Skov BF 50 Manual

BF 50 Wall Fans
Technical User Guide
604383 • 2021-11-26
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BF 50 Wall Fans
Technical User Guide 3
Product and Documentation Changes
SKOV A/S reserves the right to change this document and the product herein described without further notice.
In case of doubt, please contact SKOV A/S.
The date of change appears from the front and back pages.
Note
• All rights belong to SKOV A/S. No part of this manual may be reproduced in any manner whatsoever without
the expressed written permission of SKOV A/S in each case.
• All reasonable efforts have been made to ensure the accuracy of the information contained in this manual.
Should any mistakes or imprecise information occur in spite of this, SKOV A/S would appreciate being noti-
fied thereof.
• Irrespective of the above, SKOV A/S shall not accept any liability with regard to loss or damage caused or
alleged to be caused by reliance on any information contained herein.
• Copyright by SKOV A/S.

BF 50 Wall Fans
Technical User Guide
1 Product description........................................................................................................................................8
2 Product survey ...............................................................................................................................................9
2.1 BF 50 wall fans ........................................................................................................................ 10
2.1.1 Type key .................................................................................................................................... 10
2.2 Accessories.............................................................................................................................. 13
3 Mounting guide.............................................................................................................................................16
3.1 Recommended tools................................................................................................................ 16
3.2 Placement of BF 50 ................................................................................................................. 18
3.3 Preparing hole in wall.............................................................................................................. 18
3.3.1 Necessary space for BF 50 without LPC motor controller ......................................................... 18
3.3.2 Necessary space for BF 50 with LPC motor controller .............................................................. 18
3.3.3 Necessary space for BF 50 without cone .................................................................................. 19
3.3.4 Necessary space for BF 50 wth air shutter ................................................................................ 19
3.3.5 Measurements for square hole in wall ....................................................................................... 20
3.3.6 Measurements for square hole in wall with cone ....................................................................... 21
3.4 Measure and saw out the holes.............................................................................................. 22
3.5 Drainage holes ......................................................................................................................... 23
3.6 Mounting in wall....................................................................................................................... 24
3.6.1 Mounting with four brackets ....................................................................................................... 25
3.6.2 Mounting of four angle bars ....................................................................................................... 26
3.6.3 Mounting in wooden frame......................................................................................................... 27
3.6.4 Foaming ..................................................................................................................................... 28
3.6.5 Pointing ...................................................................................................................................... 31
3.7 Removing the transport bracket............................................................................................. 32
3.8 Mounting of inside safety net ................................................................................................. 33
3.9 Mounting of air controlled shutter .........................................................................................34
3.9.1 Outside air controlled shutter ..................................................................................................... 35
3.9.2 Inside air controlled shutter........................................................................................................ 36
3.10 Manual opening of motor controlled shutter ........................................................................37
3.11 Mounting of accessories......................................................................................................... 40
3.11.1 Cone .......................................................................................................................................... 40
3.11.2 Outside safety net ...................................................................................................................... 41
3.11.2.1 Without cone .............................................................................................................................. 41
3.11.2.2 With cone ................................................................................................................................... 42
3.11.3 Insulation plate........................................................................................................................... 43
3.11.4 Shading kit ................................................................................................................................. 44
3.11.5 Light trap .................................................................................................................................... 46
4 Installation guide ..........................................................................................................................................47
4.1 Electrical connection............................................................................................................... 47
4.1.1 Disclaimer at retrofitting fans ..................................................................................................... 47
4.1.2 cUL............................................................................................................................................. 47
4.1.3 Mains supply dimensioning regarding harmonic distortion ........................................................ 47
4.1.4 Cabling to connection box and LPC motor controller................................................................. 48
4.1.5 Cabeling and placement of LPC motor controller ...................................................................... 48
4.1.6 Connection in the motor controller ............................................................................................. 49
4.1.6.1 Terminals for power supply........................................................................................................ 49
4.1.6.2 Terminals for power supply of fan.............................................................................................. 50
4.1.6.3 Signal terminals ......................................................................................................................... 50
4.1.6.4 Terminals on relay module......................................................................................................... 50
4.1.7 LED indication on the motor controller....................................................................................... 51
4.1.8 Alarms........................................................................................................................................ 51
4.1.9 Emergency opening for BF 50 actuator – house controller........................................................ 52
4.1.9.1 Fan active at power failure......................................................................................................... 52
4.1.9.2 Fan not active at power failure................................................................................................... 53

