6.4
Cover grille
Fig. 37: Fire damper with cover grille
①
Extension piece required from nominal size 224
②
Cover grille
If only one end is to be ducted on site, the other end
must have a cover grille.
Note
To ensure that the open fire damper blade is con-
tained within the fire damper casing on the installa-
tion side, an extension piece is required for nominal
size 224 and above.
6.5
Inspection access
Type FKRS-EU fire dampers have an inspection access
that is closed with a rubber stopper
Ä
Chapter 4 ‘Parts
and function’ on page 12. The interior of the fire damper
must remain accessible for maintenance work and
cleaning. Depending on the installation configuration it
may be necessary to provide inspection panels in the
connecting ducts.
Connecting the ductwork
Inspection access
Fire damper Type FKRS-EU50
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