BLAUBERG BlauFast User manual

INSTALLATION INSTRUCTION
Modular air distribution system

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CONTENTS
Typical configuration ...............................................................................................................................................................................................3
Mounting recommendations for supply and exhaust diffusers .................................................................................................... 4
Recommendations on calculation of slab thickness ...................................................................................................................6
Plastic air distribution boxes for oval ducts ...............................................................................................................................................7
Plastic air distribution boxes for round ducts ...........................................................................................................................................9
Metal air distribution boxes .............................................................................................................................................................................. 11
Plastic ceiling connectors for round ducts .............................................................................................................................................. 15
Mounting of the connector in the floor slab ................................................................................................................................ 15
Ceiling mounting of the connector ................................................................................................................................................... 17
Plastic ceiling connectors for oval ducts ................................................................................................................................................. 20
Mounting of the connector in the floor slab ................................................................................................................................ 20
Ceiling mounting of the connector .................................................................................................................................................. 22
Ceiling-mounted metal connectors .......................................................................................................................................................... 24
Ceiling mounting of the connector .................................................................................................................................................... 24
Plastic floor-mounted connector for oval ducts .................................................................................................................................26
Mounting the connector on top of the slab into the thickness of the floor insulation .................................... 26
Floor-mounted metal connectors ............................................................................................................................................................... 28
Mounting of the connector into the slab with concrete casting ..................................................................................... 28
Ventilation grille mounting ............................................................................................................................................................................... 30
Wall-mounted metal connector ................................................................................................................................................................... 32
adapter sleeve BlauFast-BlauPlast .................................................................................................................................................................. 34
air duct BlauFast ........................................................................................................................................................................................................ 36
Flexible insulated air duct BlauFlex Iso ...................................................................................................................................................... 38
Joining of flexible insulated air ducts ................................................................................................................................................. 39
Commissioning of the ventilation system................................................................................................................................................ 40
Air flow control ......................................................................................................................................................................................................... 42
Air flow rate control with a disc valve.................................................................................................................................................. 42
Air flow regulation by means of installing the air throttling damper into the air distribution box.............. 42
Air flow regulation by means of installing the air throttling damper into the connector ................................ 43
Air flow control in the connector with a rectangular air throttling damper............................................................... 45
Air flow control in the connector with a circular air throttling damper ....................................................................... 46
Technical maintenance ....................................................................................................................................................................................... 47

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TYPICAL CONFIGURATION
Connector pipe
4
Plastic air distribution box
5
Ceiling-mounted plastic
connector
2
Round duct
3
6
Floor-mounted connector Extract air disc valve
9
Flexible insulated air duct
8
Floor-mounted grille
7
9
9
5
5
2
6
2
6
9
6 10
8
2
1
6
10
Outer ventilation hood
Air handling unit with
heat recovery
1
5
5
4
4
4
7
7
7
7

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MOUNTING RECOMMENDATIONS FOR SUPPLY AND EXHAUST DIFFUSERS
• When selecting supply and exhaust grilles and disk valves it is necessary to take into account the following factors:
• Noise level.
• Air flow.
• Expansion of the air jet.
Mounting recommendations for supply grilles and disk valves
• Depending on the air jet spread the supply grilles and disk valves can be mounted on the ceiling, on the wall, or in the floor
near inner or outer walls.
• If the supply grilles are mounted in the floor it is recommended to install a floor heating system to avoid the effect of “a local
cold air lake”.
• The distance to the occupied space should be not less than 1 m.
• Supplying air to the occupied area may cause draughts.To avoid this, it is necessary to provide low air jet speed.The temperature
of the air jet should be close to the air temperature in the room.
• It is forbidden to mount supply grilles and disk valves behind the curtains, wardrobes, beams.
• The distance from supply disk valves to the corners of a room should be not less than 500 mm in order to avoid uncomfortable
conditions caused by an air jet.
• Supply grilles can be positioned closer, depending on the type of air jet.
Mounting recommendations for exhaust grilles and air disk valves
• Exhaust grilles and disk valves should be mounted on the ceiling or on the wall as high as possible.
• The distance to the corners of a room should be not less than 200 mm.
• Exhaust ventilation elements must be installed close to the source of contaminants such as moisture and odours.
• At the same time, it is not recommended to install exhaust grilles and disk valves above a bath or a shower.
• It is not recommended to install exhaust ventilation elements directly above radiators. It can lead to unnecessary heat losses.
• Do not install the exhaust ventilation element directly over the cooker in the kitchen, as this will result in grease entering the
ventilation system.
• If the air in the room contains a lot of sprayed grease particles, it is recommended to use exhaust elements with built-in
replaceable filters.
Recommendations for the positioning of supply and exhaust air diusers
Air extraction Air supply
Kitchen Hallway
Bathroom Dining room
WC Bedroom
Storage area Nursery
Laundry Office
Sauna Living room

