C.I.B. UNIGAS - M039175CD
31
the gas valves opening, the transformer is de-energised and the LED
I
turns off.The burner is now operating and at the same time
the servocontrol moves to the hi-flame position (90° - see page 21).
9
Some seconds after the gas valves opening, the burner starts the automatic operation: it automatically switches to low or high
flame stage (progressive PR- burners) or to the operation requested by the burner modulator (Fully modulating - MD buners)
according to the requirements of the plant. As far as the modulator is concerned, refere to the related manual.
Fig. 29 - Burner front panel
Key
A
Main switch
B
Lock-out LED
C
Reset pushbutton for control box
D
Reset pushbutton for gas proving system (only
for burners provided with Siemens LDU11)
E
“Gas pressure switch signal ” LED
F
“Lock-out” LED for gas proving system
G
Hi-flame operation LED
H
Lo-flame operation LED
I
“Ignition transformer operation” LED
L
“EV2 opening” LED
M
“EV1 opening” LED
N
“Fan motor overload tripped” LED
O
“Burner in stand-by” LED
P
Burner Modulator (only on fully modulating bur-
ners)
M
F
D
P
A
C
E
L
N
G
H
B
I
O
