Beretta NOVELLA 55 RAI Installation Manual page 21

The boiler will now start up and the burner will
remain lit until the set temperature is reached.
If any ignition or functioning errors occur, the
boiler enters "LOCK-OUT" and the red LED
on the control panel comes on to indicate this
(fig. 4.5).
Proceed as follows to reset the safety ther-
Fig. 4.5
mostat.
- Wait for about 1 minute, then press the "bur-
ner reset" button (fig. 4.6).
- Wait for the burner to complete the entire
start-up cycle again, up to the ignition of
the flame.
The boiler will also shut down if the flue gas
thermostat trips. To reset the boiler in this
Fig. 4.6
case, remove the hood and reset the flue gas
thermostat (fig. 4.7).
b
If the flue gas thermostat trips repea-
tedly, make sure that the flue gas pipes
are not blocked and that the flue is pro-
perly constructed.
b
Novella boilers are equipped with a fac-
tory-calibrated minimum pressure switch
Fig. 4.7
for the gas supply. This shuts down the
boiler if the gas supply pressure is not
sufficient to ensure correct functioning.
Operation of this pressure switch is
not signalled.
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