02/2016 - Art. Nr. 4200 1046 8202A
14
Position of the ignition electrodes
4: VB2.38/45/54 VD
1. ..
nozzle/air nozzle distance (dimension Y)
VB2.38/54 VD: 2.5mm
VB2.66/95 VD: 4.5mm
Commissioning
Checking the combustion components
Recirculation
Setting the recirculation
An NO and CO measuring device may
be connected to obtain the correct
setting of the recirculation volume.
The width of the recirculation orifice can
be adjusted by axial movement of the
burner head in the burner pipe. The
positioning is adjusted with the setting
screw
A
, in accordance with the value
given in the setting data table. This value
can be read on the graduated scale
Y
.
Once the recirculation has been set, a
new start-up attempt may be made after
a rest time of 5 minutes. If the burner
does not start, or the start is delayed,
recirculation must be set using smaller
values on the scale, until a reliable start-
up can be ensured (cold start-up).
Alternatively, it is possible to reduce the
ventilation speed ignition position.
Do not operate the burner with a
recirculation orifice which is too
small or obstructed. This will cause a
significant increase in temperature
within the burner head, and risks
causing damage to the system.
Setting the ignition electrodes
The setting template supplied with the
burner may be used for the following
functions.
Position of the ignition electrodes
VB2.66/95 VD
Ignition electrode gap
VB2.38/54 VD: 3mm
VB2.66/95 VD: 4-5mm (without
template)
