Beretta CIAO e 24 C.S.I. Manual De Instalacion Y Uso página 7

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4.3 Switching off
Temporary switching off
In case of absence for short periods of time, set the mode selector
(3 - fi g. 1a) to
(OFF).
In this way (leaving the electricity and fuel supplies enabled), the
boiler is protected by the following systems:
- Anti-frost device: when the temperature of the water in the boiler
falls below 5°C, the circulator and, if necessary, the burner are
activated at minimum output levels to bring the water tempera-
ture back to the values for safety (35°C). During the anti-frost
cycle, the symbol
appears on the digital monitor.
- Circulator anti-blocking function: an operation cycle is activated
every 24 hours.
Long period switching off
In case of absence for long periods of time, set the mode selector
(3 - fi g. 1a) to
(OFF).
Then, close the gas tap present on the system. In this case, anti-frost
device is deactivated: empty the systems, in case of risk of frost.
4.4 Light signals and faults
The operating status of the boiler is shown on the digital display,
below is a list of the types of displays.
To restore operation (deactivate alarms):
BOILER STATUS
Stand-by
OFF status
ACF module lockout alarm
ACF electrical fault alarm
Limit thermostat alarm
Air pressure switch alarm (C.S.I. models)
Fumes thermostat (C.A.I. models)
H2O pressure switch alarm
NTC domestic water fault
NTC heating fault
Parasite fl ame
Electric calibration min and max heating
Transient awaiting ignition
Air pressure switch intervention (C.S.I. models)
Fumes thermostat intervention (C.A.I. models)
H2O pressure switch intervention
External probe present
Domestic water heat request
Heating heat request
Anti-freeze heat request
Flame present
Faults A 01-02-03
Position the function selector to
set it to the required position
mode). If the reset attempts do not reactivate the boiler, contact the
Technical Assistance Centre.
Fault A 04
In addition to the fault code, the digital display shows the symbol
Check the pressure value indicated by the water gauge:
if it is less than 0.3 bar, position the function selector to
and adjust the fi lling tap (L fi g. 13) until the pressure reaches a
value between 1 and 1.5 bar.
Then position the mode selector to the desired position
mer) or
(winter).
If pressure drops are frequent, request the intervention of the Tech-
nical Assistance Service.
Fault A 06
The boiler operates normally but cannot reliably maintain a con-
stant domestic hot water temperature, which remains set at around
DISPLAY
-
OFF
A01
A01
A02
A03
A04
A06
A07
A11
ADJ
88
°C
fl ashing
fl ashing
fl ashing
60
°C
80
°C
(OFF), wait 5-6 seconds then
(summer mode) or
(winter
(OFF)
50°C. Contact the Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.
4.5 Adjustments
The boiler has already been adjusted by the manufacturer.
If it is necessary to adjust it again, for example after extraordinary
maintenance, after replacement of gas valve or after gas conver-
sion, carry out the following procedure.
The maximum output adjustment must be carried out in the
sequence indicated exclusively by qualifi ed personnel.
- remove the shell unscrewing the fi xing screws A (fi g. 6)
- unscrew by two turns the screw of the pressure test point down-
stream the gas valve and connecting the pressure gauge
- disconnect the compensation inlet of the air distribution box
(only C.S.I. model)
4.5.1 Maximum power and minimum domestic hot wa-
ter adjustment
- Fully open the hot water tap
- on the control panel:
- set the mode selector to
- turn the domestic hot water temperature selector to its maximum
(fi g. 7a)
- power the boiler setting the system main switch to "on"
- check that the pressure on the pressure gauge is stable; or with
a milliammeter in series to the modulator, make sure that the
modulator supplies the maximum available current (120 mA for
G20 and 165 mA for LPG).
- carefully prise out the protection cap of the adjustment screws,
using a screwdriver (fi g. 15)
- with a fork spanner CH10 use the adjustment nut of the maxi-
mum output in order to obtain the value indicated in table "Tech-
nical data"
- disconnect the modulator faston
- wait until the pressure on the pressure gauge is stable at mini-
mum value
- paying attention not to press the internal shaft, use an Allen
spanner to turn the red adjustment screw for domestic hot water
minimum temperature regulation, calibrating it until the pressure
gauge reads the value indicated in the table "Technical data"
- reconnect the modulator faston
- close the domestic hot water tap
- carefully refi t the protection cap of the adjustment screws.
4.5.2 Minimum and maximum heating electric adjust-
ment
The "electric adjustment" function is activated and deacti-
vated exclusively by the jumper (JP1) (fi g. 16).
ADJ
appears on the display to indicate that the calibration pro-
cedure is underway.
The function can be enabled in the following way:
- by powering the card with the jumper JP1 inserted and the mode
selector in winter position, independently from the possible pres-
ence of other operation request.
- by inserting the jumper JP1, with the mode selector in winter
position, without heat request in progress.
By activating the function the burner is ignited through simu-
lation of heat request in heating.
To perform calibration operations, proceed as follow:
- switch off the boiler
- remove the shell and access the card
.
- insert the jumper JP1 (fi g. 16) to enable the knobs placed on the
control panel to the minimum and maximum heating adjustment
functions.
- make sure that the mode selector is in winter position (see sec-
tion 4.2).
(sum-
- power the boiler
Electric card in voltage (230 Volt)
- turn the heating water temperature adjustment knob B (fi g. 17)
until it reaches the minimum heating value as indicated in the
multigas table
(summer) (fi g. 2a)
CIAO e
7

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