Handbook F C22022 04 21

30/34 | F-C2
Damper Minimum Distances
(mm)
≥200
≥200≥75
≥75
Legend
Installation 3 - Soft:
F5 Mineral wool filling (min. 100 kg/m3)
F6 Layer of fire resistive coating (Promastop-CC/Promat) at least 2 mm thick for exposed surfaces.
1 Fire damper (F-C2)
2 Connected metal ductwork
A2 Flexible duct coupling FCR-C2 / return plastic or metal valve (e.g. BALANCE-E)
3 Concrete/masonry/cellular concrete wall or ceiling
4 Flexible (plasterboard) wall
4a 2 layers of plasterboard fireproof plate type F, EN 520
4b Vertical CW – profiles
4c Horizontal UW – profiles
4d Mineral wool; thickness/cubic density see picture.