Preparations For Start Up; Combustion Adjustment - baltur BTL 20 Betriebsanleitung

PREPARATIONS FOR START UP

Control that the nozzle applied is suitable for the boiler potentiality. The table shows the delivery rates in kg/h of light
oil with respect to the nozzle size and the pump pressure (normally 12 bar). It should be remembered that 1 kg of
light oil is equivalent to approximately 10.200 kcal). Make sure that the return pipe in the tank has no obstructions,
e.g. gate valves, closed plugs etc. Any eventual obstruction would cause a breakage in the sealing surface situated
on the pump shaft. Close the main switch and the boiler thermostats in order to start up the motor and the ignition
transformer. Upon completion of the pre-ventilation time, the solenoid valve is activated. the electrovalve will cut in
and expose the photoresistant cell to a source of light until the burner stops (shut down).
When the pipelines have been filled up (and when fuel has come out of the nozzle), stop the burner and put the
photoresistant cell back in its seat.
NOTE: Should it be necessary to purge air, this can be done by loosening the special fitting which the pump is
provided with (see 0002901310). Do not illuminate the photoresistant cell before the electric valve has cut in
because, in this case, the control box will go to "shut down".
IGNITION AND ADJUSTMENT
Loosen the lock screw "C" (see 0002934110); act on the screw "A"; bring the air regulation damper into
the necessary position as indicated by index "B". Turn the main switch to ON to power the burner and
thus ignite it. Correct, if necessary, combustion air delivery by acting on the intake damper and the
position of the deflector disk (adjustable via screw D). The burner is, in fact, fitted with a special screw
to adjust the position of the deflector disk; this device allows for optimisation of combustion by
reducing or increasing the air flow between deflector disk and head. It is normally necessary to reduce
the air flow between deflector disk and head when there is reduced fuel delivery: this passage must be
proportionately more open when the burner is working with a higher fuel delivery rate. After modifying
the position of the deflector disk it is, usually, necessary to correct the air damper positions and
afterwards check for proper ignition.
A AIR REGISTER OPENING ADJUSTER
- Reference index in position "0" register closed
- Reference index in position "6" register open
B AIR REGISTER OPENING ADJUSTER
REFERENCE INDEX
C AIR REGULATION LOCK SCREW
D DEFLECTOR DISK ADJUSTER SCREW
E DEFLECTOR DISK POSITION INDEX (0 = MIN; 7 = MAX)

COMBUSTION ADJUSTMENT

ONE STAGE LIGHT OIL BURNERS
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