Skov DA 1200 Wall Inlet Installation instructions manual

2020.06.26 • 612321
DA 1200 Wall Inlet
Mounting Guide
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Product and Documentation Changes
SKOV A/S reserves the right to change this maual and the product described herein without further notice.
In case of doubt, please contact SKOV A/S.
Date of change appears from the back page.
Note
•All rights reserved. No part of this manual may be reproduced in any manner whatsoever
without the express written permission from SKOV A/S.
•SKOV A/S has made all reasonable efforts 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 notified thereof
•Irrespective of the above, SKOV A/S shall not have any liability with respect to loss or
damage caused or alleged to be caused by reliance on any information contained herein
•Copyright 2013 by SKOV A/S.
Check the product as regards defects or damages (e.g. transport damages) prior to initial operation. In case
of defect or damage, please contact SKOV A/S or the nearest distributor.

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PRODUCT DESCRIPTION 4
PRODUCT SURVEY 5
1General Drawing of DA 1200 Wall Inlet........................................................... 5
MOUNTING GUIDE 11
2Recommended Tools..................................................................................... 11
2.1 Mounting of sandwich screws..................................................................................12
3Wall Inlet Positioning..................................................................................... 12
4Installation in wall........................................................................................... 12
4.1 Installation in an existing wall or element ...............................................................13
4.2 Building-in the Inlet...................................................................................................13
4.3 Modular System.........................................................................................................15
5Mounting the Regulation Set......................................................................... 16
5.1 Regulation Set with Universal AIC ...........................................................................16
5.1.1 Check the position of the string at advanced inlet control ...........................................................19
5.1.2 Adjustment of wall inlets...............................................................................................................20
5.2 Regulation Set Without Universal AIC.....................................................................21
6Mounting Other Accessories......................................................................... 22
6.1 Extension Piece.........................................................................................................22
6.2 Air Direction Plate .....................................................................................................23
6.3 Baffle Plate.................................................................................................................25
6.4 Regulation set for two Inlets.....................................................................................25
6.4.1 Mounting of Regulation Set for Modular System .........................................................................26
6.5 LPV Door set for Pull rod..........................................................................................26
6.6 Door set for Wire Rope Drive....................................................................................27
TECHNICAL DATA 28
7Dimensioned Sketch...................................................................................... 29
7.1 DA 1200 Wall Inlet .....................................................................................................29
7.2 DA 1200 Light Trap/Outside Flange .........................................................................29
7.3 DA 1200 Inlet Cover...................................................................................................30
7.4 DA 1200 Light Trap for Inlet Cover...........................................................................30
7.5 DA 1200 fly screen for inlet cover ............................................................................31

PRODUCT DESCRIPTION
DA 1200 wall inlet is a universal wall inlet which is used for ventilating livestock houses with natural,
LPV or Combi-Tunnel ventilation.
The DA 1200 inlet can be built directly into a wall without any additional support, or it can be embedded
directly in prefab elements at factories manufacturing such elements. The inlet can be assembled from
modules in a number of different ways. The wall inlet is available in different widths making it suitable
for wall thicknesses of up to 35 cm. The inlet is available either with a coarse or a fine mesh.
The universal differentiation of the inlets is patent pending and is supplied with a regulation set which
makes it easy to adjust the air inlet in accordance with the current conditions.
DA 1200 is easy-to-clean due to its open and smooth construction. Also, the thermoplastic stands high-
pressure cleaning. Furthermore, the choice of material (polystyrene) makes the inlet resistant to UV
radiation. The inlet is made of high-impact material; it is dimensionally stable and 100% recyclable.

