6
x
Oil burner
44
FA ROTEX A1 BO - 10/2007
Tools required
: Flue gas analysis unit for determining the emission values for NO
x
and CO in the flue gas.
• Connect the flue gas analysis unit.
• Adjust the position of the recirculation gap with adjusting screw (for setting, see tab. 6-1).
• Shut down and wait for about 5 minutes.
• Restart the burner.
Î
Burner does not start or is late: Reduce the width of the recirculation gap (lower scale value).
• Check emission values for NO
x
and CO (observe country-specific regulations).
6.3.6 Check and set electrode distance and the distance between oil nozzles and air nozzles
Checking and setting electrodes distance
Tools required
: Feeler gauge "Blue Flame Meter" (fixed on the holder for the service position);
• Put burner in service position (see chapter 6.4).
• Check electrode distance and position with feeler gauge "Blue Flame Meter".
• If necessary, readjust electrodes by bending them.
CAUTION!
If the recirculation gap is too small or closed, it will cause a sudden temperature rise in the mixing device and
can damage the mixing device.
a
Mixing unit
b
Ignition electrodes
c
Fixing screw
d
Light tube
e
Oil nozzle
f
Air nozzle
g
Nozzle rod
X1
Electrode position BL 15, BL 20
and BL 27
X2
Electrode position BL 35
Y
Distance oil nozzle – air nozzle
Fig. 6-8
Check electrodes setting and distance oil nozzles - air nozzles
If the ignition electrodes are worn out, they must be replaced.
Notes on replacing the ignition electrodes are given in section 8.2.8.
