5.9
Suspended installation of the fire
damper
5.9.1
General
Fire dampers can be suspended from solid ceiling slabs
using adequately sized threaded rods. Load the suspen-
sion system only with the weight of the fire damper.
Ducts must be suspended separately.
Suspension systems longer than 1.5 m require fire-
resistant insulation.
For suspended installation, the fire damper requires an
extension piece; alternatively, the fire damper can be
connected to the ductwork before it is suspended.
Size of threaded rods
Thread M8 M10 M12 M14 M16 M20
Fmax (N) per
threaded rod
219 348 505 690 942 1470
Maximum
loading [kg] per
threaded rod
22 35 52 70 96 150
5.9.2
Fixing to the ceiling slab
Fig. 31: Fixing to the ceiling slab
①
Anchor with certified fire protection qualification
②
Push through installation
Only steel anchors with certified fire protection qualifica-
tion and suitable for the wall or ceiling must be used.
Instead of anchors, threaded rods can be used and can
be secured using nuts and washers.
5.9.3
Fire dampers with fire batt
5.9.3.1
Horizontal duct
Installation of the fire damper with a fire batt in hori-
zontal ducts requires a suspension system on both
sides of the wall.
Fig. 32: Suspension system, horizontal duct
①
Fire damper
②
Flexible connector
③
Extension piece
④
Clamp
⑤
Threaded rod, at least M8, galvanised steel. Fixing
to the ceiling slab
Ä
Chapter 5.9.2 ‘Fixing to the
ceiling slab’ on page 46 Suspension systems longer
than 1.5 m require fire-resistant insulation.
Ⓐ
Installation side
Ⓑ
Operating side
Note: Each fire damper must be suspended separately.
Installation
Suspended installation of the fire damper > Fire dampers with fire batt
Fire damper Type FKRS-EU46
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