20
5. Adjust potentiometer (35) according to the extract air
humidity set point, see table below (factory setting Po-
sition A).
The upper target value for extract air humidity can be
adjusted using the potentiometer (35) between 60-
90% (factory setting 80%, Position A).
The lower target value is permanently set to 45%. If
the humidity is in the range set, the device adjusts
the speed proportionally according to the humidity. If
the humidity is lower than 45% the unit will run in the
lowest speed (humidity protection, V1). When the hu-
midity exceeds the upper target value the unit will run
on speed V3 (nominal airfl ow).
Extract air humidity
(%)
Position potentiometer
(35)
60 0
62 1
64 2
66 3
68 4
70 5
72 6
74 7
76 8
78 9
80 A
(Factory setting)
82 B
84 C
86 D
88 E
90 F
6. Screw on cover (21) fi rmly with screws Torx 10 (20).
7. Set up power supply for ventilation system.
8.
In order to set the ventilation system to the
humidity -controlled mode, keep symbol
pressed for 5 seconds.
When the automatic mode (humidity con-
trol) is activated, the A symbol lights up on
the bottom of the control panel.
6.4. ENABLING/DISABLING VOC SENSOR
OPTIONAL ACCESSORY FOR AUTOMATIC
MODE
In automatic mode, the ventilation system regulates the
speed in dependence of the concentration of pollutants
measured in the extract air. For this purpose, a VOC sen-
sor NEMBUS-VOC (optional accessory) must be insta-
lled, see separate operating and installation instructions.
The VOC upper target value is set using the potentiome-
ter (35) and can be set from 1100 to 2000 ppm.
The lower target value of 450 ppm is permanently pro-
grammed. The upper target value has been pre-set to
1700 ppm at the factory.
If the upper target value is exceeded, then the ventila-
tion system runs with nominal air (V3). If the system falls
down of the lower target value, then the system runs in
the humidity protection speed (lowest speed, V1).
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