STIEBEL ELTRON | VLR 70 S | Decentralised Ventilation | Education

Decentralised ventilation systems from STIEBEL ELTRON
Our decentralised ventilation systems with heat recovery ensure clean, fresh air in every room. The single units are mounted in the external wall, making them ideal for modernisation and new build projects.
How a decentralised ventilation system works!
An air distribution system is not needed for decentralised systems. They are therefore especially suitable for retrofitting in a modernisation project. We offer systems with and without heat recovery: in the case of decentralised systems with heat recovery, your installer puts a single unit in the external wall of each room to be ventilated. This may involve systems with two fans and heat recovery via a countercurrent heat exchanger, for example.
Moreover, you can use units also known as reversible fans. These are always installed in pairs and run alternately so that no underpressure or overpressure is created in the room. If required, you can operate up to eight ventilation units by means of one control unit and one programming unit. Through regenerative heat transfer, the high quality aluminium heat exchanger is charged with heating energy from the extract air. The EC fan changes direction after 40 seconds and blows fresh air from the outside into the room. As this happens, the previously absorbed heating energy is transferred to the supply air. This reduces heating energy loss by up to 93 percent.
A comfortable atmosphere: the result of good indoor air
What affects our room climate? First, of course, there is the weather: summer heat, dry cold, humid conditions. Fine dust and pollen can get into your home when you open the windows. And you, too, have an impact. After all, you breathe, cook, clean and shower, exhaling carbon dioxide into the indoor air, creating an abundance of scents and smells, and emitting heat and water vapour. A three-person household emits up to ten litres of water per day in the form of water vapour into the indoor air. And emissions from building materials, furniture and floors can also have a negative impact on your indoor air.
The logical consequence is that the air must be replaced regularly. If it is not, the oxygen content of the air drops while the amount of CO2 and harmful substances it contains increases. And excessive concentration of carbon dioxide in indoor air has been shown to cause discomfort, as well as to negatively affect cognitive performance. And none of us want that... the solution is a ventilation system that works fully automatically to ensure greater living comfort and a better atmosphere in your home!
Decentralised ventilation unit with heat recovery for new build and modernisation
Rapid, hygienic cleaning thanks to aluminium heat exchanger
Very good filter performance due to filters on the inside and outside
No condensate run marks on the wall face
Quick tool-free filter change and tool-free visual monitoring of the heat exchanger, due to compact design of fan unit
Product details
Application • This decentralised ventilation unit with heat recovery is used for ventilating apartments and small commercial properties.
Convenience features • Contemporary design with separate programming unit.The appliance is suitable for living spaces and commercial premises up to approx. 100 m2.• Thanks to the axial fan that can overcome back-pressure, use in locations exposed to the wind is possible.• The appliance is equipped with an efficient heat exchanger made of aluminium.• The external panel is watertight against heavy rain; it is made of stainless steel and powder coated.The internal panel is made of plastic.• Straightforward filter replacement with easy-to-remove fan unit.Fine dust filters are available as accessories.
Efficiency • EC fan ensures efficient operation.
Installation • The unit is installed in a round or square wall outlet.• The easily accessible mains connection is located on the inside of the fan unit.
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