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  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Designation key
  • BIM
  • Exhaust ventilation systems for commercial, office and other public or industrial premises for various premises that require reasonable energy saving solutions and controlled ventilation systems.

  • The use of fans equipped with EC motors, provides significant savings in electricity consumption and is the most effective and modern solution in ventilation systems.

  • Such characteristics are especially important for application in public premises as banks, supermarkets, restaurants, hotels, residential premises or domestic spaces.
  • The fan casing is made from steel with polymeric coating (VKH EC).

  • The fans are equipped with high-efficient electronically-commutated direct current motors with external rotor and impellers with backward curved blades.

  • EC motor is free of friction and wear parts as a commutator and brushes. These components are replaced by a maintenance-free electronic circuit board.

  • EC motors are featured with high performance and well controllable speed range.

  • Premium efficiency reaching 90 % is a definite advantage of electronically commutated motors.

Integrated functions and control
  • The fan is controlled by an external 0-10 V control signal. The fan capacity is regulated depending on temperature, pressure, smoke level etc.

  • The fan has low energy consumption at any speed.

  • Maximum fan speed does not depend on the available current frequency and is suitable for operation both at 50 and 60 Hz.

  • Several fans can be integrated into a single computer-driven control system.

  • Custom designed software provides high accuracy control of the fans integrated into a network.

  • The LED-display of the computer shows all the system parameters and the operation mode can be set individually for each fan in the network.

  • VKH…EC fans are designed for mounting on the roof.

  • The mounting plate enables the fan installation on a level surface directly above a ventilation shaft or air duct and the holes on this mounting plate provide reliable rigid fixing of the fan to a static surface.

  • While mounting the VKH...EC fans to the level surface provide a support to exclude possible water or snow ingress into an exhaust vent of the respective ventilation shaft.

  • While installing the fan provide enough space for maintenance works.

  • 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.

VENTS VKH EC fan store roof ventilation example
Parameter VKH 355 EC
Measurement unit
Phase 1 ˜
Voltage 200-277 V
Frequency 50/60 Hz
Current 9.36 A
Sound pressure level at 3 m distance 51 dBА
Power 669 W
Air capacity 3830 m³/h
RPM 1550 min-1
EC motor yes -
Turbine protection rating IP54 -
Weight 27 kg
Design centrifugal -
Transported air temperature -25 ... +50 °С
SEC Class - -
Outdoor mounting yes -
Sound-insulated casing no -
Type exhaust -
Mounting for roof -
Protection rating Protection rating IPX4 -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Select document type
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  • Certificates
  • Technical documentation
"VENTS VKV/ VKH EC" product description 03-2021 (pdf 2.08Mb)
Download high quality image "VENTS VKH EC (ErP 2018)" (psd 2.04Mb)
"Roof fans accessories" product description 02-2016 (pdf 132.53Kb)
Download image "VENTS VKH EC (ErP 2018)" for your website (png 293.5Kb)
"VENTS VKV EC, VKH EC" user's manual 08-2023 (V204-1EN-02) (pdf 4.05Mb)
Parameter Value Measurement unit
∅D 438 mm
∅d 11 mm
H 322 mm
L 625 mm
L1 450 mm
L2 620 mm
Designation key
Designation key
Series and modification Casing material Turbine standard size Motor type
VENTS VKH: horizontal air exhaust
z: galvanized steel (by default)
_: steel with polymeric coating
A: aluminum
190; 225; 250; 280; 310; 355; 400; 450; 500; 560; 630 EC: synchronous electronically commutated motor

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