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PRODUCT SURVEY
1 General Drawing of DA 1200 Wall Inlet

DA 1200 Wall Inlet
1
433020 DA 1220 wall inlet coarse-mesh
433120 DA 1220 wall inlet fine-meshed
433320 DA 1220 wall inlet without net
433001 DA 1220 wall inlet, transp. without net
Used for wall dimensions from 20 to 23 cm.
433024 DA 1224 wall inlet coarse-mesh
433124 DA 1224 wall inlet fine-meshed
433324 DA 1224 wall inlet without net
433002 DA 1224 wall inlet, transp. without net
Used for wall dimensions from 24 to 27 cm.
433029 DA 1229 wall inlet coarse-mesh
433129 DA 1229 wall inlet fine-meshed
433329 DA 1229 wall inlet without net
433003 DA 1229 wall inlet, transp. without net
Used for wall dimensions from 28 to 32 cm.
433033 DA 1233 wall inlet coarse-mesh
433133 DA 1233 wall inlet fine-meshed
433333 DA 1233 wall inlet without net
433004 DA 1233 wall inlet, tranps. without net
Used for wall dimensions from 33 to 35 cm.
DA 1200 is for building in or casting in prefab elements. The
inlet is sufficiently rugged to endure installation directly in
the wall without additional support. Furthermore it can be
incorporated directly in prefab elements during the casting
process. The wall inlet can be assembled from modules in
several different ways. The inlet shutter is insulated.
The wall inlet is supplied with regulation set and universal AIC.
2
433016 DA 1200 net, fine 10x10
A fine net protects against invasion of animals such as mice
and rats.
Net size = 10 × 10 mm. The net is self-supporting, but it is
recommended to fasten it with screws when used together
with an extension duct.
Fine net reduces inlet capacity by approx. 10 %.
1 unit per inlet.
3
433015 DA 1200 net coarse 65x20
Net size = 65 × 20 mm. The net is self-supporting, but it is
recommended to fasten it with screws when used together
with an extension duct.
Coarse net does not reduce the inlet capacity.
1 pc per inlet.

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DA 1200 Wall Inlet
4
433022 DA 1200 set w.screws x10 for block
Used for assembly of DA 1200 brick-in inlets where these are
to be mounted in blocks. Includes 40 units 5 × 45 mm
rustproof screws.
1 set per 10 inlets.
5
433112 DA 1200 air direction baffle, short
The air direction baffle is 7.5cm long. An air direction baffle
(short/long) is always used for adjusting the air jet in cold
weather, and to prevent Coanda-effect along the wall. The
baffle is used on all inlets. However, with two rows of inlets,
it is only necessary with a baffle on the upper row, provided
the inlets are placed right above each other.
1 unit per inlet or 1 unit per every second inlet.
6
433114 DA 1200 air direction baffle, long w. side pl.
The air direction baffle is 15 cm long and with side plates. An
air direction baffle (short/long) is always used for adjusting
the air jet in cold weather, and to prevent Coanda-effect along
the wall. The baffle is used on all inlets. However, with two
rows of inlets, it is only necessary with a baffle on the upper
row, provided the inlets are placed right above each other.
The long air direction baffle is used where the air jet range
and the Coanda-effect are especially important, e.g. in wide
houses.
1 unit per inlet or 1 unit per every second inlet.
7
433014 DA 1200 baffle plate
For reduction of external actions on the DA 1200 baffle plates
are used when one or more of the following conditions are
current:
•The volume of the house is low (narrow and low with a
flat ceiling)
•In detached buildings without shelter belts and the like
The baffle plate must be mounted on all inlets in the same
room and are not to be used together with Advanced Inlet
Control.
The baffle plate increases the requirements to the tightness of
the building and cannot replace external windshield.
The baffle plate does not reduce the inlet capacity.
1 unit per inlet.

