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Joints
Joint
Access (door)
Figure 33: Sealing the section con-
Figure 32: AHU separation acces-
nection (joint) with the sealing agent
sible via door
For roof AHUs, also the roof flange is to seal, refer to Figure 34.
Figure 34: Sealing the roof flange
5.1.5
Securing the position of AHUs
Floor AHUs must be fixed on the foundation to secure the position. A direct coupling, see Figure 35
left, should be avoided because of structure-borne sound transmission. If you use structure-borne
sound insulated underlayment, the fixing by lugs is particularly suitable to avoid the displacement of
the AHU in all directions (Figure 35 right).
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