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Inline centrifugal fan in plastic casing with the air capacity up to 1500 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
  • Supply and exhaust ventilation and air conditioning systems of various premises requiring cost-saving controllable ventilation. 
  • The best ventilation solution for exhaust ventilation of bathrooms, kitchens and other humid premises.
  • Compatible with Ø 100, 125, 150, 200, 250 and 315 mm round air ducts.
  • Durable, impact-resistant and corrosion-free ABS-plastic casing.
  • Airtight terminal box for connection to power mains. 
  • VK … EC P is fitted with a built-in smooth speed controller and power cord with IEC C14 electric plug.
  • High-efficient electronically commutated direct current motors with backward curved blades.
  • Such motors are the most state-of-the-art energy saving solution.
  • Power consumption of EC motors is 35% less as compared to standard motors.
  • The fans with EC motors have excellent aerodynamic performance and low-noise operation.
  • EC motors are featured with high performance and total speed controllable range.
  • High efficiency reaching 90% is the premium advantage of the electronically-commutated motors.
  • The motors are equipped with ball bearings designed for at least 40 000 operating hours.
  • The fan is operated with an external 0-10 V control signal.
  • The air capacity is controlled depending on air temperature, pressure level, smoke content, etc.
  • The speed of the EC motor changes proportionally to fluctuations of the control parameter and the fan delivers a required air volume to the ventilation system.
  • Maximum fan speed does not depend on the current frequency.
  • The fan is compatible both with 50 or 60 Hz power mains.
  • The fans may be integrated into a unified data processing control system.
  • The specially designed software provides precise control of all the fans integrated into the system.
  • The fans are designed for duct mounting in any point of the ventilation system with the casing mounted at any angle.
  • In case of vertical mounting a protective outer hood must be installed on the top. 
  • Fixation to the floor wall or ceiling is performed with the supplied mounting brackets.
  • Electric connection and installation must be performed in compliance with the manual and the wiring diagram on the terminal box.
VENTS VK EC fan kitchen ventilation example
Parameter VK 315 EC
Measurement unit
Duct diameter 315 mm
Design centrifugal -
Voltage 1~230 V
Frequency 50/60 Hz
Sound pressure level at 3 m distance 48 dBА
Power consumption 165 W
Maximum air capacity 1500 m³/h
Current 1.15 A
EC motor yes -
RPM 2500 min-1
Max. transported air temperature -25 +60 °С
Protection rating IP X4 -
Weight 4.9 kg
Casing material plastic -
SEC Class - -
Duct for round air ducts -
Type -
Mounting Inline -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Brochure "VENTS VK EC" (pdf 1.86Mb)
Download high quality image "VENTS VK EC (ErP 2015, 2016, 2018)" (psd 4.28Mb)
Download image "VENTS VK EC (ErP 2015, 2016, 2018)" for your website (png 391.06Kb)
User’s manual "VENTS VK EC" (pdf 1.35Mb)
Parameter Value Measurement unit
∅D 315 mm
ØD1 400 mm
B 414 mm
L 276 mm
L1 40 mm
L2 55 mm
L3 40 mm
Additional characteristics
Additional characteristics
Point on the diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Power [W] 149 164 165 158 94 106 112 104 74 83 90 84 37 39 45 41 17 19 19 17


ƞ, [%] MC EC N VSD [kW] [A] [m3/h] [Pa] [RPM] SR
42.3 А Static 62.1 No 0.164 1.14 1021 247 2472 1


Sound power level, A-filter applied Sound pressure level at 3 m distance, A-filter applied Sound pressure level at 1 m distance, A-filter applied
Sound power level, A-weighted Gen. Octave frequency band [Hz]
  Hz 63 125 250 500 1000 2000 4000 8000 LpA, 3 m [dBA] LpA, 1 m [dBA]
LwA to inlet dBA 86 51 73 71 75 81 82 77 68 66 76
LwA to outlet dBA 87 55 66 76 73 81 84 77 69 67 77
LwA to environment dBA 69 30 48 56 62 64 64 56 49 48 58
Designation key
Designation key
Series Duct diameter Motor Options


100; 125; 150; 200; 250; 315

- synchronous electronically commutated motor
U: speed controller with electronic thermostat and temperature sensor integrated into the air duct. Equipped with power cord and IEC C14 electric plug.
Un: speed controller with electronic thermostat and external temperature sensor fixed on 4 m cable. Equipped with power cord and IEC C14 electric plug. 
 built-in smooth speed controller and power cable with IEC C14 electric plug.
R: power cord with IEC C14 electric plug.


ErP data  
Overall efficiency η, [%]
Measurement category MC
Efficiency category EC
Efficiency grade N
Variable speed drive VSD
Power [kW]
Current [A]
Air flow [m3/h]
Static pressure [Pa]
Speed [n/min-1]
Specific ratio SR
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