FK90 fire damper (FK92 series)
The FK90 rectangular fire damper, series FK92, complies with important standards and regulations. It offers a wide range of installation options. The FK90, series FK92 is also available for installation in flexible partitions. Its well thought-out design eliminates the need for maintenance to ensure continued functionality and facilitates functional tests. These can be automated and reliably logged by connecting to the Wildeboer network.
Technical details
- Complies with product standard EN 15650 and is CE marked accordingly. Has a large number of tested installation situations.
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- Maintenance-free design: Thanks to the complete encapsulation of the operation unit, release device and release element, no function-maintaining cleaning or recurring lubrication and adjustment is necessary.
- Functional test by simple opening and closing via external actuation with position indicator on site or remote-controlled.
- Can be combined with the Wildeboer-Net control system.
- EPD (Environmental Product Declaration)
- Hygiene certificate
Declarations & proofs
Product details
The square fire dampers FK90 of the FK92 series are connected to ventilation ducts in fire-resistant room-enclosing building elements, regardless of the direction of air flow, and thus reliably separate fire compartments from each other in the event of a fire. With protective grilles on both sides and in conjunction with a smoke detector, the FK90 fire damper can also be used for air transfer applications (Ü-FK).
Design of the FK90 fire damper
The extremely stable and airtight casing of the FK90 fire damper with class C according to EN 1751 is made of galvanized steel and has an abrasion-resistant and replaceable calcium silicate damper blade with a galvanized metal frame. The encapsulated release elements activate at a nominal temperature of 70 °C or 95 °C. The operation units can be manually, pneumatically or electrically actuated and are also available in an explosion-proof version.
Maintenance-free design
Due to its design, the FK90 fire damper, series FK92, does not require any maintenance to ensure continued functionality. The operation unit, the release mechanism and the release element are completely encapsulated, which means that regular lubrication is not necessary. Furthermore, there are no moving parts in the air flow of the fire damper that could become dirty. Function-maintaining cleaning is also not necessary for the FK90 fire damper. Cleaning for hygiene reasons must be carried out as part of the overall cleaning of the ventilation and air conditioning system or as required.
Servicing is therefore limited to a functional test of the fire damper in the form of triggering, complete closing and complete reopening of the fire dampers, as well as repair work in the event of damage. As the building owner or operator, you save a considerable amount of time and money.
Automated functional tests
The FK90 fire dampers can also be integrated directly via the easily configurable Wildeboer-Net communication system or connected to a building management system for easy control. This allows you, for example, to automate functional tests and document them in a verifiable manner.
Product markings of the FK90 fire damper
The maintenance-free FK90 fire dampers comply with the European product standard EN 15650, are tested in accordance with EN 1366-2 and are CE marked.
With the MPA-BS 6000/593/18 certificate for the fire behavior of the building materials used, they also meet the usage requirements of the MVV TB and M-LüAR. The FK90 can be used for a fire resistance period of 30/60/90/120 minutes.
The Wildeboer FK90 fire damper, series FK92, complies with the ATEX Directive 2014/34/EU and has been awarded an Environmental Product Declaration (EPD) and a hygiene certificate by an independent hygiene institute.
New solution for use in air transfer applications
With protective grilles on both sides and in combination with a smoke detector (OR32 or OR4), the Wildeboer FK90 fire damper can also be used for air transfer applications (Ü-FK).
Why fire dampers by Wildeboer are truly maintenance-free!
Technical specifications
The specified values for width and height are standard values. They can be produced for widths of 200 - 1500 mm and heights of 200 - 1000 mm in 5 mm increments. Not all of the variant values listed here can be combined with each other. Use our Wildeboer configurator to easily check the available options.
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Product pictures
Media & Downloads
Installation and mounting subframes FK90
- made of calcium silicate
- for simplified dry installation flexible walls cladded on both sides in shaft walls with or without metal stud
- Length of the fire damper: L = 400 mm, L = 500 mm
- made of calcium silicate for flexible walls cladded on both sides and for shaft walls with or without metal stud.
- Length of the fire damper: L = 355 mm
- made of calcium silicate for sliding ceiling connections in metal stud walls with drop up to 40 mm cladded on both sides.
- Length of the fire damper: L = 500 mm
- made of calcium silicate
- for dry installation in wooden walls and wooden ceilings and for ceilings with steel frames
- Length of the fire damper: L = 400 mm, L = 500 mm
- made of calcium silicate for direct screwing on rigid walls and ceilings.
- Particularly well-snited for restoring missing fire dampers.
- Length of the fire damper: L = 346 mm
Electrical spring return actuator
- Default actuator of FK90
- Default actuator of FR90 to DN 315
- Runtime: Opening ≈ 60 s, closing ≈ 21 s.
- CLOSED/OPEN position indicators via limit switches
- FK90: for sizes B ≤ 800 mm and H ≤ 450 mm only
- Default actuator of FK90K
- Runtime: Opening < 60 s, closing ≈ 20 s.
- CLOSED/OPEN position indicators via limit switches
Thermal-mechanical release mechanism (TMR)
- with 70°C release element
- with coated 70°C release element
- with coated 95°C release element
- optional with limit switch
FAQ
The 92 series fire dampers are maintenance-free. Due to their design and the materials used, such as the complete encapsulation of the actuator mechanics, the thermal release device, the motorized actuators, etc., they can do without ongoing maintenance work to maintain their function. Periodic lubrication, for example, is not required. Maintenance is thus limited to functional checks (triggering and reopening of the fire dampers) or repair measures in the event of damage. Hygienic cleaning must be carried out as part of the overall cleaning of the ventilation and air-conditioning system or as required.