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Exhaust grille location Supply air disk valve location
20 cm 20 cm 50 cm 50 cm
Recommendations on positioning of supply and exhaust grilles
Air extraction
Air supply

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Recommendations on calculation of slab thickness
≥ 3xDN DN
d
d2DNd1
Minimum thickness of a steel-reinforced concrete slab with air ducts containing combustible components according to DIN 4120
Design features
Fire resistance class
One family house
F 0
Low-rise buildings
F 30-A
High-rise buildings
from 5 storeys
F 90-A
d1 d2 d1 d2 d1 d2
Min. depth for air duct installation* [mm] 50 50 50
Min. slab [mm] 50 50 50
Min. recommended thickness without taking into
account the crossing of wires through corrugated
pipes for electrical wiring [mm]
d = 180 d = 220 d = 240
d = 200 d = 240 d = 260
DN - Ø 63, 75 or 90 mm air duct
The data in the table also applies to installation in a monolithic slab.
*The data is only valid for the installation of a seamless screed on an insulated base (floating floor) with a minimum thickness of
25 mm.

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PLASTIC AIR DISTRIBUTION BOXES FOR OVAL DUCTS
The air distribution box is designed for wall, floor, and ceiling mounting.
1Fix the air distribution box to the mounting surface.
Fasteners to be purchased separately. While choosing
fasteners consider the material of the mounting surface and
the unit weight.
2Lay the air ducts by securing them to the surface with
mounting tape.
3Put two seals on each end of the air ducts from the
flange connection side.
Put two seals on the plug.

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4Insert the ducts into the flanges. 5Cover the unused flanges with plugs (not included in
the delivery set).
WARNING! If the ducts are to be covered with concrete, make sure to provide extra sealing for the joint
between the duct and the flange and the joint between the flange and the plug using a cold shrink tape.
6Secure the air ducts and plugs on both sides with
universal locks.
7Connect the main air duct to the corresponding
spigot of the air distribution box.

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PLASTIC AIR DISTRIBUTION BOXES FOR ROUND DUCTS
The air distribution box is designed for wall, floor, and ceiling mounting.
1Fix the air distribution box to the mounting surface.
Fasteners to be purchased separately. While choosing
fasteners consider the material of the mounting surface and
the unit weight.
2Lay the air ducts by securing them to the surface with
mounting tape.
3Place two seals on each duct end on the flange
connection side.

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4Insert the ducts into the flanges. 5Cover the unused flanges with plugs (not included in
the delivery set).
WARNING! If the ducts are to be covered with concrete, make sure to provide extra sealing for the joint
between the duct and the flange and the joint between the flange and the plug using a cold shrink tape.
6Secure each duct and each plug on both sides with
universal locks.
7Connect the main air duct to the corresponding
spigot of the air distribution box.

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METAL AIR DISTRIBUTION BOXES
1PREPARATION FOR MOUNTING
If the air distribution box design enables changing location of the spigot, proceed as follows:
1. Unscrew the service panel and the spigot and disconnect
these from the air distribution box.
2. Change location of the spigot and the service
panel and fix them with screws to the casing of the air
distribution box.
Reinstall the plugs (included in the delivery set) depending on the way of mounting of the air distribution box:
3. Remove the plugs from the surface, to which the flanges will
be connected.
4. Place the removed plugs on a surface that will not
be used for flange connection (see "Mounting of plugs").

