CU-LT - Installation

The product was tested and approved in:

• Aerated concrete ≥ 100 mm | EI 90 (v_e i o) S - (500 Pa) | Mortar | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 120 (v_e i o) S - (500 Pa) | Gypsum | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Reinforced concrete ≥ 110 mm | EI 90 (h_o i o) S - (500 Pa) | Mortar | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Reinforced concrete ≥ 150 mm | EI 120 (h_o i o) S - (500 Pa) | Gypsum | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The dampers can be installed at a minimum distance from an adjacent floor/ceiling (≥ 25 mm), from an adjacent wall or from another damper (≥ 50 mm).

Make the necessary openings (Wn + 100 mm) x (Hn + 100 mm) in the wall.

Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.
This sealing is applied over the whole width/height of the damper(s).
When the damper is installed at a distance of 25 mm from a floor/ceiling, the rigid high-density stone wool panels may be replaced with standard ≥ 40 kg/m³ stone wool (e.g. Rockfit 431), compressed by at least 40%.

Seal the rest of the opening with standard mortar or gypsum.

The product was tested and approved in:

• Aerated concrete ≥ 105 mm | EI 90 (v_e i o) S - (300 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 90 (v_e i o) S - (500 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270° | 200x100 mm ≤ CU-LT ≤ 800x600 mm

If the wall is ≥ 105 mm thick, the fire damper may be placed at minimum distance from the ceiling/floor slab.

If the wall is ≥ 105 mm thick, the fire dampers may be placed at a minimum distance from each other and from the ceiling/floor slab.

The product was tested and approved in:

• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (500 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270° | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 90 (v_e i o) S - (500 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270° | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The product was tested and approved in:

• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (500 Pa) | Gypsum | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 90 (v_e i o) S - (500 Pa) | Gypsum | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The dampers can be installed at a minimum distance from an adjacent floor/ceiling (≥ 25 mm), from an adjacent wall or from another damper (≥ 50 mm).

Build the drywall and mount horizontal and vertical studs around the opening.
When installing a single fire damper at a shorter distance from the ceiling, it is not necessary, from a fire engineering point of view, to provide profiles around the fire damper.

Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.
This sealing is applied over the whole width/height of the damper(s).
When the damper is installed at a distance of 25 mm from a floor/ceiling, the rigid high-density stone wool panels may be replaced with standard ≥ 40 kg/m³ stone wool (e.g. Rockfit 431), compressed by at least 40%.

Seal the rest of the opening (50 mm) with standard gypsum across the entire wall thickness.

The product was tested and approved in:

• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (300 Pa) | Mortar | Type of installation: built-in 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Mortar | Type of installation: built-in 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The dampers can be installed at a minimum distance from an adjacent floor/ceiling (≥ 25 mm), from an adjacent wall or from another damper (≥ 50 mm).

Build the drywall and mount horizontal and vertical studs around the opening.
When installing a single fire damper at a shorter distance from the ceiling, it is not necessary, from a fire engineering point of view, to provide profiles around the fire damper.

Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.
This sealing is applied over the whole width/height of the damper(s).
When the damper is installed at a distance of 25 mm from a floor/ceiling, the rigid high-density stone wool panels may be replaced with standard ≥ 40 kg/m³ stone wool (e.g. Rockfit 431), compressed by at least 40%.

Seal the rest of the opening (50 mm) with standard mortar across the entire wall thickness.

The product was tested and approved in:

Interrupt the sliding connection (C) of the wall on a length of Wn + 120 mm. In the remaining width of the opening, add gypsum plasterboards to reach 5 layers of 12.5 mm (or a total of 60 mm) at both sides of the fire damper. Attach 4 threaded rods (diameter ≥ 8 mm) to the ceiling at a distance of Wn + 10 mm. The distance between the rods and the wall is mentioned on picture 4.

If the fire damper with GDA is mounted at a distance from the ceiling, add layers of fire-resistant gypsum plasterboards (type F) to reach a maximum distance of 75 mm from the ceiling: ‘E’ boards in the opening, with a width of 100 mm, and ‘F’ boards in the remaining width of the opening, with a width of 50 mm.

Lay a strip of stone wool (40 kg/m³) ‘A’ with dimensions 40 x 100 x (Wn + 120) mm on top of the GDA. Suspend the fire damper to the rods that hang from the ceiling by means of nuts and U-shaped suspension profiles (B).

Tighten the nuts until the GDA comes up to the ceiling.

Prepare gypsum plasterboards that come to the edge of the GDA and fasten them with screws to the flange on 3 sides of the GDA. Fasten the plasterboards to the wall with screws, in compliance with the specifications of the wall system manufacturer.

Use the sealing material specified by the wall manufacturer to seal the connection between the fire damper and the wall.

The product was tested and approved in:

• Metal studs gypsum plasterboard Type A (EN 520) ≥ 75 mm | EI 30 (v_e i o) S - (500 Pa) | Gypsum | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The dampers can be installed at a minimum distance (≥ 50 mm) from a ceiling or floor slab.

