Skov DA 3800 flange inlet Mounting Guide

DA 3800 Flange Inlet

Mounting Guide

604351 • 2021-03-17

DA 3800 Flange Inlet

Mounting 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.

DA 3800 Flange Inlet

Mounting Guide

1 Product description........................................................................................................................................5

2 Product survey ...............................................................................................................................................6

2.1 Flange inlet ................................................................................................................................. 7

2.2 Accessories................................................................................................................................ 7

3 Mounting guide.............................................................................................................................................10

3.1 Recommended tools................................................................................................................ 10

3.2 Mounting of sandwich screws................................................................................................ 11

3.3 Wall inlet positioning............................................................................................................... 12

3.4 Mounting inlet ..........................................................................................................................12

3.4.1 Preparing hole in wall................................................................................................................. 12

3.4.2 Mounting clamp for the pull rod.................................................................................................. 14

3.4.3 Mounting inlet in wall.................................................................................................................. 16

3.4.4 Mounting the activation lever ..................................................................................................... 17

3.4.5 Mounting safety strip.................................................................................................................. 17

3.4.6 Oblique walls.............................................................................................................................. 18

3.4.7 Foaming ..................................................................................................................................... 19

3.4.8 Pointing ...................................................................................................................................... 20

3.4.9 Check the mounting ................................................................................................................... 21

3.5 Mounting pull rod and reel...................................................................................................... 22

3.5.1 Release for cord when servicing................................................................................................ 24

3.5.2 Coil spring .................................................................................................................................. 25

3.5.3 Spring unit on pull rod ................................................................................................................ 26

3.5.4 Advanced Inlet Control (AIC) ..................................................................................................... 27

3.5.4.1 Standard opening....................................................................................................................... 27

3.5.4.2 Differential opening .................................................................................................................... 28

3.5.4.3 From differential to standard opening ........................................................................................ 29

3.6 Mounting accessories ............................................................................................................. 30

3.6.1 Inlet funnel ................................................................................................................................. 30

3.6.2 Extension piece.......................................................................................................................... 31

3.6.3 Wall gasket ................................................................................................................................ 33

3.6.4 Outside flange for wall inlet........................................................................................................ 33

3.6.5 Screen........................................................................................................................................ 35

3.6.6 Air direction baffle ...................................................................................................................... 40

3.6.7 Extension rod ............................................................................................................................. 42

3.6.8 Hen net ...................................................................................................................................... 44

3.6.9 Louver kit ................................................................................................................................... 45

3.6.10 Dimmer ...................................................................................................................................... 47

4 Maintenance..................................................................................................................................................48

4.1 Recycling/Disposal .................................................................................................................. 48

5 Technical data...............................................................................................................................................49

5.1 Dimensioned sketch ................................................................................................................ 50

5.1.1 DA 3800 .................................................................................................................................... 50

5.1.2 Inlet funnel ................................................................................................................................. 50

5.1.3 Air direction baffle ...................................................................................................................... 51

5.1.4 Shield ......................................................................................................................................... 51

5.1.5 Hen net ...................................................................................................................................... 51

DA 3800 Flange Inlet

Mounting Guide 5

1 Product description

The DA 3800 flange inlet is a large universal wall inlet, which is used for ventilating livestock houses with LPV or

Combi-Tunnel ventilation.

The flange inlet can be adapted to wall thicknesses up to 35 cm employing an extension piece. The inlet is fixed

on the inside wall by screws through the flange itself. It cannot be built or cast directly into wall elements.

The DA 3800 flange inlet is available with Advanced Inlet Control (AIC), which makes it easy to adjust the air in-

take following the current conditions.

The DA 3800 is also available with Advanced Flow Control (AFC), which provides high pressure stability and

optimum airflow from minimum to maximum ventilation.

The DA 3800 flange inlet is easy-to-clean because of its open and smooth design.

The inlet is made of a highly impact-proof material; it is dimensionally stable and 100% recyclable.

DA 3800 flange inlet is protected by several patents.

DA 3800 Flange Inlet

6 Mounting Guide

2 Product survey

Flange inlet

Outside flange

Air direction baffle

Hen net

Extension piece

Extension rod

Inlet funnel

Air intake louver kit

Shield

Wall gasket

Dimmer

DA 3800 Flange Inlet

Mounting Guide 7

2.1 Flange inlet

433354 DA 3800 AFC flange inlet w/inlet funnel

It is used for ventilation of livestock buildings. The flange inlet is available

with Advanced Flow Control (AFC), which provides high pressure stability

and optimum airflow from minimum to maximum ventilation.

The inlet funnel incl. coarse net is used to improve performance as well as

avoid the ingress of birds and larger animals.

It comes with spring unit, parts for mounting on pull rod, and differentiation.

The 14 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

433374 DA 3800 AFC flange inlet wo/inlet funnel

It is used for ventilation of livestock buildings. The flange inlet is available

with Advanced Flow Control (AFC), which provides high pressure stability

and optimum airflow from minimum to maximum ventilation.

