External Lockout Indicator; Frequency Main Supply Anomaly; Internal Voltage Anomaly; Checking The Fan Motor - Riello RDB 2.2 BX 12 - 18 DGT Installation, Use And Maintenance Instructions

5.15.12 External lockout indicator

The burner is equipped with an external locking signal function,
i.e. to signal (together with the integrated reset push-button) a
burner locking alarm.
The control box enables the command of an external lamp by
way of the exit (230Vac-0.5Amp max).

5.15.13 Frequency main supply anomaly

The control-box automatically detects the value of the frequency
of the main supply in the range of 50 - 60 Hz, in both cases work-
ing times are verified. The fault is indicated by way of the blinking
LED (see section 5.15.2).
 If the anomaly is detected before heat demand the burner
does not start.
 If the fault is detected during the pre-purging, the burner
remains in purge condition and the fault is appropriately sig-
nalled.
 If the anomaly is detected during running position the burner
remains in operation.
When the anomaly disappears, the burner restarts.

5.15.14 Internal voltage anomaly

The control-box automatically detects if the internal voltage
works correctly. The fault is indicated by way of the blinking LED
(see section 5.15.2).
 If the anomaly is detected during the initialisation check time,
the burner does not start.
 If the anomaly is detected after a lockout the burner does not
start.
 If the anomaly is detected after a shutdown test the burner
does not start.
 The fault is not detected during normal running, the burner
remains in this state.
When the fault disappears, the burner restarts.

5.16 Automatic pre-heating deactivation (for burners equipped with heater)

It is possible to disable the pre-heater function in automatic
mode by pressing the reset push-button of the control box or the
remote reset.
Pre-heating deactivation
sequence
Allow the disabling of the pre-heating only
when there is no lockout or fault
Allow the disabling of the pre-heating using
the reset push-button or the remote reset.
Supply the burner and simultaneously keep
pressed the reset push-button or the remote
reset for 3 seconds.
Release the reset push-button or the re-
mote reset within 3 seconds.
The burner will start disabling the pre-heat-
ing only if the reset push-button or the re-
mote reset is released within 3 seconds.
Installation

5.15.15 Checking the fan motor

The control box automatically detects the presence of the fan mo-
tor and, in the event of a fault, it performs a lockout. The lockout
is indicated by the blinking led (see section 5.15.2).
5.15.16 Checking the electronic circuit controlling the
The control box detects the presence of a fault inside the elec-
tronic circuit controlling the oil valve, the fault is indicated by the
blinking led ("see section 5.15.2"):
 if the anomaly is detected during the initialisation, the burner
goes into lockout.
 if the anomaly is detected during the pre-purging, the burner
goes into lockout.
 During a recycling, if the fault is detected, the burner does
not start and goes into lockout.
 If the anomaly is detected during running position the burner
remains in operation.
The fault is not detected if the burner is in lockout.

5.15.17 EEprom check

The control-box automatically detects if EEprom memory of mi-
crocontroller has failed and will perform a lockout. The lockout is
indicated by blinking led (see section 5.15.2).
When the pre-heating is disabled, the pre-heating remains off
until:
– a lockout occurs
– the main supply voltage is interrupted
Colour of the
– there is a stop due to intermittent operation.
button led
The deactivation of the automatic pre-heating function is not lost
-
if the shut-down function is enabled.
-
RED
OFF
-
Tab. H
21
GB
oil valve
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