BF 50 Wall Fans
4.1.10 Connection in the actuator ......................................................................................................... 54
4.1.10.1 BF 50 LPC actuator time-controlled........................................................................................... 54
4.1.10.2 BF 50 LPC actuator stepless ..................................................................................................... 54
4.1.10.3 BF 50 ON/OFF actuator............................................................................................................. 54
4.1.11 Connection of extra 24 V power supply ..................................................................................... 55
4.1.12 Cable plans and circuit diagrams............................................................................................... 56
4.1.12.1 General information about circuit diagrams ............................................................................... 56
4.1.12.1.1 Color code.................................................................................................................................. 56
4.1.12.1.2 Power supply isolator................................................................................................................. 56
4.1.12.1.3 Letter Code ................................................................................................................................ 56
4.1.13 Circuit diagram for OFF/AUTO/ON switch ................................................................................. 57
4.1.13.1 BF 50 LPC ................................................................................................................................. 57
4.1.13.2 BF 50 ON/OFF........................................................................................................................... 58
4.1.14 Circuit diagram for emergency opening ..................................................................................... 59
4.1.14.1 BF 50 LPC ................................................................................................................................. 59
4.1.14.2 BF 50 ON/OFF........................................................................................................................... 59
4.1.15 BF 50 LPC with reverse (1x230 V) ............................................................................................ 60
4.1.15.1 Cable plan.................................................................................................................................. 60
4.1.15.2 Circuit diagram........................................................................................................................... 60
4.1.16 BF 50 LPC with alarm relay (1x230 V)....................................................................................... 61
4.1.16.1 Cable plan.................................................................................................................................. 61
4.1.16.2 Circuit diagram........................................................................................................................... 61
4.1.17 BF 50 LPC 1x230 V variable ON/OFF (435406) ....................................................................... 62
4.1.17.1 Cable plan.................................................................................................................................. 62
4.1.17.2 Terminals in LPC 1x230 V fan ................................................................................................... 62
4.1.17.3 Circuit diagram........................................................................................................................... 63
4.1.18 BF 50 LPC 1x230 V stepless (435381)...................................................................................... 64
4.1.18.1 Cable plan.................................................................................................................................. 64
4.1.18.2 Terminals in LPC 1x230 V fan ................................................................................................... 64
4.1.18.3 Circuit diagram........................................................................................................................... 65
4.1.19 BF 50 LPC 3x400 V variable ON/OFF (435405/435408)........................................................... 66
4.1.19.1 Cable plan.................................................................................................................................. 66
4.1.19.2 Terminals in LPC 3x400 V fan ................................................................................................... 66
4.1.19.3 Circuit diagram........................................................................................................................... 67
4.1.20 BF 50 LPC 3x400 V with actuator – stepless (435409/435382) ................................................ 68
4.1.20.1 Cable plan.................................................................................................................................. 68
4.1.20.2 Terminals in LPC 3x400 V fan ................................................................................................... 68
4.1.20.3 Circuit diagram........................................................................................................................... 69
4.1.21 BF 50 LPC 3x230 V variable ON/OFF (435407)........................................................................ 70
4.1.21.1 Cable plan.................................................................................................................................. 70
4.1.21.2 Terminals in LPC 3x230 V fan ................................................................................................... 70
4.1.21.3 Circuit diagram........................................................................................................................... 71
4.1.22 BF 50 LPC 3x230 V stepless (435384)...................................................................................... 72
4.1.22.1 Cable plan.................................................................................................................................. 72
4.1.22.2 Terminals in LPC 3x230 V fan ................................................................................................... 72
4.1.22.3 Circuit diagram........................................................................................................................... 73
4.1.23 BF 50 EL ON/OFF 1x230 V (435385/435387)........................................................................... 74
4.1.23.1 Cable plan.................................................................................................................................. 74
4.1.23.2 Terminals in ON/OFF 1 x 230 V fan........................................................................................... 74
4.1.23.3 ON/OFF actuator control box..................................................................................................... 75
4.1.23.4 Circuit diagram........................................................................................................................... 75
4.1.24 BF 50 EL ON/OFF 3x400 V (435388)........................................................................................ 76
4.1.24.1 Cable plan.................................................................................................................................. 76
4.1.24.2 Terminals in ON/OFF 3x400 V fan............................................................................................. 76
4.1.24.3 ON/OFF actuator control box..................................................................................................... 77
4.1.24.4 Circuit diagram........................................................................................................................... 77
4.1.25 BF 50 EL ON/OFF 3x400 V with thermal cutout (435404)......................................................... 78
4.1.25.1 Cable plan.................................................................................................................................. 78
4.1.25.2 Terminals in ON/OFF 3x400 V fan with thermal cutout ............................................................. 78
4.1.25.3 ON/OFF actuator control box..................................................................................................... 79
4.1.25.4 Circuit diagram........................................................................................................................... 79
Technical User Guide

