
TEST mode activation
Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the
TEST
mode. The boiler lights at the maximum heating power set as described in the fol-
lowing section.
The heating and DHW symbols (fig. 24) flash on the display; the heating power will ap-
pear alongside.
fig. 24 - TEST mode (heating power = 100%)
Press the heating buttons (details 3 and 4 - fig. 1) to increase or decrease the power
(Min.=0%, Max.=100%).
By pressing the DHW
“-”
button (detail 1 - fig. 1), boiler output is immediately adjusted
to min. (0%). By pressing the DHW
“+”
button (detail 2 - fig. 1), boiler output is immedi-
ately adjusted to max. (100%).
If the TEST mode is activated and enough hot water is drawn to activate the DHW mode,
the boiler remains in TEST mode but the 3-way valve goes to DHW.
To deactivate the TEST mode, press the heating buttons (details 3 and 4 - fig. 1) together
for 5 seconds.
The TEST mode is automatically deactivated in any case after 15 minutes or on stopping
of hot water drawing (if enough hot water has been drawn to activate the DHW mode).
Heating power adjustment
To adjust the heating power, switch the boiler to TEST mode (see sec. 4.1). Press the
heating buttons fig. 1 (details 3 and 4 - ) to increase or decrease the power (min. = 00 -
max. = 100). Press the RESET button within 5 seconds and the max. power will remain
that just set. Exit TEST mode (see sec. 4.1).
4.2 Startup
Before lighting the boiler
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has been vented.
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the boiler
Checks during operation
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duction.
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rning it on and off several times with the room
thermostat or remote control.
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technical data table on cap. 5.
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during heating operation and there is a regular production of hot water.
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sation (compensation curve, power, temperatures, etc.).
4.3 Maintenance
Opening the front panel
To open the boiler casing pull the panel outwards and release it (see fig. 25).
B
Before carrying out any operation inside the boiler, disconnect the power
and close the gas cock upstream
.
fig. 25 - Front panel opening
Periodical check
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tion correctly
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do not use chemical products or wire brushes
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it to that value
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53
EN
cod. 3541H223 - Rev. 00 - 11/2018