Silverline 3170 EC - Ducting; Back Draft Fins

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7. Installation
Ducting
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the system. Ducting needs to be kept taut at all times.
Back Draft Fins
Back Draft Fins
Should your Back Draft Fins get stuck, this is not a warranty issue.
When installing Back Draft Fins, please ensure that you insert the Back Draft Fins onto the back draft
base, which are attached to the top of the motor outlet before installation.
NOTE: Please make sure when ducting is installed, that it does not impede the Back Draft Fins
from operation.
Back Draft Base