BESB Ventilation box fan

BESB

Ventilation box fan

Box fan with EC motor – available in four sizes. Low energy consumption, low sound and noise level and low service costs.
BESB
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BESB
DESCRIPTION:
The BESB box fan is a low-energy fan with backward-curved B impeller and sound-damping insulation.

BESB is available in 4 sizes - BESB250, 315, 400 and 500. BESB315, 400 and 500 are supplied with an airflow measurement outlet.

MOTORS:
All BESB box fans are equipped with an EC motor. Get an overview of the individual sizes below.

TEMPERATURE:
In normal operation, the BESB box fan tolerates temperatures up to 80 °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 Safety

OUTDOOR VARIANT:
BESB can be ordered in an outdoor version (OD), which has the following features.

> Suitable for outdoor assembly
> Temperature range - tolerates hot air up to 200 °C
BESB

Product advantages

  • Economy fan
  • Low energy consumption
  • Low operating costs
  • Longer service intervals
  • Low sound level
  • Backward curved blades
References Conditions
BESB25041EC2

Conditions:> * I is the maximum current drawn in the entire regulation range – or full load current if this is greater> ** P1 is the maximum power drawn from the mains, where P2 is the power rating of the motor.> Specified data is at t = 20°C> Density = 1.2 kg/m3> Medium temperature: min. -12°C, max. +80°C> Ambient temperature: max. +40°C> Pressure ratio: < 1.11

BESB25041EC2OD, Outdoor  
BESB25041EC2S  
BESB31541EC2  
BESB31541EC2OD, outdoor  
BESB31524EC2S  
BESB40041EC2  
BESB40041EC2OD, outdoor  
BESB40041EC2S  
BESB50041EC2  
BESB50041EC2OD, outdoor  
BESB50043EC

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 are for t = 20°C

Density = 1.2 kg/m3

Gas temperature: min. -12°C, max. +80° C

Ambient temperature: Max. +40° C

Pressure ratio: < 1,11

other points in acc. with EC327/2011 - see product instructions

BESB50041EC2S  
References Max. Total efficiency (A-D) (%) Ventilation energy class - Average climate Efficiency level requirements ECO efficiency level during optimal operating point EC motor Nominal speed (RPM) Power supply Overload protection Engine power (kW)
BESB25041EC2

68,4

 

64, N(2015)

96,8

EC motor with integral VSD

1400

 

Integrated in motor control

0,18

BESB25041EC2OD, Outdoor

68,4

 

64, N(2015)

96,8

EC motor with integral VSD

1400

 

Integrated in motor control

0,18

BESB25041EC2S

68,4

Ja

64, N(2015)

96,8

EC motor with integral VSD

1400

1x230 - 50 Hz

Integrated in motor control

0,18

BESB31541EC2

69,0

 

64, N(2015)

92,8

EC motor with integral VSD

1400

 

Integrated in motor control

0,37

BESB31541EC2OD, outdoor

69

 

64, N(2015)

92,8

EC motor with integral VSD

1400

 

Integrated in motor control

0,37

BESB31524EC2S

69

 

64, N(2015)

92,8

EC motor with integral VSD

1400

 

Integrated in motor control

 
BESB40041EC2

71,6

 

64, N(2015)

95

EC motor with integral VSD

1435

 

Integrated in motor control

0,75

BESB40041EC2OD, outdoor

71,6

 

64, N(2015)

95

EC motor with integral VSD

1435

 

Integrated in motor control

0,75

BESB40041EC2S

71,6

Ja

64, N(2015)

95

EC motor with integral VSD

1435

1x230 - 50 Hz

Integrated in motor control

 
BESB50041EC2

71,5

 

64, N(2015)

89,6

EC motor with integral VSD

1420

 

Integrated in motor control

1,1

BESB50041EC2OD, outdoor

71,5

 

64, N(2015)

89,6

EC motor with integral VSD

1420

 

Integrated in motor control

1,1

BESB50043EC

74,6

 

64, N(2015)

89

EC motor with integral VSD

1757

 

Integrated in motor control

2,2

BESB50041EC2S

71,5

Ja

64, N(2015)

89,6

EC motor with integral VSD

1420

1x230 - 50 Hz

Integrated in motor control

 

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 box fan can be mounted in different positions, however, space for insulating the ducts must be taken into account. In installation options B and D, with the door facing upwards, special fittings must be used to hold the door (accessory). The box fan should not be screwed onto the supporting base. The base must be stable and vibration free, with no sagging. The outdoor model can be installed according to options A and B.

