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Les langues disponibles
DESCRIPTION OF
OPERATIONS
By closing the main switch (1), and
if the thermostats are closed, volt-
age will reach the cyclic relay motor
which will then start operating. The
fan motor is then turned on and it
will carry out a pre-ventilation of the
combustion chamber. At the same
times the motor which controls the
combustion air shutter moves the air
shutter to the correct open position
for the 2nd flame. Pre-ventilation
of the combustion chamber takes
place when the air shutter is open at
the 2nd flame position. At the end of
the pre-ventilation phase, the com-
bustion air shutter is taken back to
the 1st flame position ignition takes
place and, after three seconds, the
principle and safety gas valves open
and the burner starts up.
We should point out that:
a) The two-stage principle valve is
fitted with a device, which regu-
lates gas delivery for the let and
2nd flames (see specific instruc-
tions for the 2-stage valve model
fitted to the burner).
b) The safety valve is an ON/OFF
version (see specific instruc-
tions for valve model fitted to the
burner).
Flame presence detected by its own
relative control device, permits the
continuation and completion of the
ignition phase with the disconnec-
tion of the ignition transformer.
Control box or
Safety
Preventilation
programmer
time
s
LFL 1.333
3
8
4
1 Main ON-OFF switch
2 Control box release button
3 1st / 2nd stage switch
4 Safety fuses
5 Transformer on light
Subsequently, the 2nd flame is
inserted (there is an increase in
combustion air and the principle
valve is open at the 2nd stage posi-
tion). In the case of flame failure, the
control box activates a "safety shut
down" within three seconds of the
opening at the let flame position of
the principle valve. When there is a
"safety shut down", the valves are
immediately re-closed. To unblock
the control box from the safety posi-
tion push the luminous button on the
control panel.
Pre-
Post-
time
ignition
ignition
s
s
s
31,5
6
3
0006081054_200810
5
7
9
6
1
2
NOTE:
The air shutter is activated by an
electric motor (see specific instruc-
tions in the following pages). It
should be kept in mind that when the
burner comes to a standstill due to
the intervention of the thermostats,
the air shutter will be taken back to
its completely closed position (ener-
gostop) by its electric motor.
Time between opening
Cut out of pilot flame
of pilot valves and
after opening of
opening of main valves
s
12
41 / 112
10
3
6 1st stage working light
7 2nd stage working light
8 Fan working light
9 Live voltage light
10 Control box lock-out light
Time between opening
1st flame valve
main valves
and 2nd flame valve
s
3
12
s
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