The product was tested and approved in:

• Metal studs gypsum plasterboard Type F (EN 520) ≥ 75 mm | EI 30 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The opening around the damper is sealed with 2 hard rock wool slabs of 50 mm. These boards should be placed in a slanted position and the joints should be covered all around with filling paste.

The damper does not need to be centered in the opening (with max dimensions Wn x Hn fire damper + 800 mm). The maximal distance between the damper and the edge of the opening is 400 mm.

The dampers can be installed at a minimum distance (≥ 50 mm) from a ceiling or floor slab.

The product was tested and approved in:

• Metal studs gypsum plasterboard Type F (EN 520) ≥ 90 mm | EI 90 (v_e i o) S - (300 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

Depending on the shaft wall system, the cladding is 15 or 20mm thick.
Suitable for installation in shaft walls with cementitious fibreboards and calcium silicate boards.
See manufacturer's instructions for EI90 walls.

Alternatively, the aperture framing can also be stepped.

The fire damper may be placed at minimum distance from the ceiling/floor slab.

Alternatively, the aperture framing can also be stepped.

Fill the gap between the top of the damper and the floor slab with mineral wool.

The fire dampers may be placed at minimum distance from each other and from the ceiling/floor slab.

The product was tested and approved in:

• Cross-laminated timber ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Installation kit IFW | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

Saw out the installation opening on site if not provided.

For a wall thickness > 100 mm, it is recommended to provide a longer version of the fire damper (CU-LT-L500). The installation method remains unchanged.

The fire damper may be placed at minimum distance from the ceiling/floor slab.

The fire dampers may be placed at minimum distance from each other and from the ceiling/floor slab.

The product was tested and approved in:

• Aerated concrete ≥ 100 mm | EI 120 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ + coated casing | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 120 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ + coated casing | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

For a flexible wall, provide profiles around the opening. Exception: for fire resistance EI60S and for sealing with hard rock wool boards of the Promastop or Hilti type, it is not necessary, from a fire engineering point of view, to provide these additional profiles.

The opening around the damper is sealed with 2 layers of 50 mm-thick mineral wool panels with fire resistant coating on one side (type PROMASTOP-CB 50 / PROMASTOP-CB/CC 50 / HILTI CFS-CT B / Mulcol Multimastic FB1 / PYRO-SAFE® MFP).
EI120S only possible with Hilti or Promat material.

The joints on these 2 layers must be installed staggered and covered all around the edge with coating (type PROMASTOP-CC / HILTI CFS-S-ACR / Mulcol Multimastic SP / PYRO-SAFE® FLAMMOTECT-A).

For EI 120 S, the casing of the fire damper must be covered with a layer (> 1 mm) of coating (type PROMASTOP-CC / HILTI CFS-CT).
Also apply this coating for EI 60 S if no metal stud profiles were provided around the opening.

The damper does not need to be centered in the opening (with max dimensions fire damper + 600 mm). The maximal distance between the damper and the edge of the opening is 400 mm.

The dampers can be installed at a minimum distance from an adjacent floor/ceiling (≥ 25 mm), from an adjacent wall or from another damper (≥ 50 mm).

Build the drywall and mount horizontal and vertical studs around the opening.
When installing a single fire damper at a shorter distance from the ceiling, it is not necessary, from a fire technical point of view, to provide profiles around the fire damper in case of desired fire resistance EI60S.

Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.
This sealing is applied over the whole width/height of the damper(s).
When the damper is installed at a distance of 25 mm from a floor/ceiling, the rigid high-density stone wool panels may be replaced with standard ≥ 40 kg/m³ stone wool (e.g. Rockfit 431), compressed by at least 40%.

Seal the rest of the opening with 2 layers of 50 mm-thick coated rigid mineral wool panels (see above).

When installing a single fire damper at a shorter distance from the ceiling: for desired fire resistance EI60S and installation without profiles around the fire damper: apply the coating also to the tunnel of the fire damper.

The product was tested and approved in:

• Aerated concrete ≥ 150 mm | EI 120 (h_o i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ + coated casing | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 150 mm | EI 90 (h_o i o) S - (300 Pa) | Stone wool + coating ≥ 140 kg/m³ | Type of installation: built-in 0/90/180/270°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

The opening around the damper is sealed with 2 layers of 50 mm-thick mineral wool panels with fire resistant coating on one side (type PROMASTOP-CB 50 / PROMASTOP-CB/CC 50 / HILTI CFS-CT B).

The joints on these 2 layers must be installed staggered and covered all around the edge with coating (type PROMASTOP-CC / HILTI CFS-S-ACR).

For EI 120 S, the casing of the fire damper must be covered with a layer (> 1 mm) of coating (type PROMASTOP-CC / HILTI CFS-CT).
(only for 120 minutes)

The damper does not need to be centered in the opening (with max dimensions fire damper + 600 mm). The maximal distance between the damper and the edge of the opening is 400 mm.

