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VENTS VKMz 250 Q


Inline centrifugal fan. Maximum capacity - 1030 m3/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional technical data
  • Designation key
Description
Description
APPLICATIONS
  • Supply and exhaust ventilation systems for commercial, office and other public or industrial premises.
  • For premises with high requirements to noise level we offer units in low-noise modification (VKMz…Q).
DESIGN
  • The fan casing is made of galvanized steel. 
 
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 with high-powered motors (VKMS).
  • The motor is equipped with ball bearings for long service life designed for at least 40000 hours.
  • For precise features, safe operation and low noise, each turbine is dynamically balanced while assembly.
  • Motor protection rating is IP44.
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.
MOUNTING
  • Mounting at any angle to wall or ceiling is performed with fastening brackets supplied with the unit.
  • The fan is powered by means of the external terminal box.
  • Electric connection and mounting shall be performed in compliance with the manual and wiring diagram on the terminal box.
Characteristics
Characteristics
Parameter VKMz 250 Q
50 Hz
VKMz 250 Q
60 Hz
Measurement unit
Low-powered motor yes yes -
Voltage 1~ 220-240 1~ 220-240 V
Frequency 50 60 Hz
Sound pressure level at 3 m distance 51 51 dBА
Power consumption 134 175 W
Current 0.59 0.77 A
Maximum air capacity 980 1030 m³/h
RPM 2785 2880 min-1
Max. transported air temperature -25 +50 -25 +50 °С
Protection rating IP X4 IP X4 -
Design centrifugal centrifugal -
Motor protection rating IP44 IP44 -
Weight 5.1 5.1 kg
Duct diameter 250 250 mm
Casing material galvanized steel galvanized steel -
Outdoor mounting yes yes -
SEC Class B B -
Duct for round air ducts for round air ducts -
Mounting outdoor mounting, wall mounting, Inline outdoor mounting, wall mounting, Inline -
* To meet the requirements of ErP 2018, a speed controller and local demand control typology must be applied (connect a sensor). To meet the requirements of ErP 2018, a speed controller and local demand control typology must be applied (connect a sensor). -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Downloads
Select document type
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  • Certificates
  • Technical documentation
Name
"VENTS VKMz" product description 05-2023 (pdf 1.5Mb)
Download high quality image "VENTS VKMz (ErP 2018)" (psd 4.34Mb)
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 VKMz (ErP 2018)" for your website (png 458.01Kb)
"VENTS VKMz" user's manual 07-2023 (V05-1EN-12) (pdf 930.18Kb)
"VENTS VKMz" user's manual 08-2018 (V05-1EN-08) (pdf 1.15Mb)
Dimensions
Characteristics
VENTS VKMz 250 Q
Parameter Value Measurement unit
∅D 249 mm
B1 380 mm
ØD1 332 mm
B 340 mm
L 213 mm
L1 25 mm
L2 29 mm
L3 40 mm
Additional technical data
Additional technical data
Sound-power level
  Gen. Octave-frequency band [Hz]
  Hz 63 125 250 500 1000 2000 4000 8000
LwA to inlet dBA 69 46 59 61 65 62 58 60 54
LwA to outlet dBA 74 49 59 63 66 67 62 64 56
LwA to environment dBA 60 42 54 54 44 37 37 52 45
Designation key
Designation key
Series Air duct diameter Options
VENTS VKMz S: high-powered motor

100; 125; 150; 160; 200; 250; 315

Q: low-powered motor
R1: power cord with a mains plug
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