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4 - SWITCHING ON AND OPERATION
4.1 Switching on the appliance
Every time the appliance is powered up, a series of data is shown on the
display including the flue gas sensor meter reading (-C- XX) (see para-
graph 4.3 - fault A09); the automatic purge cycle then starts, lasting around
2 minutes. During this phase, the three LEDs light up alternately and the
symbol "
" is shown on the monitor (fig. 25).
To interrupt the automatic purge cycle proceed as follows:
access the electronic board by removing the housing, turning the instru-
ment panel towards you and opening the board casing (fig. 16)
Then:
- press the CO button (fig. 26).
Live electrical parts (230 V AC).
To start up the boiler it is necessary to carry out the following operations:
- power the boiler
- open the gas tap to allow the flow of fuel
- set the room thermostat to the required temperature (~20°C)
- turn the mode selector to the desired position:
Winter mode: by turning the mode selector (fig. 27) in the area divided into
segments, the boiler provides domestic hot water and heating. If there is
a heat request, the boiler switches on and the boiler status indicator LED
lights up with a fixed green light. The digital monitor indicates the heating
water temperature (fig. 29).
If there is a domestic hot water request, the boiler switches on and the
boiler status indicator LED lights up with a fixed green light.
The display indicates the delivery temperature (fig. 30).
Adjustment of the heating water temperature
To adjust the heating water temperature, turn the knob with symbol "
(fig. 27) clockwise to the area divided into segments.
Summer mode: turning the selector to the summer mode symbol "
(fig. 28) activates the traditional domestic hot water only function.
If there is a domestic hot water request, the boiler switches on and the
boiler status indicator LED lights up with a fixed green light. The digital
monitor indicates the delivery temperature (fig.30).
Pre-heating (faster hot water): turning the domestic hot water tempera-
ture adjustment knob to the "
function.
Bring the domestic hot water temperature adjustment knob back
to the required position.
This function keeps the water in the domestic hot water exchanger hot, to
reduce standby times when a request is made.
When the pre-heating function is enabled, the yellow LED next to the "
symbol is lit. The monitor indicates the delivery temperature of the heating
water or the domestic hot water, according to the current request. During
burner ignition following a pre-heating request, the monitor indicates the
" " symbol.
To deactivate the pre-heating function, rotate the domestic hot water tem-
perature adjustment knob back to the "
switch off. Bring the domestic hot water temperature adjustment knob back
to the required position.
This function cannot be activated when the boiler is OFF: function selector
(fig.32) to "
" (OFF).
Adjustment of the domestic hot water temperature
To adjust the domestic hot water temperature (bathrooms, shower, kitchen,
etc.), turn the knob with the
numerical values between 1 (min. value 37°C) and 9 (max. value 60°C).
On the control panel, the green LED flashes with ON for 0.5 seconds, OFF
for 3.5 seconds.
The boiler is standby status until, after a heat request, the burner switches
on and the indicator LED turns fixed green to indicate flame presence.
The boiler continues to operate until the temperatures set on the boiler are
reached, or the heat request is met; after which it goes back on standby.
If the red LED indicator near the
lights up, this means the boiler is in temporary shutdown status (see the
chapter on Light signals and faults).
The digital monitor indicates the fault code detected.
Automatic Temperature Control System function (S.A.R.A.) fig. 35
Setting the heating water temperature selector to the area marked "AUTO",
activates the automatic temperature control system (frequency 0.1 sec. on;
then 0.1 sec. off; for 0.5 seconds): according to the temperature set on the
room thermostat and the time taken to reach it, the boiler varies automati-
cally the heating water temperature reducing the operating time, allowing
greater ease of operation and energy saving. On the control panel, the
green LED flashes ON for 0.5 seconds, OFF for 3.5 seconds.
"
symbol (fig. 31)
activates the pre-heating
" symbol. The yellow LED will
symbol (fig. 33) to align with one of the
symbol (fig. 34) on the control panel
Reset function
To restore operation, set the function selector to " " (fig. 32), wait 5-6 sec-
onds then set the function selector to the required position, checking that
the red indicator light is OFF.
At this point the boiler will automatically start and the red lamp switches
on in green.
N.B. If the attempt to reset the appliance does not activate operation, con-
tact the Technical Assistance Service.
4.2 Switching off
Temporary switch-off
In case of absence for short periods of time, set the mode selector (fig.
32) 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
digital monitor.
Circulator anti-blocking function: an operation cycle is activated every
24 hours.
Switching off for long periods
In case of absence for long periods of time, set the mode selector (fig. 32)
to "
" (OFF).
Turn the main system switch OFF.
"
Close the fuel and water taps of the heating and domestic hot water sys-
tem.
"
In this case, anti-frost device is deactivated: drain the systems, in case of
risk of frost.
4.3 Light signals and faults
The control panel has three LEDs that indicate the boiler operating status:
Green LED
Flashing
Flashing (0.5 seconds on, then 3.5 seconds off) = boiler in standby, there
is no flame.
Flashing (0.5 seconds on, then 0.5 seconds off) = temporary shutdown of
the appliance due to the following automatic-reset faults:
"
- water pressure switch (standby time 10 minutes approximately)
- transitory waiting for ignition.
In this phase, the boiler waits for restoration of working conditions. If after
the standby time, the boiler does not restore regular operation, the shut-
down will be permanent and the signal light will be red.
Fast flashing (0.1 second on; then 0.1 second off; for 0.5 seconds) = Auto-
matic Temperature Control System input/output function (fig. 35).
Setting the heating water temperature selector to the area marked "AUTO"
(temperature value from 55 to 65°C) activates the Automatic Temperature
Control System: the boiler varies the output temperature according to the
closing signal of the room thermostat.
When the temperature set with the heating water temperature selector is
reached, a 20-minute countdown begins. If during this period the room
thermostat still requests heat, the value of the set temperature automati-
cally increases by 5°C.
When the new value is reached, other 20-minute countdown begins. If dur-
ing 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 tem-
perature selector and the increase of +10°C of the Automatic Temperature
Control System (S.A.R.A) function.
After the second cycle, the temperature value is not increased any further
(set temperature +10°C) and cycle described above is repeated until the
room thermostat request is met.
Fixed green
there is flame, the boiler works regularly.
Red LED
If the red LED lights up, this indicates the presence of a fault; the monitor
shows a code interpreted as follows:
A 01 flame lockout (fixed red LED + flame lockout icon
A 02 limit thermostat operation (flashing red LED)
A 03 fan fault (fixed red LED)
A 04 water pressure switch after transitory phase (fixed green + red LEDs
+ filling icon "
")
A 06 domestic hot water NTC sensor (flashing red+green LEDs)
A07 delivery/return differential or heating NTC sensor (fixed red LED)
A08 delivery/return differential or return NTC sensor (fixed red LED)
ENGLISH
(fig. 36) appears on the
)
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