FKS-EU with spring return actuator

Tested to VDI 6022

With TROXNETCOM as an option

CE compliant according to European regulations

FKS-EU with fusible link for 72 °C or 95 °C

Type FKS-EU

Compact dimensions, ideal for restricted spaces

Small rectangular fire damper for the isolation of duct penetrations between fire compartments, available in many sizes

Nominal sizes 200 × 100 to 800 × 200 mm
Low differential pressure and sound power level
Optional stainless steel casing or powder-coated casing for increased corrosion protection
Can also be used as an air transfer damper or air transfer unit
Integration into the central BMS with TROXNETCOM
Universal installation options

Optional equipment and accessories

Electric actuator 24 V/230 V
Release temperature 72/95 °C
Duct smoke detectors

Application

Application

Fire dampers of Type FKS-EU, with CE marking and declaration of performance, for the isolation of duct penetrations between fire compartments in the event of a fire
To prevent the propagation of fire and smoke through ductwork to adjacent designated fire compartments

Special characteristics

Declaration of performance according to Construction Products Regulation
Classification to EN 13501-3, up to EI 120 (v_e, h_o, i ↔ o) S
Building inspectorate licence Z-56.4212-991 for fire resistance properties
Complies with the requirements of EN 15650
Tested to EN 1366-2 for fire resistance properties
Hygiene complies with VDI 6022 part 1 (07/2011), VDI 3803 (10/2002), DIN 1946 part 4 (12/2008), and EN 13779 (09/2007)
Corrosion protection according to EN 15650 in connection with EN 60068-2-52
Closed blade air leakage to EN 1751, class 2
Casing air leakage to EN 1751, class C
Low differential pressure and sound power level
Any airflow direction
Integration into the central BMS with TROXNETCOM

Classification

Class of performance to EN 13501-3, up to EI 120 (v_e, h_o, i ↔ o) S

Nominal sizes

B × H: 200 × 100 – 800 × 200 mm (width in increments of 50 mm)
L: 300 mm

Description

Variants

With fusible link
With spring return actuator
With cover grilles both ends as air transfer unit with general building inspectorate licence: Z-19.18-2127
With spring return actuator and duct smoke detector
With spring return actuator, duct smoke detector and cover grilles on both ends for use as an air transfer opening, with general building inspectorate licence Z-6.50-2231

Parts and characteristics

Easy dry mortarless installation into solid walls and ceiling slabs, lightweight partition walls, fire walls and shaft walls using an installation block
Release temperature 72 °C or 95 °C (for use in warm air ventilation systems)

Attachments

Limit switch for damper blade position indication
Spring return actuator for 24 V AC/DC or 230 V AC supply voltage
Network module for the integration with AS-i or LON networks
Spring return actuator and pre-wired duct smoke detector, 24 V or 230 V supply voltage

Accessories

Cover plate (to keep the fire damper stable and hence facilitate mortaring)
Cover grille
Flexible connectors
Extension piece
Rectangular installation block E

Useful additions

Duct smoke detector RM-O-3-D
Duct smoke detector with airflow monitor RM-O-VS-D

Construction features

Rectangular or square construction, rigid casing, both flanges with fixing holes (System 30)
Suitable for the connection of ducts, flexible connectors or a cover grille
The release mechanism is accessible and can be tested from the outside
Two inspection access panels
Intermediate dimensions in 50 mm increments for width
Remote control with spring return actuator

Materials and surfaces

Casing:

Galvanised sheet steel
Galvanised sheet steel, powder-coated RAL 7001
Stainless steel 1.4301

Damper blade:

Special insulation material
Special insulation material with coating

Other components:

Damper blade shaft in stainless steel
Plastic bearings
Seals of elastomer

The construction variants with stainless steel or powder-coated casing meet even more critical requirements for corrosion protection. Detailed listing on request.

