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 motori-
sed 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 adju-
st the LOW - HIGH flame air flow, according to the instruction given further on. During such a phase, it will be possi-
ble 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.
LANDIS LMO 44 CONTROL INFORMATION SYSTEM
In case of burner lockout, it is possible to read which cause originated it. Proceed as follows: with the burner in lockout
mode (red LED switched on) keep pressed the lockout button for more than 3 sec. then release it. The red LED will
blink according to the following error code list:
Error Code
Possible cause
2 blinks
No establishment of flame at the end of «TSA»
- Faulty or soiled fuel valves - Faulty or soiled flame detector - Poor adjustment of burner,
no fuel - Faulty ignition
3 blinks
Free
4 blinks
Extraneous light on burner start-up
5 blinks
Free
6 blinks
Free
7 blinks
Too many losses of flame during operation (limitation of the number of repetitions)
- Faulty or soiled fuel valves - Faulty or soiled flame detector - Poor adjustment of burner
8 blinks
Time supervision oil pre-heater
9 blinks
Free
10 blinks
Wiring error or internal error, output contacts
The diagram illustrates the fuel feeding system of these types of burners, which incorporates a by-
pass nozzle with oil flow regulation on its return pipe. The oil supply is varied by acting on the
nozzle through the pressure in the return line. Max. oil supply is therefore reached when the
pressure in the pump line is about 22 bar and the return line is fully closed; min. oil supply
when the return line is fully open. Relevant pressure readings in the return line are as fol-
lows:
Pump pressure 22-25 bar.
Max Burner output, return oil pressure:
FLUIDICS nozzle : 16 ÷19 bar.
BERGONZO nozzle : 20 ÷24 bar.
Min Burner output, return oil pressure:
FLUIDICS nozzle : 6 ÷9 bar
BERGONZO nozzle : 4 ÷8 bar
BURNER START-UP AND ADJUSTMENT
OIL DELIVERY ADJUSTMENT
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420010355002 Maior P 45/60/80/120 PR
EN