
PRE-
INSTALLATION
INSTALLATION INSTRUCTIONS
16
TERMINAL OUTLET POSITIONS
8 718 682 335b (09.2008)
• The flue must be fitted and terminated in accordance
with the recommendations of BS5440 : Part 1.
• The flue must not cause an obstruction.
• Discharge and any noise from the flue outlet must not
cause a nuisance.
• Flue gases have a tendency to plume and in certain
weather conditions a white plume of condensation
will be discharged from the flue outlet. Where this
could be a nuisance, for example, near security lighting,
an alternate position should be found.
• The air inlet/outlet duct and the terminal of the boiler
must not be closer than 25mm to any combustible
material.
Detailed recommendations on
protection of combustible materials are
given in BS 5440: Part 1
• A protective terminal guard must be fitted if the terminal
is 2m or less above a surface to which people have
access.
The guard must be spaced equally (minimum 50 mm)
around the flue and fixed to the wall with plated
screws. See Contact Information (inside front cover).
NOTE: All measurements are the minimum
clearances equired.
Terminals must be positioned so to
avoid combustion products entering
the building.
600mm distance to a
boundary, unless it will
cause a nuisance. BS
5440-1 recommends
that care is taken when
siting terminals in
relation to boundaries.
drainpipe
Internal/external
corners can be reduced
to 150mm providing the
flue gas outlet has
300mm clearance.
balcony
window
100mm
boundary
25mm
25mm
300mm
150mm
200mm
200mm
150mm
200mm
150mm
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