Standards and guidelines

Construction Products Regulation
EN 15650:2010 Ventilation for buildings – Fire dampers
EN 1366-2:1999 Fire resistance tests for service installations – Fire dampers
EN 13501-3:2010 Fire classification of construction products and building elements
EN 1751:1999 Ventilation for buildings – Air terminal devices

Maintenance

The functional reliability of the fire damper must be tested at least every six months; this has to be arranged by the owner of the ventilation system; functional tests must be carried out in compliance with the basic maintenance principles stated in EN 13306 and DIN 31051. If two consecutive tests, one 6 months after the other, are successful, the next test can be conducted one year later.
A functional test involves closing the damper blade and opening it again; with a spring return actuator this can be done via remote control
Fire dampers must be included in the regular cleaning schedule of the ventilation system.
For details on maintenance and inspection refer to the installation and operating manual

Technical information

Schematic illustration of FKS-EU with fusible link

① Casing
② Inspection access
③ Fusible link
④ Damper blade with seal
⑤ Travel stop
⑥ Handle with interlock and damper blade position indicator
⑦ Release mechanism

Construction with fusible link

Functional description

In the event of a fire, fire dampers shut automatically to prevent the propagation of fire and smoke through ductwork to adjacent designated fire compartments. In the event of a fire, the damper is triggered at 72 °C or at 95 °C (use in warm air ventilation systems) by a fusible link. The release mechanism is accessible and can be tested from the outside.

Construction with spring return actuator

Functional description

The spring return actuator enables the motorised opening and closing of the damper blade; it can be activated by the central BMS.

In the event of a fire, the damper is triggered thermoelectrically at 72 °C or 95 °C (use in warm air ventilation systems). As long as power is supplied to the actuator, the damper blade remains open. If the supply voltage fails, the damper closes (power off to close). Motorised fire dampers can be used to shut off ducts. The torque of each actuator is sufficient to open and close the damper blade even while the fan is running.

The spring return actuator is fitted with limit switches that can be used for capturing the damper blade position.

Nominal sizes	200 × 100 to 800 × 200 mm
Casing length	300 mm
Volume flow rate range	Up to 1600 l/s or up to 5760 m³/h
Differential pressure range	Up to 1500 Pa
Operating temperature	At least 0 – 50 °C **
Release temperature	72 °C or 95 °C (for warm air ventilation systems)
Upstream velocity*	≤ 8 m/s with standard construction; ≤ 10 m/s with spring return actuator

* Data applies to uniform upstream and downstream conditions for the fire damper

** Temperatures may differ for units with attachments; details for other applications are available on request.

Volume flow rate V [m³/h] at differential pressure Δpst < 35 Pa

H [mm]	L_WA [dB(A)]	B [mm]
H [mm]	L_WA [dB(A)]	200	300	400	500	600	700	800
100	35	300	480	660	840	1030	1230	1420
100	45	420	670	920	1180	1450	1720	2000
125	35	410	650	890	1150	1400	1700	1940
125	45	570	900	1250	1600	1960	2350	2700
150	35	520	830	1140	1470	1800	2140	2480
150	45	730	1160	1600	2060	2520	3000	3480
160	35	570	900	1250	1600	1970	2340	2700
160	45	790	1260	1750	2240	2750	3280	3800
200	35	760	1220	1690	2170	2660	3170	3680
200	45	1060	1700	2360	3040	3750	4430	5150

Volume flow rate V [l/s] at differential pressure Δpst < 35 Pa

H [mm]	L_WA [dB(A)]	B [mm]
H [mm]	L_WA [dB(A)]	200	300	400	500	600	700	800
100	35	83	133	183	233	286	342	394
100	45	117	186	256	328	403	478	556
125	35	114	181	247	319	389	472	539
125	45	158	250	347	444	544	653	750
150	35	144	231	317	408	500	594	689
150	45	203	322	444	572	700	833	967
160	35	158	250	347	444	547	650	750
160	45	219	350	486	622	764	911	1056
200	35	211	339	469	603	739	881	1022
200	45	294	472	656	844	1042	1231	1431

Rectangular or square fire dampers with flanges, for the isolation of duct penetrations between fire compartments.

Tested for fire resistance properties to EN 1366-2, with CE marking and declaration of performance according to the Construction Products Regulation.

Ready-for-operation unit, which includes a fire-resistant damper blade and a release mechanism. For mortar-based installation and dry mortarless installation into solid walls and ceiling slabs, lightweight partition walls and fire walls with cladding on both sides; also in shaft walls with metal support structure and cladding on one side.

Casing length 300 mm, for the connection to ducts made of non-combustible or combustible materials. Thermal or thermoelectric release at 72 °C or 95 °C (warm air ventilation systems).

Constructions with spring return actuator for opening and closing the fire damper independent of the nominal size and even while the ventilation system is running, e.g. for a functional test.

Construction with installation block for easy dry mortarless installation.