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VENTS KSB 355 K2


Inline centrifugal fan in heat- and sound-insulated casing with air flow up to 2235 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional diagrams
  • DESIGNATION KEY
Description
Description
PURPOSE DESIGN
  • KSB fan design allows to use them in supply and exhaust ventilation systems in premises with high requirements to the noise level and with limited space for mounting.
  • For example, the unit design includes a possibility of space-restricted installation above suspended ceilings.
  • They are designed for mounting into Ø 100-500 mm air ducts.
  • The fan casing is made of aluzinc.
  • For easy installation and operation, the top cover of the fan is secured with a special lock.
  • Warm and sound insulation is made of non-combustible mineral wool 50 mm thick.
  • To ensure better noise absorption, the inner surface of the insulation is made of a perforated metal sheet.
  • The round connecting spigots are rubber sealed.
MOTOR MOUNTING
  • The fans are equipped with asynchronous motors with an external rotor and centrifugal impellers with backward curved blades.
  • The motors are equipped with an integrated overheating protection with automatic restart.
  • The use of ball bearings with specially selected lubricating oil guarantees low noise and makes the fan completely maintenance-free.
  • Inline fans are designed for round air ducts.
  • The fans are installed at an air duct junction.
  • The use of flexible connectors requires  fixation of the fan on the building structure by means of supports, mounts, or fixing brackets.
  • The fan can be fixed in any position, taking into account the air flow direction indicated by the arrow on the fan casing.
  • While mounting the fan provide enough access for servicing and repair operations.
SPEED CONTROL
  • The control can be either smooth or stepped and carried out with a thyristor or autotransformer regulator.
  • Several fans can be connected to one controller, provided that the total power and operating current do not exceed the nominal parameters of the controller. 
Characteristics
Characteristics
Parameter KSB 355 K2
Measurement unit
Highpowered motor Highpowered motor no -
Sound- and heat-insulated casing yes -
Low-powered motor no -
Duct diameter 355 mm
Design centrifugal -
Phase 1 ˜
Voltage 230 V
Frequency 50 Hz
Sound pressure level at 3 m distance 48 dBА
Power consumption 202 W
Maximum air capacity 2235 m³/h
Current 0.89 A
RPM 1330 min-1
Max. transported air temperature -25 +55 °С
Protection rating IP X4 -
Weight 58 kg
Casing material aluzinc -
SEC Class - -
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
Downloads
Name
Brochure "VENTS KSB K2" (pdf 1.34Mb)
Download high quality image "VENTS KSB K2 (ErP 2018)" (psd 3.64Mb)
Download image "VENTS KSB K2 (ErP 2018)" for your website (png 216.13Kb)
Dimensions
Characteristics
VENTS  KSB 355 K2
Parameter Value Measurement unit
∅D 354 mm
B 830 mm
B1 641 mm
H 500 mm
L 927 mm
L1 885 mm
L2 804 mm
Additional diagrams
Additional diagrams
Sound power level [dBA], A-weighted Sound pressure level at 3 m distance, A-weighted Sound pressure level at 1 m distance, A-weighted
Sound power level 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 78 61 72 77 66 61 53 53 41 58 68
LwA to outlet dbA 83 68 78 80 76 61 53 56 47 63 73
LwA to environment dbA 68 52 66 64 47 41 32 33 33 48 58
DESIGNATION KEY
DESIGNATION KEY
Series Spigot diameter Modification Motor Options
VENTS KSB 100; 125; 150; 160; 200; 250; 315; 355; 400; 450; 500 К2: heat- and sound-insulated casing S: high-powered motor;
Q: low noise modification
R: power cable with IEC C14 plug
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