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Mounting on a support system
38 | EN
6
Mounting on a support system
When mounting on a support system, the ducts are located on the sup-
port profiles and lock plates of the appropriate fittings, to which they are
screwed. The lid side of the ducts is at the top, meaning that the duct
route can be filled from the top. In turn, the lock plates of the fittings are
fastened to the ceiling using M10 threaded rods. Anchors with construc-
tion approval, which are suitable for the dead weight of the duct route
including cables, must be used to fasten the threaded rods to the ceiling.
Calculate the length of the threaded rods so that the support profiles and/
or lock plates are supported by a washer and two nuts (support nut and
lock nut).
Fig 41: Securing support profiles using nuts and lock nuts
6 1
Mounting a fire protection duct
Fire protection ducts can be mounted on different support systems. We
recommend screwing them to support profiles and sealing them with duct
connectors (see "6.1.1 Mounting on a support profile" on page 40).
Alternatively, fire protection ducts can be mounted on
– Profile rails on threaded rods (see page 42)
– Support/bracket combinations (see page 43)
– Wall brackets (see page 44)
With all the alternatives, the duct route must be supported by horizontally
mounted support elements and sealed at the joints with a combination of
support profile and duct connector.
The maximum support spacing is always 1 m. This means that duct
elments with a length of more than 1 m require additional support.
OBO Bettermann
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