OVERVIEW
WH25
LINDAB SAFE
4/50
OVERVIEW
Description
Fire dampers WH25 are devices for use in heating, ventila-
tion and air-conditioning (HVAC) systems at re bounda-
ries to maintain compartmentation and protect means of
escape in case of re. They satisfy integrity, insulation and
smoke leakage criteria for the declared time of re resist-
ance.
Tested and classed in accordance with EN 1366-2 and EN
13501-3 regulations with 500 Pa depression.
Studied and optimized for small diameter ducts and re-
duced installation space focusing on aeraulic and acous-
tical performance.
Equipped with various dierent mechanisms completely
outside the wall, easily interchangeble even after installa-
tion.
General characteristics
• Casing made from galvanized carbon steel.
• Thermal labyrinth obtained from the casing.
• Air duct connection gasket.
Lindab Safe: The system is based on a double, factory-in-
stalled seal made of EPDM rubber. This seal makes the
system quick and easy to mount. Refer to Lindab web
site for further information.
Please note that casing painting (see table Accessories
and spare parts p. 41) is not available for Lindab Safe
connectors.
• Intumescent sealing gasket.
• Opening/closing mechanism with IP42 protection box
(IP54 for motorized version).
• 25 mm thick closing blade made with refractory material.
• Lip seal on blade border for cold smoke seal.
• Internal intumescent gasket for hot smoke seal.
European Standards applied
CE certication EN 15650
Test EN 1366-2
Classication EN 13501-3
Thermal fuse reliability ISO 10294-4
Air tightness EN 1751
Resistance to corrosive environments EN 60068-2-52
Certications and approvals
CE Certicate of Constancy of Performance n° 1812-CPR-1023 Efectis
German approval n° Z-56.4212-987 DIBt
NF certication n° 09/04.02 AFNOR
Swiss approval n° 25971 VKF-AEAI
Swedish approval n° SC0195-16 SP
Components
1. Casing made from galvanized carbon steel.
2. Thermal labyrinth
3. Intumescent graphite gasket on the outside the casing
4. Damper blade made from refractoring material
5. Blade pivot
6. Cold smoke air seal gasket
7. Intumescent graphite gasket on inside of casing for the hot seal
of the blade once closed
8. Temperature controlled closing device (thermal fuse)
9. Blade actioning device
10. Manual closing device (Test button)
11. Manual reset lever
12. Closed blade stopper
13. Protection box
14. Inspection opening Ø 18mm for endoscope (available only for
non-motorized version)
WH25
LINDAB SAFE
4/50
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