EN
Start up
Adjusting burner output
A
B
Servomotor SQN75
Remove cover to enter the adjusting
cams. Adjust cams through the suitable
key (on issue) and a screwdriver.
I
- Adjusting cam (BLUE) for air damper
position on burner's shutdown
(total close 0°).
II - Adjusting cam (ORANGE) for ope-
ning position in ignition and Low Flame
(by the screwdriver).
III - Adjusting cam (RED) for opening po-
sition in High Flame (max. output).
IV - Adjusting cam (BLACK) to allow the
opening of High flame solenoid valve.
(5): MANUAL RELEASE SWITCH
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5
Adjustment of gas solenoid valve
Refer to the gas train manual for
the gas setting of the gas train
selected.
Optimising combustion values
The factory setting shall be modified
according to the output requeired.
WARNING
requirements demanded of ue gas ducts
for avoiding condensation.
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Firing head setting (1).
To act on the screw in fi gure:
• turn Allen key till you reach the
requested value (index 1-5).
output of the burner. Optimise combustion
values in the event of CO formation. CO
must not exceed 50 ppm.
N.B. observe the minimum required
flue gas temperature specified by
the boiler manufacturer and the
Warning: Recording of initial
commissioning data is recom
mended.
Risk of air blast!
Continuously check CO, CO 2 and
soot emissions when adjusting the
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