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OPERATING DESCRIPTION
FURTHER INSTRUCTIONS TO START A MIXED BURNER
It is advisable to perform the first ignition with liquid fuel (switch 2
in ON position, Oil led comes on) because in this case delivery is
conditioned by the available nozzle, whereas the delivery of methane
can be varied as you like by adjusting its flow-rate regulator.
It is not advisable to have too large a burner for the boiler for heating
and for hot water as the burner may work for long periods with a
single flame, making the boiler work at lower than required output; as
a result of this the combustion products (fumes) emerge at too low a
temperature (at about 180°C in the case of heavy oil and 130°C with
diesel fuel), causing soot to build up at the chimney outlet.
IMPORTANT
When the boiler is working at a lower output than that indicated
by the technicians, it is likely that acidic condensate and soot
will form in the boiler with the result that it will quickly corrode
and get clogged up.
When the two-flame burner is installed on a water boiler for heating
use, it must be connected so that it works normally with both flames,
completely stopping without passing to the first flame when the preset
temperature is reached.
To obtain this operating condition, do not install the second flame
thermostat and make a direct connection (bridge) between the
respective four pole plug terminals.
In this way only the burner's capacity to switch on at low rate is used
for a gentle ignition, which is essential for boilers with a pressurised
combustion chamber and also very useful for normal boilers with
depression combustion chamber. The burner (start/stop) command is
subject to the usual operating or safety thermostats.
Burner operation is fully automatic; it starts up by enabling the main
switch and the control panel switch.
Burner operation is managed by the electronic command and control
equipment.
The "lock-out" position is a safety position that the burner automatically
assumes when a burner or system component is not working properly.
Make sure that there are no faults in the heating plant before re-
activating the burner by "resetting it".
The burner may stay in the lock-out position without any time limits.
To reset it, press the specific button (RESET).
Lock-outs may also be caused by temporary faults; in these cases if it
is reset, the burner will start up without any difficulties.
If lockings continue to occur (3-4 times), do not continue with the
operation and, after having checked that the fuel arrives to the burner,
ask the intervention of the After-sales Service in your area.
Reset
4
5
1
1)
Main switch ON - OFF
2)
Thermostatic line switch
3)
display
4)
Appliance shutdown indicator light
5)
Power LED
6)
Fan lock-out if present
7)
Gas operation light
8)
Liquid fuel operation indicator light
9)
Pump motor lock
10)
Fuel switch (gas/liquid fuel)
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ENGLISH
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