Riello BS2F-GPL Installation, Use And Maintenance Instructions page 54

Forced draught gas burners
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4.11 COMBUSTION HEAD IDENTIFICATION
It is possible to identify the type of combustion head installed, by checking the presence or absence of the letter marked on the gas
distributor.
20083158
Gas type
5.
MAINTENANCE
Disconnect the electric supply to the burner by switching off the main power switch and close the
gas shut-off valve before maintaining or checking the system.
The burner requires scheduled maintenance that must be carried out by qualified personnel and in compli-
ance with local legislation.
Scheduled maintenance is vital for the smooth operation of the burner; it avoids waste of fuel and reduces
harmful emissions into the atmosphere.
THE FUNDAMENTAL OPERATIONS TO CARRY OUT ARE AS
FOLLOWS:
Check at regular intervals that the holes of the gas head are
not obstructed. If they are, clean them with a suitable tool as
shown in the figure 11.
Check there are no occlusions or obstructions in the inlet or
return pipes, in the air suction areas and in the combustion
product waste pipe.
Check that the burner and gas train electrical connections are
correct.
Check that the positioning of the air pressure test point (8, fig.
1, page 2) is correct.
Check that the gas train is suited to the burner capacity, the type
of gas used and the network gas pressure.
Check that the positioning of the combustion head is correct
and that it is properly fixed to the boiler.
Check that the air damper is positioned correctly.
Check that the ionisation probe and the electrode are positioned correctly (see fig. 9, page 12).
Check that the air pressure switch and the gas pressure switch are set correctly.
Let the burner run at full capacity for about ten minutes, setting all the elements correctly as explained in
this manual.
Then carry out the analysis of the combustion by checking:
CO
percentage (%);
2
Flue gases temperature at the stack.
20098824
Fig. 10
G20
G30 - G31
P
CO content (ppm);
NOx content (ppm);
14 GB
Fig. 11
E9252
Ionisation current (µA);

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