2325
7
GB
Fig. 13
– Remove nozzle-holder assembly (1) after
loosing screws (2) and nut (3), remove the
small cables (4) from the control box, the
photoresistance (6) and the socket (10).
– Withdraw the small cables (4) from the
electrodes, remove the diffuser disc-holder
assembly (11) from the nozzle-holder as-
sembly (1) after loosing screw (3, fig. 11,
page 5).
– Screw the nozzle (12) correctly and
tighten it as shown in figure.
ATTENTION
During the reassembly of the nozzle-holder
assembly screw the nut (3) as shown in the
figure below.
PUMP PRESSURE
– The pump leaves the factory set at 12 bar.
– To change it act on pump pressure adjust screw (5, fig. 7, page 4).
COMBUSTION HEAD SETTING
(see fig. 13)
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 0.85 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
assembly (1) as shown in the schedule.
AIR DAMPER ADJUSTMENT
(see fig. 13)
– To vary the setting adjust the screw (7) after loosing the nut (8).
– Values in the table refer to 12% CO
2
and to sea level.
– When burner shuts down the air damper automatically closes till a max. chimney depressure of 0.5 mbar.
B
S7202
Fig. 13
3
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
D5684
2
3
4
