BESB
Ventilation box fan
BESB box fans are low-energy fans with backward-curved B-wheels and sound-dampening insulation.
BESB is available in 7 sizes, with 9 capacities - BESB250, BESB315, BESB400, BESB500, BESB560, BESB630 (BESB631), and BESB710
All are delivered with measuring points for airflow measurement, except BESB250.
MOTORS:
All BESB box fans are equipped with EC motors. Get an overview of the individual sizes below.
TEMPERATURE:
BESB box fans can withstand temperatures up to 80 °C during normal operation.
Smoke Extract Fans
If you need a certified smoke extract fan, we refer to the FSB box fan, which is described under the FIRE PROTECTION product group.
BESB250-500:
> Can be ordered in an outdoor version (OD), which has the following characteristics.
> Temperature range - withstands hot air up to 200 °C
> Condensate drain for position A
BESB560-710:
> Always suitable for outdoor mounting
> Condensate drain is included, but not installed
Product advantages
- Low operating costs
- Longer service intervals
- Low noise level
- Easy access for service, due to service hatch
- Backward-curved blades
- Low energy consumption
| 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 |
| 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 | |
| BESB56043EC | |
| BESB63043EC | |
| BESB63143EC | |
| BESB71043EC |
| 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) | Overload protection | Engine power (kW) |
|---|---|---|---|---|---|---|---|---|
| BESB25041EC2 | 68,4 |
D |
64, N(2015) |
96,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,18 |
| BESB25041EC2OD, Outdoor | 68,4 |
D |
64, N(2015) |
96,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,18 |
| BESB25041EC2S | 68,4 |
D |
64, N(2015) |
96,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,18 |
| BESB31541EC2 | 69,0 |
D |
64, N(2015) |
92,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,37 |
| BESB31541EC2OD, outdoor | 69 |
D |
64, N(2015) |
92,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,37 |
| BESB31524EC2S | 69 |
D |
64, N(2015) |
92,8 |
EC motor with integral VSD |
1400 |
Integrated in motor control |
0,37 |
| BESB40041EC2 | 71,6 |
D |
64, N(2015) |
95 |
EC motor with integral VSD |
1435 |
Integrated in motor control |
0,75 |
| BESB40041EC2OD, outdoor | 71,6 |
D |
64, N(2015) |
95 |
EC motor with integral VSD |
1435 |
Integrated in motor control |
0,75 |
| BESB40041EC2S | 71,6 |
D |
64, N(2015) |
95 |
EC motor with integral VSD |
1435 |
Integrated in motor control |
0,75 |
| BESB50041EC2 | 71,5 |
D |
64, N(2015) |
89,6 |
EC motor with integral VSD |
1420 |
Integrated in motor control |
1,1 |
| BESB50041EC2OD, outdoor | 71,5 |
D |
64, N(2015) |
89,6 |
EC motor with integral VSD |
1420 |
Integrated in motor control |
1,1 |
| BESB50043EC | 74,6 |
D |
64, N(2015) |
89 |
EC motor with integral VSD |
1757 |
Integrated in motor control |
2,2 |
| 74,6 |
D |
64, N(2015) |
89 |
EC motor with integral VSD |
1757 |
Integrated in motor control |
2,2 |
|
| BESB50041EC2S | 71,5 |
D |
64, N(2015) |
89,6 |
EC motor with integral VSD |
1420 |
Integrated in motor control |
1,1 |
| BESB56043EC | 71,3 |
D |
64, N(2015) |
79,3 |
1650 |
4,1 |
||
| BESB63043EC | 70,8 |
D |
64, N(2015) |
76,6 |
1550 |
5,9 |
||
| BESB63143EC | 71,5 |
D |
64, N(2015) |
74,5 |
1850 |
11,1 |
||
| BESB71043EC | 72,6 |
D |
64, N(2015) |
77,6 |
1380 |
11,1 |
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°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.
