Riello 20047690 Installation, Use And Maintenance Instructions page 29

Premix gas burners
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NOTE:
the three-digit number indicates the setting value for the pa-
rameter P0 / P1 or the parameter P2 as number of revs, and
must be multiplied by 10.
 Pressing the button "A" and the button "+" or "-", it is possible
to change the number of 10 rpm within pre-set limits (P0max,
P0min).
NOTE:
the setting for the parameter P0 must be greater than the set-
ting for the parameter P1. The values are checked by the
LME7. If the setting rules are violated, the appliance goes into
lockout mode, signalling a Loc error: 225.
 With the button "info" the setting value is confirmed in the
internal memory.
 The burner proceeds with the ignition phase. If at the end of
the safety time the flame does not appear, the burner restarts
in automatic mode (it carries out a maximum of 3 attempts).
The indications of the sequence of the phases on the display
continue to blink to signal that we are still in the start-up proce-
dure (manual operation). If the burner still does not fire, the
problem may be that gas is not reaching the combustion head
within the 3-second safety time. Turn the screw V1 of the gas
valve lightly towards the "+" sign (Fig. 15, page 21).
NOTE:
To go back to manual mode it is necessary to turn the "ON/
OFF" selector to "OFF" and repeat the procedure from the be-
ginning (keep the buttons "A" and "+" or "-" pressed simulta-
neously > 5 seconds; the display shows OFF blinking.
If the selector stays on "ON" the burner restarts in normal op-
erating mode (normally carries out all the stages of the igni-
tion without stopping, to the end of the pre-purging time, at
point P0).
 Turn the screw V1 towards the "+" sign (Fig. 15, page 21).
 The start-up proceeds. The burner is ignited, the program con-
tinues to the minimum load position P1. The display passes
from P1 to the number of revolutions expressed with three dig-
its.
 Pressing the button "A" and the button "+" or "-", it is possible
to change the number of 10 rpm within pre-set limits (P1max,
P1min).
 Check the appearance of the flame, if possible, or the value of
the CO and CO2 to understand whether the burner has been
sufficiently calibrated (first maximum calibration). If necessary
use the screw V2 of the gas valve (turn towards the "+" sign to
increase the gas, towards the "-" sign to decrease the gas)
(Fig. 15, page 21).
 With the button "info" the setting value is confirmed in the
internal memory.
 The burner proceeds to the maximum load position P2. The
display passes from P2 to the number of revolutions
expressed with three digits.
Start-up, calibration and operation of the burner
27
ALARM
NOISE
S8604
Key (Fig. 23)
"OFF/ON" switch
"RESET" signal button
"POWER ON" signal
"CALL FOR HEAT" signal
"ALARM NOISE" acoustic signal
"ALARM SILENCE" button
"VALVE ON" signal
"OPTIONAL HOLE" available
GB
OPTIONAL
HOLE
Fig. 23
20051011

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Rx 500 s/pvRx 400 s/pv20051010

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