Ignition And Operation - Beretta Ciao 24 C.A.I. e Manuel D'installation Et D'utilisation

ENGLISH
Do not use gas and/or water pipes to earth electrical appliance.
The manufacturer declines liability for any damage if the appliance
was not connected to an earth circuit.
Use the power cable supplied to connect the boiler to the
mains power supply.
If the power cable is replaced, use a cable type HAR H05V2V2-
F, 3 x 0.75 mm , with max. outside diameter 7 mm.
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3.4 Gas connection
Before connecting the appliance to the gas network, check that:
- national and local regulations are complied
- the gas type is the one suitable for the appliance
- the piping is clean.
The gas pipe must be installed outdoor. If the pipe goes through the
wall, it must go through the central opening, in the lower part of the
template. It is advisable to install a filter of suitable dimensions on
the gas line if the distribution network had solid particles.
Once the appliance has been installed check that connections are
sealed according to current installation regulations.
3.5 Fumes exhaustion and air suction
Observe applicable legislation regarding flue gas exhaustion.
The exhaust system must be made using rigid ducting, the joints
between elements must be hermetically sealed and all components
must be resistant to heat, condensation and mechanical stress and
vibration.
Non insulated outlet pipes are potential sources of danger.
The apertures for the combustion air must be realised in compli-
ance with applicable legislation. If condensation forms, the exhaust
duct must be insulated. Figure 11 shows a top-down view of the
boiler with the dimensions for the flue gas exhaust outlet.
Flue gas safety system
The boiler features a system monitoring that flue gases are cor-
rectly exhausted which arrests the boiler in the event of a fault:
flue gas thermostat, fig. 10. To restore normal operation, turn the
function selector to (2 - fig.1a), wait a few seconds, then turn the
function selector into the desired position.
If the fault persists, call a qualified technical from the Technical
Support Service. The flue gas exhaustion monitoring system must
never be bypassed or rendered inoperable. Use only original re-
placement parts when replacing the whole system or faulty system
components.
3.6 Filling the heating system (fig. 12)
Once the hydraulic connections have been carried out, fill the heat-
ing system. This operation must be carried out with cold system
following this instructions:
- turn by two or three turns the automatic relief valve cap (I)
- make sure the cold water inlet tap is open
- turn on the filling tap (L) until the pressure indicated by the water
pressure gauge is between 1 and 1.5 bar.
Once filling is complete, close the filling tap.
The boiler has an efficient air separator so no manual intervention
is needed. The burner switches on only if the air relief phase is
finished.
3.7 Emptying the heating system (fig. 12)
To empty the system, proceed as follow:
- switch off the boiler
- loose the boiler outlet tap (M)
- empty the lowest points of the system.
3.8 Emptying the domestic hot water
When there is risk of frost, the domestic hot water system must be
emptied in the following way:
- close the main tap of the water mains
- open all the hot and cold water taps
- empty the lowest points.
WARNING
When carrying out the discharge of the safety valve (N), it must be
connected to a suitable collection system. The manufacturer is not
responsible for possible damages due to safety valve operation.
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4 - IGNITION AND OPERATION

4.1 Preliminary checks
First ignition is carried out by competent personnel from an autho-
rised Technical Assistance Service Beretta.
Before starting up the boiler, check:
a) that the supply networks data (electric, water, gas) corresponds
to the label data
b) that piping leaving the boiler is covered by thermal insulation
sheath
c) that flue gas extraction and air suction pipes work correctly
d) that conditions for regular maintenance are guaranteed if the
boiler is placed inside or between furniture
e) the seal of the fuel adduction system
f) that fuel capacity corresponds to values requested by the boiler
g) that the fuel supply system has the correct capacity for the
necessary capacity to the boiler and that it has all the safety
and control devices prescribed by current regulations.
4.2 Appliance ignition
To start-up the boiler it is necessary to carry out the following op-
erations:
- power the boiler
- open the gas tap present in the system to allow fuel flow
- turn the mode selector (2 - fig. 1a) to the desired position:
Summer mode: turning the selector to the symbol summer
(fig. 2a) the traditional function of only domestic hot water is acti-
vated. If there is a domestic hot water request the digital display
shows the hot water system temperature, the icon to indicate the
hot water supply and the flame icon.
Winter mode: by turning the mode selector within the area
marked + and - (fig. 2b), the boiler provides domestic hot water
and heating. If there is a heat request, the boiler switches on
and the digital monitor indicates the heating water temperature,
the icon to indicate heating and the flame icon (fig. 3a). If there
is a domestic hot water request, the boiler switches on and the
digital display shows the hot water system temperature, the icon
to indicate the hot water supply and the flame icon (fig. 4a).
- adjust the room thermostat to the required temperature (~20°C).
Adjustment of domestic hot water temperature
To adjust domestic water temperature (bathrooms, showers, kitch-
en, etc.), turn the knob with symbol
marked + and -.
The boiler is standby status until, after a heat request, the burner
switches on and the digital display shows the hot water system
temperature, the icon to indicate the hot water supply and the flame
icon.
The boiler will be in function until the adjusted temperature is
reached, afterwards it will be in "standby" again.
Environment Automatic
(S.A.R.A.) - fig. 6a
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 temperature according to the closing signal of the room
thermostat. When the temperature set with the heating water tem-
perature selector is reached, a 20 minutes count begins. If during
this period the room 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 room 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
manually with the heating water temperature selector and the in-
crease of +10 °C of the S.A.R.A function.
After the second increasing cycle, the temperature value is re-
stored to the value set by the user and the above mentioned cycle
is repeated until the ambient thermostat request is fulfilled.
4.3 Switching off
Temporary switching off
In case of absence for short periods of time, set the mode selector
(2 - fig. 1a) to (OFF).
In this way (leaving the electricity and fuel supplies enabled), the
boiler is protected by the following systems:
(fig. 2b) within the area
Adjustment System Function