Acoustically insulated (40 mm/88 kg/m³) centrifugal fan box
Application
BFA fans are used for ventilation in many applications where low noise levels have to be respected, such as offices, restaurants, hotels or others.
Composition
Casing procured from galvanised steel
Removable panel with clips for easy inspection of the motor
Isolation: high performance wool (88 kg/m³) with fireclass A1 according to DIN EN13501-1
Fan with backwards curved blades
Fan procured from galvanized steel, except 1BFA 125 E2 20 and BFA 160 E2 20 with steel layer and plastic blades
External rotor with maintenance-free ball bearing
Voltage: 230Vac 1 ph
Isolationclass F - protection classes:
BFA 125 E2 20 - BFA 200 E2 11: engine protection class IP33, IPX4 for the whole fan
BFA 355 E4 20 - BFA 400 E4 20: engine protection classIP44, IPX4 for the whole fan
BFA 450 E4 20 - BFA 500 E4 20: engine protection class IP54, IPX4 for the whole fan
Connection boxIP44 with turnbuckle
Thermische beveiliging:
BFA 125 E2 20 - BFA 160 E2 20: Temperature operated switch mechanism with manual reboot, connected on the inside
BFA 200 E2 11 - BFA 400 E4 20: Temperature operated switch mechanism with manual reboot, connected on the inside
BFA 450 E4 20 - BFA 500 E4 20:Temperature operated switch mechanism with manual reboot, to be connected externally by third party
Accessories
Roof, type RD-BFA
Auto transformer, type TSC-1
Electronic speed controller, type ESC
Flexible connection, type BMK
Text for tender
The centrifugal fan box shall be acoustically insulated with 40 mm rock wool fibrewith a density of minimum 88kg/m³. The closed motor shall be of the direct driven type, IP44, insulation class F, with thermal protection and voltage controllable with auto transformer
Cairox Type BFA
The centrifugal fan box shall be acoustically insulated with 40 mm rock wool fibrewith a density of minimum 88kg/m³. The closed motor shall be of the direct driven type, IP44, insulation class F, with thermal protection and voltage controllable with auto transformer
Cairox Type BFA
Selection curves
Selection curves
Air performance data
Q [m³/h]
50 Pa
100 Pa
150 Pa
200 Pa
250 Pa
300 Pa
400 Pa
500 Pa
BFA 125 E2 20
307
283
243
211
170
130
-
-
BFA 160 E2 20
356
310
269
226
173
123
-
-
BFA 200 E2 11
675
614
550
485
422
361
229
-
BFA 355 E4 20
1982
1786
1640
1422
1253
1017
491
-
BFA 400 E4 20
2208
1977
1750
1532
1323
1046
462
-
BFA 450 E4 20
3403
3197
2978
2709
2413
2164
1443
800
BFA 500 E4 20
3639
3375
3126
2830
2552
2275
1497
481
Technical data
U [V]
P [W]
I [A]
SCT
SCE**
ŋt [%]
tm [°C]
tu [°C]
to [°C]
n [rpm]
Lwa [dB (A)]
Lwa 5
Lwa 6
Lwa 2
BFA 125 E2 20
230
50
0.3
TSC-1-15
ESC-15
24.6
70
70
-25
2386
55
68
54
BFA 160 E2 20
230
49
0.3
TSC-1-15
ESC-15
25.5
70
70
-25
2420
57
71
54
BFA 200 E2 11
230
100
0.5
TSC-1-15
ESC-15
29.1
80
80
-25
2480
64
76
59
BFA 355 E4 20
230
237
1.3
TSC-1-15
ESC-15
38.5
45
45
-25
1368
66
75
61
BFA 400 E4 20
230
242
1.3
TSC-1-15
ESC-15
39.5
40
40
-25
1370
67
76
62
BFA 450 E4 20
230
451
2.6
TSC-1-40
ESC-30
41.3
65
65
-25
1374
73
82
67
BFA 500 E4 20
230
466
2.7
TSC-1-40
ESC-30
41.2
65
65
-25
1382
73
82
67
SCT = Transformer speed controller
SCE = Electronic speed controller
** Caution: an electronic controller can produce a magnetic noise
ŋt = Maximum total efficiency
Tm = Maximum air temperature
Tu = Maximum ambient temperature
To = Minimum operating temperature
Lwa 2 = Casing sound power level
Lwa 5 = Sound power level @inlet
Lwa 6 = Sound power level @outlet
The sound power levels are measured according to DIN 45635 part 2 & 38