baltur GI 350 DSPG Manual De Instrucciones página 41

REGULATION OF THE COMBUSTION HEAD
AND FLAME DISK
The burner is equipped with a combustion head which can
be regulated (by moving it backwards or forwards) in such a
way as to close more or open more the air passage between
the disk and the head.
By throttling the passage, it is possible to achieve high pres-
sure upstream the disk, and therefore high velocity and air
turbulence for low inputs as well.
High velocity and air turbulence ensure better penetration in
the fuel and are therefore an optimum mixture and allow the
burner to operate with good flame stability.
High air pressure, upstream the disk, might be necessary in
order to avoid flame pulsations, and it is considered practically
indispensable when the burner is operating with a pressurized
furnace and/or high thermal load.
that the position of the device which regulates the air on
the combustion head should be put in such a position as to
always obtain a decidedly high air pressure value behind the
disk. It is advisable to regulate in such a way as to achieve
a throttling of the air between the disk and the head; this will
necessitate a considerable opening of the air shutter which
regulates the flow to the burner's fan suction.
Obviously these adjustments should be carried out when the
burner is operating at maximum delivery desired. In practice,
commence regulating with the combustion head in an interme-
diate position, start up the burner and make a first adjustment
as previously described. When maximum delivery desired
has been reached, proceed with correcting the position of the
combustion head; move it backwards and forwards in such a
way as to obtain an air flow suitable for the fuel delivery with
the air regulation in suction considerably open.
If the combustion head is pushed forwards (which causes a
reduction in the air passage between the head and the disk),
avoid closing it completely.
When regulating the combustion head, proceed with centering
it perfectly with respect to the disk.
It must be pointed out that, if perfect centering with respect
to the disk is not obtained, bad combustion and excessive
heating of the head could occur which would result in its
rapid deterioration.
A control can be carried out by looking through the spy
holes situated on the back of the burner; then tighten home
the screws that lock the combustion head in position. The
distance between the disk and the nozzle, regulated by the
manufacturer, must be reduced only if the atomized fuel cone
coming out of the nozzle wets the disk and fouls it up.
GENERAL DIAGRAM AIR REGULATION
It is evident from above,
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INCORRECT REGULATION
Combustion head
Flame disk
Air flow large
opening
Combustion air inlet with very
locked shutter
CORRECT REGULATION
Combustion head
Air flow quite
locked.
ATTENTION:
Avoid complete
locking.
Combustion air inlet with very
opened shutter
Control and fixing knobs of combu-
stion head
Control and fixing knobs of com-
bustion head
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