DA 1200 Wall Inlet
8
560195 DA 1200 operation set w. long U-shackle
Used where there are obstacles to the free movement of the
pull rod in the shape of disproportionate walls, steel rafters
etc., which project up to 70mm. The present differentiation
system cannot be used together with the set, for which reason
an extra line with spring is supplied to absorb slack. This
way, differentiation can be made.
The inlet flap is not to open more than to horizontal position,
as the winch motor may otherwise be overloaded.
1 unit per inlet.
9
433039 DA 1200 extension rod 240 mm
S433037B DA 1200 extension rod 400mm
Used where there are obstacles to the free movement of the
pull rod, which project more than 70mm from the wall. When
the extension rod is used, the pull rod lies 240/400 mm from
the wall, thus avoiding rafters, concrete poles and other
obstacles.
1 unit per inlet.
10
401902 DA 1000/1200 single operation set
When individual operation of each wall inlet is needed, the
DA 1200 single regulation set is mounted.
1 unit per inlet.
11
401935 Carrier roller f. pull rod, built-in inlet
Is used for built-in inlets.
If there are more than approx. 2 m between the inlets, the pull
rod will bend downwards causing inaccuracy if carrying
pulleys are not used.
1 unit by every 2 m free hanging pull rod.
12
401349 All-purpose holder for pull rod
Is used for flange inlets and built-in inlets.
If there are more than approx. 2 m between the inlets, the pull
rod will bend downwards causing inaccuracy if all-purpose
holders are not used.
1 unit by every 2 m free hanging pull rod.
13
433021 DA 1200 regulation set for 2 inlets
DA 1200 regulation set for two inlets in different heights.
One row of pull rods for each row of inlets is preferable, and
therefore the use of 433021 must be considered a cheaper
alternative.
1 unit per inlet in the upper row.

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DA 1200 Wall Inlet
14
413214 LPV door set for pull rod 8mm
If there are doors etc. in the wall where the inlets are
mounted, and you want to disconnect the pull rod
temporarily, there is a special set that contains the necessary
parts. The set makes it possible to maintain the correct
ventilation level manually and to reassemble the pull rod
easily.
1 unit per door.
15
413223 Door set for wire
The mounting set is used if the pull rod is led round a door.
1 unit per door.
16
433064 DA 1200 light trap complete
Used for DA 1200 brick-in inlet if light dimming is required.
The light trap light-tightness is 99.9 %, corresponding to
20,000 lux outside and 0.05 lux inside (0.05 lux corresponds
to 2.5 ppm).
1 unit per inlet.
17
433067 DA 1200 outside flange
The flange is included in article no. 433064, but it can also be
mounted on the outside of houses with DA 1211/1211B inlets
in order to
•Increase the output to the same level as DA 1200.
Correct the number of inlets.
•Make a nicer finish on the outside of the building.
The net can be mounted on the flange afterwards.
•Give a broader flashing than 433281
433067 can be used when the distance between the inlets,
when placed side by side, exceeds 5 cm.
1 unit per inlet.
18
433066 DA 1200 light trap without flange
Used for retrofitting on DA 1200 when the flange is already
on the building and light dimming is required.
The light-tightness of the light trap is 99.9 %, corresponding
to 20,000 lux outside and 0.05 lux inside (0.05 lux
corresponds to 2.5 ppm).
1 unit per inlet.

DA 1200 Wall Inlet
19
433155 DA 1200 inlet cover
DA 1200 inlet cover can be used together with the inlets of
the DA 1200 series.
The inlet cover is designed to protect the livestock house
against rain/snow and to provide a certain amount of wind
and light dimming effect.
1 unit per inlet.
20
433312 DA 1200 light trap for inlet cover
DA 1200 light trap for inlet cover is always used with the DA
1200 inlet cover.
The light trap prevents a great deal of the sunlight from
penetrating into the building. The light trap is made of
injection-moulded PP (polypropylene) which is dirt-repellent
and easy to clean.
1 unit per DA 1200 inlet cover.
21
433334 DA 1200 fly screen
DA 1200 fly screen for inlet cover is always used together
with DA 1200 inlet cover.
The fly screen prevents the ingress of flies and the DA 1200
fly screen is self-supporting.
Can only be used for inlets in one row.
With regular and sufficient cleaning, the capacity of the inlet
is not reduced by the use of the fly screen.
1 unit per inlet.
433317 Fly screen - 25 m x 1.37 m
Fly screen on a roll prevents the ingress of flies.
With regular and sufficient cleaning there will be no
significant pressure loss, but an emergency opening should be
provided via by pass in case the fly screen is choked.
Use 1 m2fly screen per 2000 m3/h max. air.
22
433138 DA 1200 hen net, hinged
The hen net prevents the fledged hens from sitting in the air
inlet. The net is top-hinged, allowing easy access when
servicing the inlet.
The screw kit (560333) must be ordered separately.
560333 Screw kit DA 1200/1911 hen net
The screw kit is used to assemble the hen net.
One set per bird net.

