Burner Start-Up Cycle - Riello 40 G20S Instrucciones De Instalación, Montaje Y Funcionamiento

3
AIR DAMPER ADJUSTMENT
The settings indicated in the schedule refer to the burner with its metal cover fitted and the combustion
chamber with "zero" depression. These regulations are purely indicative.
Each installation however, has its own unpredictable working conditions: actual nozzle output; positive
or negative pressure in the combustion-chamber, the need of excess air, etc. All these conditions may
require a different air-damper setting.
It is important to take account of the fact that the air output
of the fan differs according to whether the burner has its
metal cover fitted or not.
Therefore we recommended to proceed as follows:
– adjust the air damper as indicated in the schedule (3, page 6);
– mount the cover, simply by means of the upper screw;
– check smoke number;
– should it become necessary to modify the air output,
remove the cover by loosening the screw, adjust the air
damper, remount the cover and finally recheck the smoke
number.
Note: When the burner works at a firing rate higher than
18 kg/h remove the panel fitted inside the metal
cover. (See figure).
ELECTRODES ADJUSTMENTS
Attention:
Before assembling or removing the noz-
zle, loosen the screw (A) and move the
electrodes ahead.

BURNER START-UP CYCLE

Thermostat
Motor
Ignition transformer
Valve
Ignition flame
High flame
Lock-out lamp
2406
:
Normal
~ ~
12s
4 ±
0.3 mm
D6313
Lock-out, due to light-failure
6s
8
GB
MOVE THE
TRODE HOLDER BACK-
WARDS TO THE END
A
6.5 ±
0.5 mm
~ ~
12s 5s
PANEL
S7335
ELEC-
D5796