baltur BTG 20 LX, Инструкция

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TWO STAGE PROGRESSIVE NATURAL GAS BURNERS
AIR REGULATION ON COMBUSTION HEAD
Warning: When, as in this case, the burner is provided with gas valves model MB-VEF...., by moving the air
regulation device on the combustion head there
automatically and unavoidably occurs a gas output
variation (see chapter Valve operation principle, model MB-VEF...).
The combustion head is equipped with a regulation device, so as to open or close the air passage between disk
and head. By closing the passage, it is thus possible to obtain a high pressure upstream of the disk also for low
flow rates. The high air speed and turbulence allows a better penetration of the same into the fuel and therefore,
an excellent mixture and flame stability. It may be necessary to have a high air pressure upstream of the disk, so
as to prevent flame pulses. This condition is indispensable when the burner operates on pressurised combustion
chamber and/or with high heating load. From what said above it is evident that the device closing the air on the
combustion head must be set to such position as to
always obtain, behind the disk, a very high air pressure value.
It is advisable to regulate so as to have such air closure on the head as to require the opening of the air damper
regulating the flow of the burner ventilator suction. Of course, this condition must only occur when the burner is
operating at the maximum desired output.
In practice, the regulation must start with the device that closes the air on the combustion head in an intermediate
position, igniting the burner for an indicative regulation as explained above.
When the
maximum desired output is reached, correct the position of the device closing the air on the combustion
head by moving it forwards or backwards (0002934190) so as to have a suitable air flow for the output,
with suction air regulation damper sensibly open.
N.B. To facilitate the combustion head regulation, see table (n° 0002934170).
When reducing the air passage on the combustion head, avoid closing it completely, which may cause an
excessive heating of the head with a consequent quick deterioration.
N.B. Check that ignition is regular because if the controller has been moved forward, the output air speed could
be so high as to make ignition difficult. In such a case, it is necessary to move backwards, degree by
degree, the regulator until reaching the position in which the ignition is regular and accept this new position
as definitive. We still remind you that it is preferable, for the small flame, to limit the air quantity to the
minimum indispensable to have a safe ignition even in the most demanding case.
D DEFLECTOR DISK ADJUSTER SCREW
E DEFLECTOR DISK POSITION INDEX (0 = MIN; 3 = MAX)
COMBUSTION ADJUSTMENT
0002934190