BESB BESB BESB BESB
References A (mm) B (mm) C (mm) G (mm) E Ø (mm) Weight (kg)
BESB25041EC2

785

625

325

800

250

52

BESB25041EC2OD, Outdoor

785

625

325

800

250

52

BESB25041EC2S

785

625

325

800

250

52

BESB31541EC2

785

675

355

800

315

57

BESB31541EC2OD, outdoor

785

675

355

800

315

57

BESB31524EC2S

785

675

355

800

315

57

BESB40041EC2

895

775

390

800

400

73

BESB40041EC2OD, outdoor

895

775

390

800

400

73

BESB40041EC2S

895

775

390

800

400

73

BESB50041EC2

990

860

425

850

500

88

BESB50041EC2OD, outdoor

990

860

425

850

500

88

BESB50043EC

990

860

425

850

500

91

BESB50041EC2S

990

860

425

850

500

88

References Minimum airflow Max. airflow (m³/h)
BESB25041EC2

350

2260

BESB25041EC2OD, Outdoor

350

2260

BESB25041EC2S

350

 
BESB31541EC2

570

3590

BESB31541EC2OD, outdoor

570

3590

BESB31524EC2S    
BESB40041EC2

950

6000

BESB40041EC2OD, outdoor

950

6000

BESB40041EC2S    
BESB50041EC2

1180

7300

BESB50041EC2OD, outdoor

1180

7300

BESB50043EC

1330

10800

BESB50041EC2S    
References Frequency (Hz) Max. current (A) Voltage (V) Max. power Engine power (kW)
BESB25041EC2

50

1,2

1x230

 

0,18

BESB25041EC2OD, Outdoor

50

1,2

1x230

 

0,18

BESB25041EC2S  

1,2

 

0,17

0,18

BESB31541EC2

50

2,2

1x230

 

0,37

BESB31541EC2OD, outdoor

50

2,2

1x230

 

0,37

BESB31524EC2S          
BESB40041EC2

50

4,5

1x230

 

0,75

BESB40041EC2OD, outdoor

50

4,5

1x230

 

0,75

BESB40041EC2S          
BESB50041EC2

50

8,5

1x230

 

1,1

BESB50041EC2OD, outdoor

50

8,5

1x230

 

1,1

BESB50043EC

50

3,8

3x400

 

2,2

BESB50041EC2S          
References Ventilation energy class - Average climate
BESB25041EC2  
BESB25041EC2OD, Outdoor  
BESB25041EC2S

Ja

BESB31541EC2  
BESB31541EC2OD, outdoor  
BESB31524EC2S  
BESB40041EC2  
BESB40041EC2OD, outdoor  
BESB40041EC2S

Ja

BESB50041EC2  
BESB50041EC2OD, outdoor  
BESB50043EC  
BESB50041EC2S

Ja

BESB box fans are made from Aluzinc® AZ185 class C4 in accordance with EN/ISO12944-2 and insulated with 50-mm mineral wool.

As standard BESB can handle a gas temperature of up to 80°C, but in an OD version can withstand temperatures right up to 200 C.

The ventilator impeller is a B-impeller made from cast aluminium.

It has backward curved blades, thus ensuring low energy consumption and the further advantage that less dirt is attracted, with impaired impeller efficiency as a result.

The spigots on BESB have rubber gaskets, with a transition piece on the extract side specially developed for minimum pressure drop.

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

The BESB box fan is mounted with split hinges, which enable the door to be removed for installation and servicing, even in very confined conditions or for transport to difficult locations.

The BESB box fan is designed to transport air with an air humidity of less than 80% RH.

BESB is available in a special OD variant with a condensation outlet for air with over 80% RH.

If there are problems moving the BESB box fan in one piece, it may be ordered in a SPLIT version.

  • The box fan must be assembled by an approved EXHAUSTO fitter
  • The box fan must be tested before the fitter hands over the fan

Products and accessories references

  • BESB25041EC2
    BESB25041EC2
  • BESB25041EC2OD, Outdoor
    BESB25041EC2OD, Outdoor
  • BESB25041EC2S
    BESB25041EC2S
  • BESB31541EC2
    BESB31541EC2
  • BESB31541EC2OD, outdoor
    BESB31541EC2OD, outdoor
  • BESB31524EC2S
    BESB31524EC2S
  • BESB40041EC2
    BESB40041EC2
  • BESB40041EC2OD, outdoor
    BESB40041EC2OD, outdoor
  • BESB40041EC2S
    BESB40041EC2S
  • BESB50041EC2
    BESB50041EC2
  • BESB50041EC2OD, outdoor
    BESB50041EC2OD, outdoor
  • BESB50043EC
    BESB50043EC
  • BESB50041EC2S
    BESB50041EC2S

Documents

Showing 1 - y of document
  • BESB Split, assembly instructions
    Manuals
    2 MB
  • BESB - FSB Installation Guide
    Guides
    4 MB
  • BESB Version 2, installation and maintenance instructions
    Manuals
    3 MB
  • BESB, assembly of safety brackets
    Manuals
    355 KB

2 software