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    VENTS VKM 250 Q

    VENTS VKM 250 Q
    • VENTS VKM 250 Q
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    • VENTS VKM 250 Q
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    Inline centrifugal fans in steel casing with air flow up to 900 m³/h.
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    3D model
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    • Description
    • Characteristics
    • Capacity diagram
    • Downloads
    • Dimensions
    • Additional diagrams
    • Designation key
    Description
    Description
    APPLICATIONS
    • Supply and exhaust systems for various premises.
    • The steel casing provides reliable operation in case of outdoor installation. 
    • For premises with high requirements to the noise level we suggest units in low-noise modification (VKM…Q).
    DESIGN
    • The fan casing is made of steel with polymeric coating. 
    • For easy connection and operation the power cord with a plug can be provided (VKM…R).
    MOTOR
    • The impeller with backward curved blades is powered by the single phase motor with external rotor and overheating protection with automatic restart.
    • Some standard sizes are available is high-powered modifications (VKMS).
    •  The VKM…E models are equipped with energy-efficient motor with low energy demand. 
    • The motor is equipped with ball bearings for long service life designed for at least 40 000 hours.
    • For precise features, safe operation and low noise, each turbine is dynamically balanced while assembly.
    • Motor protection rating IP 44.
    SPEED CONTROL
    • Smooth or step speed control with a thyristor or autotransformer speed controller.
    • Several fans may be connected to one speed controller provided that the total power and operating current do not exceed the rated speed controller parameters. 
    • The VKM...P models are equipped with a built-in speed controller (available for diameters 100...315).
    MOUNTING
    • Mounting to wall or ceiling at any angle is performed with fastening brackets supplied with the unit.
    • The fan is powered through the external terminal box.
    • Electric connection and installation shall be performed in compliance with the manual and wiring diagram on the terminal box. 
    THE FAN WITH ELECTRONIC TEMPERATURE AND CONTROL MODULE (U OPTION)
    • The ideal solution for ventilation of the premises requiring permanent temperature control, i.e. greenhouses.
    • The fan with the electronic temperature and speed control module provides automatic control of the motor speed (air capacity) depending on air temperature in the air duct or in the room.
    • The front panel of the electronic module has the following control knobs:
      • speed control knob for setting the motor speed;
      • thermostat control knob for setting the temperature set point;
      • thermostat indicator light.
    • VKM...Un - the model with an external temperature sensor fixed on a 4 m cable (Un / U1n option). 
    • The temoerature sensor has mechanial protection.
    VENTS VKM fan catering ventilation example
    Characteristics
    Characteristics
    Parameter VKM 250 Q
    50 Hz     		Measurement unit
    Phase 1 ˜
    Voltage 230 V
    Frequency 50 Hz
    Sound pressure level at 3 m distance 47 dBА
    Power consumption 95 W
    Maximum air capacity 900 m³/h
    Current 0.47 A
    RPM 2050 min-1
    Max. transported air temperature -25 +45 °С
    Protection rating IP X4 -
    Design centrifugal -
    Weight 6.2 kg
    Duct diameter 250 mm
    Casing material polymer coated steel -
    SEC Class C -
    Duct for round air ducts -
    Type supply and exhaust -
    Mounting Inline -
    Capacity diagram
    Capacity diagram
    • Selection method:
    • Air flow:
    • Pressure:
    Operating point
    • Air flow: --
    • Pressure: ---
    Files archieve
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    "VENTS VKM" product description 08-2023 (pdf 1.6Mb)
    Download high quality image "VENTS VKM 100-315 (ErP 2018)" (psd 2.16Mb)
    Download high quality image "VENTS VKM 355-450 (ErP 2018)" (psd 3.22Mb)
    Certificate GS "VKM,VKMz" (pdf 405.03Kb)
    Declaration of сonformity "VK,VKM,VKMz" (pdf 1.64Mb)
    Certificate LVD "VKM,VKMz" (pdf 107.81Kb)
    Download image "VENTS VKM 100-315 (ErP 2018)" for your website (png 299.53Kb)
    Download image "VENTS VKM 355-450 (ErP 2018)" for your website (png 407.36Kb)
    "VENTS VKM" user's manual 01-2022 (V05EN-11) (pdf 977Kb)
    "VENTS VKM(S)" user's manual 01-2024 (V05-3EN-02) (pdf 884.37Kb)
    Dimensions
    Characteristics
    VENTS VKM 250 Q
    Parameter Value Measurement unit
    ∅D 248 mm
    B1 355 mm
    ØD1 345 mm
    B 395 mm
    L 250 mm
    L1 25 mm
    L2 30 mm
    L3 40 mm
    Additional diagrams
    Additional diagrams
    Sound-power level LpA, 3 m dBA LpA, 1 m dBA
      Gen. Octave-frequency band [Hz]
      Hz 63 125 250 500 1000 2000 4000 8000
    LwA to inlet dBA 89 60 76 83 81 83 79 75 64 68 78
    LwA to outlet dBA 87 63 75 72 80 82 80 75 62 66 76
    LwA to environment dBA 67 34 48 59 62 62 60 49 38 47 57
    Designation key
    Designation key
    Series Air duct diameter Options
    VENTS VKМ  S: high- powered motor

    100; 125; 150; 160; 200; 250; 315; 355; 400; 450

    		 Е: low energy demand motor.
    Q: low-powered motor.
    Un: speed controller with an electronic thermostat and a temperature sensor fixed on a 4 m cable. Temperature-based operation logic.
    U2n: speed controller with an electronic thermostat and a temperature sensor fixed on a 4-meter cable. Temperature-based switching on/off.
    R1: power cord with a mains plug.
    P: integrated smooth speed controller.
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