37
68
67
66
On the display, in place of the temperature, there will appear
the value of the set thermal differential
.
17.5-
Press the button (forward) or (back) (fig. 68) to
modify this value as desired.
Setting the differential to 0 °C provides compliance
with a minimum start-up/shutdown time of one
minute, regardless of the measured room tempera-
ture.
17.6-
Press button
P
to exit programming.
18
-
PROPORTIONAL
-
INTEGRAL
PROGRAMMING
This type of adjustment lets the programmable thermo-
stat reduce boiler running cycles as the room tempera-
ture approaches the set temperature, thus substantially
reducing consumption while maintaining excellent com-
fort.
It is possible to select from among three preset pro-
grammes depending on the type of system to control
(P1, P2 e P3), or you can choose programme P4, which is
completely manual (tab. 1 on page 38).
Integral proportional adjustment has the advantage
of letting you manage a wider variety of systems with
respect to the setting of the thermal differential, and it
is especially suitable for floor and radiant systems (pro-
gramme P3).
The difference between the set temperature and the
ambient temperature is just a few tenths of a degree. This
ensures more precise adjustment.
PI
TH350 EN 05_08.indd 37
TH350 EN 05_08.indd 37
30-05-2008 8:20:55
30-05-2008 8:20:55