BF 50 Wall Fans
Technical User Guide
4.1.26 BF 50 EL ON/OFF 3x230 V (435391)........................................................................................ 80
4.1.26.1 Cable plan.................................................................................................................................. 80
4.1.26.2 Terminals in ON/OFF 3x230 V fan............................................................................................. 80
4.1.26.3 ON/OFF actuator control box..................................................................................................... 81
4.1.26.4 Circuit diagram........................................................................................................................... 81
4.1.27 BF 50 AIR ON/OFF 1x230 V (435400/435401) ......................................................................... 82
4.1.27.1 Cable plan.................................................................................................................................. 82
4.1.27.2 Terminals in ON/OFF 1 x 230 V fan........................................................................................... 82
4.1.27.3 Circuit diagram........................................................................................................................... 83
4.1.28 BF 50 AIR ON/OFF 3x400 V (435402/435410) ......................................................................... 84
4.1.28.1 Cable plan.................................................................................................................................. 84
4.1.28.2 Terminals in ON/OFF 3x400 V fan............................................................................................. 84
4.1.28.3 Circuit diagram........................................................................................................................... 85
4.1.29 BF 50 AIR ON/OFF 3x400 V with thermal cutout (435441) ....................................................... 86
4.1.29.1 Cable plan.................................................................................................................................. 86
4.1.29.2 Terminals in ON/OFF 3x400 V fan with thermal cutout ............................................................. 86
4.1.29.3 Circuit diagram........................................................................................................................... 87
4.1.30 BF 50 AIR ON/OFF 3x230 V (435403) ...................................................................................... 88
4.1.30.1 Cable plan.................................................................................................................................. 88
4.1.30.2 Terminals in ON/OFF 3x230 V fan............................................................................................. 88
4.1.30.3 Circuit Diagram .......................................................................................................................... 89
5 Maintenance instructions ............................................................................................................................90
5.1 Cleaning.................................................................................................................................... 90
5.1.1 Fan............................................................................................................................................. 90
5.1.2 Motor controller .......................................................................................................................... 90
5.2 Recycling/Disposal .................................................................................................................. 90
6 Troubleshooting instructions......................................................................................................................91
7 Technical data...............................................................................................................................................93
7.1 BF 50 LPC 1x230 V................................................................................................................... 93
7.1.1 ErP/Ecodesign BF 50 LPC 1x230 V .......................................................................................... 95
7.2 BF 50 LPC 3x400 V................................................................................................................... 96
7.2.1 ErP/Ecodesign BF 50 LPC 3x400 V .......................................................................................... 98
7.3 BF 50 LPC 3x230 V................................................................................................................... 99
7.3.1 ErP/Ecodesign BF 50 LPC 3x230 V ........................................................................................ 101
7.4 BF 50 ON/OFF EL 1x230 V..................................................................................................... 102
7.4.1 ErP/Ecodesign BF 50 ON/OFF EL 1x230 V ............................................................................ 103
7.5 BF 50 ON/OFF EL 3x400 V..................................................................................................... 104
7.5.1 ErP/Ecodesign BF 50 ON/OFF EL 3x400 V ............................................................................ 105
7.6 BF 50 ON/OFF EL 3x230 V/3x200 V ...................................................................................... 106
7.6.1 ErP/Ecodesign BF 50 ON/OFF EL 3x230 V ............................................................................ 107
7.7 BF 50 ON/OFF AIR 1x230 V ................................................................................................... 108
7.7.1 ErP/Ecodesign BF 50 ON/OFF AIR 1x230 V........................................................................... 109
7.8 BF 50 ON/OFF AIR 3x400 V ................................................................................................... 110
7.8.1 ErP/Ecodesign BF 50 ON/OFF AIR 3x400 V........................................................................... 112
7.9 BF 50 ON/OFF AIR 3x230 V/3x200 V..................................................................................... 113
7.9.1 ErP/Ecodesign BF 50 ON/OFF AIR 3x230 V........................................................................... 114
7.10 Actuators ................................................................................................................................ 115
7.11 Metal and plastic parts .......................................................................................................... 116
7.12 Light traps .............................................................................................................................. 117
7.13 Number of wall fans in a container ...................................................................................... 118
8 Dimensioned sketch...................................................................................................................................119
8.1 BF 50 ...................................................................................................................................... 119

