Working; Combustion Adjustment; Combustion Head Setting - Riello 40 FS8C Instrucciones De Instalación, Uso Y Mantenimiento

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3.4.2 ELECTRICAL WIRING WITH GAS LEAK CONTROL DEVICE (DUNGS VPS 504)
4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with EN676 the application of the burner on the
boiler, adjustment and testing must be carried out observing
the instruction manual of the boiler, including verification of the
CO and CO
concentration in the flue gases, their tempera-
2
tures and the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper set-
ting of the combustion head, and the air damper opening.

4.2 COMBUSTION HEAD SETTING

Loose 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 on a 63 kW boiler
with an efficiency of 90%, the burner
input is about 70 kW using the diagram,
the combustion set point is 1.5.
The diagram is to be used only for initial
settings, to improve air pressure switch
operation or improve combustion, it may
be necessary to reduce this setting (set
point toward position 0).
2741
~
230V
50Hz
D4199
kcal/h
kW
100
80,000
90
70,000
80
60,000
70
60
50,000
50
40,000
40
0
6
GB
KEY TO LAY-OUT
X6 – 6 pin plug
X7 – 7 pin plug
B4 – Working signal
h1 – Hour counter
PG – Minimum gas pressure
S3 – Remote lock-out signal 
T6A – Fuse
TL – Limit thermostat
TS – Safety thermostat
V10 – Safety valve
V11 – Adjustment valve
D5071
0.5
1
1.5
TO BE DONE BY
THE INSTALLER
switch
(230V - 0.5 A max.)
S7014
2
2.5
3
Set point

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593 m3759303

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