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TECHNICAL MANUAL FOR INSTALLATION, USE AND MAINTENANCE
4 USE, OPERATION AND
MAINTENANCE
Before using the boiler, an authorised Service Centre shall
carry out the first start-up operations. A correct start-up
procedure is a pre-requisite for a long working life of the
boiler.
You can carry out the operations described below, which
should be executed as timely as possible and whenever
needed, for perfect and complete performance. These
operations can be carried out after the first start-up
procedure.
Proper operation depends on the activities carried out on:
1) FILLING TAP (see 4.1 and 4.2);
2) CONTROL PANEL (see 4.2);
3) ROOM THERMOSTAT (SEE 4.3).
Specific information for the X E Model.
When the fume draught is not sufficient, the boiler stops
and generates an error signal on the display (E5) which
lasts for at least 10 minutes. The boiler starts up again
automatically but it stops again if the draught problem still
exists.
NOTE
. In case of multiple stops caused by draught
problems, de-energise the system, close the boiler gas valve,
call the Service Centre and do not make any re-start
attempts. There may be some boiler malfunctioning or the
malfunctioning may be due to external conditions (e.g.
clogged chimney or air inlets) which may pose some safety
risks.
4.1 SYSTEM FILLING.
The system filling tap is located in the lower part of the
equipment, between the pipes on the right-hand side, near
the wall (no.14 Fig.12).
On the pressure gauge (water gauge, no.3, Fig. 12), check
that the heating system pressure ranges from 0.8 to 1.2
bar (the equipment does not work below 0.5 bar). If the
pressure value is low, open the filling tap (no.14 Fig.12)
when the BOILER IS COLD (T= 20°C), until the pressure
value reaches 1 bar. Close the tap when the operation is
complete.
4.2 BOILER USE
TO SWITCH ON THE BOILER
- Make sure that the on/off valves on the fuel gas line are
all open.
- Switch on the boiler by pressing its external main switch.
- Press the boiler ON/OFF button once. The display shows
“On” for 5".
- Press the boiler SUMMER/WINTER button once. The
display shows “o”, or “oo”, for 5":
“o” to start hot water production, press again until “o”
(summer) is displayed and only the right-hand warning light
is on;
“oo” to start sanitary hot water production AND the
heating system, press the button again until “oo” (winter)
is displayed and both warning lights go on.
- Follow the procedure below to make sure that the hot
water production and heating system meet your needs.
- If the burner does not come on and blocks (error signal
E2), solve the possible problems (gas tap closed, no gas…)
and press the RESET button (2). Switch the boiler off and
call the Service Centre if the boiler blocks repeatedly.
TO SWITCH OFF THE BOILER
- For a short stop, press the boiler ON/OFF button once; the
display and the warning lights go off. The main boiler
functions are disabled.
- For a long-term stop, press the ON/OFF button and the
main switch, located out of the boiler; close the fuel gas
tap which supplies gas to the boiler.
TO KNOW ABOUT THE BOILER OPERATION
Look at the control panel warning lights:
-The Heating leds (n° 5) and the sanitary leds (n° 9) can
be:
- off; in this case the relevant functions are not
operating
- on; the relevant functions are operating
- flashing: the burner is operating and the boiler is
working in order to satisfy the active function that
induced the request.
Please observe the display of the instrument board.
It can show:
- a number; it indicates the temperature of the water
delivered to the heating equipment. This is displayed
when the heating is on (SUMMER/WINTER button
(3) set on winter, heating led (5) is on, the contacts
of the room thermostat (when present) are closed
(heating is requested).
- Two spinning hyphens: the boiler is working with a
request of hot sanitary water (led 9 flashing or fixed)
- Two horizontal hyphens: there is neither request of
heating (SUMMER/WINTER button (3) set on winter
or contacts of thermostat open) nor of hot sanitary
water.
- A flashing message, indicating a malfunction (see
the paragraph “MALFUNCTION SIGNALLING” in
the manual)
TO ADJUST THE SANITARY HOT WATER TEMPERATURE
Plus and Minus buttons (+/-) of the control panel (8, 10).
They change the water temperature value Ts, within the
30-60°C range. Press the “+/-” button once: the set Ts
value is displayed. The value is displayed for 5": during
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