Skov DA 820 Installation instructions manual

DA 820 chimney/wall outlet
Mounting Guide
604346 • 2021-06-29
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DA 820 chimney/wall outlet
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 820 chimney/wall outlet
Mounting Guide
1 Product description........................................................................................................................................6
2 Product survey ...............................................................................................................................................7
2.1 Outline of chimney..................................................................................................................... 7
2.1.1 Above the roof.............................................................................................................................. 8
2.1.2 Lead-through.............................................................................................................................. 10
2.1.3 Attic/section................................................................................................................................ 12
2.1.4 Inlet ............................................................................................................................................ 13
2.2 Outline of wall exhaustion ...................................................................................................... 16
3 Mounting guide.............................................................................................................................................18
3.1 Recommended tools................................................................................................................ 18
3.2 Mounting examples ................................................................................................................. 20
3.2.1 Long chimney............................................................................................................................. 20
3.3 General drawing....................................................................................................................... 21
3.4 Mounting the duct.................................................................................................................... 22
3.4.1 Shortening ducts ........................................................................................................................ 22
3.5 Mounting the outlet cone and roof duct ................................................................................ 23
3.6 Mounting the roof duct and duct............................................................................................ 23
3.7 Mounting roof sheet ................................................................................................................24
3.7.1 Roofing sheet in a corrugated roofing sheet construction.......................................................... 24
3.7.2 Flat roofing sheet in a sandwich panel roofing sheet construction ............................................ 24
3.8 Roof duct in roof ...................................................................................................................... 26
3.8.1 Flat roofing sheet in a corrugated steel plate construction, ridge .............................................. 27
3.8.2 Flat roofing sheet in a corrugated steel plate construction, side................................................ 28
3.8.3 Check if the top is level .............................................................................................................. 30
3.9 Mounting duct unit on roof sheet........................................................................................... 30
3.10 Mounting the environment module ........................................................................................ 31
3.11 Mounting roof cap.................................................................................................................... 32
3.12 Long chimney with outside duct ............................................................................................ 32
3.12.1 Outside duct on roofing sheet .................................................................................................... 32
3.12.2 Outlet cone and roof duct on outside duct ................................................................................. 33
3.12.3 Mounting the insulation .............................................................................................................. 33
3.12.4 Mounting storm protection kit on roof duct with outside duct ..................................................... 34
3.13 Long chimney, single layer..................................................................................................... 35
3.13.1 Shortening of roof ducts............................................................................................................. 35
3.13.2 Mounting the duct in roof duct.................................................................................................... 35
3.13.3 Duct, outlet cone and roof duct up to 4 meters .......................................................................... 38
3.13.4 Mounting storm protection kit on roof duct................................................................................. 39
3.14 Lead-through in ceiling ........................................................................................................... 39
3.15 Mounting the fan ...................................................................................................................... 40
3.15.1 Mounting the fan suspension ..................................................................................................... 40
3.15.2 Mounting air direction baffles ..................................................................................................... 41
3.16 Mounting the bell mouth ......................................................................................................... 41
3.17 Foaming and sealing of the duct unit .................................................................................... 42
3.18 Mounting the safety net........................................................................................................... 42
3.18.1 Mounting safety net on roof duct................................................................................................ 42
3.18.2 Mounting safety net on bell mouth ............................................................................................. 42
3.19 Mounting the light tray ............................................................................................................ 43
3.20 Mounting the light bowl........................................................................................................... 43
3.21 Mounting the drip tray ............................................................................................................. 44
3.22 Wall exhaustion........................................................................................................................ 45
3.22.1 Mounting screws in sandwich panel .......................................................................................... 45

DA 820 chimney/wall outlet
3.22.2 Mounting wall exhaustion........................................................................................................... 45
3.22.3 Mounting supporting ring and relief wire .................................................................................... 48
3.22.4 Mounting wall exhaustion onto a box......................................................................................... 49
3.22.5 Mounting light trap ..................................................................................................................... 51
4 Maintenance instructions ............................................................................................................................52
4.1 Cleaning.................................................................................................................................... 52
4.2 Recycling/Disposal .................................................................................................................. 52
5 Technical data...............................................................................................................................................53
5.1 Dimensioned sketch ................................................................................................................ 53
Mounting Guide

DA 820 chimney/wall outlet
6 Mounting Guide
1 Product description
The DA 820 components are used for extracting air from livestock houses. The DA 820 is aerodynamic and pro-
vides high air output with low energy consumption. TheDA 820 is made of a special polypropylene material,
which withstands heavy high-pressure cleaning The special polypropylene is smooth and anti-soiling and DA
820 is thus easy to clean. Polypropylene is environmentally sound, it is recyclable and no contaminants are gen-
erated in the manufacturing process.
The labyrinth sealing between the roof duct and the roofing sheet ensures a life-long impermeability of the unit
without using silicone, rubber sealing or plastic cover.

