2915246
8
GB
BURNER START-UP CYCLE
Air-purge: loosen the screw placed on the minimal gas pressure switch mounted on the gas train
.
AIR PRESSURE SWITCH
The air pressure switch setting shall be carried out after having set all other
adjustments of the burner and the air pressure switch shall be at its lowest
set-point.
When the burner is operating, increase the adjustment pressure by turning
- slowly - clockwise the knob till reaching the burner lock-out.
Thereafter, turn the knob anticlockwise for 1 mbar and repeat the burner
start-up for checking the regularity: if lock-out intervenes turn the knob an-
ticlockwise for 0.5 mbar.
CAUTION:
do not turn the ionization probe, maintain the drawing position; should it be close to the ignition electrode, damage
may occur to the control box amplifier.
Screw
Plug for pressure measure
Pressure switch
S7506
1 ÷ 10
mbar
Adjustment knob
S7507
D2185
Probe position
Ignition electrode position
