KST-20 Vento Airing Cooling Dehumidification


Climate Controller KST-20 VENTO

automatic, controlled ventilation and dehumidification and cooling of rooms with aH-Controlled technology *

* aH-Controlled: Dehumidification depending on the absolute humidity

product description

The KST-20 Vento is a climate controller with aH-Controlled technology for ventilation, dehumidification and cooling for private, commercial and industrial rooms of all kinds. With the three operating modes for ventilation, dehumidification and cooling, the climate controller KST-20 Vento can be flexible in almost all living, working and industrial areas are used.


Produkt features

  • Power supply: 230 VAC
  • Protection class: IP 65
  • Dimensions in mm (LxWxH): 160 x 90 x 50
  • Housing: high quality ASA + PC (UL 94 V-0) for heavy duty, flame retardant and self-extinguishing


The new, compact climate control KST-20 Vento, for automatic and controlled dehumidification, ventilation and cooling of rooms, is an advanced control unit for ventilation equipment.

Residential ventilation DIN 1946-6

For living rooms, the device can conform to the DIN standard 1946-6 and control differentiated between different ventilation levels.

Temperature-dependent cooling

By simply adjusting the configuration parameters, the device becomes temperature-dependent cooling control for factories and manufacturing halls as well as for server rooms and many other sensitive electrical installations.

Dehumidification depending on the absolute humidity

In the dehumidification mode, the climate control KST-20 Calima is suitable for mold avoidance and protection of buildings as well as to maintain a comfortable feel-good climate. The room is controlled and reliably dehumidified and the device automatically ensures an optimum temperature and humidity ratio depending on the absolute humidity.

The basic principle of ZILA climate control systems is based on the comparison of the water vapor content of the room air and the outside air. The water vapor content is described by the absolute humidity (aH = absolute humidity) and is a measure of the "actual" moisture in the air. The comparison of the absolute humidity of the indoor and outdoor clima ensures that moist air is transported out of the rooms and that only dry air from outside is introduced. "AH Controlled" means the automated determination of suitable times for ventilation by the dehumidification or ventilation device, taking into account the climatic conditions inside and outside the building. The devices control the most common fans with and without heat recovery as well as motor-driven window openers fully automated. This technology ensures a healthy building and a good indoor climate and is also extremely energy-efficient, since it is only aired when the need arises and an air exchange is meaningful.

comfort functions

In addition to the automatic operating modes for ventilation, dehumidification and cooling, the functional scope of the KST-20 Vento climate control system includes further comfort functions.With the integrated timer, pause times and active times for the ventilation units can be set. A ventilation process can be started manually at any time using a button on the housing of the control unit. The "frost protection function" prevents the monitored room from cooling down too much, while a "dry protection function" ensures that the humidity in the room remains at a healthy level for people and buildings.

The various configurations and settings can be made easily via the illuminated display and the operating keys.

Technical specifications

Technical specifications

  • Measuring range humidity: 0…100 % RH,
  • Measuring accuracy humidity: ± 2%
  • Measuring range temperature: -40…+ 80‚°C
  • Measuring accuracy Temperature: ± 0.2 °C
  • Signal output: I2C

connection options

  • Separate connections for supply and exhaust air elements up to a maximum of 500 W
  • Alternatively, the following devices can be connected
    • 1-stage ventilation fans
    • 2-stage ventilation fans
    • Speed-controlled fans (0…10VDC)
    • 230V motorized window opener
    • 12V ventilation flaps

from left to right: Power supply, Actuator1, Actuator2, Climate sensor inside / outside, Climate sensor inside / outside

operating conditions

  • Temperature: 0…50 °C
  • relative humidity: 85 % non-condensing
  • EMC / ESD: EN50082-1 / 2

fields of application

  • Dehumidification of rooms and buildings, such as cellars, archives, museums, churches,
  • Cooling of production halls and server rooms
  • Ventilation of living spaces according to DIN 1946-6
  • Airing meeting and classrooms, sports halls and gyms


Demand-oriented and user-independent cellar dehumidification with the KST-20 climate control

Energy-efficient cooling of rooms with the KST-20 climate control


Product ordering and contact

Lots of our probes, transmitters and controllers from the fields of pressure, climate, leakage and ventilation can be individually configured and adapted to their applications. In addition, important aspects of preparing a bid are various media and electrical connections as well as questions about accessories. Therefore, let us advise you professional and not binding. Our experienced staff prepares you a suitable offer quickly.

Our experienced sales staff and engineers are looking forward to your inquiry!

Contact us

Call now under the phone number +49 (0) 3681 86-7300 or send us your request via email to

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