Ignition And Operation; Preliminary Checks - Beretta Ciao 24 C.A.I. e Manuel D'utilisation

ENGLISH
C12-C12x Discharge via concentric wall outlet. The pipes may leave the
boiler independently, but the outlets must be concentric or sufficiently
close together to be subjected to similar wind conditions (within 50 cm)
C22 Discharge via concentric outlet in common smoke pipe (suction and
discharge in the same pipe)
C32-C32x Discharge via concentric roof outlet. Outlets as for C13
C42-C42x Discharge and suction in common separate smoke pipes, but
subjected to similar wind conditions
C52-C52x Separate discharge and suction lines on wall or roof and in ar-
eas with different pressures. The discharge and suction lines must never
be positioned on opposite
walls
C62-C62x Discharge and
suction lines using pipes
marketed and certified sep-
arately (1856/1)
C82-C82x Discharge via sin-
gle or common smoke pipe
and wall suction line
C92-C92x Discharge on
roof (similar to C33) and air
suction from a single exist-
ing smoke pipe
3.5 Fumes exhaustion and air suction (CIAO C.A.I. e)
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 12 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. 11b. To restore normal operation, turn the
function selector to (3 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. 13)
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 fig. 13) 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
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.
6
C52 C32 C32 C92
C42
C82 C22 C22 C42
C12 C52 C12
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.

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 nec-
essary 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 (3 - fig. 1a) to the desired position:
Summer mode: turning the selector to the symbol summer
2a) the traditional function of only domestic hot water is activated. 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 heat-
ing. If there is a heat request, the boiler switches on and the digital
monitor indicates the heating water temperature, the icon to indi-
cate 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 wa-
ter supply and the flame icon (fig. 4a)
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.
(fig. 2b) within the area
Adjustment System Function
(fig.