Perry DECRNN034 Instrucciones Para El Usuario página 23

The settings of the microswitches (dip-switches)
on the back of the chronothermostat must be made
by qualified personnel.
13 - TEMPERATURE DIFFERENTIAL
The chronothermostat works in ON-OFF differential mode (Dip
3 OFF) with the default differential setting of
The differential can be changed by moving the microswitches
(dip-switches) as shown in the table.
ON ON
ON ON
Dip 1
OFF
OFF
1 1 2 2 3 3 4 OFF OFF
ON
ON
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.
°C
On Off
0,3°C (0,54 °F) .
Dip 2 Dip 3 Differential
OFF OFF 0,3 °C (0,54 °F)
ON OFF 0,5 °C (0,9 °F)
OFF OFF 0,7 °C (1,26 °F)
ON OFF 0,9 °C (1,62 °F)
Adjustable differential
0,3 °C - 0,5 °C - 0,7 °C - 0,9 °C
(0,54 °F - 0,9 °F - 1,26 °F - 1.62 °F)
On
Time
14 - PROPORTIONAL OPERATION
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).
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
The duration of the cycle is determined by the position of the
microswitches (dip-switches) on the back of the chronothermostat,
as shown in the table. A long cycle is recommended for systems
with high thermal inertia (cast-iron radiators, floor systems) and a
short cycle for systems with low thermal inertia (fan-coils).
ON
ON
Dip 1
OFF
OFF
1 2 3 4 OFF
ON
ON
°C
Consumer
20,8
OFF
20,6
20,4
20,2
20,0
19,8
19,6 Consumer
ON
19,4
19,2
0 2 4 6 8 10 Minutes
Dip 2 Dip 3 Duration Cycle
OFF ON
7 min
ON ON
10 min
OFF ON 15 min
ON ON
20 min
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