Filter box for wall inlet
Technical User Guide
604399 • 2021-08-27
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Filter box for wall inlet
2 Technical User Guide
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.
IMPORTANT!
Notes concerning alarm systems
Breakdowns, malfunctions or faulty settings may cause substantial damage and financial losses when regulat-
ing and controlling the climate in a livestock house. It is therefore essential to install a separate, independent
alarm system that monitors the house climate concurrently with the climate and production controller. According
to EU-directive No. 98/58/EU, an alarm system must be installed in all mechanically ventilated houses.
We would like to draw your attention to the fact that the product liability clause of general terms and conditions
of sale and delivery specifies that an alarm system must be installed.
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.
Filter box for wall inlet
1 Product description........................................................................................................................................4
2 Product survey ...............................................................................................................................................5
3 Mounting guide...............................................................................................................................................6
3.1 Recommended tools.................................................................................................................. 6
3.2 Remove door with fan ............................................................................................................... 8
3.3 Dimensions for marking template ............................................................................................ 8
3.4 Mounting filter box on wall .......................................................................................................8
3.5 Pointing..................................................................................................................................... 10
3.6 Mounting of door with fan....................................................................................................... 11
3.7 Mounting of skirt...................................................................................................................... 12
3.8 Mounting of filters.................................................................................................................... 12
4 Installation Guide .........................................................................................................................................13
4.1 Electrical connection............................................................................................................... 13
4.2 Pressure switch for filter box ................................................................................................. 13
4.3 Cable Plans and Circuit Diagrams ......................................................................................... 14
4.3.1 General information about circuit diagrams ............................................................................... 14
4.3.1.1 Color code.................................................................................................................................. 14
4.3.1.2 Power supply isolator................................................................................................................. 14
4.3.1.3 Letter Code ................................................................................................................................ 14
4.3.2 Cable plan.................................................................................................................................. 15
4.3.3 Circuit Diagram .......................................................................................................................... 15
5 Maintenance instructions ............................................................................................................................16
5.1 Cleaning.................................................................................................................................... 16
5.2 Recycling/Disposal .................................................................................................................. 16
6 Troubleshooting Instructions......................................................................................................................17
7 Technical data...............................................................................................................................................18
7.1 Dimensioned sketch ................................................................................................................ 19
7.1.1 Filter box .................................................................................................................................... 19
7.1.2 Pressure switch.......................................................................................................................... 19
Technical User Guide
Filter box for wall inlet
4 Technical User Guide
1 Product description
DA 1200
Wall
Fan
Pre-filter
Main filter
The filter box for wall inlet has been especially designed for use with the DA 1200 wall inlet series. In each filter
box an energy-efficient fan is mounted which presses the air through the filters and into the house by means of
positive pressure. The positive pressure in the livestock house minimizes the risk of unfiltered air entering the
house through leaks, doors, windows, etc.
The infection risk of airborne diseases such as PRRS, Mycoplasma, etc. is significantly reduced when the venti-
lation air is filtered. Two filters are installed in each filter box. A pre-filter (MERV 8/G4) and a main filter (MERV
15/F9 or MERV 16/E10).
The purpose of the pre-filter is to protect the main filter and it must be replaced after 6-12 months depending on
the conditions.
The main filter is made from fiberglass and efficiently re-
moves sources of infection from the air flow. The filter is de-
signed for use in farming applications, such as pig farms.
The rigid design of the filter and the pleated media package
ensure the supply of the required air quality when used in
ventilation systems in pig houses. The filter media repel wa-
ter, oil, hydrocarbons and salt, while the plastic frame is cor-
rosion resistant. The efficiency of the fiberglass media is in-
dependent of electrostatic charge and maintains its efficiency
over time, in contrast to electrostatically charged synthetic fil-
ters where efficiency decreases as they are in use in pig
houses. The main filter must be replaced approx. every third
year depending on the conditions.
The filter box may be installed in new houses or retrofitted in existing houses with DA 1200 or similar wall inlets.
Filter box for wall inlet
Technical User Guide 5
2 Product survey
431008 Filter box for Wall inlet, incl. MERV 15
Maximum air output of 1000 m3/h at a positive pressure of 5 Pa in the live-
stock house.
431009 Filter box for Wall inlet, incl. MERV 16
Maximum air output of 900 m3/h at a positive pressure of 5 Pa in the live-
stock house.
