PART III: OPERATION
21
Light oil operation
1
Set to the ON position the switch
S1
on the control panel of the burner.
2
Check the control box is not in the lockout position (light
B1
must be off); in such a case reset it by the reset pushbutton
S2
.
3
Check the series of thermostats (or pressure switches) sends the burner the signal 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
B4
on the burner control panel).
5
At the end of the pre-purge stage, the light oil solenoid valve EVG is energised (signalled by the lamp
O1, O2
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
B4
off).
7
After the ignition the servocontrol 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 showed by the
B2
LED turning on/off.
Fully modulating / Progressive Burners
Fig. 9 - Burner front panel
Keys
B1
Lock-out LED
B2
Hi-flame operation LED
B3
Lo-flame operation LED
B4
“Ignition transformer operation” LED
B5
“Fan motor overload tripped” LED
S1
Main switch
S2
Reset pushbutton for control box
S3
Operation selector MAN - AUTO (operation in manual or automatic mode):
MIN = operation with minimum output
0 = Stop
MAX = operation at the maximum output
O1
EVG1 solenoid valve operation LED
O2
EVG2 solenoid valve operation LED
O3
“Pump motor overload tripped” LED
O4
Oil pump in operation LED
A1
Burner Modulator (only on fully modulating burners)
I
S1
B1
S2
B2
B3
B4
B5
S3
O1
O2
O3
O4
A1