Due to the fact that the system is maintenance-free, functional checks may also be carried out remotely. This can be carried out particularly easily and economically via the Wildeboer BS2 communication system for fire dampers with automatic calendar control.
For this purpose, the shut-off damper blade of the fire damper must be closed and opened again. The fire damper can be equipped with different release devices or with electric spring return motors for opening and closing.
For the function test, the manual release must be operated or a remote release must be performed to close the shut-off damper blade of the fire damper. Afterwards, the shut-off damper blade must be opened again.
The respective commissioning and function control measures as well as notes on operation are described in the operating instructions.
You can find our operating instructions in the download area.
When it comes to the functioning and operation of fire dampers in accordance with DIN EN 15650, there are several specifications and obligations that must be complied with. We have summarized the essentials in a document that you can view and download here.
If the fire damper cannot be opened, the fusible link sleeve or the thermoelectric fusible link must be checked for integrity. These must be in proper condition and must not show any damage. Refer to the respective operating instructions for the design and replacement.
In addition, no installed parts may obstruct or block the damper blade freewheeling.
If these measures do not work, please contact our technical support.
You will find our operating instructions in the download area.
A minimum distance to adjacent walls and ceilings is not required when installing square fire dampers from Wildeboer Bauteile GmbH. Only a small distance is required for the round fire damper FR90.
The corresponding specifications can be found in the respective user manuals.
We have summarized details on the handling of fire dampers with asbestos-containing building materials for you in this document (german).
No. The fire dampers each have two inspection openings. These allow a view into the interior of the fire damper, on both sides of the damper blade. Inspection openings can be ordered as an option for the FK90 fire damper. These do not replace openings of corresponding size, which must be provided for cleaning purposes based on relevant standards and guidelines.
Yes, the AMP connectors can be removed.
Yes. The fire dampers are equipped with an electric spring return motor or a thermal-mechanical release device (TMA) at the factory. A fire damper equipped with a TMA at the factory can be retrofitted with a spring return motor. Complete actuator units for the particular damper type are required for the retrofit. These include the motor console, the spring return motor and the electric fusible link.
Yes, it is possible to retrofit a limit position switch for both the open and closed positions of the fire damper. Spring return motors have both limit switches as standard.
An elastic connector, also called an expansion compensator or canvas connector, is suitable for installation between a ventilation duct and components of a ventilation system, e.g. a fire damper. It can absorb changes in the length of the connected duct, burn off in the event of a fire and thus prevent the transmission of force from the ventilation duct to the fire damper.
FK90, FR90 (FR92 and FR92K series) and FK90K fire dampers are CE marked construction products according to the harmonized product standard DIN EN 15650. They can be connected on one or both sides to ventilation ducts made of non-combustible or combustible building materials. In the event of fire, thermal expansion of these ducts must not exert any significant forces on the fire damper. Compensatory measures must be provided in accordance with local requirements. In Germany, the "Guideline on Fire Protection Requirements for Ventilation Systems", or "Ventilation System Guideline - LüAR" for short, contains building code requirements for implementation and necessity. In general, compensation is achieved by suitable pipe routing. There is no general requirement for the use of flexible connectors.
In addition, when using the FK90 fire damper for commercial kitchens, the specifications of the general building inspection approval Z41.3-670 must be observed. Ventilation ducts made of galvanized or stainless steel must be connected. For the installation of the ventilation duct and limitation of forces, the above-mentioned guideline must also be referred to.
In addition, ventilation ducts on FK90 fire dampers for commercial kitchens are in accordance with the building authority approval
- in metal stud walls
- in walls made of gypsum wallboards
via suitable elastic connectors (expansion compensators) made of combustible building materials, at least building material class B2 according to DIN 4102-1. An expansion allowance of ≥ 100 mm in the installed state is required.
On 01 July 2013, the European Construction Products Regulation (CPD, No. 305/2011) came into full force in all EU member states after a transitional period and replaced the Construction Products Directive (CPD, No. 89/106/EEC).
Newly produced fire dampers that fall under the harmonized product standard EN 15650 must already be marked with the CE conformity mark since 01 September 2012. Since July 01, 2013, the manufacturer has also been required to submit a declaration of performance (DoP). He thus assumes responsibility for the conformity of the fire damper with the declared performance. The declarations of performance are available for:
As a result, Deutsches Institut für Bautechnik (DIBt) may no longer issue or extend general building inspectorate approvals (abZ) for fire dampers that fall under the harmonized product standard EN 15650 and must therefore bear a CE marking. They may no longer be required as proof of usability for national construction projects.
The information required for installation and assembly is fully described in the comprehensive user manuals.
Overflow openings ensure the flow of air between two nearby rooms, e.g. for the ventilation of interior corridors and rooms or for air supply. If overflow openings are provided in fire-resistant walls or ceilings, it must be possible to close them properly. Fire dampers with a smoke release device without connection to a ventilation duct are used here. In the event of a fire, they close the opening and thus prevent the spread of fire and smoke. With the FK90 and FR90 fire damper in combination with OR4 or the OR32 smoke release device, Wildeboer offers solutions with the necessary general type approval from the German Institute for Building Technology, which is required for use in Germany.
