25
TPM 075/09
4.7.
For the design .60 (with BKN supply and communication device) add to weight of the damper with
an actuating mechanism (from the Tab. 4.3.1. and 4.4.1.) the weight of BKN (0.5 kg).
4.8.
Square dampers can be supplied on the customer´s demands in all subdimension of the above
mentioned range.
4.9.
Flanges of square fire dampers are 30 mm wide with oval hole (Fig. 34).
Dimensions of damper connecting flanges are in accordance with EN 12 220.
In case of damper installation into SPIRO duct, round dampers are supplied without the flanges
so as it is possible to connect them with external joints (it is necessary to specify this requirement
in the order). Damper length for SPIRO duct is 475 mm (Fig. 35).
4.6.
Blades overlaps
a) For square fire damper (Fig. 33a) the open damper blade overlaps the damper body from
dimension B 750 mm by the value "c" or “a” and “c”
These values are specified in the Tab. 4.4.1.
b) For round fire damper (Fig. 33b) the open damper blade overlaps the damper body from
dimension 225 mm by the value "c" or “a” and “c”
These values are specified in the Tab. 4.5.1.
c) For round fire damper (Fig. 33c) for SPIRO ducts the open damper blade overlaps the
damper body from dimension 355 mm by the value "f" or “e” and “f”
These values are specified in the Tab. 4.5.1
Values "a" and "c" or "e" and "f" has to be respected when projecting related air-conditioning ducts.
Fig. 33a Overlaps of square dampers
Fig. 33b Overlaps of round dampers
Fig. 33c Overlaps of SPIRO dampers
Summary of Contents for FDMB
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