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    VENTS OV 4D 250

    VENTS OV 4D 250
    • VENTS OV 4D 250
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    • VENTS OV 4D 250
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    Low pressure axial fans in the steel casing with the air flow up to 885 m³/h for wall mounting.
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    3D model
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    • Description
    • Characteristics
    • Capacity diagram
    • Downloads
    • Dimensions
    • ADDITIONAL TECHNICAL DATA
    • Designation key
    • BIM
    Description
    Description
    APPLICATIONS

    • Combined supply and exhaust ventilation systems for various premises where high air flow at relatively low system resistance is required. 

    • OV fans can be used for the direct air exhaust or pressurization in smoke ventilation systems. 

    • OV fan are suitable for outdoor wall mounting.
    DESIGN

    • The fan casing and the impeller are made of steel with polymeric coating. 
    • OV fan terminal box is equipped with the cord for remote connection.
    MOTOR

    • The impellers are powered by two-, four- or sixpole, single or three phase asynchronous motors with external rotor and built-in thermal overheating protection depending on the model. 
    • Ball bearings in the motor provide long service life designed for at least 40 000 hours.
    • Motor protection rating IP 24.
    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 if the total power and operating current do not exceed the rated controller values.
    MOUNTING

    • Fan is installed on the wall surface by means of a square OV series mounting plate.

    • The fan is powered through the external remote terminal box.

    • Power supply and installation shall be performed in compliance with the manual and wiring diagram on the terminal box.
    Characteristics
    Characteristics
    Parameter OV 4D 250
    50 Hz     		OV 4D 250
    60 Hz     		Measurement unit
    Phase 3 3 ˜
    Voltage 400 400 V
    Frequency 50 60 Hz
    Sound pressure level at 3 m distance 38 38 dBА
    Power consumption 60 89 W
    RPM 1400 1750 min-1
    Protection rating IP 24 IP 24 -
    Maximum air capacity 850 885 m³/h
    Weight 3.5 3.5 kg
    Current 0.17 0.22 A
    Capacity diagram
    Capacity diagram
    • Selection method:
    • Air flow:
    • Pressure:
    Operating point
    • Air flow: --
    • Pressure: ---
    Files archieve
    Downloads
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    • Advertising and printing products
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    • Technical documentation
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    "VENTS OV,OVK,OV1,OV1 R,OVK1,VKF,VKOM,OVP,VKOM(z),VKOM1(z)" user's manual 02-2022 (V03EN-13) (pdf 5Mb)
    "VENTS OV, OVK, VKF" product description 03-2021 (pdf 2.61Mb)
    Download high quality image "VENTS OV (ErP 2015)" (psd 4.66Mb)
    Download image "VENTS OV (ErP 2015)" for your website (png 581.35Kb)
    Dimensions
    Characteristics
    VENTS OV 4D 250
    Parameter Value Measurement unit
    ∅D 260 mm
    ∅d 7 mm
    B 370 mm
    B1 320 mm
    L 135 mm
    ADDITIONAL TECHNICAL DATA
    ADDITIONAL TECHNICAL DATA
    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 environment dBA 59 25 39 43 49 54 54 49 43 38 48
    Designation key
    Designation key
    Series and modification Motor modification Dimension type
    Number of poles  Phase
    VENTS OV: square mounting plate 2
    4
    6
    8    		 E: single phase
    D: three phase    		 200; 250; 300; 350; 400; 450; 500; 550; 630, 710, 800

     

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

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