It comes with spring unit, parts for mounting on pull rod, and differentiation.

The 14 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

433353 DA 3800 flange inlet w/inlet funnel

It is used for ventilation of livestock buildings.

The inlet funnel incl. coarse net is used to improve performance as well as

avoid the ingress of birds and larger animals.

It comes with spring unit, parts for mounting on pull rod, and differentiation.

The 14 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

433373 DA 3800 flange inlet wo/inlet funnel

It is used for ventilation of livestock buildings.

It comes with spring unit, parts for mounting on pull rod, and differentiation.

The 14 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

2.2 Accessories

433355 DA 3800 air direction baffle

The air direction baffle is used to direct/correct the air jet vertically.

The air direction baffle may reduce the need for covering small obstacles

(h<100 mm) on the ceiling surface.

It comes with screws, brackets, and positioning lock.

One per inlet.

DA 3800 Flange Inlet

8 Mounting Guide

433364 DA 3800 screen

It is used for protection against direct light incidence, wind, and driving rain.

The 10 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

One per inlet.

433358 DA 3800 outside flange

It is used where a closed wall transition is required on the outside.

The 14 screws and 14 washers for mounting must be ordered separately.

When mounting in a sandwich wall, 433375 can be used.

One per inlet.

433375 DA 3800 screw kit f/outside flange

Used when mounting the DA 3800 outside flange in sandwich walls.

433359 DA 3800 extension rod 40 cm

The extension rod is used if you want to run the pull rod round heavy con-

crete pillars or the like, where it is not possible to run the pull rod directly

through the pillar by making a through-going hole.

It is supplied with an 1850 mm nylon cord.

The 4 screws for mounting must be ordered separately. When mounting in

a sandwich wall, 351585 can be used.

One per inlet.

433371 DA 3800 extension piece 14 cm

Used for wall dimensions from 14-24 cm.

433369 DA 3800 extension piece 17.5 cm

Used for wall dimensions from 24-27.5 cm.

433370 DA 3800 extension 25.5 cm

Used for wall dimensions from 27.5 to 35 cm.

The extension must be used together with the inlet funnel and the inlet

when the wall thickness exceeds 13 cm.

If an extension piece is to be used on a flange inlet without inlet funnel

(433354 and 433373), 433352 inlet funnel must always be ordered, as it

contains an insulation piece.

It comes with mounting screws.

One per inlet.

DA 3800 Flange Inlet

Mounting Guide 9

433352 DA 3800 inlet funnel

The inlet funnel incl. coarse net is used for retrofitting to improve perfor-

mance as well as avoid the ingress of birds and larger animals.

Inlet funnel contains an insulation piece for insulation.

Click it directly onto the inlet.

One per inlet.

433360 DA 3800 hen net

It is used to prevent the birds from sitting on the inlet flap.

Cannot be used together with the air direction baffle.

It comes with mounting fitting.

The air output is not influenced by the hen net.

One per inlet.

433363 DA 3800 louver kit

Used when retrofitting of Advanced Flow Control (AFC)T, which provides

high pressure stability and optimum airflow from minimum to maximum ven-

tilation, is required. Note that in case of new sale, the following part no.

should be offered instead: 433354 and 433353 with inlet funnel including

louver kit/AFC.

One per inlet.

433381 DA 3800 wall gasket

Used as a gasket between the wall and DA 3800 flange inlet. Can in most

cases replace the manual point process.

To be mounted on the inlet frame.

One per inlet.

433372 DA 3800 damper for flap

Used in areas with a risk of strong gust of wind.

Strong gusts of wind on the leeward side of the building can create a high

negative pressure that can close the inlet flap for a short time. The damper

prevents the sound effect that can occur and disturb the animals in these

cases.

One per inlet.

351585 Tapp. screw 5x30 pan TX25 ZnNi spec.

Used when mounting the DA 3800 and accessories in sandwich walls.

DA 3800 Flange Inlet

10 Mounting Guide

3 Mounting guide

Check that all ordered parts are present and undamaged prior to starting the work. Read the directions carefully

before starting mounting.

3.1 Recommended tools

See a list of tools recommended for the installation of the flange inlet below.

Item Description

Cordless drill

Bits holder

Screwdriver bits

Drill kit

Atomizer

Sealant gun

Hammer

Utility knife

Wedge

Marker pen

Torque wrench

Tape measure

Screwdriver

Foam gun

DA 3800 Flange Inlet

Mounting Guide 11

Item Description

Chisel

Ladder

Jigsaw

Spirit level

Try square

3.2 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 panel.

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

DA 3800 Flange Inlet

12 Mounting Guide

3.3 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 or representatives of the company.

The inlet must be placed horizontally in the wall. The inlet flap must be pointing into the house.

Place the insulation of the brickwork against the inlet all the way round (like in other categories of constructions).

This way you prevent a cold bridge along the side of the inlet from being formed.

The inlet is fixed on the inside wall by screws directly through the flange itself, see section Mounting inlet in wall

[}16]. In connection with brick and concrete walls, use mounting foam to fix the inlet, see section Foaming

[}19].