BF 50 Wall Fans
8.2 LPC motor controller ............................................................................................................. 120
8.3 Light trap ................................................................................................................................ 121
8.4 Outside safety net.................................................................................................................. 121
Technical User Guide

BF 50 Wall Fans
8 Technical User Guide
1 Product description
BF 50 is a direct driven corrosion-free wall fan.
BF 50 is available with air controlled and motor controlled shutters.
The fan is available in several different versions focusing on low power consumption, as well as standard ver-
sions.
BF 50 can be mounted using a cone for optimal air output and reduced power consumption.
BF 50 is specially designed for harsh livestock house environments. This applies to both climatic and electrical
influences.

BF 50 Wall Fans
Technical User Guide 9
2 Product survey

BF 50 Wall Fans
10 Technical User Guide
2.1 BF 50 wall fans
2.1.1 Type key
BF 50 ON/OFF EL HF 400V3 50Hz 1.5hp TH
Fan name
BFBlue fan
Fan size
Impeller diameter in inches” 50
Fan type
AC fan
LPC fan
ON/OFF
LPC
Shutter type
Motor controlled
Air controlled
ON/OFF
Stepless 0-100%
EL
AIR
ON/OFF
VAR
Fan characteristics
High flow
Low energy
HF
LE
Rated voltage
3x400 V AC
3x230 V AC
1x230 V AC
400V3
230V3
230V1
Supply frequency
50 Hz and 60 Hz
50 Hz
60 Hz
50/60Hz
50Hz
60Hz
Horsepower / motor performance
hp
1.5
Thermal cutout
TH
Thermal cutout
435406 BF 50 LPC ON/OFF LE 230V1 50/60Hz
Fan control method - variable ON/OFF.
435381 BF 50 LPC VAR LE 230V1 50/60Hz
Fan control method - stepless.
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
LPC motor controller
PM motor 1,5 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435406 and 435381 should not be used for negative pressure higher than
80 Pa.

BF 50 Wall Fans
Technical User Guide 11
435405 BF 50 LPC ON/OFF HF 400V3 50/60Hz
435408 BF 50 LPC ON/OFF LE 400V3 50/60Hz
Fan control method - variable ON/OFF.
435409 BF 50 LPC VAR HF 400V3 50/60Hz
435382 BF 50 LPC VAR LE 400V3 50/60Hz
Fan control method - stepless.
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
LPC motor controller
PM motor 1,5 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435405 and 435409 should not be used for negative pressure higher than
100 Pa.
435408 and 435382 should not be used for negative pressure higher than
80 Pa.
435407 BF 50 LPC ON/OFF LE 230V3 50/60Hz
Fan control method - variable ON/OFF.
435384 BF 50 LPC VAR LE 230V3 50/60Hz
Fan control method - stepless.
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
LPC motor controller
PM motor 1,5 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435407 and 435384 should not be used for negative pressure higher than
80 Pa.
435385 BF 50 ON/OFF EL 230V1 1.5Hp 50Hz
435387 BF 50 ON/OFF EL 230V1 1.5Hp 60Hz
Fan control method - ON/OFF
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
AC motor 1x230 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435385 should not be used for negative pressure higher than 80 Pa.
435387 should not be used for negative pressure higher than 100 Pa.

BF 50 Wall Fans
12 Technical User Guide
435388 BF 50 ON/OFF EL 400V3 1.5Hp 50Hz
435404 BF 50 ON/OFF EL 400V3 1.5Hp 50Hz TH
Fan control method - ON/OFF
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
AC motor 3x400 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435388 and 435404 should not be used for negative pressure higher than
80 Pa.
435391 BF 50 ON/OFF EL 230V3 1.5Hp 60Hz
Fan control method - ON/OFF
Safety net outside must be mounted to comply with CE marking, in coun-
tries where this is required.
AC motor 3x230 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
ErP 2015 approved.
435391 should not be used for negative pressure higher than 90 Pa.
435400 BF 50 ON/OFF AIR 230V1 1.5Hp 50Hz
435401 BF 50 ON/OFF AIR 230V1 1.5Hp 60Hz
Fan control method - ON/OFF
Safety net outside or motor controlled shutter must be mounted to comply
with CE marking, in countries where this is required.
AC motor 1x230 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
The shutter system is supplied as knock down.
ErP 2015 approved.
Insulation plate or light trap cannot be immediately used if the air controlled
shutter is mounted inside. If this solution is required, a frame for mounting
insulation plate or light trap must be established. Such a frame is not sup-
plied by SKOV but must be produced locally.
435400 should not be used for negative pressure higher than 80 Pa.
435401 should not be used for negative pressure higher than 100 Pa.

