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4.11 Outside temperature compensation
When the (optional) external probe is installed, the boiler regulation system functions in "Outside
temperature compensation" mode. In this mode, the temperature of the heating system is regulated
according to the external climatic conditions, so as to guarantee a high degree of comfort and energy saving
all year round. Specifically, when the external temperature falls, the central heating outlet temperature is
increased, according to a pre-determined "compensation curve".
In this mode, the temperature set in parameter 1 of the operating menu becomes the maximum central heatin
g outlet temperature. This should be set to Maximum to allow the system to regulate over the entire working
range.
The boiler must be set during installation by qualified personnel. Other minor modifications can be made by
the user to improve the level of comfort: the compensation curve can in fact be modified by accessing the
operating menu with the button
The set compensation curve is displayed (refer to graph below). Pressing one of the buttons
starts to flash; use the buttons
. To cancel the setting, do not press the
If the ambient temperature is lower than the required value, it is suggested to set a higher curve, and vice-
versa. Proceed with single unit increments or decreases, and check the results in the room.
Compensation curve
90
80
70
60
50
40
30
20
4.12 Maintenance
It is strongly recommended to effect the annual maintenance of the heating system and at least biennial
checks of the combustion device. Please refer to the "maintenance" section in this manual.
The casing, the control panel and the aesthetic parts of the boiler can be cleaned using a soft and damp cloth.
Do not use abrasives or solvents.
4.13 Anomalies
In the event of operating anomalies or problems, the display flashes and shows the code identifying the
anomaly.
The anomalies marked by the letter "F" cause temporary shut-down, and are reset automatically as soon as
the value returns within the boiler's normal operating range.
The anomalies marked by the letter "A" cause a shut-down of the boiler which can be reset by the user. To
reset operation, press the
If the problem persists, or for any other anomalies, please refer to the "troubleshooting" chapter in this
manual for more details.
42
and scrolling the menu, again using the button, to parameter 9.
to set the required value. To activate the new curve, press the button
20
10
(reset) button.
button, and press the button
10
9
0
Temperatura esterna °C
ARENA 30 A
.
7
8
6
5
4
3
2
1
-10
-20
the display
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