Table of Contents
Advertisement
Climate Controller KST-20 Vento | KST-20 Vento/CO2 | KST-20 Vento/RN
building protection as well as for maintaining a
comfortable climate.
Controlled dehumidification is based on the
comparison of absolute humidity. In this process,
moist room air is exchanged with drier outside air.
During normal operation, the following climate
information is shown on the display:
Relative humidity indoor/outdoor (rHi, rHa)
•
•
Temperature inside/outside (Ti, Ta)
•
Absolute humidity inside/outside (aHi,aHa)
The KST-20 Vento starts room dehumidification as
soon as the absolute outside humidity is lower than
the absolute inside humidity (aH
room is dehumidified in a ventilation cycle
consisting of an active and a passive phase. The fan
is switched on in the active phase. During the
passive phase, the fan is off and the room air
contaminated with moisture can mix with the
supplied drier outside air. This permanent shock
ventilation ensures efficient room dehumidification
as long as the climatic conditions aH
are fulfilled. A ventilation cycle for both the active
and passive phases lasts 10 minutes. Depending on
the type of fan, there are different possibilities for
speed control.
Further information:
For information on the factory
settings, refer to the "Factory
settings" chapter
dehumidification by 1-stage fans
The KST-20 Vento works as an intelligent power
switch and controls the active and passive phases of
1-stage fans.
< aH
). The
inside
outside
< aH
inside
outside
Dehumidification with 2-stage fans
2-stage fans can be operated at either a reduced or
an increased speed during the active phase. The
KST-20 Vento switches on the second stage if the
following climatic conditions are given:
aH
> aH
+5g/m³.
inside
outside
Dehumidification with speed-controlled fans
Speed-controlled fans are operated within the two
adjustable limits "minimum speed" (DZMIN) and
"maximum
speed"
corresponds to the control voltage in percent. The
lower limit DZMIN starts by default at aH
aH
+0,2g/m³. The upper speed limit DZMAX is
outside
activated at aH
> aH
inside
the output of the control voltage is linear.
Handbook Version: ENG_05052020_ANHU_KST20VENTO|
(DZMAX).
The
speed
inside
+10g/m³. In between,
outside
>
6
Advertisement
Table of Contents
