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Blades overlaps
Act. mechanism side
Side without act. mechanism
Act. mechanism side
Side without act. mechanism
Act. mechanism side
Side without act. mechanism
c
a
h
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., 4.4.1. and 4.4.2.) the weight of BKN (0.5 kg).
rectangular dampers can be supplied on the customer´s demands in all subdimension of the above
mentioned range.
Flanges of rectangular fire dampers are 30 mm wide with oval hole (Fig. 34, 35).
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. 33d).
g
28
"a"
Tab. 4.3.1
"c"
Tab. 4.3.1
"e"
Tab. 4.4.1
"f"
Tab. 4.4.1
"g"
Tab. 4.4.2
"h"
Tab. 4.4.2
f
50
375
e
50
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