Riello 20190698, Инструкции по установке, использованию и обслуживанию

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20190798 26 GB
Start-up, calibration and operation of the burner
Air adjustment
The air is adjusted by varying the angle of cam I) (Fig. 28 on
page 24) and by using the selector 2)(Fig. 29 on page 25).
To adjust the cam of the servomotor, see Fig. 31.
Key (Fig. 30)
1
Servomotor
2 Servomotor 1) - cam 4): fastened
3 Servomotor 1) - cam 4): unfastened
4 Variable profile cam
5 Screws for adjusting the adjustable profile
6 Screws for fixing adjustment
7 Screws for adjusting the end profile
8 Gas butterfly valve graduated sector
9 Index of graduated sector 8
5.5.4 Minimum output
MIN output must be selected within the firing rate range indicated
on Fig. 2 on page 9. Press button 2)(Fig. 29 on page 25) “Output
decrease” and keep it pressed until the servomotor reaches
(Fig. 31) the factory adjustment.
Air adjustment
Progressively adjust the end profile of the mechanical cam
4)(Fig. 30), using the screws 5).
For example, calibrate the minimum output to 800 kW, check the
emissions and if necessary increase or decrease the opening of
the air damper (see “Air adjustment” page 26).
Bring the output to 800 kW using the screws 5) of the mechanical
cam (Fig. 28 on page 24) and check the emissions.
Adjustment of gas delivery
The regulation of the air is carried out using the angle of the cam
III) of the servomotor (Fig. 28 on page 24) and by using the
selector 2)(Fig. 29 on page 25).
To adjust the cam of the servomotor, (Fig. 31).
NOTE:
The servomotor follows the adjustment of cam III only when
the angle of the cam is reduced. If it is necessary to increase
the angle of the cam, you must first increase the angle of the
servomotor by means of the “output increase” key, then
increase the angle of cam III, and finally bring the
servomotor to the position of MIN output, with the “Output
reduction” key.
To adjust cam III) (Fig. 31).
5.5.5 Intermediate outputs
Adjustment of gas delivery
No adjustment is required
Air adjustment
After adjusting the maximum and minimum output of the burner,
carry out air adjustment on higher intermediate positions of the
servomotor.
The passage from one position to the next one is obtained by
pressing the button 2) on the symbol (+) or (-) (Fig. 29 on
page 25). Press button 2)(Fig. 29 on page 25) “Output increase”
briefly so that the servomotor rotates by about 20°, see
servomotor graduated index (Fig. 31) and air damper graduated
index 5)(Fig. 30).
Screw or unscrew the screw 5) of the mechanical cam (Fig. 30)
to increase or decrease the gas output so as to adjust it to the
corresponding air output, to obtain optimal combustion.
Proceed in the same way with the other screws.
Switch off the burner using switch 1)(Fig. 29 on page 25), OFF
position, release the mechanical cam I) (Fig. 28 on page 24) to
separate the gears of the servomotor, pressing and moving
downwards button 3)(Fig. 31), then manually rotate the
mechanical cam I) (Fig. 31) backwards and forwards a few times
to check that the movement is smooth and without any hindrance.
As far as is possible, try not to move those screws at the ends of
the mechanical cam that were previously adjusted for the
opening of the gas butterfly valve to MAX and MIN output.
NOTE:
Once “MAX - MIN - INTERMEDIATE” outputs have been
adjusted, recheck the ignition: its noise must be equal to the
one of the following operation.
If you notice any sign of pulsations, reduce the ignition
stage delivery.
D891
Fig. 30
10
2
3
Fig. 31
ATTENTION
Take care that the cam profile variation is
progressive.
ATTENTION
It is recommended that the mechanical cam
5)(Fig. 30 on page 26) be bound again to the
servomotor by shifting button 3)(Fig. 31) upwards.