2
FIRE DAMPER - FD
1.
Flange
2.
Gypsum layers
(Factory Fit)
3.
Intumescent joint
4.
Contact layer
(Factory Fit)
5.
Cold smoke seal
1. Galvanized steel casing
2. Fire resistant damper blade
3.
Intumescent joint
4. Connection flanges
5. Thermal fuse
6. Actuator
2
3
4
5
1
2
3
4
6
5
1
ATEX rated versions of fire dampers can be delivered with
Schischek 24 V / 230 V electric actuators that are rated for
installation in explosive atmosphere areas.
All fire dampers are tested according to the EN 1751 for
airtightness and retain class 2 leakage on the closed damper
blade and class C on the casing air leakage.
PRODUCT OVERVIEW
Fire dampers FD are used for prevention of fire spread trough the
ventilation ducts and between fire sections. Fire dampers consist
of steel sheet case, calcium silicate damper blade, damper blade
mechanism outside of the airflow and a manual or electric
actuator.
Fire damper case is made out of galvanized steel sheet. Variants
produced from stainless steel and powder coated steel are also
available. Calcium silicate blade is equipped with brass bearings
and seals made out of polyurethane and elastomer rubber.
Fire dampers FD25 are produced up to size 800x600 and have
25 mm thick damper blade. Fire dampers FD40 are produced in
sizes 800x600 up until 1500x800 and have 40 mm thick damper
blade.
FD25 fire dampers are equipped with R25 manual mechanism and
FD40 fire dampers are equipped with R40 manual mechanism.
Manual spring return mechanism is equipped with thermal fuse
that is triggered automatically when the temperature inside the
duct reaches 72 °C. It can also be activated manually by the
push of the button on the mechanism.
Addition
a
l equipment for manual mechanism include
end
con-tact switches for damper position signaling.
Fire dampers with electric actuators are equipped with
Belimo actuator drives in 24 V or 230 V versions.
Activation of fire dampers equipped with electric drives
can be via 72 °C or 95 °C thermal fuse or remotely via
control signal. Rearming of the electric fire damper can also
be done remotely via control signal. All electric actuators are
equipped with end switches for position signaling.
