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0006081538_201308
ENGLISH
Wrong aDJUStment
CorreCt aDJUStment
Combustion head
Combustion head
Disk
Disk
knob for controlling and fastening the
combustion head
Combustion air intake shutter
wide open
Combustion air intake shutter
too closed
Air passageway wide
open
A i r p a s s a g e r e l a t i v e l y c l o s e d .
CAUTION: do not close completely
knob for controlling and fastening the
combustion head
knob for controlling and fastening the
combustion head
knob for controlling and fastening the
combustion head
ADJUSTUNG THE AIR ON THE
COMBUSTION HEAD
aDJUStIng tHe aIr on tHe ComBUStIon
HeaD Bgn 250 / 300 / 350 DSpgn-me
The combustion head has an adjustment device that allows the air
passage between the disk and the combustion head to be opened
(move backward) or closed (move forward). By closing the passage,
it is thus possible to obtain a high pressure upstream of the disk also
for low flow rates. The high speed and turbulence of the air provides
for its greater penetration into the fuel and therefore an excellent
mixture and flame stability. High air pressure upstream of the disk
may be necessary to prevent flame fluctuations, this is particularly
essential when the burner works on the combustion chamber that
is pressurized and/or at a high thermal load.
Avoid closing the combustion head completely and center
the head to the disk. An imperfect centring could cause a bad
combustion and overheating of the head with its subsequent
rapid deterioration.
• Check the proper adjustment using the spy glass placed on the
rear part of the burner scroll.
Содержание BGN 250 DSPGN ME
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Страница 51: ...23 26 0006081538_201308 ENGLISH WIRING DIAGRAM POSSIBLE CONNECTION TO EXTERNAL MODULATION...
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