Working; Combustion Adjustment; Recommended Nozzles - Riello BG5 Instrucciones De Instalación, Uso Y Mantenimiento

4.

WORKING

ATTENTION
!
QUALIFIED PERSONNEL WITH THE RIGHT INSTRUMENTS MUST HANDLE THE BURNER'S START-UP.
4.1

COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC 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 temperatures and the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper nozzle, adjust the pump pressure and the air damper
opening in accordance with the following schedule.
The high-flame values in the table refer to 12.5 % CO
chamber.
Nozzle
GPH Angle
1.10 80°
1.25 80°
1.35 80°
1.50 80°
4.2

RECOMMENDED NOZZLES:

Delavan 80° W with filter
60030.
TO FIT NOZZLE CARRY OUT THE FOLLOW-
ING ACTIONS (see fig. 13)
Remove nozzle-holder assembly (1) after
loosing screws (3) and nut (5), remove the
small cables (7) from the control box, the
socket (6) and the flame detector (4).
Withdraw the small cables (7) from the
electrodes, remove the diffuser disc-hold-
er assembly (8) from the nozzle-holder as-
sembly (1) after loosing screw (3, fig. 7,
page 5).
Screw the nozzle (9) correctly and tighten
it as shown in figure.
ATTENTION:
During the reassembly of the nozzle-
holder assembly screw the nut (5) as
shown in the fig. 14.
In order to guarantee the sealing of the
fan in its seat, make sure that there is at
least 1 mm of spring tension between
nozzle-holder assembly and casing.
Therefore the fixing split pin (2) will have
to be extended at least of 1 mm beyond
the flange of the nozzle-holder assembly.
TIGHTEN WITHOUT
MOVING BACKWARDS
TO THE END
Fig. 14
3402
Pump
pressure
bar
13
14
14
14.5
DROPSTOP type
:
5
D5684
at sea level and to "zero" pressure in the combustion
2
Burner
output
Low-flame
kg/h ± 4% Set-point
4.3
5.1
5.5
6.2
Fig. 13
8 GB
Air damper adjustment
High-flame
Set-point
0.3 3.1
0.6 3.9
0.7 4.7
0.9 6.0
D8216
2