5.9
Electrodes setting
These dimensions Fig. 11 must be respected.
WARNING
To access the electrodes carry out the operation described,
see paragraph "Operating position" on page 13.
5.10 Fuel heating
In order to assure regular ignition and operation even at low tem-
peratures the burner has a light oil heater fitted in combustion
head.
The heater turns on when the thermostats close. The enabling
signal for burner start up comes through a thermostat on the noz-
zle holder once the optimal ignition temperature is reached.
The heating remains on during operation and cuts out when the
burner shuts down.
20138077
Installation
To adjust, proceed as follows:
Rest the diffuser disc-holder assembly 1)(Fig. 11) against
0
4.5
- 0.5 mm
2
4
3
1
D5343
5
16
GB
the nozzle holder 2)(Fig. 11) and lock it in place with the
screw 3)(Fig. 11).
For any adjustments of the electrode assembly 4), loosen
screw 5)(Fig. 11).
2 - 2.5
mm
5.5 ±
0.3 mm
Fig. 11