BESF Ventilation box fan

BESF

Ventilation box fan

Box fan in 7 sizes – most can be selected with EC motor. Compact box fan targeted need for fast flow changes.
BESF
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BESF
DESCRIPTION
The BESF box fan is a fan with forward-curved F impeller and sound-damping insulation. BESF is available in 7 sizes: BESF146, -160, -180, -200, -225, -250, and -280.

For most sizes, a model with EC motor can be selected for more efficient operation. Get an overview of the individual sizes below.

TEMPERATURE
In normal operation, tolerates temperatures up to 60 °C.

Combustion-gas fan
If there is a need for a certified combustion gas fan, we draw your attention to the FSB box fan, described under the product group Fire Protection
BESF

Product advantages

  • Compact
  • Fast flow changes
  • Reliable solution
  • F wheels (forward curved blades)
References Conditions
 
BESF160-4-1

CONDITIONS:* I is the maximum absorbed current throughout the control range - or the full load current if this is larger** P1 is the maximum absorbed power from the mains supply, where P2 is the motor's nominal output.Stated data for for t = 20°CDensity = 1.2 /m3Values are based on the use of a transition piece equivalent to OGSRGas temperature: min. -12°C, max. +60° CAmbient temperature: Max. +40° CPressure ratio: < 1,11other points in acc. with EC327/2011 - see product instructions

 
BESF16021EC2  
BESF18041EC2  
BESF20041EC2  
BESF22541EC2  
BESF25041EC2  
BESF280EC

CONDITIONS:* I is the maximum absorbed current throughout the control range - or the full load current if this is larger** P1 is the maximum absorbed power from the mains supply, where P2 is the motor's nominal output.Stated data for for t = 20°CDensity = 1.2 /m3Values are based on the use of a transition piece equivalent to OGSRGas temperature: min. -12°C, max. +60° CAmbient temperature: Max. +40° CPressure ratio: < 1,11other points in acc. with EC327/2011 - see product instructions

References Max. Total efficiency (A-D) (%) Efficiency level requirements ECO efficiency level during optimal operating point EC motor Nominal speed (RPM) Power supply Overload protection Engine power (kW)
 

49, N(2015)

 

EC motor with integral VSD

1400

1x230 V

Integrated in motor control

 
BESF160-4-1        

1400

 

Integral thermal cutout (TP211) in motor power circuit

0,9

 

N, 49(2015)

 

EC motor with integral VSD

1400

1x230 V

Integrated in motor control

 
BESF16021EC2

50,3

49, N (2015)

65,1

EC motor with integral VSD

2800

1x230 V

Integral thermal cutout (TP211) in motor power circuit

0,75

BESF18041EC2

48,5

49, N (2015)

69,3

EC motor with integral VSD

1440

1x230 V

Integrated in motor control

0,18

BESF20041EC2

48,6

49, N (2015)

67

EC motor with integral VSD

1435

1x230 V

Integrated in motor control

0,37

BESF22541EC2

53,9

49, N (2015)

71,3

EC motor with integral VSD

1420

1x230 V

Integrated in motor control

0,75

BESF25041EC2

53,5

49, N (2015)

69

EC motor with integral VSD

1420

1x230 V

Integrated in motor control

1,1

BESF280EC

58,5

49, N (2015)

73,2

EC motor with integral VSD

1448

3x400 V

Integrated in motor control

2,2

Conditions:

  • I is the maximum absorbed current throughout the control range - or the full load current if this is larger
  • P1 is the maximum absorbed power from the mains supply, where P2 is the motor's nominal output.
  • Stated data for for t = 20°C
  • Density = 1.2 /m3
  • Values are based on the use of a transition piece equivalent to OGSR
  • Gas temperature: min. -12°C, max. +60° C
  • Ambient temperature: Max. +40° C
  • Pressure ratio: < 1,11
  • other points in acc. with EC327/2011 - see product instructions

The BESF box fan can be mounted in various positions. Note, however, that the ventilator must not be positioned with the motor turned downwards. Standard installation: A Alternative installation options B/C/D: NB: During intermittent operation, there is a risk of condensation in the motor – use mounting method A or B The BESF box fan must not be installed outdoors – here we refer to the outdoor version of the BESB (OD).

