KA2-EU

KA2-EU with spring return actuator

Thermal release unit

Conforms to VDI 6022

KA2-EU

FOR EXTRACT AND EXHAUST AIR IN COMMERCIAL KITCHENS

Rectangular fire damper for use in extract air and exhaust air ducts of commercial kitchens. For shutting off air ducts between two fire compartments

General building inspectorate licence Z-41.3.-716
Nominal sizes:
- Width: 250 – 1200 mm in 25 mm increments
- Height: 250 – 500 mm in 25 mm increments
- Length: 580 mm – H = 400 mm; 680 mm – H = 500 mm
Large free cross-section ensures maximum safety
Low differential pressure and sound power level
Easy to clean thanks to smooth surfaces and an encased linkage
Can be integrated into the management and control equipment (MCE) with TROXNETCOM
Low-maintenance spring return actuator (1~ 230 V AC, 50 Hz, IP 54) with integrated control unit and connection casing
2 thermoelectric release units with simple plug/socket mounting
Flow-independent design
No damper blade protrusion, no extension piece required
Short closing time of 3 s in the event of a fire
Approved for daily ventilation operation in accordance with DIN EN 15650 Annex C
EPD (Environmental Product Declaration)
Hygiene certificate according to VDI 6022
Based on fire damper FK2-EU (in accordance with DIN EN 15650)
Optional dry mortarless installation with installation kit ES for a wide range of installation situations

General information

Application

TROX fire dampers for shutting off extract air and exhaust air ducts of commercial kitchens, with general building inspectorate licence
Preventing the spread of fire and the transmission of smoke through air ducts into neighbouring fire compartments

Classification

Fire resistance class: Approval K90 (ve, ho), comparable to EI 90 ve, ho, i ↔ o) S according to DIN EN 13501

Variants

With installation kit ES

Nominal sizes

Width: 250 – 1200 mm in 25 mm increments
Height: 250 – 500 mm in 25 mm increments
Length: 580 mm – H = 400 mm; 680 mm – H = 500 mm

Attachments

2 thermal release mechanisms
Z43KA Spring return actuator with integrated control unit and connection casing

Special characteristics

General building inspectorate licence Z-41.3.-716
Corresponds to DIN EN 15650:2010
Tested in accordance with DIN EN 1366-2 and the additional tests required by the DIBt

Essential components KA2-EU (at least casing and shut-off damper element): non-combustible building materials, at least class A2-s1, d0 according to DIN EN 13501-1
Building materials of the other components: at least E-d2 according to DIN EN 13501-1

Large free cross-section
Low differential pressure and sound power level
Integration into the MCE with TROXNETCOM

Parts and characteristics

Installation in horizontal and vertical air ducts
Installation orientation with any airflow direction
Large free cross-section, therefore low differential pressures
Reliable closing thanks to patented high-performance spring return actuator, even with existing deposits
Release temperature 72 °C

Construction features

Rigid rectangular casing, available in 25 mm increments
Based on the FK2-EU fire damper
Rectangular or square design, dimensionally stable frame, with perforated flange on both sides
Low-maintenance spring return actuator (1~ 230 V AC, 50 Hz, IP 54) with integrated control unit and connection casing
An extremely short closing time of 3 s minimises the risk of grease fires spreading in the event of a fire
Permitted for daily ventilation operation
2 thermoelectric release units with simple plug/socket mounting
No damper blade protrusion, no extension piece required Flow-independent design
Design in accordance with product standard DIN EN 15650 and the specifications of the DIBt
Flat, metal-coated damper blade simplifies cleaning
Manual opening by crank handle possible
Remote monitoring and integration into an MCE via TROXNETCOM systems
Optional closing by means of a push button/wall switch by interrupting the supply voltage.
Integrated limit switches for Open and Closed position
Height and width available in 25 mm increments
Connecting flanges with fixing holes on both sides, suitable for air duct connection
Locking of the actuator in the event of a fire to prevent accidental opening
Signalling of operating states via the LED on the actuator
Installation with mortar or with dry mortarless installation kit

Material and surfaces

Casing: galvanised sheet steel or optionally stainless steel 1.4301
Damper blade made of special insulating material, metalcoated, or optionally made of stainless steel 1.4301
Damper blade shaft: stainless steel 1.4301

Installation and commissioning

Install the fire damper according to the operating and installation manual.
Mortar-based installation in walls:

In solid wall
In plastered solid wall
In gypsum wallboards
In lightweight partition wall/fire wall with metal studs and cladding on both sides
In lightweight partition wall with metal stud
In lightweight partition wall with timber stud/half-timbered construction
In shaft wall with metal stud

