Switching Off - Beretta CIAO S 20 C.S.I. Manual De Instalacion Y Uso

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the temperature of the domestic hot water in the storage tank, turn the
knob-but with the symbol clockwise to increase water temperature
and anti-clockwise to lower it.
The boiler is standby status until, after a heat request, the burner
switches on and the digital display shows the hot water system tem-
perature, the icon to indicate the hot water supply and the fl ame icon
The boiler will be in function until the adjusted temperature is
reached, afterwards it will be in "standby" again.
If the red indicator light near the
lights up, this means the boiler is in temporary stop status (see the
chapter about light signals and faults). The digital monitor indicates
the fault code detected (fi g. 6a)
Ciao S C.S.I. - Ciao S R.S.I.: Environment Automatic Adjustment
System Function (S.A.R.A.) fi g. 7a
By setting the heating water temperature selector to the area marked
by AUTO - temperature value from 55 to 65°C - the S.A.R.A. self-
adjusting system is activated: the boiler varies the delivery tempera-
ture according to the closing signal of the ambient thermostat. When
the temperature set with the heating water temperature selector is
reached, a 20 minutes count begins. If during this period the ambi-
ent thermostat still requests heat, the value of the set temperature
automatically increases by 5 °C.
When the new value is reached, other 20 minutes count begins.
If during this period the ambient thermostat still requests heat, the
value of the set temperature automatically increases by 5 °C.
This new temperature value is the result of the temperature set manu-
ally with the heating water temperature selector and the increase of
+10 °C of the S.A.R.A function.
After the second cycle the temperature value should be kept at the
set value +10°C until the request of the ambient thermostat is met.
3A SWITCHING OFF
Temporary switching off
In case of absence for short periods of time, set the mode selector
(1 - 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 temperature
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.
-
DHW Antifreeze (only when connected to an external storage
tank with probe): the function is activated if the temperature
measured by the storage tank probe drops below 5° C. A heat
request is generated in this phase with the ignition of the burner at
minimum power, which is maintained until the water temperature
reaches 55° C. During the anti-frost cycle, the symbol
on the digital monitor.
Long period switching off
In case of absence for long periods of time, set the mode selector
(1 - 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.
4A CONTROLS
At the beginning of the heating season, and occasionally during
use, make sure the hydrometer-thermohydrometer indicates cold
system pressure values between 0.6 and 1.5 bar: this avoids system
noise levels due to the presence of air. In case of insuffi cient water
circulation, the boiler will switch off. Under no circumstances, water
pressure must be below 0.5 bar (red fi eld).
If this condition is checked, it is necessary to restore water pressure
in the boiler proceeding as follows:
- set the mode selector (2 - fi g.1a) to
- turn on the fi lling tap (L fi g. 13 for C.S.I. - external for R.S.I.) until
the pressure value is between 1 and 1.5 bar.
Carefully close the tap.
Replace the mode selector on the initial position.
If pressure drop is frequent, contact the Technical Assistance Service.
symbol on the command panel
appears
(OFF)
5A 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.
BOILER STATUS
Stand-by
OFF status
ACF module lockout alarm
ACF electrical fault alarm
Limit thermostat alarm
Air pressure switch alarm
H2O pressure switch alarm
NTC domestic hot water fault (C.S.I. and R.S.I
only with external storage heater with probe)
NTC heating fault
Parasite fl ame
Electric calibration min and max heating
Transitory awaiting ignition
Air pressure switch intervention
H2O pressure switch intervention
Preheating Function active (only C.S.I.)
Preheating heat request (only C.S.I.)
External probe present
Domestic water heat request
Heating heat request
Anti-freeze heat request
Flame present
To restore operation (deactivate alarms):
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 Techni-
cal 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 for C.S.I. - external for R.S.I.) until
the pressure reaches a value between 1 and 1.5 bar.
Then position the mode selector to the desired position
mer) or
(winter).
The boiler will perform one purge cycle lasting approximately 2
minutes.
If pressure drops are frequent, request the intervention of the Tech-
nical Assistance Service.
Fault A 06 (only C.S.I.)
The boiler operates normally but cannot reliably maintain a con-
stant domestic hot water temperature, which remains set at around
50°C. Contact the Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.
CIAO S C.S.I. - CIAO S R.S.I.
DISPLAY
-
OFF
A01
A01
A02
A03
A04
A06
A07
A11
ADJ
88
°C
fl ashing
fl ashing
fl ashing
fl ashing
60
°C
80
°C
(OFF), wait 5-6 seconds then
(summer mode) or
(winter
(OFF)
.
(sum-
11

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