DCV compatible: integrated automatic pressure control device, optimizing the DCV performance

Easy installation thanks to a smart design

Low energy consumption: Electronic Commutation motor associated with an automatic pressure control device

Motor placed on vibration isolators to increase acoustic performances

Easy to maintain: the fan has easy-to-open cover

Made in Europe


HD regulation – Pressure control device

Integrated into the VTR fan, the HIGROdynamic automated system adapts the fan speed to the opening degree of the HIGRO® AERECO diffusers and grilles. This means that the electronic system lowers the fan speed at low flow volumes, adapting to the lower airflow resistance in the ducts, and increases the fan speed at higher airflow volumes caused by the open dampers of the hygroregulated grilles. The HIGROdynamic automated system prevents improper operation of the ventilation system, in particular excessive noise from grilles and diffusers at low humidity. The automated regulation of operating parameters reduces the fan’s energy consumption.

Easy to maintain

VTR roofs fans integrate a cover allowing direct access to the motor for impeller cleaning. Only four screws have to be loosen to get access inside the fan. The automatic HD contains integrated switch allows for maintenance work.

Thanks to a combination between high quality material and the demand-controlled ventilation concept, the VTR roofs fans lifetime is substantially increased

EC motors : an energy efficiency guaranteed

The electronic commutation motor of the VTR roofs exhausts fans offers an optimized consumption all the time. Associated to the pressure control device, it automatically adjusts the consumed power to the requested airflow, while maintaining a constant pressure. This way, VTR roofs exhausts fans cover a wide range of uses with the lowest energy consumption.

Roof fan      
Standard code   VTR-71-HD-EX VTR-72-HD-EX
Airflow characteristics      
Max. airflow m3/h 400 700
Max. pressure Pa 320 420
Sound power level of the fan emitted to the suction line
Total value
dB(A) 56 61
Power supply W 230 VAC / 50 Hz
Motor type W synchronous single-phase
Max power consumption W 170 170
Suggested type of connection cabel W YKY or OWY 3×1,5
Required type of protection W overcurrent
Weight  kg 11 12,2
Colour   metal, top cover 5015
Material (main)   galvanized sheet steel
Dimensions A-B-H
mm 430-430-325-280-280-47 430-430-385-340-280-47
Inlet mm ø 160 ø 200
Power box   on the fan
Installation   outside installation only in horizontal position; device requires leveling during installation, due to integrated with drip tray; the fan connect trough elastic connectors or through the SAS silencer; doesn’t use the additional vibration isolator
Integrated switch allows for maintenance work   contains
Cleaning   easy-to-open cover (4 screws)
Direct-drive impeller  
Max. speed  RPM 3930 3230











Installation and Maintenance Instructions - FLY730


Product booklet - FLY707GB

Compatible ventilation systems: