14
Ducting Best Practice
The use of fl exible ducting must be kept to a minimum and it should always be
pulled taut.
If applicable, Fire Dampers must be fi tted to duct work at appropriate locations in
accordance with Building Regulations.
Ducting must be installed in such a way that resistance to airfl ow is minimised.
We recommend a minimum distance of 200mm between the appliance and any
sharp bends in duct work.
Ducting terminal for Exhaust must be to the external air outside the building
envelope.
Ducting in unheated spaces must
always be insulated to prevent
condensation forming within the
ducting.
Additional guidance can be found in
the Residential Ventilation Associa-
tion Installation Good Practice Guide
and Approved Document Part F.
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Installation
EXTRACT
PORT
Extract Port to Outside
Online Version