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MOUNTING GUIDE
Check that the ordered parts have been received and that they are in undamaged condition before
commencing the installation process. Read the directions carefully before commencing assembling.
Avoid any impact when handling the inlet.
Please note that polystyrene is not resistante towards certain chemical substances.
2 Recommended Tools
Below follows a list of tools recommended for mounting of DA 1200 wall inlet.
Part
Description
Cordless drill
Hammer
Screwdriver
Sealant gun
Felt tip marker pen
Measuring tape
Plumbing staff
Multigrip pliers
Utility knife
Chisel
Try square

Part
Description
Wedge
2.1 Mounting of sandwich screws
To ensure that the screw makes the right thickening and the best possible thread on the back, the correct
hole must be drilled first and the screwing must be done with the correct momentum depending on the
thickness of the metal in the sandwich wall.
Diameter of screw [mm]
Thickness of metal in
sandwich panel
[mm]
Size of holes in
sandwich panel
[mm]
Tightness
torque
[Nm]
5
0,63 - 0,75
Ø 3,8
2,5
0,75 - 0,88
Ø 4,1
3,0
0,88 - 1,00
Ø 4,2
3,5
1,00 - 1,25
Ø 4,3
3,5
1,25 - 1,50
Ø 4,4
4,0
3 Wall Inlet Positioning
The positioning of the inlet in a wall depends on the layout of the building and the house layout. The
positioning may therefore only be made according to directions communicated by SKOV A/S or
representatives of the company.
4 Installation in wall
The upper transportation screw at the centre of the flap should secure that the inlet box is not dislocated
sidewise when building in.
The DA 1200 is a plastic wall inlet and not as sturdy as a brick. When temperature changes plastic is
working considerably more than brickwork (up to 1.5 mm at a change of temperature of approx. 30 °C),
and consequently some conditions should be considered when handling and building in.

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4.1 Installation in an existing wall or element
Place the inlet in the middle of the wall hole using wedges.
Do not press the inlet into place during assembly as this may cause the inlet frame to warp so that the
flap cannot close tightly.
Point the inlet as shown in the drawing. Point in the entire depth of the inlet in the corners of the inlet
and approx. 10 cm to each side. On the middle part of the inlet, it is important only to point the edge as
the joint may otherwise cause the inlet to warp. We recommend using a caulking gun.
SKOV A/S recommends using winter foam. It MUST be without any isocyanates.
Important! Wet the joint faces with water from a mist sprayer before proceeding with the pointing.
4.2 Building-in the Inlet
Place the wall inlet horizontally, flush with the finished
inner wall. Ensure that the flap faces towards the
building with the transportation screw at the top.
Lay the inlet "loosely" down into the mortar and fix it
symmetrically to prevent unnecessary loads which may
cause the inlet to warp.
Transportation
screw

There should at least be a full joint (approx. 10 mm) round the entire inlet. Make sure that the inlet is able
to work in relation to the building structure.
Fill the inlet ribs completely with mortar.
Make sure that the building becomes completely tight and at the same time leads any solar heat into the
structure.
In order to prevent cold bridges from forming along the side of the inlet, the insulation of the brickwork
must abut against the inlet all the way round it (similarly to normal building structures).
Finally, clean the inside and outside of the inlet and remove mortar, also from holes.
Mount a sill on the outside below the inlet, e.g. item no. 433028, or coat with cement to prevent water
from penetrating down into the building structure.
Choose a regular size joint. If you choose to use bricks only, cut a brick to half height to ensure an even
joint all the way round.
Approx. 10 mm joint
Fill the inlet ribs completely
with mortar

