm
3