Green Heating Technology
46
Addendum
Outdoor Sensor Kit
Installation and setting
The Outdoor Sensor manages automatically the CH flow temperature** as a function of the outdoor
temperature, thus avoiding the user to adjust it manually. This function is also named
"shifting tempera-
ture"
�
**
that's
the temperature of the heating elements.
Don't mistake it
with the room temperature (managed by the room thermo-
stat or by the Remote Control, but not by the boiler) that doesn't depend on the first one.
The installation must be made by a professionally skilled technician
following the instructions supplied
with the kit. Refer to "Electrical diagram" on page 44 for the links to the Main Board.
After the installation of the Sensor, the knob
described in the User section (see page 10) won't
adjust directly the CH flow temperature, but the dispersion factor
"kd"
that's the response of the out-
door temperature, detected by the sensor, on the CH flow temperature, as shown in the following graph.
35
40
45
50
55
60
65
70
75
78
MAX
MIN
High temperature range 35÷78 °C
–20
t
ext
(°C)
–15
–10
–5
0
5
10
15
20
25 27
20
25
30
35
40
45
MAX
MIN
Low temperature range 20÷45 °C
(if available)
(kd=00)
kd=05
kd=01
kd=10
kd=15
kd=20
kd=25
kd=30
00177
ENG 00
Practically,
kd
value should be adjusted depending on the estimated efficiency of the building's ther
-
mal insulation. Its range is from 01 to 30:
use
higher values
when there is a
high thermal dispersion
and therefore a
less efficient insulation
(and vice versa).
Because of the wide buildings typologies, it's impossible to give precise indications on kd value
to set�
The correct setting must be determined case by case and will have, as a result, an opti
-
mal comfort in all the climatic conditions
requiring heating, i.e. a prompt reaching of the room
temperature with cold weather and no room overheating during mild periods.
Outdoor Sensor kit and Remote Control
If also the Remote Control Kit is installed, please refer to the relevant instruction handbook for details
about the combined working of Outdoor Sensor and Remote Control itself.
