Electrodes Adjustment; Pump Pressure; Combustion Head Setting; Air Damper Adjustment - Riello Burners Gulliver RG3 393 T1 Manuel D'entretien

bly screw the nut (3) as shown in the figure below.
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
4.3 ELECTRODES ADJUSTMENTS
ATTENTION:
Lean the diffuser disc-holder assembly (1) on the nozzle-holder (2) and lock it by screw (3).
For prospective adjustments loosen screw (4) and move the electrodes assembly (5).
To have access to the electrodes
carry out operation as described in
chapter "4.2 RECOMMENDED
NOZZLES" (page 6).

4.4 PUMP PRESSURE

The pump leaves the factory set at 12 bar.
To change it act on pump pressure adjust screw (4, fig. 6, page 4).

4.5 COMBUSTION HEAD SETTING

It depends on the output of the burner and is carried out by rotating clockwise or counterclockwise the setting
screw (5) until the set-point marked on the regulating rod (9) is level with the outside plane of the nozzle-holder
assembly (1).
In the sketch the combustion head is set for an output of 2.25 GPH at 12 bar.
The set-point 3 of the regulating rod (9) is at the same level with the outside plane of the nozzle-holder assem-
bly (1) as shown in the schedule.

4.6 AIR DAMPER ADJUSTMENT

To vary the setting adjust the screw (7) after loosing the nut (8).
When burner shuts down the air damper automatically closes till a max. chimney depressure of 0.5 mbar.
2331
D5684
3
(see fig. 12)
Fig. 12
(see fig. 11, page 6)
(see fig. 11, page 6)
WARNING
MEASURES MUST BE
RESPECTED
0
4.5
– 0.5 mm
4
5
3
7
GB
–
6 7
mm
2 1
D5085