Specification Text - Lindab RECTANGULAR Series Technical Manual

WKS25 WKS25

SPECIFICATIoN TExT

SPECIFICATIoN TExT
Series WKS25 compact rectangular fire damper
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Description
WKS25 rectangular fire damper tested for fire resistance
and smoke seal with 500 Pa depression as per EN 1366-2,
classified according to EN 13501-3 and CE marked accord-
ing to European Regulation UE 305/2011 and EN 15650
standard.
Allows maximum safety for fire protection inside buildings
providing perfect heat insulation and cold and hot smokes
tightness. Can be connected to fire protection alarm sys-
tem or smokes detection to anticipate blade closure be-
fore fire, prevents indirect damages caused by smokes
generated by combustion.
Technical characteristics
• Available sizes from 100x200 mm to 800x600 mm
• bigger sizes achievable by pairing two fire dampers
• Case made from galvanized sheet steel, with a total
length of 310 mm, with "thermal labyrinth" insulation
system. Comes with flanges for duct connection 20 mm
width with reinforced angle connections.
• Closing mechanism built according to UNI 10365, with
thermal fuse certified to ISo 10294-4, a test button to
check the correct working of the damper, a release sys-
tem to block the damper in closed position and a visual
signal "open/closed". The closing mechanism can be eas-
ily interchanged and substituted:
– with mechanical release and manual rearming
– with mechanical release and manual rearming, can be
released remotely via a magnet and electric and signal
– with electric release and rearming, via and integrat-
ed Siemens or belimo system tested according to EN
15650, composed by an electric thermal fuse and re-
mote controlled servomotor via an electrical signal
• blade made from calcium silicate insulating material
• blade axis made of steel, fixed on casing, with low friction
bearings for high reliability in case of fire.
• EPDM lip gasket to cold smoke sealing according to EN
1366-2
• Thermal, expanding graphite gasket
• Thermal fuse with melting point certified ISo 10294-4 at
70 °C or 95 °C (version with mechanical release) or at 72
°C (version with servo motor)
• Absence of thermal bridge between the wall of installa-
tion and the ducts before and after
• Resistance to salt spray, tested with severity 2, according
to EN 60068-2-52
• Casing leakage Class C according to EN 1751
Installation
• Installation within vertical rigid walls made from aerated
concrete blocks, standard concrete or masonry with a
minimum thickness of 100 mm and minimum density of
550 kg/m³ (EI 120 S)
• Installation within light plasterboard walls with mini-
mum thickness of 100 mm (EI 60 S)
• Installation within plasterboard walls with minimum
thickness of 100 mm (EI 120 S)
50/54 50/54
• Installation within light walls made with gypsum blocks
100 mm thick and minimum density 995 kg/m³ (EI 120 S)
or minimum thickness of 70 mm and minimum density
995 kg/m³ (EI 90 S)
• EI 90 S Installation within vertical light wall (Shaft wall)
• Fire resistance characteristics independent from direc-
tion of the source of the fire according to EN 1366-2 ar-
ticle 6.2
• Installation possible with damper blade placed horizon-
tally or vertically, with the mechanism placed in left/right
or above/below
• Quick installation, no need to use concrete or filling ma-
terials, operating just on one side of the fire damper. For
vertical walls installation it is possible to approach the fire
damper to the side vertical wall, to the ceiling or to the
floor, or install the fire damper in the corner.
Accessories
• Motorised version with 24 v or 230 v servomotor in-
stalled on the damper
• Set of microswitches with three No/NC position de-
tecting connectors for open and closed damper, as per
standard UNI 10365
• Immission and Interuption magnet 24/48 v DC
• Power supply and communication unit MP-bus, Modbus,
bacnet
• Inspection doors diameter 140 mm with air sealing gas-
ket, no tools required for opening
• Plasterboard shaped sealing panels for wall installation
precut on required sizes
• Fire damper pairing kit WKSbA25