30
OPERATION
1
Set to the ON position the switch A on the control panel of the burner.
2
Check the control box is not in the lockout position (light
B
must be off); in such a case reset it by the reset pushbutton
C
.
3
Check that the series of thermostats (or pressure switches) enables the burner to operate.
4
The startup sequence begins: the control box ignites the fan motor and energises the ignition transformer as well (signalled by the
light
H
on the burner control panel).
5
At the end of the pre-purge stage, the light oil solenoid valve EVG1 is energised (signalled by the lamp
G
on the control panel) and
the burner is on.
6
The ignition transformer is energized for few seconds after the ignition of the flame (post-ignition time) and at the end of this time is
de-energised (light
H
off).
7
After the ignition the actuator moves to the high flame position for some seconds, then the operation begins and the burner
switches to high flame or to low flame, according to the plant demand.
8
The high/low flame operation is shown by the
F
LED turning on/off.
Burner control panel
Keys
A
ON-OFF main switch
B
Lockout signalling lamp
C
Conreol box release pushbutton
D
Signalling lamp for light oil solenoid valve opening
E
Thermal cutout intervention signalling lamp
F
High flame operation signalling lamp
G
Low flame operation signalling lamp
H
Ignition transformer operation signalling lamp
P
Siemens modulator
Q
Manual operation mode switch
ATTENTION:
before starting the burner up, be sure that the manual cutoff valves are open. Be sure that the mains
switch is closed.
Fig. 28
B
P
C
Q
A
D
E
H
G
F
P
