PART III: OPERATION
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LIMITATIONS OF USE
THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNEC-
TED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDE-
RED IMPROPER AND THEREFORE DANGEROUS.
THE USER MUST GUARANTEE THE CORRECT FITTING OF THE APPLIANCE, ENTRUSTING THE INSTALLATION OF IT TO
QUALIFIED PERSONNEL AND HAVING THE FIRST COMMISSIONING OF IT CARRIED OUT BY A SERVICE CENTRE AUTHORI-
SED BY THE COMPANY MANUFACTURING THE BURNER.
A FUNDAMENTAL FACTOR IN THIS RESPECT IS THE ELECTRICAL CONNECTION TO THE GENERATOR’S CONTROL AND
SAFETY UNITS (CONTROL THERMOSTAT, SAFETY, ETC.) WHICH GUARANTEES CORRECT AND SAFE FUNCTIONING OF
THE BURNER.
THEREFORE, ANY OPERATION OF THE APPLIANCE MUST BE PREVENTED WHICH DEPARTS FROM THE INSTALLATION
OPERATIONS OR WHICH HAPPENS AFTER TOTAL OR PARTIAL TAMPERING WITH THESE (E.G. DISCONNECTION, EVEN
PARTIAL, OF THE ELECTRICAL LEADS, OPENING THE GENERATOR DOOR, DISMANTLING OF PART OF THE BURNER).
NEVER OPEN OR DISMANTLE ANY COMPONENT OF THE MACHINE EXCEPT FOR ITS MAINTENANCE.
TO SECURE THE MACHINE, ACT ON THE ISOLATOR SWITCH. IN CASE OF ANOMALIES THAT REQUIRED A SHUT DOWN OF
THE BURNER, IT’S POSSIBLE TO ACT ON THE AUXILIARY LINE SWITCH, LOCATED ON THE BURNER FRONT PANEL.
IN CASE OF A BURNER SHUT-DOWN, RESET THE CONTROL BOX BY MEANS OF THE RESET PUSHBUTTON. IF A SECOND
SHUT-DOWN TAKES PLACE, CALL THE TECHNICAL SERVICE, WITHOUT TRYING TO RESET FURTHER.
WARNING: DURING NORMAL OPERATION THE PARTS OF THE BURNER NEAREST TO THE GENERATOR (COUPLING
FLANGE) CAN BECOME VERY HOT, AVOID TOUCHING THEM SO AS NOT TO GET BURNT.
Gas operation
Turn to the ON position the mains switch S1 on the burner front panel.
Check the flame control box is not in the lockout position (light B1 on), if necessary reset it by means of the pushbutton S2 (reset);
Check that the control thermostats or pressure switches enable the burner to operate.
Check the gas supply pressure is sufficient (light G3 on), if necessary, adjust the pressure switches.
Only burners provided with the gas proving system:
the check cycle of the gas proving system starts; the end of this check is
signalled by the light of the lamp on the device. When the valves check is finished, the startup cycle of the burner begins. In the case of
a leak in a valve, the gas proving system locks and the lamp G4 lights. To reset the device press the device pushbutton.
The startup cycle begins, the actuator drives the air damper to the maximum opening position, the fan motor starts and the pre-pur-
gue phase begins. During the pre-purgue phase, the complete opening of the air damper is signalled by the lamp B2 on the frontal
panel of the electrical board.
At the end of the pre-purgue phase, the air damper goes to the ignition position, the ignition transformer turns on (signalled by the
lamp B4) and few seconds later the solenoid valves EV1 and EV2 are energized (lights G1 and G2 on the front panel).
Few seconds after the opening of the valves, the ignition transformer turns off and the lamp B4 turns off subsequently:
Double-stage burners:
the burner is on in low flame stage (light G is on); some seconds later, the high flame operation begins and the
burner switches automatically to high flame (light B2 is on) or remains in low flame operation, accordign to the plant requests.
Progressive and fully modulating burners
- few seconds after the gas valve opening, the ignition transformer is de-energized. The
burner is in low flame operation and some seconds later, the two-stages operation begins; the burner increases or decreases its output,
directly driven by the external thermostat (progressive version) or by the modulator (fully modulating burners only).
DANGER! Incorrect motor rotation can seriously damage property and injure people.WARNING: before starting
the burner up, be sure that the manual cutoff valves are open and check that the pressure upstream the gas train
complies the value quoted on paragraph “Technical specifications”. Be sure that the mains switch is closed.
DANGER: During commissioning operations, do not let the burner operate with insufficient air flow (danger of
formation of carbon monoxide); if this should happen, make the gas decrease slowly until the normal combustion
values are achieved.
WARNING: never loose the sealed screws! otherwise, the device warranty will be immediately invalidate!
PART III: OPERATION
