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2.5
2.5.1
2.5.2
2.5.3
2.5.4
Ducting Guidelines
A 100mm nominal diameter spigot is provided for connection to ducting.
Ductwork should be securely connected to fan spigot. Failure to do this will
cause unnecessary air leakage and may impair performance.
All duct connections require sealing. Where ducts are installed against a solid
structure this can be difficult to achieve. In such locations preassembly of duct
ensure the seal is maintained during installation.
If applicable, Fire dampers
MUST BE FITTED
in accordance with Part B of the
Building Regulations.
Rigid Ducting
- Install using the least number of fittings to minimise resistance to
airflow. Where access to ducts will not be possible after construction is complete,
i.e. within floor and wall voids, consideration should be given to permanent
connection and sealing with an appropriate non-hardening sealant, and not using
duct tape to achieve connection and sealing.
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Diagram depicting typical installation
ducted through roof to external wall.
Do not terminate via a tile vent.
8
To secure decorative insert, clip in on
one side and then flex cover slightly to
engage opposing clips.
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Diagram depicting typical installation
ducted through roof soffit. Do not
terminate via a tile vent.
Position grille assembly onto back plate
and fully secure with 4 fixing screws,
ensuring they are driven home.
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