Air Regulation On The Combustion Head; Ionisation Current - baltur BTG 3,6P Instruction Manual

AIR REGULATION ON THE COMBUSTION HEAD

The combustion head is equipped with a regulation device that makes
it possible to open or close the air passage between the disk and the
head.
Closing the air passage increases the pressure upstream of the disk
also with 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.
It may be necessary to have high air pressure upstream of the disc, so
as to prevent flame pulses. This condition is indispensable when the
burner operates on pressurised combustion chamber and/or with high
heating load.
Therefore the air regulation device on the combustion head must be
set to such position as to always obtain, behind the disc, a very high
pressure value.
To do this fasten the device in an intermediate position on the head air
closure, and act on the air damper by increasing the fan intake flow;
needless to say that this condition must occur when the burner is
working at the maximum capacity required by the system.
Correct the position of the device that closes the air of the combustion
head, moving it forward or backward, in order to obtain an air flow
suitable for the supply with the air damper considerably open.
When reducing the air passage on the combustion head, make sure
not to completely close it.
Check that the ignition takes place properly, if the opening is excessive
there might be strong air turbulence, thus difficult ignition.

IONISATION CURRENT

The minimum ionisation current needed to run the equipment is 3
µA.The burner flame generates a significantly higher current, which
usually does not require any control by the equipment.Should the
ionisation current need to be measured, a microammeter must be
connected in series to the ionisation electrode lead by opening the
connector "C", see wiring diagram.
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