8
Connections
1: Fresh air
2: Supply air
3: Extract air
4: Discharge air
5: Condensate drain
6: Electric and water heating
Automation
T2/T7: Supply air sensor
T9/TC: Heating element frost protection
T3: Extract air sensor
T4: Discharge air and defrost sensor
T8: Fresh air sensor
Functional diagram
Intelligent humidity control
Nilan’s humidity control automatically adapts to the needs of
the family or the building.
The intelligent CTS 602 control unit does not need to have a set
level input for air humidity (RH) to control the air exchange. By
using the integrated humidity sensor, the control unit calcu-
lates the average level itself for the last 24 hours. The average
level provides a basis for deciding whether to change the air
exchange if the air humidity fluctuates.
This ensures that the unit always runs at its most efficient,
based on the actual air humidity level and not on a theoretical
one.
This helps save energy because it automatically adapts to the
requirements in the home. Whether a large family or a single
person is living in the building has a considerable influence on
how much humidity is produced.
The unit also adjusts automatically to summer and
winter level.
5
6
7
8
9
4
3
2
1
10
11
40
50
60
70
80
90
100
30
20
10
Immediately change in % of RH
Average RH (the last 24 hours)
Reduced
ventilation
Forced ventilation
Normal ventilation
If the air humidity changes by more than 5-10% in relation to the
average level, the unit responds with a higher rate of air exchange
accordingly.
At an air humidity below 30% is reduced ventilation stp activated
(adjustable between 15 and 45%)
1
T7
T10
TC
T4
T9
T3
T8
T2
2
3
4
5
7
6
OPERATION
