Riello RLS 310/M MX, Modulating Operation

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20084880 30 GB
Start-up, calibration and operation of the burner
6.4 Burner start-up (light oil)
Electrically power the burner using the disconnecting switch
on the boiler panel.
Position the selector 23)(Fig. 6 on page 15) on “
OIL ” to select
light oil as fuel.
Close the thermostats/pressure switches and set the switch
1)(Fig. 30) to
MAN .
Start of the fan motor. As the burner is not fitted with a device to
check the sequence of the phases, the motor rotation may be in-
correct.
As soon as the burner starts to position itself in front of the cooling
fan of the fan motor, check that this turns anti-clockwise or else
in the direction of the arrow 25)(Fig. 5).
If this is not the case:

place the switch 1)(Fig. 30) to “ OFF ” and wait for the control
box to carry out the switching off phase;

invert the phases on the three-phase power supply;

repeat the start-up procedure.
6.5 Burner ignition (light oil)
Position the selector 1)(Fig. 30) on “ MAN ”.
Position the selector 23)(Fig. 6 on page 15) on “ OIL ” to select
light oil as fuel.
At the closing of the limit thermostat (TL), you must start the burn-
er.
At first ignition, there is a momentary drop in fuel pressure due to
the filling of the nozzle piping. This lowering of the fuel pressure
can cause the burner to lockout and can sometimes give rise to
pulsations.
If the burner locks out again, see the chapter see “Faults - Possi-
ble causes - Solutions” on page 44.
Once the following adjustments have been made, the ignition of
the burner must generate a noise similar to the noise generated
during operation.
DANGER
disconnect the burner's electrical supply, since
this operation should be carried out when there is
no electrical supply;
WARNING
Make sure that the lights or testers connected to
the solenoids, or the pilot lights on the solenoids
themselves, indicate that no voltage is present.
If voltage is present, stop the burner
immediately
and check the electrical wiring.
Fig. 30
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