HSB Boiler Stove
INSTALLATION
Due to the gradual introduction of European
Chimney Standards chimneys will be specified
according to their performance designation as
defined in BS EN 1443 that covers the General
Requirements for chimneys. The minimum
performance designation required for use with solid
fuel burning stove is
T450 N2 S D3
The flue and chimney installation must be carefully
checked by a competent person before fitting the
stove to ensure it is suitable and will work safely.
If the chimney is old (i.e. built of brick or stone with
out a liner) or being opened up for reuse additional
checks and smoke testing as described in Appendix
E of Approved Document J 2010 Edition should be
carried out to ensure the flue and chimney are in
good operating condition.
Unless the existing flue is in good condition with
suitable access for collection and removal of debris,
the flue size is more than 225mm (9”) diameter, or
200 x 200mm square, a suitable lining of 150mm
(6”) diameter should be fitted. If the flue length is
over 5.5metres one size larger than the appliance
outlet should be fitted (6” min.). This should be a
double skin stainless steel flexible flue liner that is
independently certified for use with solid fuel. Details
of suitable linings for use with wood and solid fuel
are given in the official
HETAS
guide that can be
viewed on their website at
www.hetas.co.uk -
(
H
eating
E
quipment
T
esting &
A
pproval
S
cheme.)
It is also important that a suitable flue pipe that
complies with the Building Regulations is used to
connect the stove to the flue in the chimney and that
suitable access is provided into the flue for regular
inspection and sweeping of the flue ways.
The installer should comply with the Building Regu-
lation requirements in respect of providing a notice
plate giving details on the chimney, Document J of
the building regulations for England and Wales is
available from The Stationary Bookshops and can
also be viewed at the following website:
www.planningportal.gov.uk/uploads/br/
BR_PDF_ADJ_2010.pdf
Details on the relevant Building Regulations and BS
British Standards are given in the ‘General
Precautions’ section of this manual.
Chimneys should be as straight as possible.
Horizontal runs should be avoided except where
the rear outlet of the appliance is used, in which
case the horizontal section should not exceed
150mm (6”) in length.
If the fire appears to be working hard but
produces very little output to the room it is likely
that excessive draw is present in the chimney,
and that heat is being sucked out of the appliance
and up the chimney.
If this is the case we recommend the fitting of a
draught stabiliser in preference to a flue damper,
in the interests of safety and efficiency.
FOR ALL APPLIANCES
Access for cleaning the flue should be
incorporated in the system other than through
the appliance (e.g. a soot door or access though
the register plate). Purpose made soot doors and
inspection lengths are available from manufactur-
ers of all flue system.
Ensure that the whole length of the flue can be
reached from the soot door.
Note: If the appliance is fitted with a draught
stabiliser or if one is fitted to the flue pipe or
chimney in the same room as the appliance,
then the permanent air entry opening (or
openings) should be increased by 300mm² for
each kW of rated output.
For advice on flues and chimneys contact :-
NACE (National Association of Chimney
Engineers): Telephone 01526 322555
Web address: www.nace.org.uk
Or
NACS (National Association of Chimney
Sweeps): Telephone 01785 811732
Web address: www.chimneyworks.co.uk
Or
HETAS (Official Body to Solid Fuel Domestic
Heating Appliances): Telephone 0845 634
5626
Web address: www.hetas.co.uk
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