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2INSTALLATION OF A METAL AIR DISTRIBUTION BOX ON THE MOUNTING SURFACE
The air distribution box is designed for wall, floor, and ceiling mounting.
Fix the air distribution box to the mounting surface using bolts or threaded rods (not included in the delivery set).
While choosing fasteners consider the material of the mounting surface and the unit weight.
3MOUNTING OF PLUGS PRF 63, PRF 75, PRF 90
Before installation, make sure that the plugs are sealed.
Install the plugs into the openings not to be used for flange connection.
Insert the plug into the slotted hole and turn it clockwise so that the closed lock symbol on the plug is opposite the arrow
on the casing.

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4a MOUNTING OF FLANGES RKF 63, RKF 75
Before installation, make sure that the anges are sealed.
Insert the flange into the slotted hole so that the open lock symbol on the flange is opposite the arrow on the casing. To
secure in the hole, simultaneously press the lock in the flange towards the inner wall face and rotate the flange clockwise so that
the closed lock on the flange faces the arrow on the casing.
4b MOUNTING OF FLANGES RKF 90
Before installation, make sure that the anges are sealed.
Insert the flange into the slotted hole so that the image of the open lock on the flange is opposite the mark on the casing. To
fix it in the hole, simultaneously bend the lock in the flange away from the inner surface of the wall and turn the flange clockwise
so that the image of the closed lock on the flange is opposite the mark on the casing.

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5CONNECTION OF SEMI-RIGID DUCTS
Place two seals on each duct end on the flange connection side.
WARNING! If the ducts are to be covered with concrete, make sure to provide extra sealing for the joint between the
duct and the ange and the joint between the ange and the plug using a cold shrink tape.
Fixing the air ducts with a lock ring
1. Remove the lock ring (supplied with the flange). 2. Insert the air duct with the sealing ring into the flange.
3. Secure the duct using the lock ring.
Fixing the air ducts with a universal lock
1. Insert the air duct with the sealing ring into the flange. 2. Secure the duct with a universal lock.

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PLASTIC CEILING CONNECTORS FOR ROUND DUCTS
Mounting of the connector in the oor slab
1Drill a 130 mm hole in the non-removable slab
formwork for a 125 mm spigot of the connector.
2Install and fix the connector.
Fill the gaps between the spigot and the formwork surface
with sealant (mounting foam).

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3Lay the ducts, securing them to the formwork with
masking tape if necessary.
4Place two seals on each duct end on the flange
connection side.
WARNING! Before the ducts are covered with concrete, make sure to provide extra sealing for the joint between the
duct and the ange and the joint between the ange and the plug using a cold shrink tape.
5Insert the air ducts with the sealing rings into the
flanges.
Secure the ducts in the flanges on both sides using the
universal locks (included in the connector delivery set).
6Close the unused flanges with plugs.
Secure the plugs in the flanges on both sides using the
universal locks (included in the connector delivery set).

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Ceiling mounting of the connector
1Use the connector casing to mark and drill holes for
fixing.
2Fasten the connector to the ceiling.
While choosing fasteners (to be purchased separately)
consider the material of the mounting surface as well as the
weigh of the unit.
3Lay the air ducts by securing them under the ceiling
with mounting tape.
4Place two seals on each duct end on the flange
connection side.

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5Insert the air ducts with the sealing rings into the
flanges.
6Secure the ducts in the flanges on both sides using
the universal locks.
7Close the unused flanges with plugs. 8Secure the plugs in the flanges on both sides using
the universal locks (included in the flange delivery set).

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9Mount the false ceiling and prepare a hole in it for the
connector outlet.
10 Cut the protruding part of the spigot flush with the
ceiling, protecting the surface from damage with cutting
tools.
11 After finishing work, install the air disc valves (not
included in the delivery set).

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PLASTIC CEILING CONNECTORS FOR OVAL DUCTS
Mounting of the connector in the oor slab
1Drill a Ø 130 mm hole in the floor slab for a Ø 125 mm
connector spigot outlet.
2Install and fix the connector.
Fill the gaps between the spigot and the slab with sealant
(mounting foam).