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926.772.1 - GB/IEINSTRUCTIONS PERTAINING TO THE USER
a) Automatic operation. Operation of the boiler is controlled by the timed program as described in point
3-5.1 “Daily timed program for operation of the central heating system”;
b) Manual operation at the maximum temperature set. The boiler comes into operation regardless of
the timed program set. The operating temperature is that set using the key (point 3-3: “Setting
the maximum central heating temperature”);
c) Manual operation at minimum temperature. The operating temperature is that set in point 3-6:
“setting the minimum central heating temperature”.
The manual transition from positions a) and b) to position c) involves shut-down of the burner and
disconnection of the pump after the post-circulation delay interval (the factory setting for this parameter
is 3 minutes).
d) standby. The boiler does not work in central heating mode, although the frost protection function is
still enabled.
(1) Hot water on/off key: Press this key to activate or inhibit this function, which is identied by the
appearance on the display of two black dashes under the symbol.
(4) Reset key. In case of a fault, referred to in point 3-7 “Faults and resetting the boiler”, the boiler
can be restarted by pressing this key for at least two seconds.
If this key is pressed with no fault present, the display will show the message “E153”, and the same
key has to be pressed again (for at least two seconds) to restart the boiler.
(9) Data key. This key can be pressed repeatedly to display the following information:
- Temperature (°C) of the hot water ( );
- outdoor temperature (°C) ( ); only provided with the outdoor temperature sensor probe
connected.
Press either of the keys to return to the main menu.
020503_0800
Figure 2
Dash
“Automatic mode”
active
(2) This key can be pressed to set the central heating water output temperature as described in point
3-3.
(3) This key can be pressed to set the hot water temperature as described in point 3-4.
(10) Central heating mode operating key
The key can be pressed to activate four boiler central heating operating modes; these modes are
identied by a black cursor line underneath the relative symbol on the display, and are as follows:
3.1 DESCRIPTION OF KEYS