AIR ADJUSTMENT
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Part. 1
Part. 2
Part. 3
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COMMUTATORE
0
AUTO
0 =
bloccaggio degli apparati per il
funzionamento in una posizione intermadia
=
funzionamento alla massima potenza
=
funzionamento alla minima potenza
AUTO =
funzionamento automatico
operating elements locked in an intermediate position
operation on maximum capacity
operation on minimum capacity
automatic operation
SELECTOR
BURNER START-UP AND ADJUSTMENT
Once having installed the burner, check the following items:
- The burner power feeding and the main line protection fuses
- The correct length of pipes and that the same are sealed.
- The type of fuel, which must be suitable for burner.
- The connection of boiler’s thermostats and all the safeties.
- The motor rotation direction.
- The correct calibration of the motor’s thermal protection.
When all the above mentioned conditions are checked and accomplished, it is possible to go on with burner’s tests.
Power the burner. The control box feeds the ignition transformer and the burner’s motor at the same time, which will
run a prepurging of the combustion chamber for about 20 sec.
At the end of prepurging, the control box opens solenoid valves and the burner starts. After a safety interval of 5
seconds and a correct ignition, the control box turns off the ignition transformer and, 10 seconds later, sets the moto-
rised air damper to its maximum opening (High flame). In case of faulty ignition, the control box switches the burner
into safety condition within 5 second. In such a case, the manual rearming of the burner shall not take place before 30
seconds have elapsed from the burner’s safety shutdown. In order to obtain an optimal combustion, it is necessary
adjust the LOW - HIGH flame air flow, according to the instruction given further on. During such a phase, it will be
possible to manually switch between HIGH and LOW flame and viceversa, through the High/Low flame switch. At
the end of the adjusting phase, leave the switch in position AUTO.
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FIRING HEAD SETTING
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DISASSEMBLY FIRING HEAD
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420010351103
Maior P 500/600 PR