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4.3 Modular System
The inlet can be assembled from modules in a number of different ways. However, the inlets may be
assembled only in such a way that guide pins and fastening screws can be used; i.e. the inlets may only be
assembled above/below or next to each other. Always assemble the inlets with the guide pins and
fastening screws before they are build-in/casted in.
When inlets are assembled in blocks of, for example, two or four, insulate the inlets with foam tape or
polystyrene in the ribs between the inlets (i.e. insulate once per assembly).
Then assemble the inlets using the guide pins, see below.
Secure the inlets using the fastening screws in front of the guide pins (use screw kit 433022).
Assemble the inlets before building them into or installing them in the wall.
Break off the moulded guide pins and
place them in the pre-formed holes on
the rib. Then assemble the inlets.
Secure the inlets using the fastening screws. Use three screws in the
bottom and one in the side of the inlet.

5 Mounting the Regulation Set
5.1 Regulation Set with Universal AIC
The regulation set including filler plug is located
in a bag behind the flap.
522007 DA 1200 Clamp for pull rod
504833 DA 1200 U-shackle for pull rod
522940 Nylon cord
526035 DA 1200 reel
526046 DA 1200 lock for U-shackle
The picture illustrates various kinds of mounting
and pull to the right and left side respectively.
Place the clamp as shown; clamp must be placed
identically along the entire length of the pull rod.
Press U-shackle with reel into place or tap the
shackle gently with a hammer.
The big reel must have a end backlash of 0.5 -
1mm.
Disassembly is preferably done with pliers and
tapping with a hammer.
Mount the filler plugs included.
526035
522007
522940
504833
526046

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Only when all reels have been mounted, the pull
rod is pushed into place.
Place the screw in the clamp on the pull rod.
Always place the clamp identically in relation to
the roller so there will be as little readjustment as
possible. The distance must be approx 85mm
when the ventilation system is closed.
Turn the cord holder (526046) so it is flush with
the bottom of the inlet.
Make sure that the roller for the pull rod can
rotate freely.
Place the cord in the upper line guide and on the
outer roller.

Open and close the ventilation system twice.
Adjust alle the inlets to be fully open at fully open
ventilation system.
Close the ventilation system. Check that the inlets
can close (5% slack on the winch motor).
Adjust all the inlets accordingly.
Differentiation:
Depending on the differentiation degree on the
inlets with delayed opening, place the cord in the
middle or lower line guide. Remember to place
the cord on the inner roller (the long roller).
The ventilation system is opened until the first
inlets reach an open position of 85mm. The
delayed inlets are now approx 25mm open.

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5.1.1 Check the position of the string at advanced inlet control
Inlet that opens first:
Place the string in the upper line guide on the
inlets that open first.
Remember to place the string on the outer roller
(the narrow roller).
Inlet with delayed opening:
Place the string in the lower line guide on the
inlets with open delay.
Remember to place the string on the inner roller
(the long roller).

5.1.2 Adjustment of wall inlets
Ensure that the actuator is set and calibrated as
described in Technical User Guide (DA 175
actuator) based on the values below.
Adjust limits for DA 175 –at direct pull.
The effective tensile length for A 1200, DA 1211
and DA 1911 is 370 mm.
In cases where there is a wire between the actuator
and the wall inlets, it may be necessary to prolong
the actuator's effective tensile length.
Run the actuators’s cylinder completely in to
position IN, mark the point with a marker or
similar. Follow this by calibrating the cylinder’s
effective tensile length.
Run the actuator completely in to position IN and
adjust the inlets so that all inlets are open at 263
mm
Start the adjustment at the inlets closest to the
actuator.
An opening of 263 mm ensures that the string does
not fall off of the roller on the inlets that open first.
Measure as shown on the pictures below.
The strings should subsequently be slack when the
actuator is completely in position OUT and
precisely tight at the first point in the Side curve.