DA 820 chimney/wall outlet
Mounting Guide 7
2 Product survey
2.1 Outline of chimney
Above the roof
Lead-through

DA 820 chimney/wall outlet
8 Mounting Guide
Attic/section
Inlet
2.1.1 Above the roof
434610 DA 820 roof cap ø1400, gray
434611 DA 820 roof cap ø1400, black
The roof cap reduces water penetration problems; note, however, that the
chimney output will also be reduced.
Supplied with mounting set.
434612 DA 820 roof cap ø1400 with net, gray
434613 DA 820 roof cap ø1400 with net, black
The roof cap with net prevents birds from entering the house and reduces
water penetration problems, but please note that the chimney output will
also be reduced. Supplied with mounting set.

DA 820 chimney/wall outlet
Mounting Guide 9
434655 DA 820 bird protection f. outlet cone, set
Used to prevent birds making contact with the outlet cone.
Supplied with screws.
434600 DA 820 outlet cone, grey
434601 DA 820 outlet cone, black
Outlet cone which reduces water penetration problems and the pressure
loss. This increases the output of the chimney.
Supplied with screws.
434602 DA 820 roof duct gray
434603 DA 820 roof duct black
Used for roof ducts in roof, outlet cone assembly, and for wall exhaust units.
Supplied with screws, bit and DA 820 mounting guide.
434661 DA 820 environment module
The environment module concentrates the air from the fan to increase the
air jet range over the roof.
434604 DA 820 duct 750 mm, gray
434605 DA 820 duct 750 mm, black
Duct without fan suspension.
Supplied with screws.
434652 DA 820 supporting ring
Use it if there are more than 1.5 meters of duct above the roof, and you use
one supporting ring for each commenced 1.5 m of duct above the roof.
You also use it to stabilize the duct by the fan in the wall exhaustion, so the
duct remains circular.

DA 820 chimney/wall outlet
10 Mounting Guide
434616 DA 820 duct,out ø880x1000 gray
434617 DA 820 duct out ø880x1000 black
It is used as an outer duct around the DA 820 duct when extending the duct
above the roof.
You typically apply the outer duct if customers want a double duct construc-
tion for the sake of being able to insulate to prevent condensation, or if they
experience that it provides increased robustness in the duct construction it-
self. However, there is no requirement to use an outer duct for the DA 820
series.
Remember that insulation (item number 434650) must be purchased sepa-
rately and that a reinforced roofing sheet (item number 434642/434643) is
also required.
It comes with a mounting set.
434650 DA 820 insulation 1200 mm
20 mm insulation with aluminum foil/vapor barrier, which is used together
with 434616/434617.
It comes with the tape.
434449 DA 600/DA820 storm protection kit
To be used if the chimney is extended by more than 1.5 m above the roof.
The storm protection kit stabilizes the exhaust unit with steel wires between
the roof duct and the roof.
Supplied with 24 m Ø4 wire.
2.1.2 Lead-through
434654 DA 820 net, roof duct
The protective net is used for wall exhaustion or where extra protection is
required.
Supplied with cable ties.
434602 DA 820 roof duct gray
434603 DA 820 roof duct black
Used for roof ducts in roof, outlet cone assembly, and for wall exhaust units.
Supplied with screws, bit and DA 820 mounting guide.
407665 DA 600/DA 820 roof flashing PVC 1500 x 1500mm
To be used where roofing sheets are not used.

DA 820 chimney/wall outlet
Mounting Guide 11
434640 DA 820 roof sheet, side, gray
434641 DA 820 roof sheet, side, black
The roofing sheet is used for mounting on the side and is available in differ-
ent versions in terms of roofing sheet types and pitches.
434642 DA 820 rf sh, side, long gray
434643 DA 820 rf sh, side, long black
It is a reinforced roofing sheet in weather-resistant fiberglass for side
mounting, which is available in various versions concerning roofing sheet
type and slope.
Always use it if a double duct construction is established using
434616/434617.
434644 DA 820 roof sheet, ridge, gray
434645 DA 820 roof sheet, ridge, black
The roofing sheet is used for mounting on the ridge and is available in dif-
ferent pitches.
434646 DA 820 rf sh, ridge, long gray
434647 DA 820 rf sh, ridge, long black
It is a reinforced roofing sheet in weather-resistant fiberglass for ridge
mounting, which is available in various versions concerning slope.
Always use it if a double duct construction is established using
434616/434617.
434093 DA 600/DA820 kit for closure of water outlet
Used if water outlet is not required.
Includes a Bostik bottom list, 20 mm, and Bostik sealant.

