DEVI DEVIreg Opti Installation Manual page 4

Sensing units (floor sensor)
Sensing values:
0°C
20°C
50°C
Control
Cable specification max.
Ambient temperature
Frost protection temperature
Temperature range
Sensor failure monitoring
Ball pressure test temperature 75°C
Pollution degree
4
NTC 15 kOhm at 25°C (Default)
42 kOhm
18 kOhm
6 kOhm
PWM (Pulse Width Modulation)
1x4 mm and 2x2,5 mm
2
0° to +35°C
5°C to +9°C (default 5°C)
Room temperature: 5-35°C.
Floor temperature: 5-45°C.
Max. floor: 20-35°C (if unrecover-
able seal is broken then up to 45°C).
Min. floor: 10-34,5°C, only with
combination of room and floor
sensor.
The thermostat has a built-in
monitoring circuit, which
will switch off the heating if
the floor sensor is disconnected
or short-circuited
2 (domestic use)
DEVIreg™ Opti
2
Installation Guide