IMO BKF
Installation
8 BKF 16.08.2021
Serially equipped with B5 electric motor 3x400V~, 50Hz, IP 55, insulation class F, with built-in PTC. On request, the fan
can be equipped with electric motor intended for other voltage/frequency. Electric motor outside air stream is self
cooled.
Electric motor
Connection
Efficiency class, serially:
Single speed (4 pole, 6 pole, 8 pole)
Y or D
IE2 or IE3
Two speed (4-6, 6-8, 8-12)
Y/Y
IE1
Two speed (4-8, 6-12) Dahlander
YY/Y
IE1
5.1 Technical data
Size
BKF
Max. synchron
RPM at 50/60 Hz
Max. nominal
power**
Impeller
diameter
Max.
weight**
Max.
sound power
level inlet**
Max.
sound power
level outlet**
min-1
kW
mm
kg
dB(A)
dB(A)
315
1500
0,37
325
50
74
78
355
1500
0,37
365
52
73
76
400
1500
0,55
410
69
79
81
450
1500
0,75
454
71
79
83
500
1500
1,5
520
97
83
88
560
1500
2,2
570
102
87
89
630
1500
5,5
650
161
93
98
800
1000/1200
5,5
820
200
95
97
* Motor data (input power P1, current, RPM) and data of the fan are visible on the name plate and on the test
protocol.
** at 50 Hz, single speed motor
5.2 Dimensions
Please see Appendix 1 or www.systemair.com.
6 Installation
6.1 Safety information
WARNING
Hazard from falling parts!
Check the wall/roof before installation for load capacity/strength.
When selecting the hoisting device and fitting material observe the weight, tendency to vibrations and
shear forces (weight information on the nameplate).
CAUTION
Danger from cutting edges!
At installation works wear protective working gloves.
6.2 Preconditions for installation
BKF must be installed outside fire zone.
Observe load capacity and stiffness of the wall/roof.
Installation positions see Appendix 2. Lifting lugs see Appendix 1.
Extremely wind or turbulence exposed places should be avoided, if roof mounted.
During installation the site must be protected from dust, moisture and weather influences.