Beretta Exclusive 24 C.A.I. Manuel D'installation Et D'utilisation page 11

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Switching on
Switch on the boiler as follows:
- access the gas tap through the slots in the cover located in the
lower part of the boiler
- open the gas tap by turning it anti-clockwise (fig. 15)
- power the boiler.
Fig. 15
When powered, the boiler performs a test sequence and a series
of numbers and letters are shown on the display.
If the test is successful the boiler is ready to work about 4 seconds
after the cycle ends.
The display will look like fig. 16.
If the test is unsuccessful, the boiler will not work and a "0" will
flash on the display.
In this case, contact the Technical Assistance Centre.
Fig. 16
The boiler turns on in the status it was in before it was swi-
tched off: if the boiler was in the winter comfort mode when
it was switched off, it will turn on again in the winter comfort
mode. If it was in the OFF mode, the display will show two
segments in the central area (fig. 17). Press the
enable operation.
Fig. 17
- press the function selector until the indicator moves to the re-
quired function
, depending on the kind of operation chosen.
- WINTER
: with the selector in this position, the heating water
and domestic hot water functions are activated.
In this position the S.A.R.A. function is enabled in the heating
mode (see chapter "Boiler functions"). The boiler actives the
temperature stabiliser in order to ensure the continuous produc-
tion of domestic hot water, even for small demands or when the
inlet water is already hot. This prevents temperature oscillations
due to the burner switching off/on.
- WINTER COMFORT
well as the traditional function of heating water and domestic hot
water, the preheating function is also activated which keeps the
water in the domestic hot water exchanger hot in order to reduce
waiting times. The S.A.R.A. Booster and Domestic hot water
preheating functions are enabled in this position (see chapter
"Boiler functions").
- SUMMER
: with the selector in this position, just the tradi-
tional domestic hot water function is activated.
- SUMMER COMFORT
boiler provides just domestic hot water with a temperature stabi-
liser for small deliveries. Ideal at the times of year or in the areas
where the mains water is already warm. In these conditions, the
temperature of the hot water produced by a boiler with just tradi-
tional functions (see SUMMER and WINTER COMFORT) may
be instable.
open
position
: with the selector in this position, as
: with the selector in this position, the
Adjusting heating water temperature
Turning the selector A (fig. 18), after having positioned the selector
mode on winter
the heating water temperature.
A
Fig. 18
Turn clockwise to increase the temperature and anticlockwise to
decrease. The bar segments light up (every 5°C) as the tempera-
ture is increased. The selected temperature value appears on the
display. If you enter the S.A.R.A. adjustment field (from 55 to 65
°C) while selecting the heating water temperature, the symbol
and the graduated scale start flashing. The selected temperature
value appears on the display.
Adjusting heating water temperature with an external sensor
connected
When an external probe is connected, the value of the delivery
temperature is automatically chosen by the system which rapidly
adjusts ambient temperature to the changes in external temperature.
Just the central segment of the bar is illuminated (fig. 19).
To increase or decrease the temperature with respect to the value
automatically calculated by the electronic board, turn the heating
water selector clockwise to increase and anticlockwise to decrea-
se. The bar segments light up (at every comfort level), correction
tolerance lies between - 5 and + 5 comfort levels (fig. 19). When
choosing the level of comfort, the digit area of the display shows
the required level of comfort while the bar shows the matching
button to
segment (fig. 20).
°C
+ 4/5
+ 3
+ 2
+ 1
0
- 1
- 2
- 3
- 4/5
Fig. 19
Fig. 20
Adjusting domestic hot water temperature
To adjust domestic hot water temperature, turn switch B (fig. 21)
clockwise to increase and anticlockwise to decrease. The bar seg-
ments light up (every 3°C) as the temperature is increased.
The selected temperature value appears on the display.
Fig. 21
When choosing the temperature, both for heating and domestic
hot water, the display shows the value being selected. About 4
seconds after the selection has been made, the modification is
memorised and the display returns to the delivery temperature
read by the probe.
11
or winter comfort
, it is possible to regulate
Exclusive C.A.I.
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