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VENTS VKH 4D 400


Centrifugal roof fan with horizontal air exhaust and with maximum air flow of up to 3 950 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
Description
Description
APPLICATION
  • 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.
MOTOR
  • 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.
SPEED CONTROL
  • 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.
DESIGN
  • The fan casing is made of steel with polymeric coating (VENTS VKH models), aluminum (VENTS VKHA), galvanized steel (VENTS VKHz).
MOUNTING
  • 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.
  • While mounting VKH fans directly onto the flat roof a supporting block shall be provided to prevent water and snow drops into the vent of the ventilation shaft.
  • 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.

VKH fan store roof ventilation example

Characteristics
Characteristics
Parameter VKH 4D 400
Measurement unit
Frequency 50 Hz
Design centrifugal -
Phase 3 ˜
Power 420 W
Voltage 400 V
A 0.99 A
Air capacity 3950 m³/h
RPM 1440 min-1
EC motor no -
Noise level at 3 m 55 dBА
Motor protection rating IP54 -
Transported air temperature -30 … +60 °С
IP Code IP X4 -
Number of poles 4 -
Mass 35 kg
Outdoor mounting yes -
Sound-insulated casing no -
Type exhaust -
Mounting for roof -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Downloads
Name
Brochure "VENTS VKV, VKH" (pdf 2.04Mb)
Download high quality image "VENTS VKH (ErP 2018)" (psd 2.23Mb)
Declaration of сonformity "VKV, VKH" (pdf 1.68Mb)
Brochure "Roof fans accessories" (pdf 129.67Kb)
Download image "VENTS VKH (ErP 2018)" for your website (png 396.75Kb)
User's manual "VENTS VKV, VKH" (pdf 3.73Mb)
Dimensions
Characteristics
VENTS VKH 4D 400
Parameter Value Measurement unit
∅D 438 mm
∅d 11 mm
A 625 mm
B 620 mm
C 450 mm
H 376 mm
H1 415 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 44 73 70 60 58 55 54 43 54 64
LwA to environment dBA 76 30 56 68 71 70 69 60 46 55 65
Designation key
Designation key
Series and modification Casing material Motor modification Turbine standard size
Number of poles Phase
VENTS VKH: horizontal air exhaust _: steel with polymeric coating
А: aluminum
z: galvanized steel
2
4
6
Е: single-phase
D: three-phase
190; 220; 225; 250; 280; 310; 355; 400; 450; 500; 560; 630; 710
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