| References | A (mm) | B (mm) | C (mm) | D (mm) | G (mm) | H (mm) | J (mm) | K (mm) | L (mm) | M (mm) | E Ø (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BESB25041EC2 | 785 |
625 |
325 |
195 |
800 |
350 |
480 |
185 |
125 |
60 |
250 |
52 |
| BESB25041EC2OD, Outdoor | 785 |
625 |
325 |
195 |
800 |
350 |
480 |
185 |
125 |
60 |
250 |
52 |
| BESB25041EC2S | 785 |
625 |
325 |
195 |
800 |
350 |
480 |
185 |
125 |
60 |
250 |
52 |
| BESB31541EC2 | 785 |
675 |
355 |
195 |
800 |
385 |
455 |
205 |
125 |
60 |
315 |
57 |
| BESB31541EC2OD, outdoor | 785 |
675 |
355 |
195 |
800 |
385 |
455 |
205 |
125 |
60 |
315 |
57 |
| BESB31524EC2S | 785 |
675 |
355 |
195 |
800 |
385 |
455 |
205 |
125 |
60 |
315 |
57 |
| BESB40041EC2 | 895 |
775 |
390 |
195 |
800 |
440 |
525 |
250 |
125 |
80 |
400 |
73 |
| BESB40041EC2OD, outdoor | 895 |
775 |
390 |
195 |
800 |
440 |
525 |
250 |
125 |
80 |
400 |
73 |
| BESB40041EC2S | 895 |
775 |
390 |
195 |
800 |
440 |
525 |
250 |
125 |
80 |
400 |
73 |
| BESB50041EC2 | 990 |
860 |
425 |
285 |
850 |
485 |
580 |
300 |
170 |
80 |
500 |
88 |
| BESB50041EC2OD, outdoor | 990 |
860 |
425 |
285 |
850 |
485 |
580 |
300 |
170 |
80 |
500 |
88 |
| BESB50043EC | 990 |
860 |
425 |
285 |
850 |
485 |
580 |
300 |
170 |
80 |
500 |
91 |
| 990 |
860 |
425 |
285 |
850 |
485 |
580 |
300 |
170 |
80 |
500 |
91 |
|
| BESB50041EC2S | 990 |
860 |
425 |
285 |
850 |
485 |
580 |
300 |
170 |
80 |
500 |
88 |
| BESB56043EC | 1120 |
960 |
455 |
277 |
1050 |
540 |
470 |
286 |
170 |
80 |
560 |
|
| BESB63043EC | 1255 |
1085 |
490 |
277 |
1100 |
600 |
525 |
320 |
170 |
80 |
630 |
|
| BESB63143EC | 1255 |
1085 |
490 |
295 |
1100 |
600 |
525 |
320 |
170 |
80 |
630 |
|
| BESB71043EC | 1395 |
1220 |
540 |
295 |
1150 |
670 |
580 |
355 |
170 |
80 |
710 |
| 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 |
| 1330 |
10800 |
|
| BESB50041EC2S | ||
| BESB56043EC | 1465 |
13600 |
| BESB63043EC | 1940 |
19100 |
| BESB63143EC | 1880 |
22500 |
| BESB71043EC | 2290 |
23300 |
| References | Voltage (V) | Frequency (Hz) | Max. current (A) | Engine power (kW) |
|---|---|---|---|---|
| BESB25041EC2 | 1x230 |
50 |
1,2 |
0,18 |
| BESB25041EC2OD, Outdoor | 1x230 |
50 |
1,2 |
0,18 |
| BESB25041EC2S | 1x230 |
50 |
1,2 |
0,18 |
| BESB31541EC2 | 1x230 |
50 |
2,2 |
0,37 |
| BESB31541EC2OD, outdoor | 1x230 |
50 |
2,2 |
0,37 |
| BESB31524EC2S | 1x230 |
50 |
2,2 |
0,37 |
| BESB40041EC2 | 1x230 |
50 |
4,5 |
0,75 |
| BESB40041EC2OD, outdoor | 1x230 |
50 |
4,5 |
0,75 |
| BESB40041EC2S | 1x230 |
50 |
4,5 |
0,75 |
| BESB50041EC2 | 1x230 |
50 |
8,5 |
1,1 |
| BESB50041EC2OD, outdoor | 1x230 |
50 |
8,5 |
1,1 |
| BESB50043EC | 3x400 |
50 |
3,8 |
2,2 |
| 3x400 |
50 |
3,8 |
2,2 |
|
| BESB50041EC2S | 1x230 |
50 |
8,5 |
1,1 |
| BESB56043EC | 3x400 |
50 |
6,8 |
4,1 |
| BESB63043EC | 3x400 |
50 |
9,1 |
5,9 |
| BESB63143EC | 3x400 |
50 |
15,4 |
11,1 |
| BESB71043EC | 3x400 |
50 |
12,5 |
11,1 |
| Ventilation energy class - Average climate |
|---|
| D |
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 fan wheel is a B-wheel. For BESB250, BESB315, BESB400, and BESB500, the wheel is made of cast aluminium. For BESB560, BESB630, BESB631, and BESB710, the wheel is made of steel.
It has backward-curved blades, which ensure low energy consumption, and also has the advantage that dirt does not easily get stuck and reduce the wheel's efficiency.
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 BESB250-500 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 with transporting the BESB box fans in one piece, they can be ordered as SPLIT execution.
- The box fans must be assembled by a fitter approved by EXHAUSTO
- The box fans must be tested before the fitter hands over the fan
BESB560, BESB630, BESB631 and BESB710 cannot be obtained as SPLIT
Products and accessories references
Documents
2 software
-
Product selection program for calculation of compact and modular units.
