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. 1)
- power the boiler.
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.
After being powered, the boiler begins an automatic vent cycle lasting
approximately 2 minutes. the display indicates "SF" and the "function selection
indicators"
light up in sequence. Press
automatic vent cycle.
The display will look like Fig. 2.
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.
b
The boiler turns on in the status it was in before it was switched
off: if the boiler was in the winter mode when it was switched off, it
will turn on again in the winter mode. If it was in the OFF mode, the
display will show two segments in the central area (Fig. 3).
Press the
button to enable operation.
Choose the desired operating mode by pressing
the
symbol moves to:
WINTER
SUMMER
WINTER function (Fig. 4)
With the selector in this position, the boiler provides hot water for the
heating and, if an external water tank is connected, provides water to
the water tank to allow domestic hot water preparation. Function S.A.R.A
is enabled in this position.
SUMMER function (only with external water tank connected, Fig. 5)
With the selector in this position, the boiler provides water to the water
tank with a temperature stabiliser to allow domestic hot water preparation.
Adjusting heating water temperature
Turning the selector A (Fig. 6), after having positioned the selector mode
on winter
, it is possible to regulate the heating water temperature.
Turn clockwise to increase the temperature and anticlockwise to
decrease. The bar segments light up (every 5°C) as the temperature is
increased. The selected temperature value appears on the display. The
selected temperature value appears on the display.
If you enter the S.A.R.A. adjustment (from 55 to 65°C) while selecting
the heating water temperature, the symbol
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. 7).
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 decrease. The bar
segments light up (at every comfort level), correction tolerance lies
between - 5 and + 5 comfort levels (Fig. 7). When choosing the level of
comfort, the digit area of the display shows the required level of comfort
while the bar shows the matching segment (Fig. 8).
Adjusting domestic hot water temperature
CASE A - only heating - adjusting not applicable
CASE B - only heating + water tank with thermostat: in this condition
every time there is a request from the water tank thermostat, the boiler
supplies hot water to preparing domestic hot water. During this operation
on the display the icon
flashed.
CASE C - only heating + water tank with sensor: to adjust domestic hot
water temperature storaged in the water tank, turn switch D (Fig. 9):
clocwise to increase and anticlockwise to decrease. The bar segments
light up (every 3°C) as the temperature is increased. About 4 seconds
after the selection has been made, the modification is memorised and
the display returns to the delivery temperature read by the sensor.
Working the boiler
Adjust the room thermostat to the required temperature (approx. 20°C).
If there is a demand for heating water, the boiler starts and the
is shown on the display (Fig. 10). The boiler will remain working until the
set temperatures are reached, after which it will go on stand-by. In the
event of ignition or operating faults, the boiler will perform a "safety stop".
The flame symbol
displayed (Fig. 11). For a description of faults and how to reset them,
consult chapter "Troubleshooting".
Switching off
button to interrupt the
Switching off for short periods
For brief absences press the
display will show two segments in the central area (Fig. 3). When the
boiler remains powered with the gas tap open, it is protected by the
following systems:
- anti-freeze (Fig. 12): when the temperature of the water in the boiler
- circulator anti-block: one operating cycle is performed every 24
button, until
Switching off for long periods
For prolonged absences press the
(Fig. 3). The display will show two segments in the central area. Turn
the main switch to "off".
Turn off the gas tap under the boiler by turning it clockwise (Fig. 13).
b
Boiler functions
Filling the circuit
If circuit pressure reaches 0.6 bar, the pressure value flashes on the
display (Fig. 14); if it falls below a minimum safety value (0.3 bar), fault
code 41 appears on the display (Fig. 15) for a certain time, following
which, if the fault persists, fault code 40 is displayed (see chapter on
"Troubleshooting").
In the event of faul 40 (Fig. 16) proceed as follow to restore the correct
pressure value:
- press
- open the filling tap external to the boiler, until the pressure shown in
and the graduated scale
If you have to fill the system several times, contact the Technical Service
Centre to check whether the heating circuit is watertight (see if there
are any leaks).
Information
Press , the display turns off and just the word InFO appears (Fig. 17).
Press the button to view operating information. Press the button again
to move on to the next piece of information. If the button is not pressed,
the system automatically exits the function.
Info list:
Info 0 - shows the word InFO (Fig. 17)
Info 1 - only with the external probe connected, displays external
temperature (e.g. 12°C) (Fig. 18). The values shown on the display range
between - 30°C and 35°C. Beyond these values the display shows "- -"
Info 2 - shows circuit pressure (Fig. 19)
Info 3 - shows the set heating temperature (Fig. 20)
Info 4 - shows the domestic water temperature setted (only water tank
with sensor, Fig. 21)
Info 5 - displays the set heating temperature, in reference to the second
circuit, only if it is connected.
S.A.R.A. function (Fig. 22)
If the "winter" mode is selected, the S.A.R.A. function is activated for
the heating circuit. This function allows to reach the required ambient
temperature more quickly.
Depending on the temperature set on the room thermostat and the
time taken to reach it, the boiler automatically adjusts the heating water
temperature to reduce operating times, thereby increasing operating
comfort and energy saving.
will go out and the fault code and
falls below safety values, the circulator and the burner work at minimum
power to increase the water temperature to a safe value (35°C). The
symbol lights up on the display.
hours.
In this case, the anti-freeze and anti-block systems are disabled.
Empty the water circuit or suitably protect it with a good make of
anti-freeze.
button
the display is between 1 and 1,5 bar.
ENGLISH
button to switch off the boiler. The
button to switch off the boiler
symbol
will be
21