FIRE DAMPERS
364
365
Design changes reserved
*Flexible conectors are shipped unassembled.
Cover grille
If fire damper is to be ducted only from one side, other end must have a cover grille. Cover grills have cross sectional free area ap-
proximately 70%. When cover grilles are being installed very important is to install extension peace if necessary (see table 2).
**Extension peace is not supplied
*Cover grilles are shipped unassembled.
**Extension peace is not supplied
Flexible connectors
Ventilation ducts must be installed in such manner that don’t oppose loads on fire damper or wall in case of fire. This is important
when dumper is installed and sealed with mineral wool. Using flexible connectors when connecting fire dampers to ducts can elimi-
nate that problem. Flexible connectors are available on demand in dimensions same as fire dampers.
When flexible connectors are being installed very important is to install extension peace if necessary (see table 2).
ACCESSORIES
Suspension for mortarless installation
Suspension systems are required for the dry mortarless installation of the fire damper with mineral wool in solid walls, flexible walls
and ceiling slabs. 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.
Threaded rod (M10) , galvanized steel
Washer, galvanized steel
Nut, , galvanized steel
Bracket, 45x30x1,5 mm, , galvanized steel
L shaped profile (50x50x1) secured with self tapping screw to damper housing
1
2
3
4
1
3
2
4
5
425
x
y
425
x
x
5
Øn, mm (fire
damper diameter)
X/Y, mm (exten-
sion piece length)
400
-/65
450
-/90
500
-/115
560
30/145
630
65/180
Table 2
For ceiling instal-
lation, brackets on
the bottom are used
to support wool
from falling down.
Wall installation
Ceiling installation
