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Centrifugal roof fan with vertical air exhaust and with maximum air flow of up to 1 450 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
  • Exhaust ventilation system for various premises suitable for roof mounting.
  • Compatible with Ø 200-630 mm air ducts.
  • Suitable for any roof types as well as vertical ventilation shafts.
  • The fan casing is made of steel with polymeric coating (VENTS VKV models), aluminum (VENTS VKVA), galvanized steel (VENTS VKVz).
  • 2-, 4- or 6-pole single- or three-phase asynchronous motors with an external rotor and impeller with backward curved blades.
  • The motor is equipped with thermal overheating protection with automatic restart as well as ball bearings for long service life.
  • For precise features, safe operation and low noise, each turbine is dynamically balanced while assembly.
  • Motors protection rating IP44, IP54.
  • Both smooth or step speed control is performed by means of the thyristor or autotransformer controller.
  • Several fans can be connected to one controller in case the total power and operating current do not exceed the rated controller values.
  • The fan is mounted on the roof directly above the ventilating duct or shaft and is firmly fixed to the flat surface by means of a connecting plate.
  • Electrical connection and installation shall beperformed in compliance with the manual and circuit diagram on the terminal box.
  • For connection of the fans to round air ducts use the following accessories: KKV damper, GVK flexible connector, FKV counter flange.
  • For mounting of the fans to flat surface use the mounting frame RKV.

Parameter VKV 2E 250
50 Hz
VKV 2E 250
60 Hz
Measurement unit
Frequency 50 60 Hz
Design centrifugal centrifugal -
Phase 1 1 ˜
Power 184 232 W
Voltage 230 230 V
A 0.81 0.90 A
Air capacity 1450 1320 m³/h
RPM 2480 2320 min-1
EC motor no no -
Noise level at 3 m 54 53 dBА
Motor protection rating IP44 IP44 -
Transported air temperature -25 ... +50 -25 ... +50 °С
IP Code IP X4 IP X4 -
Number of poles 2 2 -
Mass 9 9 kg
Outdoor mounting yes yes -
Sound-insulated casing no no -
Type exhaust exhaust -
Mounting for roof for roof -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Brochure "VENTS VKV, VKH" (pdf 2.04Mb)
Download high quality image "VENTS VKV (ErP 2018)" (psd 2.26Mb)
Declaration of сonformity "VKV, VKH" (pdf 1.68Mb)
Brochure "Roof fans accessories" (pdf 129.67Kb)
Download image "VENTS VKV (ErP 2018)" for your website (png 417.29Kb)
User's manual "VENTS VKV, VKH" (pdf 3.73Mb)
Parameter Value Measurement unit
∅D 285 mm
A 481 mm
B 425 mm
C 240 mm
Additional characteristics
Additional characteristics
Sound power level A-weighted Gen. Octave-frequency band [Hz] LpA, 3 m dBA LpA, 1 m dBA
dBA 63 125 250 500 1000 2000 4000 8000
LwA to inlet dBA 75 50 63 70 68 69 66 63 53 54 64
LwA to environment dBA 75 51 64 71 67 67 66 62 56 54 64
Designation key
Designation key
Series and modification Casing material Motor modification Turbine standard size
Number of poles Phase
VENTS VKV: vertical air exhaust _: steel with polymeric coating
А: aluminum
z: galvanized steel
Е: single-phase
D: three-phase
190; 220; 225; 250; 280; 310; 355; 400; 450; 500; 560; 630; 710
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