BF 50 Wall Fans
Technical User Guide 13
435402 BF 50 ON/OFF AIR 400V3 1.5Hp 50Hz
435441 BF 50 ON/OFF AIR 400V3 1.5Hp 50Hz TH
435410 BF 50 ON/OFF AIR 400V3 1.5Hp 60Hz
Fan control method - ON/OFF
Safety net outside or motor controlled shutter must be mounted to comply
with CE marking, in countries where this is required.
AC motor 3x400 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
The shutter system is supplied as knock down.
ErP 2015 approved.
Insulation plate or light trap cannot be immediately used if the air controlled
shutter is mounted inside. If this solution is required, a frame for mounting
insulation plate or light trap must be established. Such a frame is not sup-
plied by SKOV but must be produced locally.
435402 and 435441 should not be used for negative pressure higher than
80 Pa.
435410 should not be used for negative pressure higher than 100 Pa.
435403 BF 50 ON/OFF AIR 230V3 1.5Hp 60Hz
Fan control method - ON/OFF
Safety net outside or motor controlled shutter must be mounted to comply
with CE marking, in countries where this is required.
AC motor 3x230 V 1,2 kW.
0,7 m motor cable.
Is supplied assembled.
The shutter system is supplied as knock down.
ErP 2015 approved.
Insulation plate or light trap cannot be immediately used if the air controlled
shutter is mounted inside. If this solution is required, a frame for mounting
insulation plate or light trap must be established. Such a frame is not sup-
plied by SKOV but must be produced locally.
435403 should not be used for negative pressure higher than 90 Pa.
2.2 Accessories
435397 BF 50 safety net outside wo/cone, A2
435398 BF 50 safety net outside wo/cone, galv
The outside safety net is used on BF 50 without cone where extra safety is
required.
Supplied with mounting parts.
One for each fan.

BF 50 Wall Fans
14 Technical User Guide
435395 BF 50 cone
The cone is used for ensuring better performance and energy efficiency.
Supplied with mounting parts.
1 per wall fan.
435396 BF 50 safety net outside for cone, A2
The outside safety net for cone is used where extra safety is required.
Supplied with mounting parts.
1 per wall fan.
435998 BF 50 insulation plate
The insulation plate is used for mounting on a BF 50 wall fan where extra
insulation is necessary.
Used to avoid problems with condensation and cold air down draft, espe-
cially during the winter.
Insulation plates should always be used on all wall fans if dimensioned out-
side temperatures are below 0 °C.
Insulation plate cannot be immediately used, if the air controlled shutter is
mounted inside. If this solution is required, a frame for mounting insulation
plate must be established. Such a frame is not supplied by SKOV but must
be produced locally.
The insulation plate is mounted and removed with only one handle.
H x W x D: 1380 x 1380 x 29 mm.
Includes various mounting parts.
1 per wall fan.
435442 50" shading kit for wall fan
The shading kit is used for light reduction when using insulation plate or an-
other type of plate.
It reduces the light from outside.
The shading kit contains mounting parts for mounting on plate and wall fan.
At an angle of 60 degrees measured between the fan and plate, the air out-
put will be reduced by approx. 5%
The shading kit can be used on all sizes of wall fans, provided the plate is
square.
1 per wall fan.