Is used to increase biosafety.
The filter box filtrates the incoming air from viral and bacterial diseases.
The filter box is designed for the DA 1200 wall inlet but can be used for wall
inlets with maximum outer measures of 625x625 mm.
Is delivered with mounting set and pressure switch which gives alarm at
pressure below 18-20 Pa.
Filter box for wall inlet
6 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.
3.1 Recommended tools
Item Description
Cordless drill
Screwdriver bits
Drill kit
Atomizer
Sealant gun
Hammer
Utility knife
Marker pen
Tape measure
Blind rivet tongs
Combination spanner kit
Screwdriver
Ladder
Socket wrench set
Filter box for wall inlet
Technical User Guide 7
Item Description
Spirit level
Try square
Filter box for wall inlet
8 Technical User Guide
3.2 Remove door with fan
To ease the installation of the filter box, the door with fan
must be removed before mounting on the wall. Save the
four screws and nuts for mounting the door again.
3.3 Dimensions for marking template
If several filter boxes are to be mounted it is an advan-
tage to make a template.
Make the template according to this drawing.
Dimensions in mm.
3.4 Mounting filter box on wall
Place the template and mark the 12 holes.
Drill the 12 holes with an 8 mm drill bit.
Filter box for wall inlet
Technical User Guide 9
Hammer the 12 wall dowels into the holes.
Mount the filter box on the wall using 12 screws.
Filter box for wall inlet
10 Technical User Guide
3.5 Pointing
SKOV A/S recommends Sikaflex AT Connection, one-component MS polymer or similar.
Put a joint edge on the inside of the filter box.
Filter box for wall inlet
Technical User Guide 11
3.6 Mounting of door with fan
Mount the door with fan on the filter box using the four
saved screws and nuts.
Mount ground wire.
Mount a carabiner on the door in each side.
Filter box for wall inlet
12 Technical User Guide
3.7 Mounting of skirt
Mount the skirt with the six rivets.
3.8 Mounting of filters
Mount the main filter with the louvers in vertical position.
Make sure that the arrow showing air flow is facing in-
ward on the pre-filter.
Mount the pre-filter with the louvers in vertical position.
Filter box for wall inlet
Technical User Guide 13
4 Installation Guide
4.1 Electrical connection
Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali-
fied personnel in compliance with the applicable national and international standard EN 60204-1
and any other EU standards that are applicable in Europe.
The installation of a power supply isolator is required for each motor and power supply to facilitate
voltage-free work on the electrical equipment. The power supply isolator is not included.
4.2 Pressure switch for filter box
Place the pressure switch (preset from the factory) next
to the filter box.
Lead the pressure switch tube 10 mm into the screw fit-
ting.
Fasten the pressure switch tube and lead it into the pres-
sure switch box.
A two-core cable is lead from the pressure switch box
through a connection box to a DOL 2400 input.
When using several pressure switches, they must be
connected in series to a DOL 2400 input.
Filter box for wall inlet
14 Technical User Guide
4.3 Cable Plans and Circuit Diagrams
4.3.1 General information about circuit diagrams
Symbols are in accordance with the IEC/EN 60617 standard. The classification of the ("letter codes") on the
symbols is in accordance with the IEC/EN 81346-2 standard. Reference designations are in accordance with
IEC/EN 81346-1:2001 structuring principles and reference designations. This standard indicates structured
methods for naming electrotechnical systems.
4.3.1.1 Color code
Letter Code Color Standard
BK Black
Color coding on wires are in accor-
dance with standard IEC 60757:
Letter codes to identify colors used
on drawings, diagrams, labelling,
etc.:
BN Brown
RD Red
OG Orange
YE Yellow
GN Green
BU Blue (incl. light blue)
VT Violet (purple red)
GY Grey (slate)
WH White
PK Pink
GD Gold
TQ Turquoise
SR Silver
GNYE Green-and-yellow
4.3.1.2 Power supply isolator
Power supply isolator
The installation of a power supply isolator is required for each motor and
motor control.
4.3.1.3 Letter Code
The letter codes used in accordance with standard IEC/EN61346-2.
