Air Damper Adjustment - Riello Gulliver RG3 393T1 Manuel D'entretien

4.5 MAINTENANCE POSITION
To access the nozzle, do the following:
 Undo the wires (4) from the control box, the
flame detector (5) and undo the nut (3) from
the pump.
 Loosen the screws (2) and extract the nozzle
holder assembly (1) by turning to the right.
 Remove the small cables (4) from the elec-
trodes, loosen the screw (3, fig. 10, page 7)
and remove the diffuser disc-holder assembly
(7) from the nozzle-holder assembly (1).
 Screw up the nozzle (6) holding the nozzle
support with a spanner.
 Refit following the operations in the reverse
order to the one described above.
ATTENTION
During the reassembly of the nozzle-holder as-
sembly screw the nut (3) as shown in the figure
below.
Fig. 12
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
4.6 COMBUSTION HEAD ADJUSTE-
MENT,
(see fig. 13)
The adjustment of the combustion head varies
depending on the burner output.
Do the following to adjust it:
 Rotate the setting screw (8) clockwise or counter-
clockwise until the set-point marked on the regu-
lating rod (9) is level with the outside plane of the
nozzle-holder assembly (1).
 In the example the regulating rod (9) is set at
notch 3; this means that the burner is regulated
for an output of 9 Kg/h with pump pressure at
12 bar and with the use of a nozzle of 2.25 GPH,
as indicated in the reference table.
4.7

AIR DAMPER ADJUSTMENT,

(see fig. 13)
To regulate the air damper, do the following:
 Loosen the nut (10) and set the air damper by
turning the screw (11).
 When burner shuts down the air damper automat-
ically close still a max. chimney depressure of 0.5 mbar.

When the adjustment is completed do the nut (10) up again.
3280
3
D5684
4 2
5
6
3
Fig. 13
8
GB
Fig. 11
1
7
8
9
E9317
11
10
1