Riello RLS 190/M MZ, Инструкции по установке, использованию и обслуживанию

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3 - MIN OUTPUT
Min output must be selected within the firing rate
range shown on page 5.
Press button 2)(A)p.15 “output reduction” until
the servomotor has closed the air gate valve
and the gas butterflu valve to 30° (factory set
adjustment).
Adjusting gas delivery
Measure the delivery of gas from the gas meter.
- If this value is to be reduced, decrease the
angle of cam III (A) slightly by proceeding a
little at a time until the angle is changed from
30° to 28° - 26°....
- If it has to be increased press the button “out-
put increase” 2)(A)p.15 (i.e. open the gas but-
terfly valve by 10-15°), increase the cam III
angle (A) with small successive movements,
i.e. take it from angle 30° to 32° - 34°....
Then press the button “output decrease” until
the servomotor is taken to the minimum open-
ing position and measure the gas delivery.
Note
The servomotor follows the adjustment of cam
III only when the cam angle is reduced. If it is
necessary to increase the cam angle, first
increase the servomotor angle with the key “out-
put increase”, then increase the cam III angle,
and finally bring the servomotor back to the MIN
output position with the key ”output decrease”.
In order to adjust cam III, especially for fine
movements, the key 10)(A), held by a magnet
under the servomotor, can be used.
Adjustment of air delivery
Progressively adjust the starting profile of cam
4)(B)p.15 by turning the screws 5).
It is preferable not to turn the first screw since
this is used to set the air gate valve to its fully-
closed position.
4 - INTERMEDIATE OUTPUTS
Adjustment of gas delivery
No adjustment of gas delivery is required.
Adjustment of air delivery
Press the button 2)(A)p.15 “output increase” a
little so that the servomotor turns by about 15°.
Adjust the screws until optimal combustion is
obtained. Proceed in the same way with the
other screws.
Take care that the cam profile variation is pro-
gressive.
Switch off the burner using switch 1)(A)p.15, at
“OFF” position, disengage the cam 4)(B)p.15
from the servomotor, by pressing the button
3)(A) and moving it to the right, and check more
than once that the movement is soft and
smooth, and does not grip, by rotating the cam
4) forward and backward by hand.
Engage the cam 4) to the servomotor again by
moving the button 2)(A) to the left.
As far as is possible, try not to move those
screws at the ends of the cam that were previ-
ously adjusted for the opening of the air gate to
MAX and MIN output.
Finally fix the adjustment by turning the screws
6)(B)p.15.
N.B.
Once you have finished adjusting outputs MAX -
MIN - INTERMEDIATE, check ignition once
again: noise emission at this stage must be
identical to the following stage of operation. If
you notice any sign of pulsations, reduce the
ignition stage delivery.
(A)
D889