BF 50 Wall Fans
Technical User Guide 15
435156 50" light trap brown out
Used if dimming is required in the livestock house.
Light reduction factor 175.000:1.
The light trap reduces the air output of the fan without cone by approx. 15
% at 0-70 Pa pressure difference.
The light trap reduces the air output of the fan with cone by approx. 18 % at
0-70 Pa pressure difference.
Supplied as an unassembled unit incl. brackets.
1 per wall fan.
435158 50" light trap black out
Used if a large amount of dimming is required in the livestock house.
Light reduction factor 1.300.000:1.
The light trap reduces the air output of the fan without cone by approx. 31
% at 0-70 Pa pressure difference.
The light trap reduces the air output of the fan with cone by approx. 35 % at
0-70 Pa pressure difference.
Supplied as an unassembled unit incl. brackets.
1 per wall fan
445076 LPC-2 relay module
Used for mounting in motor controller, if an alarm output is required or re-
versing of fan is required.
1 x potential free output relay 1 A, 30 V DC/24 V AC.
1 x digital input.

BF 50 Wall Fans
16 Technical User Guide
3 Mounting guide
Check that the parts ordered are present and undamaged before starting work. Please read through the entire
guide before starting assembly and fitting.
If the BF 50 is installed in areas with risk of ice/snow slide, precautions must be made to
avoid damage to the BF 50.
3.1 Recommended tools
A list of the recommended tools for mounting purposes can be seen below.
Item Description
Cordless drill
Screwdriver bits
Drill kit
Atomizer
Sealant gun
Hammer
Utility knife
Wedge
Marker pen
Torque wrench
Tape measure
Combination spanner kit
Screwdriver

BF 50 Wall Fans
Technical User Guide 17
Item Description
Foam gun
Ladder
Jigsaw
Socket wrench set
Spirit level
Try square

BF 50 Wall Fans
18 Technical User Guide
3.2 Placement of BF 50
BF 50 must be placed in the livestock house according to the drawing supplied. Contact SKOV A/S if major
changes are made.
Check that all BF 50 can be placed freely in relation to other housing equipment upon agreement with the client.
Place the insulation of the brickwork all the way in against the BF 50 and all the way round (as in other building
constructions). This way you prevent a cold bridge along the side of BF 50 from being formed.
3.3 Preparing hole in wall
3.3.1 Necessary space for BF 50 without LPC motor controller
(B)
(C)
(D)
(E)
(A)
There must be a minimum of (A) space inside the live-
stock house for the wall fan.
There must be minimum of (B) of space including the
wall thickness outside the livestock house for the wall
fan.
Wall thickness (C).
The recommended space in front of the cone is (D).
Recommended installation height from floor is mini-
mum (E) in order to ensure space for dung removal.
3.3.2 Necessary space for BF 50 with LPC motor controller
(B)
(C)
(D)
(E)
(A)
There must be a minimum of (A) space inside the live-
stock house for the wall fan.
There must be minimum of (B) of space including the
wall thickness outside the livestock house for the wall
fan.
Wall thickness (C).
The recommended space in front of the cone is (D).
Recommended installation height from floor is mini-
mum (E) in order to ensure space for dung removal.

BF 50 Wall Fans
Technical User Guide 19
3.3.3 Necessary space for BF 50 without cone
(B)
(C) (E)
(A)
(D)
There must be a minimum of (A) space inside the live-
stock house for the wall fan.
There must be minimum of (B) of space including the
wall thickness outside the livestock house for the wall
fan.
Wall thickness (C).
The recommended space in front of the cone is (D).
Recommended installation height from floor is mini-
mum (E) in order to ensure space for dung removal.
3.3.4 Necessary space for BF 50 wth air shutter
(B)
(C) (E)
(A)
(D)
Air shutter inside.
There must be a minimum of (A) space inside the live-
stock house for the wall fan.
There must be minimum of (B) of space including the
wall thickness outside the livestock house for the wall
fan.
Wall thickness (C).
The recommended space in front of the cone is (D).
Recommended installation height from floor is mini-
mum (E) in order to ensure space for dung removal.
(B)
(C) (E)
(A)
(D)
Air shutter outside.
There must be a minimum of (A) space inside the live-
stock house for the wall fan.
There must be minimum of (B) of space including the
wall thickness outside the livestock house for the wall
fan.
Wall thickness (C).
The recommended space in front of the cone is (D).
Recommended installation height from floor is mini-
mum (E) in order to ensure space for dung removal.

BF 50 Wall Fans
20 Technical User Guide
3.3.5 Measurements for square hole in wall
The dimensions below are given in mm .
Recommended measurements for individual mounting of BF 50 wall fan.
(A) Minimum distance is 550 mm, when mounting the LPC motor controller above BF 50.
(B) Minimum distance is 300 mm, when mounting the LPC motor controller between BF 50.
(A)
(B)
Minimum distance from BF 50 to wall, floor and ceiling