The dampers can be installed at a minimum distance from an adjacent wall or from another damper (≥ 50 mm).
For details, please refer to 'Installation in flexible and rigid wall, sealing with rigid rock wool boards with coating'

The product was tested and approved in:

• Aerated concrete ≥ 100 mm | EI 60 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 1x60 mm + installation kit IFW | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 1x80 mm + IFW installation kit | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm + installation kit IFW | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 1x60 mm + installation kit IFW | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm | EI 60 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm + installation kit IFW | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm | EI 90 (v_e i o) S - (300 Pa) | Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm + installation kit IFW | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

An opening with maximal dimensions “A” is made in the wall. For a light partition wall, follow the wall assembly under “Installation in flexible or rigid wall - Sealing with fire resistant rigid panels of stone wool“.

The fire damper is equipped with the IFW kit and mounted remote from the wall at the end of a metal duct. The duct is supported every 1500 mm as well as underneath the damper.
The suspensions consist of threaded rods “C” and U-shaped steel profiles “D”. A free space of maximum 25 mm is left between the threaded rods and the vertical walls of the stone wool casing “B”.

The opening around the duct is sealed with stone wool plates type Promastop CB(/CC) / Hilti CFS-CT B (“G”). The edges are sealed and maintained in place with PROMASTOP-CC / HILTI CFS-S ACR coating.

The duct is covered over its entire length with stone wool plates “G”. To adhere to the duct, the plates are completely coated on one side with fire resitant coating and affixed to the duct with steel screws and washers “E”.
The damper casing is covered with stone wool plates “G” for 150 mm. A free space is left around the mechanism to allow access.
The joints between the plates, between the wall and the plates as well as the screws and washers are filled with coating PROMASTOP-CC / HILTI CFS-S ACR.

An additional mineral wool panel with width “B” and height 100 mm, coated with PROMASTOP-CC / HILTI CFS-S ACR, is applied where the stone wool casing meets the sealing of the wall opening.

The dampers can be installed at a minimum distance from an adjacent floor/ceiling, from an adjacent wall or from another damper.

Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.
When the distance between the damper and the wall is greater than 75 mm, the sealing of the opening between the damper and the wall is carried out according to the pre-existing classification.

The product was tested and approved in:

• Aerated concrete ≥ 100 mm | EI 120 (v_e i o) S - (500 Pa) | Galvanised duct + GEOFLAM® F 45 mm + mortar | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm
• Aerated concrete ≥ 100 mm | EI 120 (v_e i o) S - (500 Pa) | Galvanised duct + GEOFLAM® Light 35 mm + mortar | Type of installation: remote from the wall, 0/180°. Minimal distances authorised. | 200x100 mm ≤ CU-LT ≤ 800x600 mm

An opening with maximal dimensions “A” is made in the wall.

The fire damper is mounted remote from the wall at the end of a metal duct. The duct is supported every 1000 mm.
The suspensions consist of threaded rods “C” and U-shaped steel profiles “D”. A free space of maximum 25 mm is left between the threaded rods and the vertical walls of the casing “B”.

The opening around the duct is sealed with standard mortar. The duct is covered with 45 mm thick GEOFLAM F plates or 35 mm thick GEOFLAM Light plates "G”.
The plates adhere to each other with glue and fibrous plaster “E”. The damper casing is also covered on a length of 120 mm.

The GEOFLAM F plates stop at a distance of 15 mm from the wall. The free space is filled with fibrous plaster.
The same filling is applied to seal off the connection between the GEOFLAM F plates and the damper casing.

The threaded rods are covered with U-shaped plates of GEOFLAM (Ø 90 mm) and affixed with glue and fibrous plaster.
The profiles are covered with U-shaped shells GEOFLAM 100 x 60 mm, which are affixed to the underside of the shaft with GEOCOL (GEOSTAFF) cement plaster.

The dampers can be installed at a minimum distance from an adjacent floor/ceiling (≥ 25 mm), from an adjacent wall or from another damper (≥ 50 mm).

Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of 400 mm (150 mm on the mechanism side of the wall) to seal the opening at the side with minimal distances.

• The installation must comply with the installation manual and the classification report.
• Axis orientation: see the declaration of performance.
• Avoid obstruction of adjoining ducts.
• Product installation: always with closed damper blade.
• Verify if the blade can move freely.
• Please observe safety distances with respect to other construction elements. The operating mechanism must also remain accessible: allow for a clearance of 200 mm around the housing.
• The air tightness class will be maintained if the damper is installed according to the installation manual.
• Rf-t fire dampers are always tested in standardised constructions according to EN 1366-2. The achieved results are valid for similar supporting constructions with a fire resistance, thickness and density equal or superior to the supporting construction used during the test.
• If the wall thickness exceeds the minimum thickness specified in our installation instructions, the following conditions apply to the sealing depth: - For flexible walls and sandwich panel system walls, the seal must always be applied over the full depth of the wall. - With rigid walls, rigid floors and plaster block walls, the minimum sealing depth as indicated in our installation instructions (often equal to the minimum wall thickness) is sufficient. Apply the seal at the height of the damper blade (from the wall limit indication).
• When installing a fire damper in a flexible metal stud wall, some installation methods do not require reinforcing profiles around the wall opening from a fire protection point of view (see below). Always follow the general instructions of the manufacturer of these wall systems when building this type of wall.
• The damper must remain accessible for inspection and maintenance.
• Schedule at least 2 visual checks each year.