DA 820 chimney/wall outlet
12 Mounting Guide
2.1.3 Attic/section
434604 DA 820 duct 750 mm, gray
434605 DA 820 duct 750 mm, black
Duct without fan suspension.
Supplied with screws.
434606 DA 820 duct with fan suspension, grey
434607 DA 820 duct with fan suspension, black
Duct (750 mm) with shoe for suspension of fan unit.
Supplied with fan suspension and screws.
Remember that ducts in the house must be insulated to counteract conden-
sation.
434652 DA 820 supporting ring
Use it if there are more than 1.5 meters of duct above the roof, and you use
one supporting ring for each commenced 1.5 m of duct above the roof.
You also use it to stabilize the duct by the fan in the wall exhaustion, so the
duct remains circular.
434608 DA 820 duct w/door 750 mm gray
Duct with door is used for servicing of fan.
Supplied with fan suspension and screws.
434614 DA 820 elbow 45º, gray
434615 DA 820 elbow 45º, black
The elbow can be used for adjustments in attics.
Supplied with screws.

DA 820 chimney/wall outlet
Mounting Guide 13
2.1.4 Inlet
434658 DA 820 bell m/chimney stepless DynAir gray
434659 DA 820 bell m/chimney stepless DynAir black
You use it for stepless DA820 exhaust units, where the maximum air vol-
ume is 12,500-29,000 m3/h.
It comes with Dynamic Air sensor, bell mouth, swivel shutter, baffle plates,
and a DA 74CV stepless swivel shutter motor.
Note that the bell mouth/exhaust unit can only be used for registration of air
volumes: that is, the current software version does not support dynamic Air
Control.
434660 DA 820 bell mouth/duct stepless DynAir gray
Use it for stepless DA and 820 duct take-offs, where the maximum air vol-
ume is 5,500-12,500 m3/h.
It comes with Dynamic Air sensor, bell mouth, swivel shutter, and a DA
74CV stepless swivel shutter motor.
There must always be at least half a meter of duct connected to the unit to
obtain a stable measurement.
434662 DA 820 bell mouth stepless, gray
434663 DA 820 bell mouth stepless, black
Used for stepless regulation of shutter.
Supplied with bell mouth, swivel shutter, baffle plates and a DA 74CV step-
less winch motor.
434664 DA 820 bell mouth on/off, gray
434665 DA 820 bell mouth on/off, black
Used for ON/OFF regulation of shutter.
Supplied with bell mouth, swivel shutter and a DA 74CO ON/OFF winch
motor.
Please note if a contactor is required, cf. article no. 280060.
434620 DA 820 bell mouth with flap, gray
434621 DA 820 bell mouth with flap, black
Used for chimney with mechanical drive.
434618 DA 820 bell mouth, gray
434619 DA 820 bell mouth, black
A bell mouth is used where a swivel shutter is not required.
Supplied with screws.

DA 820 chimney/wall outlet
14 Mounting Guide
434623 DA 820 swivel shutter black
Used for mounting in duct.
Supplied with axle.
434628 DA 820 butterfly flap w/bell mouth
Use it until the ON/OFF exhaust unit opens through an air current.
The air output of the exhaust unit will be reduced.
Comes with screws.
434653 DA 820 net, swivel shutter
The protective net is used if the fan is placed in a low position, e.g. less
than 2.70 m above the floor and by wall exhausts.
Supplied with cable ties.
434626 DA 820 drip tray ø1400 gray
434627 DA 820 drip tray ø1400 black
The drip tray is used to prevent any encroaching water from dripping
straight down into the livestock house.
The air output of the exhaust unit will be reduced.
The drip tray is suspended under the exhaust unit. A tiltable installation is
an option, which facilitates cleaning and emptying.
It comes with a mounting set.
434629 DA 820 light plate ø1700, black
You use it for moderate protection from light ingress into the livestock
house.
The air output of the exhaust unit will be reduced.
A tiltable installation is an option, which facilitates cleaning and emptying.
It comes with a mounting set.
434631 DA 820 light bowl Ø1500 black
You use it for a high degree of protection from light ingress into the live-
stock house.
The air output of the exhaust unit will be reduced.
A tiltable installation is an option, which facilitates cleaning and emptying.
It comes with spacer rod and mounting set.
280060 Contactor 3-pol 400V, 230V 50/60 Hz
A contactor is required when a tripolar (400 V) fan is used together with DA
74, and the fan cannot be adjusted.
In other words, 1 contactor must be ordered for each DA 74 when the fan
runs ON/OFF.

