PVC ducting is normally supplied due
to ease of use and strength but an
alternitive solution would be to install
thermal EPP (foam)
spiral metal ducting is required on
pipework above 150mm diamater
PVC and thermal pipe is easy to cut
with a fine-toothed handsaw.
Connect flexible pipe connectors to
the spigots of the unit and secure with
provided jubilee clips or cable ties.
Ensure that the flexible connectors
are not crushed or heavily deformed.
Alternatively, a small length of flexible
ducting could also be used.
Dry fit the pipework so lengths can be
cut to size.
1.5
Installation of Rigid ductwork to MVHR unit
Install glue to male fitting with
duct sealant or PVC glue.
Tape with silver foil tape
(do not use duct tape).
Insulate external pipes and
pipes above insulation in cold
areas with foil faced insulation.
Install semi flexible silencers
between the unit and
distribution boxes, these can
be also be used to align the
pipework but ensure that
they are safe from possible
damage.
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