Dry mortarless installation with KA2-EU installation kit ES in walls:

Below a flexible ceiling joint
In lightweight partition wall with metal stud
In lightweight partition wall with timber stud/half-timbered construction
In shaft wall with metal stud

Mortar-based installation into solid ceilings

Mortar-based installation into solid ceilings
Mortar-based installation into solid ceilings with concrete base

Standards, guidelines and certificates

Tested for fire resistance properties in accordance with DIN EN 1366-2 and the additional tests and requirements stipulated by the DIBt
Proven as a multi-purpose actuator in accordance with DIN EN 15650 Annex C, approved for daily ventilation operation
General building inspectorate licence Z-41.3.-716
Hygiene certificate according to VDI 6022
EPD (Environmental Product Declaration) in accordance with DIN EN ISO 14025 and DIN EN 15804
Proven corrosion protection according to DIN EN 15650 in connection with DIN EN 60068-2-52

Maintenance

At the initiative of the owner of the ventilation system, the function of the fire damper must be checked at least every six months in accordance with the specifications of VDI 2052, taking into account the basic maintenance measures in accordance with DIN EN 13306 in conjunction with DIN 31051. If two consecutive tests at intervals of 6 months do not reveal any functional defects, the fire damper only needs to be checked once a year.
In general, closing and reopening is sufficient, with spring return actuator also remotely operated or by means of a voltage interruption
Fire dampers must be included in the regular cleaning schedule for the ventilation and air conditioning system. For details on maintenance and inspection, please refer to the installation and operating manual

Technical information

1 KA2-EU
2 Spring return actuator with integrated limit switches
3 Thermal release unit
4 Connection casing
5 Crank handle
6 Position indicator

Functional description

Type KA2-EU fire dampers close off extract air and exhaust air ducts in commercial kitchens and prevent the spread of fire and smoke via air ducts into adjacent fire compartments. In standard operation, the fire damper is in the Open position. This is made possible by the electrically operated spring return actuator, which enables the motorised opening of fire damper. The spring return actuator also enables the fire damper to be activated by the management and control equipment (MCE) during maintenance work and functional checks. In the event of a fire, one of the two thermoelectric release units is triggered. From a trigger temperature of 72 °C, the damper blade closes the fire damper within 3 seconds. In addition, an interruption in the supply voltage also causes the fire damper to close. The closing process is based on the fail-safe principle. The control system of the spring return actuator differentiates between a fire and other interruptions. The limit switch signal can also be used to close other KA2-EU units. The signal on leaving the Open end position can be used to switch off the supply voltage to other fire dampers. Fire dampers that are further away from the fire then close within 10 seconds. TROXNETCOM offers further solutions. Limit switches can be used for position indication. When leaving the Open position, the signal from the Open limit switch must be used to switch off the fan.

Nominal sizes	250 × 250 to 1200 × 500 mm
Volume flow rate range	up to 4500 l/s or 16200 m³/h
Operating temperature	10 – 50 °C
Release temperature	72 °C
Maximum upstream velocity	≤ 7.5 m/s

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Specification text

Fire dampers with a general building inspectorate licence and a fire resistance duration of 90 min for shutting off extract and exhaust air ducts in commercial kitchens in the event of a fire. Reliable closing thanks to the low-maintenance spring return actuator, even with existing deposits. Tested for fire resistance properties in accordance with DIN EN 1366-2. Airtight casing, tightness class B in accordance with DIN EN 1751, made of galvanised sheet steel, optionally made of stainless steel; flowindependent design. Shut-off damper blade made of special insulating material, metal-coated, airtight closing. With 2 compact thermal release mechanisms 72 °C, 2 electrical limit switches to indicate damper position CLOSED or OPEN, fan switch-off and integration into the MCE. Control unit and connection casing with plug/socket connection integrated in the spring return actuator. Designed for 10000 cycles and a closing time of 3 s in the event of fire and 10 s in ventilation mode. Suitable for mortar-based and dry mortarless installation in solid walls or ceilings, shaft walls with metal studs, lightweight partition walls with metal or wooden studs and connection to horizontal and vertical air ducts with a connecting flange.

