2374
7
ELECTRODE SETTING
BURNER START-UP CYCLE
ONLY FOR LIGHT OIL
ADJUSTMENTS, TO AVOID FLAME - DETACHMENT, AT BURNER - IGNITION
This inconvenience can occur, when the temperature of the gas-oil decreases below +8 °C.
1) CORRECT POSITIONING OF THE ELECTRODES (see figure above)
2) PUMP - SETTING
When the temperature of the gas-oil decreases below + 8 °C, increase the pressure to 14 bar.
3) COMBUSTION-HEAD SETTING
Regulate the combustion-head one set-point further ahead than indicated in the instructions.
Example:
the instructions require to set the combustion-head on set-point 3.
Instead, the setting is made on set-point 4.
4) FAN - AIR DAMPER ADJUSTMENT
Adjust the damper, reducing the excess air until the Bacharach number is not near 1.
(i.e. a combustion with the lowest possible excess-air).
Attention:
Before removing or assembling the
nozzle, loosen the screw
(A)
and
move the electrodes ahead.
2 – 2.3
mm
4
±
0.3 mm
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
D5230
A
Normal
Lock-out, due to light-failure
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
~
12s
D5229
~
12s
~
5s
