Datasheet

When planning your ducting run
try to keep the number of bends to
a minimum as this will also help
maximise the hood performance.
We suggest that you always utilise
Britannia rigid circular ducting or
‘Mega duct’ to optimise performance.
Note: Ducting must not be connected
to any existing ventilation or flue
system that is being used for any
other purpose.
Recommended ducting lengths
taking into account how many
bends you require:
– One 90º bend allow 4 metres
of ducting
– Two 90º bends allow 3 metres
of ducting
– Three 90º bends allow 2 metres
of ducting
Ducted hood in the same room
as a fossil fuel burning appliance.
The following is a requirement of
UK and European legislation and
is in the interests of your safety.
If the room where a ducted cooker
hood is to be installed also contains
a fossil fuel burning appliance such
as a gas or oil central heating boiler,
then its flue must be of the room
sealed or balanced flue type. A
ducted hood is not suitable for use
in a room where any open flue is
in use, as dangerous fumes of
combustion can be sucked back
into the room. This would include
the following open flue appliances –
central heating boilers, coal fires,
log fires, gas fires, wood burning
stoves, etc.
Therefore if you have an open flue
fossil fuel burning appliance in
your kitchen, you must select a
hood that is capable of working
on recycling mode.
Cooker hood – chimney kits
With the aid of the line drawings
in the brochure and respecting
the minimum distance between
the cooker hotplate and underside
of the hood, double check that
everything will fit or ask your
installer to check your sizes on
your behalf. If you have any
problems please contact the
Britannia technical department
who will be pleased to advise on
all technical matters including
coping with lower than average
ceiling heights.
Canopy hood installations
These hoods are designed for fitting
into wall cupboards above a cooker,
or into the aperture of a canopy
housing which can be of metal or
cabinetry construction such as an
over mantle arrangement. Sometimes
a canopy hood is the ideal solution
for positioning above a cooker that is
sited in a disused chimney breast.
If you are having a canopy housing
constructed, it will be beneficial
to incorporate a catchment area
into the underside of the housing –
this would be a recess to hold
and contain fumes, vapour, etc.
before the canopy motor extracts
these away.
If the underside of the canopy
housing is totally flat, there is also
a risk of fumes spilling around the
front and/or sides of the canopy
housing.
If the canopy housing is constructed
in a combustible material it must
be a minimum of 650mm above
the hotplate.
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