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285
EN
cod. 3542A221 - Rev 00 - 10/2022
ALHENA TECH K 50
Sliding Temperature
When the external probe (optional) is installed, the boiler adjustment system works with "Sliding
Temperature". In this mode, the heating system temperature is regulated according to weather
conditions, to ensure high comfort and energy efficiency throughout the year. In particular, as the
outside temperature increases the system flow temperature decreases according to a specific
"compensation curve".
With
"Sliding Temperature"
, the temperature set using the heating buttons (details 3 and 4 -
fig. 1) becomes the maximum system flow temperature. It is advisable to set a maximum value to
allow system adjustment throughout its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. However, the user
can make any further adjustments necessary to optimize comfort levels.
Compensation curve and curve offset
From the main screen, press the button
to access the
navigation menu [MENU]
. Using the
buttons
and
heating
select the
installer menu [SERVICE]
and confirm with the button
.
Enter the password (see *** 'Installer menu [SERVICE]' on page 281 ***) and press the button
.
Using the buttons
and
heating
select the menu
Climatic curves setting [OTC]
and con-
firm by pressing the button
.
Curve:
select this item and use the buttons
and
DHW
to adjust the de-
sired curve from 1 to 10.
By adjusting the curve to 0, the slid-
ing temperature adjustment is disa-
bled (see fig. 24).
Offset:
Access this sub-menu to access par-
allel offset of the curves using the
buttons
and
DHW
. Refer to
fig. 25 for the characteristics.
OFF:
This item gives access to the "exter-
nal temperature shutdown” value.
Use the buttons
and
DHW
to
modify the value (from 0 to 40°C), if
set to 0 the function is disabled. Igni-
tion occurs when the temperature of
the external probe is more than 2°C
lower than the set temperature.
fig. 23
To exit the
Climatic curves setting [OTC]
menu, press the button
repeatedly until reaching
the main screen.
OTC
Curve
Offset
OFF
Содержание 0T4T4AWD
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