5840
11
GB
4.7
BURNER START-UP PROGRAMME
(t
x
)
Factory setting: 20 s.
This time determines the heavy oil tem-
perature at ignition
.
It can be adjusted, in
accordance with the fuel’s viscosity, by
the timer 24) (Fig. 1). The diagram oppo-
site shows the suggested settings.
Motor lock-out
It is caused by the motor overload relay if overload
occurs or this is no phase.
NB.:
Periodically clean the filter of the pre-heater
tank.
4.8
THREE STAGE OPERATION
Lock-out because of no ignition
Normal
Thermostat
Motors
Ignition transformer
1
st
flame valve
2
nd
flame valve
Lock-out indicator
2848
Pre-washing
3
rd
flame valve
t
x
(
s
)
Viscosity at 50°C (
°E
)
D3211
t
x
max = 60 s
D2749
1
st
stage
2
nd
stage
3
rd
stage
0
max.