Classification

Fire resistance class: Approval K90 (ve, ho), comparable to EI 90 (ve, ho, i ↔ o) S according to DIN EN 13501

Material and surfaces

Casing: galvanised sheet steel or optionally stainless steel 1.4301
Damper blade made of special insulating material, metalcoated, or optionally made of stainless steel 1.4301
Damper blade shaft: stainless steel 1.4301

Technical data

Nominal sizes: 250 × 250 – 1200 × 500 mm
Volume flow range: 16200 m³/h
Operating temperature: 10 – 50 °C
Release temperature: 72 °C
Maximum upstream velocity: ≤ 7.5 m/s

Standards, guidelines and certificates

Tested for fire resistance properties in accordance with DIN EN 1366-2 and the additional tests and requirements stipulated by the DIBt
Proven as a multi-purpose actuator in accordance with DIN EN 15650 Annex C, approved for daily ventilation operation
General building inspectorate licence Z-41.3.-716
Hygiene certificate according to VDI 6022
EPD (Environmental Product Declaration) in accordance with DIN EN ISO 14025 and DIN EN 15804
Proven corrosion protection according to DIN EN 15650 in connection with DIN EN 60068-2-52

Nominal sizes

Width: 250 – 1200 mm in 25 mm increments
Height: 250 – 500 mm in 25 mm increments
Length: 580 mm – H = 400 mm; 680 mm – H = 500 mm

Attachments

2 thermal release mechanisms
Z43KA Spring return actuator with integrated control unit and connection casing

Zubehör

Dry mortarless installation kit

Equivalence criteria

Free cross-section at least 70 % of the nominal size
Smooth inner surfaces without grooves to prevent deposits
Low-maintenance spring return actuator with integrated control unit and connection casing
Independent of air direction - air flow in both directions without extension piece with flow guide device
10,000 cycles in accordance with DIN EN 15650, Annex C 3.2, approved for daily ventilation operation
CE marking in accordance with the EC Declaration of Conformity, within the meaning of the Machinery Directive 2006/42 EC as a complete machine

Manufacturer

TROX SE

Type: KA2-EU

KA2-EU

–

500 × 500 × 680

Z43KA

1 Type

KA2-EU Fire damper for the extract air of commercial kitchens

2 Construction

No entry: standard construction

2 Stainless steel casing

3 Country of destination

Specify country code

4 Nominal size [mm]

Specify width × height × length

5 Accessories

No entry: without accessories

ES Installation kit for dry mortarless installation

6 Attachment

Z43KA Spring return actuator 230 V

Order example: KA2-EU-2/DE/500×500×680/ES/Z43KA

Type	KA2-EU – Fire damper for the extract air of commercial kitchens
Construction	Stainless steel casing
Country of destination	Germany
Nominal size [mm]	Width 500, height 500, length 680
Accessories	Installation kit for dry mortarless installation
Attachment	Spring return actuator 230 V

Downloads

product information

Product data sheet KA2-EU

KA2-EU_PD_2025_05_08_DE_en Product data sheet 430 KB pdf

certificates

Environmental Product Declaration KA2-EU

KA2-EU_EPD_2025_03_DE_en Environmental product Declaration 1,4 MB pdf

operation manuals

Installation and operating manual-KA2-EU

KA2-EU_IOM_CD10090_V1_2025_05_GB_en Installation and operating manual 7,7 MB pdf

By clicking the button, you allow us to provide you with an excellent website experience and easy shopping processes. These cookies include ones that are necessary for the operation of the site and for the control of our services and applications, as well as ones that are used solely for statistical purposes, for convenience settings or to display personalized content. You can decide which categories you want to allow and you can adjust the data utilisation settings based on your individual requirements. Please note that, depending on the settings that you have selected, all functionalities of the page might not be available. You can change your selection at any time.

TECHNICALLY NECESSARY

These cookies are necessary for the proper functioning of our website and cannot be disabled. As a rule, these cookies are set only in response to actions taken by you, such as setting your privacy preferences or filling the shopping cart. In addition, security-relevant functionalities or support via a dedicated webchat are integrated, including all session cookies from TROX set after you log in as a customer. You can set your browser to block these cookies or notify you about them. As a result, however, some areas of the website might not function as intended.

STATISTICS AND WEBSITE ANALYSIS

These cookies make it possible to collect data for statistics and analysis so that TROX can measure the performance of the websites visited, identify technical problems and find starting points for optimisation. They may be set by us or by third parties whose services we use on our sites. Users also help to identify, for example, which pages are used most frequently or only rarely or how people navigate between web pages. All information used by third parties is aggregated and anonymised.

KA2-EU

FOR EXTRACT AND EXHAUST AIR IN COMMERCIAL KITCHENS

General information

Technical information

Downloads

product information

Product data sheet KA2-EU

certificates

Environmental Product Declaration KA2-EU

operation manuals

Installation and operating manual-KA2-EU

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE