28
GB
red, together with the other set-
ting, by taking the steps explained
from chapter 3 onwards.
15 - TEMPERATURE
THRESHOLD
The temperature threshold can be
set at values between ±0.1 °C and
±0.9 °C. The THERMOPROGRAM
is despatched from the factory
with a default temperature thres-
hold of ±0,2 °C.
This threshold, which establishes
how soon the thermostat reacts to
temperature changes, is intended
for systems with a high thermal
inertia, such as systems with cast-
iron radiators. If the features of the
plant make necessary to change
the value for the temperature
threshold, proceed as follows:
15.1 - Remove the thermostat
from its housing.
15.2 - Press button
to set the
thermostat in MANUAL mode,
figure 72.
15.3 - Press button T, figure 73.
Instead of the actual temperature
value, the display indicates the
temperature threshold setting.
15.4 - Press button
or
until
the required value is displayed,
figure 74.
15.5 - Press button T again, or
wait 10 s, to end the programming
procedure.
15.6 - Replace the thermostat in
its housing.
16 - REPLACING
THE BATTERIES
The indication
on the dis-
play informs that the batteries
must be replaced (fig. 75).
If the message
alternates
with the time, you have about a
T3
T2
T1
0
4
8
12
16
20
1 2
3 4 5 6 7
ON
0 23
R
T
C
1 7
Fig. 72
Fig. 73
0 23
R
T
C
1 7
Fig. 71
TH345.01 ITF 24078822 04_06 11-07-2007 8:21 Pagina 28
