37
Duct between fire damper and fire separating construction can be
suspended by using
threaded rods and suspension rings. 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 rod fixing to the ceiling construction - see fig. 36
The insulation boards are fastened to the duct by weld pins. Distance between weld pins,
distance between weld pins and flanges is dependent on the materials. For more information
see documentation of insulation manufacturer.
Position:
1
Fire damper
2
Duct
3
Insulation
4
Threaded rod
5
Suspension ring
6
Weld pin
