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Beretta EXCLUSIVE BOILER GREEN HE 35 B.S.I. Manual Para El Instalador Y El Usuario página 15

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24
Working the boiler
Adjust the ambient thermostat to the required temperature (approx.
20 °C). If there is a demand for heating water, the boiler starts
and the
symbol is shown on the display (fig. 25). The boiler
will remain working until the set temperatures are reached, after
which it will go on stand-by. In the event of ignition or operating
faults, the boiler will perform a "safety stop".
The flame symbol
will go out and the fault code and
be displayed (fig. 26). For a description of faults and how to reset
them, consult chapter "Troubleshooting".
25
26
Switching off
Switching off for short periods
For brief absences press the
display will show two segments in the central area (fig. 27). When
the boiler remains powered with the gas tap open, it is protected
by the following systems:
- anti-freeze: when the temperature of the water in the boiler
falls below safety values, the circulator and the burner work
at minimum power to increase the water temperature to a safe
value (35 °C). The
symbol lights up on the display (fig. 27).
27
- circulator anti-block: one operating cycle is performed every
24 hours.
Switching off for long periods
For prolonged absences press the
The display will show two segments in the central area (fig. 27).
Turn the main switch to "off".
Turn off the gas tap under the boiler by turning it clockwise (fig. 28).
tap
closed
28
In this case, the anti-freeze and anti-block systems are disa-
bled.
Empty the water circuit or suitably protect it with a good make
of anti-freeze. Drain the domestic hot water circuit.
B
button to switch off the boiler. The
button to switch off the boiler.
Boiler functions
Semi-automatic filling
The boiler features a semi-automatic filling device which turns on
by pressing the
button when the corresponding symbol
shown on the display (fig. 29).
29
If this condition occurs it means that the system is incorrectly pres-
surised though the boiler will continue to work regularly. Press the
will
circuit filling button
Press the circuit filling button
ing sequence. During filling, the drops of the circuit filling symbol
and the growing pressure value appear on the display in a
cascade sequence (fig. 30).
30
After filling, the
symbol is displayed for a few moments and
then turns off.
Note
During filling, the boiler does not perform other functions. For
example, if there is a request for domestic hot water, the boiler is
unable to provide it until filling has finished.
Note
If circuit pressure reaches 0.6 bar, the pressure value flashes on
the display (fig. 31a); if it falls below a minimum safety value (0.3
bar), fault code 41 appears on the display (fig. 31b) for a certain
time, following which, if the fault persists, fault code 40 is displayed
(see chapter on "Troubleshooting").
31a
31b
In the event of fault 40, press
the circuit. After correcting fault 40, the boiler runs an automatic
vent cycle lasting about 2 minutes; the display reads "SF" (fig.
32) and the "function selectors"
the
button to interrupt the automatic venting
have to fill the system several times, contact the Technical Service
Centre to check whether the heating circuit is watertight (see if
there are any leaks).
32
to start-up the filling sequence.
a second time to interrupt the fill-
to reset and then
light up in sequence. Press
ENGLISH
is
to start filling
cycle.
If you
15

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