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displayed, wait for the number programmed
to flash (Fig. 7.14).
Fig. 7.14
• To exit programming, press button .
7.11 Setting the K coefficient of the
external temperature probe
The boiler is set with a K coefficient equal to
zero for boiler functioning without the probe
connected.
If the boiler is NOT EQUIPPED with the re-
mote control (optional) refer to Fig. 7.15.
C.h. flow temperature °C
K=6
K=4 K=3
80
70
60
50
40
30
20
20
15
10
5
0
External temperature °C
Fig. 7.15
If the boiler is EQUIPED with the remote con-
trol (optional) refer to Fig. 7.16.
In this case K setting must be done from the
remote control.
COMMISSIONING
K=2
K=1,5
K=1
K=0,5
-5
-10
-15
-20
-25
C.h. flow temperature °C
K=6
K=4
K=3
80
70
60
50
40
30
20
20
15
10
5
0
External temperature °C
Fig. 7.16
The K coefficients is a parameter that increas-
es or reduces the boiler flow temperature
when the outside temperature changes.
When installing the external probe it is neces-
sary to set this parameter based on the effi-
ciency of the heating plant in order to optimise
the flow temperature (Fig. 7.16).
E.g. In order to have a flow temperature at the
heating plant of 60°C with an external tem-
perature of -5°C, set a K at 1.5 (sectioned line
in Fig. 7.16).
Sequence for setting the K coefficient
• Enter in "programming mode" by pressing
keys 14 - 17 - 18 (Fig. 7.17) for 10 seconds
at the same time until the letters P01 are
displayed on the LCD display, indicating
that "parameter 01, has been activated (Fig.
7.18).
K=2
K=1,5
K=1
K=0,5
-5
-10
-15
-20
-25
- 67 -
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