The Sterionizer™ Tube Unit is designed to add ionizing technology into round air Duct systems.

One Sterionizer™ D6 unit is located in the center of the ring and generates ions.

Ring size is customized per order to match customers’ requirements. The tube is made of stainless steel.

Can be used also with THE D5 MODULE.


Tube tube specifications 
Product numberIP3-25V-21
Room Sizeup to 200 m²
Recommended Air Flowup to 6000 m³/h
Min Air Velocity (m/s)Min. 0.3 m/s
No, of integrated Sterionizers D61 unit
Operation Environment Temp. (-10) – (+70)°C, Hum. 20-93% non-condensing
Power Supply AdapterUS Version 110 V, 1 Phase, 60 HZ
EU Version 230 V, 1 Phase, 50 HZ
Duct Unit Input Voltage12/24 V AC/DC, 200 mA, isolated
Control Network ConnectionModbus RS 485
Outside Diameter Dimensions 200, 250, 300 mm
Recommended Lon Concentration1000 to 30000 ions per cm³ in condeteoned spaces
Recommended distance from the air outlet in a duck systemup to 15 m

An example of an installation in a round air duck system.
2 x Tube units are used to supply ions in both directions.

Tube unit installation options


The round air duct is cut and the tube unit is placed inside. The air duct is then resealed tightly.


Put the Tube Unit in place and tighten the pipe sides. Make sure the power and data connector are on the appropriate side.


Create a straight cut in the pipe. Make sure you can insert the Tube Unit and close the pipe sides back together.


The round air duct is cut and the tube unit is placed inside. The air duct is then resealed tightly.


Connect power and data cords according to instructions on pages 16-18. * You may find it 3. easier to do this before moving on to step.


The Tube Unit generates ions, distributes them through the airflow and sub-sections then out to the indoor space.

The Sterionizer™
product overview

In natural habitats, solar and earth-based thermal energies create positive and negative ions that clean and renew outdoor air by removing harmful pollutants, such as bacteria, viruses, fungi, and spores. The Sterionizer™ generates these same positive and negative ions — just like those found in nature — that purify and freshen indoor air by eliminating the harmful pollutants mentioned above.
The Sterionizer™ is a compact electronic module that can easily be integrated into various air treatment products, such as central
air conditioners (duct systems), refrigerators, air purifiers, humidifiers and de-humidifiers, blowers, ventilators, cold stores and more.