The Silvento ec as a clamp fan - quickly installed

Exhaust air series

The Silvento ec is an extract air unit that works very efficiently.

Special features

The Silvento ec clamp fan can be installed particularly quickly and easily.

You determine the functions of the Silvento ec by selecting the various control boards. This makes it a true all-rounder.

You can choose from seven different boards to control the Silvento ec:

Basic board: The Silvento ec has seven ventilation levels between 15 and 60 m³/h. They can also be combined with time delay, interval switching and switch-on delay.

Basic board 90: As described above, but with ventilation stages up to 90 m³/h.

Comfort board: In addition to the capabilities of the basic board, this is also equipped with a humidity and temperature sensor. A finer and more individual humidity control, which even controls the fan without permanent basic ventilation, has never been available before.

Comfort board 90: As described above, but with ventilation stages up to 90 m³/h.

Comfort+: In addition to the familiar switching, time and configuration options (e.g. switch coupling, time follow-up, interval or humidity sensors), the Comfort+ (pronounced Comfortplus) board now offers a brand new VOC sensor. In addition, an integrated humidity and temperature sensor system or CO2-equivalence control can be switched on and optionally available motion sensors or radio modules can be integrated.

Comfort 90+: As described above, but with ventilation stages up to 90 m³/h.

Basement board: With the basement board, the Silvento ec ensures clean and hygienic ventilation of the basement area. Commissioning is carried out in conjunction with the circuit board type 5/EC-KE and the switch type 5/W2 FK. The fan permanently records the air humidity and forms an average value, which can be achieved by ventilation.

All modules can be combined with plug-on extension modules:

The motion detector module with a radar-supported motion detector makes switches superfluous. All control techniques of the basic module are triggered via the motion detector.

With the help of the optional radio module, the Silvento ec can be controlled remotely by radio from external controls, sensors or with radio switches without any additional wiring.


Installation in areas 1 and 2 in bathrooms and shower rooms in accordance with VDE 100 is permitted.


The Silvento ec has the general building authority approval Z-51.1-215 of the DIBt.

Characteristic curve tested for 60 m³/h free-blowing.


To extend the range of functions and to use logging functions, the Silvento ec can be used with the diagnostic software.

Volume flows can be adjusted in case of deviation from the required value.

Due to its extremely low energy consumption, the Silvento ec is so efficient that it does not fall into the classification for the energy label and therefore must not be labelled at all.

Art.-no. 40078, Art.-no. 40079

Der Klemmlüfter Silvento ec kann besonders schnell und einfach installiert werden.

Technical specifications
Silvento-Type V-ec or KL-ec

5/EC-ZI, 5/EC-ZI 90
5/EC-FK, 5/EC-FK 90
5/EC-FK+, 5/EC-FK 90+

Volume flow (fine adjustable) 15/20/30/40/45/50/60/(90) m³/h
Sound power level LW 18/22/29/36/38/40/44/(52) dB(A)
Sound pressure level at 1 metre distance 10/14/21/28/30/32/36/(44) dB(A)
Sound pressure level at 3 metre distance 0/5/12/18/20/23/26/(34) dB(A)
Power consumption 1,8 - 6,2 (14,5) W
Supply voltage 200 - 240 V AC 50/60 Hz
Control voltage 0 - 10 V
Protection class IPX5

The technical data always refer to finely adjusted volume flows in free-blowing condition (test arrangement with 1 m DN100 aluflex pipe with a 90° bend).


Choose the following for the clamp fan

1) One of seven control boards

2) One of the expansion modules

3) Diagnostic software



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