-F -K -M -Q -S -T -W
Protective
equipment
RCCB / Initial
fuse Protective
motor switch
Controller
Contactor
Fan
Motor
Power supply
isolator
Switch Motor con-
troller
Cable
Filter box for wall inlet
Technical User Guide 15
4.3.2 Cable plan
Controller
Alarm system
Power supply
1x230 V
Filter box
Pressure switch
Power supply isolator
Connection box
4.3.3 Circuit Diagram
Filter box
Controller Alarm system
Power supply isolator
Wiring box
Pressure switch
Filter box for wall inlet
16 Technical User Guide
5 Maintenance instructions
Remember to shut off the fan at the isolator prior to maintenance and cleaning.
We recommend replacing the pre-filter every 6 months and the main filter every third year.
5.1 Cleaning
Clean the fan at regular intervals to allow unobstructed air passage, e.g. by means of compressed air.
To ensure sufficient air passage, exchange the pre-filters. If the air passage is still insufficient, the main filters
should also be exchanged.
Clean the product with a cloth that has been wrung out almost dry in water and avoid using:
• high-pressure cleaner
• solvents
• corrosive/caustic agents
5.2 Recycling/Disposal
Products suitable for recycling are marked with a pictogram.
It must be possible for customers to deliver the products to local collection sites/recycling stations in accordance
with local instructions. The recycling station will then arrange for further transport to a certified plant for reuse,
recovery and recycling.
Filter box for wall inlet
Technical User Guide 17
6 Troubleshooting Instructions
Remember to shut the fan off at the power supply isolator prior to troubleshooting.
Fault symptom Error Solution
Abnormal noise coming from
fan.
Faulty mounting. Check in accordance with the
document. Retighten if re-
quired.
Bearing noise. Replace the motor.
Vibrating fan.
Check whether fan blades are
defective, correctly assembled
or dirty.
Replace or clean.
Fan motor is not running.
Motor: Motor protection
switches off.
Check the size of the motor
protection, see section Techni-
cal data.
Replace motor protection,
change to correct size.
Check whether the fan motor
is blocked.
Remove the blocking.
Too high negative pressure in
the livestock house,
check the air inlets.
Power supply to the motor. Measure the supply voltage
going to the motor.
0-10 V signal. Measure the 0-10 V signal go-
ing to the motor.
Alarm from DOL 2400.
Too high pressure. Check the pressure switch and
the pressure switch tube.
Filter clogged. Replace or clean.
Filter box for wall inlet
18 Technical User Guide
7 Technical data
431008 Filter box
for wall inlet MERV 15
431009 Filter box
for wall inlet MERV 16
Electrical
Rated voltage V AC 230 +/- 10%
Operating voltage V AC 200 – 240
For supply voltages below the rated voltage range, a reduction of
the fan’s RPM may occur depending on the load and ambient
temperature.
RCD To be installed in accordance with applicable laws and stan-
dards.
Frequency Hz 50 / 60
Max. ballast fuse A 16
Max. power consumption
With 230 V AC power supply
A 0.72
Max. input power (P1) W 83
CosPhi [Φ] Factor 0.5
Regulation ability % 0-100
Interface
Inputs
Analog fan speed (yellow) V DC 0 – 10
Outputs
Voltage output (red) V DC 10 (1.1 mA)
Tarco (white) 1 pulse per revolution
Mechanical
Cable length (fan) m 0.65
Cable length (pressure
switch)
m 1.5
Fan output
Revolutions per minute RPM 2330
Max. counterpressure Pa 100
Max. air output at a positive
pressure of 5 Pa in the live-
stock house.
m3/h 1000 900
Testing body SKOV A/S
Environment
Temperature, operation °C - 25 to + 60
Start temperature °C - 25 to + 50
Storage temperature °C - 40 to + 80
Ambient humidity, operation % RH 10 - 95
Protection class IP Fan motor: IP 54
Shipment
Shipping weight filter box g 42800
Shipping weight filter g 9436
Shipping weight pressure
switch
g 650
Filter box for wall inlet
Technical User Guide 19
7.1 Dimensioned sketch
In mm.
7.1.1 Filter box
7.1.2 Pressure switch
90 125
120
604399 • 2021-08-27 • en-US • Made in Denmark
SKOV A/S • Hedelund 4 • Glyngøre • DK-7870 Roslev
Tel. +45 72 17 55 55 • www.skov.com • E-mail: [email protected]
/