Euroclima ZHK, Manual

Page: 82 / 142

Instruction Manual ZHK
V07-21.0 81/140
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A suitable seal (not included in the scope of supply) has to be installed between the device
housing and the component of the duct system.
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The aero-technical connections must be executed free of tension and torsion. For example no
forces / loads are allowed to be transmitted to the device housing by means of attached acces-
sories such as ducts etc. The components on the system side must be fastened and supported
separately.
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Even if no flexible connection is included in the scope of delivery of the device, an elastic con-
nection must always be installed to prevent structure-borne sound transmission between the
device and the duct system. It is recommended to use an interposed elastic connection of at
least 140 mm in width, which needs to be installed unstrained between the duct and the AHU.
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This elastic connection must have sufficient flexibility and must be installed in a professional
manner in order to avoid transmission of vibrations to the duct system.
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For proper performance of the AHUs, following of the basic rules of the duct construction is
necessary. By appropriate planning, dimensioning and execution of the duct system, increased
pressure losses and flow noise in the duct can be avoided.
Mounting components of the duct system directly on the external panel of the AHU
The procedure is as follows:
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The dimensions (internal dimensions) of the device opening can be taken from the device
drawing or measured directly at the AHU.
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The components of the duct system, which are to be fastened to the respective device open-
ing, must have the same internal dimensions as the device opening!
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A flange contact surface for supporting the components of the duct system is provided around
the clear opening - the recommended flange width is 30 mm.
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The components of the duct system can be fastened on this flange surface with self-tapping
screws (not supplied).
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Attention: Holes for fastening elements must be installed at a distance of max. 15 mm from the
clear device opening. If the distance is greater, then it is not possible to effectively and securely
fasten it (see
Figure 181
)!
Figure 180:
Airside duct connection directly on the
external panel of the AHU