BESF
References A (mm) B (mm) C (mm) G (mm) E Ø (mm) Weight (kg)

345

295

200

350

160

 
BESF160-4-1

370

320

235

400

200

17

370

320

235

400

200

 
BESF16021EC2

370

320

235

400

200

22

BESF18041EC2

410

355

235

400

200

23

BESF20041EC2

440

380

280

500

250

23

BESF22541EC2

500

430

280

500

250

32

BESF25041EC2

550

470

360

650

315

32

BESF280EC

600

515

360

650

315

65

References Max. airflow (m³/h)

540

BESF160-4-1

970

970

BESF16021EC2

1475

BESF18041EC2

1740

BESF20041EC2

1800

BESF22541EC2

2520

BESF25041EC2

3240

BESF280EC

5080

References Frequency (Hz) Max. current (A) Voltage (V) Max. power Engine power (kW) ErP-effektivitetsgrad i optimalt driftspunkt Motor Amp/kW

50

0,75

         
BESF160-4-1

50

0,8

 

0,19

0,9

 

3,8 / 0,75

 

0,85

         
BESF16021EC2

50

3,8

1x230

 

0,75

   
BESF18041EC2

50

1,4

1x230

 

0,18

   
BESF20041EC2

50

2,6

1x230

 

0,37

67

 
BESF22541EC2

50

5

1x230

 

0,75

   
BESF25041EC2

50

8,5

1x230

 

1,1

69

 
BESF280EC

50

5,3

3x400

 

2,2

73,2

 

BESF box fans are made from Aluzinc® AZ185 class C4 in accordance with EN/ISO12944-2 and sound and condensation-insulated with 30 mm mineral wool.

As standard, BESF can handle gas temperatures up to 60°C.

When used as a smoke extract fan:

BESF146-180 can as standard withstand up to 200°C for 60 min.

As standard, BESF200-280 can handle up to 300°C for 60 min.

If certified fire gas fan is to be used, we refer to the FSB fan

The fan impeller is an F-impeller made from galvanised steel.

It has forward-curved blades, which means that the box fan is able to generate a high pressure for its compact size.

The spigots on BESF have rubber gaskets to ease mounting of ducts.

To minimise noise and vibration, the box fan is fitted as standard with efficient vibration dampers mounted on brackets.

To minimise system pressure drop when connecting to a duct system, we recommend the use of an OGSR transition piece (accessory).

OGSR is a specially developed circular transition piece with integral guide panels; it can be supplied for BESF200, 225, 250 and 280 and allows maximum capacity and efficiency to be achieved.

OGSR is not available with other BESF models.

BESF box ventilators have their motor connected directly to the ventilator impeller.

BESF box fans are available with four types of motor:

  • EC-motor
  • Single-phase AC motor

The motors are made to protection class IP54 and all materials are as a minimum class F (155 °C). All motor types have integral current overload protection.

Products and accessories references

  • BESF160-4-1
    BESF160-4-1
  • BESF16021EC2
    BESF16021EC2
  • BESF18041EC2
    BESF18041EC2
  • BESF20041EC2
    BESF20041EC2
  • BESF22541EC2
    BESF22541EC2
  • BESF25041EC2
    BESF25041EC2
  • BESF280EC
    BESF280EC

Documents

Showing 1 - y of document
  • BESF EF Declaration of Conformity
    Certificates and Declarations
    126 KB
  • BESF, BESF/7 - Version 2, Mounting instruction
    Manuals
    2 MB
  • DIAGRAM FOR DTH16041EC, DTH20041EC, DTV16041EC, DTV20041EC, VVR16041EC, VVR20041EC, BESF14641EC
    Vejledninger
    202 KB

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