3.4 Mounting inlet

3.4.1 Preparing hole in wall

Mark out the correct amount of holes according to measurements. Be aware of tolerance.

Distance to coil spring

Min. distance between holes

Min. distance to the wall on the

tensile side, see table below

1200 mm

950 mm 950 mm

220 mm

xxx mm

480 mm

280 mm

Distance to the ceiling

Positioning of actuator Min. distance to the wall on the tensile side

[mm]

Min. 2100 mm

637 mm

637

700 mm 950 mm

1650

Min. 2100 mm

2100

DA 3800 Flange Inlet

Mounting Guide 13

Remember always to use a spirit level.

Drill four holes of roughly 10 mm right through the wall.

Cut the holes.

DA 3800 Flange Inlet

14 Mounting Guide

3.4.2 Mounting clamp for the pull rod

Twist the wedges off. Keep them, so they are ready for

later use. See section Oblique walls [}18].

For AFC inlets, remove the activation lever. Keep them,

so they are ready for later use. See section Mounting

the activation lever [}17].

Parts in a bag and where they are used

Picture Num-

ber

Type Application

1DA 3800 bracket for the pull rod. Used in section, Mounting clamp for the

pull rod [}14].

2PT screw 5x16, flange, TX25.

Tightenedwith 2 Nm

1Tunnel inlet, bushing L= 17.5. Used in section, Mounting pull rod and reel

[}22].

1DA 3800 reel ø12/18/28x12.4.

1DA 3800 clamp for the pull rod. Used in section, Spring unit on pull rod

[}26].

1Tapping screw 4.8x32 TX25.

Tightened with 3Nm.

1Washer ø4.3/ø15x1.

1DA 3800 safety strip for flap Used in section, Mounting safety strip

[}17]

DA 3800 Flange Inlet

Mounting Guide 15

Mount the holder for the pull rod using the two enclosed

screws (2 Nm).

DA 3800 Flange Inlet

16 Mounting Guide

3.4.3 Mounting inlet in wall

Make sure that the inlet flap is closed.

In the case of sloping walls, make sure not to tighten the

screws too much so that the inlet frame becomes

oblique, preventing the inlet flap from closing tightly. See

section Oblique walls [}18].

Place the inlet in the middle of the hole. Avoid pushing

the inlet into place during mounting.

Mount the inlet on the wall using screws.

Remember to use a spirit level.

Please make sure not to over-tighten the screws as they

are tightened directly against plastic.

To open the inlet, the differential switch on the flap must

be turned counterclockwise.

DA 3800 Flange Inlet

Mounting Guide 17

3.4.4 Mounting the activation lever

1

2

3

Open inlet.

1. Mount the activation lever on the guide bar on both

sides.

2. Turn the activation lever.

3. Press the activation lever into the slot.

3.4.5 Mounting safety strip

1

2

3

Open inlet.

1. Insert the safety strip around the center pillar.

2. Insert the safety strip into the two slots on the flap.

3. Press the safety strip into the two slots.

DA 3800 Flange Inlet

18 Mounting Guide

3.4.6 Oblique walls

If the inside wall is sloping, you may have to mount a

heavy-duty plate or wedges between the inlet and the

wall to avoid distortion of the inlet.

It is essential to adjust for the distortion when mounting

in sloping walls. Otherwise, the inlet flap does not close

tightly after the inlet is inserted.

The inlet frame is adjusted using wedges,from section

Mounting clamp for the pull rod [}14].

Check that the inlet flap still closes tightly every time a

screw is tightened. Otherwise, you have to adjust the

wedges until the inlet flap closes tightly again.

Remove the redundant part of the wedge when all the

screws have been tightened.

DA 3800 Flange Inlet

Mounting Guide 19

3.4.7 Foaming

SKOV A/S recommends using single-component polyurethane foam or similar.

Check before foaming how much the foam expands.

Wet the faces with water from a mist sprayer before

proceeding with the foaming.

Foam around the inlet, as shown in the drawing. Foam

the entire depth of the wall in the corners of the inlet

and approx. 10 cm to each side.

In the middle part of the inlet, it is essential only to

foam along the edge, as the foam may otherwise

cause the inlet to warp.

Push the foam in against the inlet (5-10 mm) after the

foam has dried a little to allow adequate space for

pointing.

Wet the foam again with water from a mist sprayer.

DA 3800 Flange Inlet

20 Mounting Guide

3.4.8 Pointing

SKOV A/S recommends Sikaflex AT Connection or MS polymer single-component or similar.

If the wall gasket is chosen, it can in most cases re-

place the manual point process. See section Wall gas-

ket [}33].

Complete by applying a sealing edge both internally

and externally when the foam is dry.

Point flat the surface of the pointing.

If the distance between the wall and the edge of the in-

let exceeds 6 mm, you can use a sealant tape to seal

up with before placing the pointing.

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Skov DA 3800 flange inlet Mounting Guide

Skov DA 3800 flange inlet Mounting Guide

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