RDT-07-0122
47
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NORD
fire
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FDMQ
Images are for illustrative purposes
We reserve the right to make changes
8.3 Rectangular fire damper suspension on the wall- horizontal installation
Duct between fire damper and fire separating construction can be suspended by using threaded
rods and mounting profiles. Load the suspension system depend on weight of the fire damper
and duct system.
Max. length between two suspension systems is 1500 mm.
Damper assembly procedures must be done so as all load transfer from the fire separating
constructions to the damper body is absolutely excluded. Back-to-back air-conditioning piping
must be hung or supported so as all load transfer from the back-to-back piping to the damper is
absolutely excluded.
Threaded rods longer than 1,5 m require fire-resistant insulation.
If the threaded rod is located inside the duct insulation, distance between threaded rod and duct
is max 30 mm. If the treaded rod is located outside the duct isolation,
distance between threaded
rod and isolation is max. 40 mm. Thickness of the insulation under mounting profile must
be min. 30 mm.
Threaded rod fixing to the ceiling construction - see fig. 46
The insulation boards are fastened to the duct by weld pins. Distance between weld pins,
distancebetween weld pins and flanges is dependent on the materials.
For more information see documentation of insulation manufacturer.
Fig. 49 Rectangular fire damper suspension on the wall- horizontal installation
Insulation layers on the duct
Shown schemes of incorporation and damper are illustrative only!
Position:
1 Fire damper
2 Duct
3 Insulation
4 Threaded rod
5 Mounting rail
6 Nut
7 Washer
8 Weld pin
