Air Damper Adjustment; Burner Start-Up Cycle - Riello F20 Installation, Use And Maintenance Instructions

4

AIR DAMPER ADJUSTMENT

The values stated in the table are necessary for the first setting of air-damper.
They are relevant to a burner with mounted cowling and combustion chamber with depression zero.
These values should be adjusted, on the basis of the specific requirements of the system, so that
the Bacharach number is not near 1.
ELECTRODES ADJUSTMENTS
Attention:
Before assembling or removing the noz-
zle, loosen the screw (A) and move the
electrodes ahead.

BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
WARNINGS TO AVOID BURNOUT OR BAD COMBUSTION OF THE BURNER
– When the burner is stopped, the smoke pipe must be opened and effect a natural draught in
the combustion chamber. If the smoke pipe is closed, the burner must be drawn back till the
extraction of blast tube from the furnace. Before operating in this way take the voltage off.
– The place, where the burner works, must have same openings suitable for the passage of air
necessary for combustion. To be sure about this, you have to control the smoke number of ex-
haust gas with all the windows and doors closed.
– If in the place, where the burner works, there are air-breathings, check the existence of air-in-
put openings with dimensions suitable for the necessary air-exchange. In any case check that,
when the burner is stopped, the air-breathings do not draw warm smokes from pipes through
the burner.
2401
~
12s
4 ±
0.3 mm
D6313
A
Lock-out, due to light-failure
~
12s
7
GB
MOVE THE ELEC-
TRODE HOLDER BACK-
WARDS TO THE END
6.5 ±
0.5 mm
~
5s
D5229