G
B
The chronothermostat works in ON-OFF differential mode (Dip
3 OFF) with the default differential setting of .0,3°C
The differential can be changed by moving the microswitches
(dip-switches) as shown in the table.
13 - TEMPERATURE DIFFERENTIAL
Time
°C
OffOn On
Dip 1 Dip 2 Dip 3
Differential
ON ON OFF
0,9 °C
ON OFF OFF
0,7 °C
OFF ON OFF
0,5 °C
OFF OFF OFF
0,3 °C
ON
32
OFF
1
ON
Measured temperature
The differential must be set according to the system's thermal
inertia; a low setting is recommended for systems with radiators
(e.g. made of cast iron) and a high setting for systems with fan-
coils.
ON
32
OFF
1
ON
As an alternative to the differential, it is possible to adjust the
temperature proportionally (Dip 3 ON); this system enables
saving on energy consumption and also on the wear of the burner
by limiting the number of ignitions. The duration of each ignition
depends not only on the set cycle but also on the difference
between the set temperature and the measured temperature (see
example).
14 - PROPORTIONAL OPERATION
Example of setting t = 20 °C - Cycle = 10 min
t = 20,5 °C Consumer always OFF
t = 20,4 °C Consumer 1 min ON - 9 min OFF
t = 20,3 °C Consumer 2 min ON - 8 min OFF
t = 20,2 °C Consumer 3 min ON - 7 min OFF
t = 20,1 °C Consumer 4 min ON - 6 min OFF
t = 20,0 °C Consumer 5 min ON - 5 min OFF
t = 19,9 °C Consumer 6 min ON - 4 min OFF
t = 19,8 °C Consumer 7 min ON - 3 min OFF
t = 19,7 °C Consumer 8 min ON - 2 min OFF
t = 19,6 °C Consumer 9 min ON - 1 min OFF
t = 19,5 °C Consumer always ON
Dip 1 Dip 2 Dip 3
Duration Cycle
ON ON ON
20 min
ON OFF ON
15 min
OFF ON ON
10 min
OFF OFF ON
7 min
ON
32
OFF
1
ON
The duration of the cycle is determined by the position of the
microswitches (dip-switches) on the back of the chrono-
thermostat, as shown in the table. A long cycle is recommended
for systems with high thermal inertia (cast-iron radiators) and a
short cycle for systems with low thermal inertia (fan-coils).
20,8
20,6
20,4
20,2
20,0
19,8
19,6
19,4
19,2
°C
01024 6 8 Minutes
21
The settings of the microswitches (dip-switches)
on the back of the chronothermostat must be made
by qualified personnel.
Adjustable differential
0,3 °C - 0,5 °C - 0,7 °C - 0,9 °C
Consumer
OFF
Consumer
ON
4
4
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