DA 820 chimney/wall outlet
Mounting Guide 15
434018 Dynamic Air - kit for bell mouth/chimney
Dynamic Air sensor (0-300 Pa) for measuring and regulation of air output
for stepless chimneys. This article number is only used for the purpose of
retrofitting on existing chimneys.
Supplied with screw kit.
See specifications and limitations for article number 434658/434659 bell
mouth/chimney stepless DynAir.
434035 Dynamic Air - kit for bell mouth/duct
Dynamic Air sensor (0-100 Pa) for measuring and regulation of air output in
stepless take-offs in central duct. This article number is only used for the
purpose of retrofitting on existing take-offs.
Supplied with screw kit.
See specifications and limitations for article number 434660 bell mouth/duct
stepless DynAir.
434008 DA 600/DA 800 air direction baffles, black
Used to improve the accuracy of the minimum ventilation.
The baffle plates are used together with stepless fans and include two air
baffle plates and mounting screws.
432056 Universal kit f. plastic swivel shutter
Used when the swivel shutter is placed in a duct and not in the bell mouth.
434088 Arm for swivel shutter in bell mouth
Includes a short and a long arm for the swivel shutter, suspension plate and
various mounting screws.

DA 820 chimney/wall outlet
16 Mounting Guide
2.2 Outline of wall exhaustion
434666 DA 820 wall exhaust stepless gray
Used for stepless wall exhaust units.
Includes DA 820 bell mouth, winch motor stepless, 0.75 m duct, roof duct,
fan suspension, inside and outside safety net, one wall cover, support ring
and screws.
If an extra wall cover is needed, order 434624 DA 820 wall cover and
560322 DA 820 mounting set for wall cover.
434667 DA 820 wall exhaust ON/OFF gray
Used for ON/OFF wall exhaust units.
Includes DA 820 bell mouth, winch motor ON/OFF, 0.75 m duct, roof duct,
fan suspension, inside and outside safety net, one wall cover, support ring
and screws.
If an extra wall cover is needed, order 434624 DA 820 wall cover and
560322 DA 820 mounting set for wall cover.
Please note if a contactor is required, cf. item number. 280060.
434602 DA 820 roof duct gray
434603 DA 820 roof duct black
Used for roof ducts in roof, outlet cone assembly, and for wall exhaust units.
Supplied with screws, bit and DA 820 mounting guide.
434606 DA 820 duct with fan suspension, grey
434607 DA 820 duct with fan suspension, black
Duct (750 mm) with shoe for suspension of fan unit.
Supplied with fan suspension and screws.
Remember that ducts in the house must be insulated to counteract conden-
sation.

DA 820 chimney/wall outlet
Mounting Guide 17
434624 DA 820 wall cover, gray
Used when mounting wall exhaustion for closure against wall. May be used
both outdoors and indoors.
When using wall covers order one 560322 DA 820 mounting set for wall
cover per wall exhaust.
560322 DA 820 mounting set for wall cover
Used for wall exhaustion for closure against wall.
Order one set per wall exhaustion.
434618 DA 820 bell mouth, gray
434619 DA 820 bell mouth, black
A bell mouth is used where a swivel shutter is not required.
Supplied with screws.
434623 DA 820 swivel shutter black
Used for mounting in duct.
Supplied with axle.
434653 DA 820 net, swivel shutter
The protective net is used if the fan is placed in a low position, e.g. less
than 2.70 m above the floor and by wall exhausts.
Supplied with cable ties.
434654 DA 820 net, roof duct
The protective net is used for wall exhaustion or where extra protection is
required.
Supplied with cable ties.
280060 Contactor 3-pol 400V, 230V 50/60 Hz
A contactor is required when a tripolar (400 V) fan is used together with DA
74, and the fan cannot be adjusted.
In other words, 1 contactor must be ordered for each DA 74 when the fan
runs ON/OFF.

DA 820 chimney/wall outlet
18 Mounting Guide
3 Mounting guide
If the DA 820 is installed in areas with risk of ice/snow slide, precautions must be
made to avoid damage to the chimney and wall exhaustion.
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
Sealant gun
Hammer
Utility knife
Crowbar
Marker pens
Tape measure
Power shears
Combination spanner
Saw

DA 820 chimney/wall outlet
Mounting Guide 19
Item Description
Hammer drill
Jigsaw
Ladder
Screwdriver
Adjustable spanner
Socket wrench set
Allen key
Water pump pliers
Spirit level
Try square

DA 820 chimney/wall outlet
20 Mounting Guide
3.2 Mounting examples
Check if the building corresponds to the drawing with regard to chimney placement, roof pitch and roof type.
Ridge mounted Side mounted
3.2.1 Long chimney
Long chimney with outside duct Long chimney with single layer duct