18 | Rectangular re damper user manual 03/2020 19 | Rectangular re damper user manual 03/2020
AB
Prepare wall opening B (H) + 100 mm. Place re damper and duct on pre-cut calcium silicate 52mm
(Promat L500). 100mm wide supports from same material need to be used to support the duct as well
as the damper.
Fit the duct and the damper through
the wall, and cover them with 52 mm
calcium silicate (Promat L500). Board
corner joints must be glued with glue
PROMAT K84 and connected with
staples every 100mm
The gap between the damper and the
wall must be lled with mineral wool
(density 140 kg/m³ or more)
Close the mineral wool with
Promatect H plates 20mm thick.
Duct and damper supporting
brackets have to be insulated with
52 and 20mm calcium silicate boards
(Promatect H and L500) More detail drawing of installation
will be send upon request!
The wall is composed of 2x2 GKF plates, 12.5 mm thick, installed on a 48 mm wide steel construction.
The interior of the wall is lled with mineral wool of 100 kg / m³ density.
Recommended wall opening is
B,H+70 mm
Place ventilation duct trough wall.
Distance between suspensions se max.
800 mm (thickness of threaded rod for
suspension should be M12 or more)
Install re damper and secure it to
ventilation duct
Fill space between duct and wall
with mineral wool (Isover U protect).
Additionally paint wool with Isover
BSF in thickness of 1mm.
Close installation with L proles
30x30x3mm. Additionally x proles to
duct with self-tapping screws, and screw
them to wall with 4,5x50 screws. Repeat
the same procedure on the other side.
Install wool (Isover U protect). Wool
should be glued to the wall with
Isover BSK glue. Glue is applied in
thickness 2mm. For details please see
Isover U-protect brochure page 28.
Secure the wool with welding nails.
Nails are placed 60mm from the end
of the plate and 150mm between
each other.
Place the wool on ventilation
duct in lenght of 80m and scure it
withwelding nails.
In the corner are aditionaly used
IsoveFireProtectScrew screws on
every 150mm. Additionally place steel
protection on place where insulation
on damper ends.
