Hamlet Stoves
11
INSTALLATION
Due to the gradual introduction of Europe 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 stoves 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 (ie: built of brick or stone
without a liner) or being opened up for reuse
additional checks and smoke testing as described
in Appendix E of the Approved Document J 2002
Edition should also be carried out to ensure the
flue and chimney are good operating condition.
Check the existing flue is in good condition with
suitable access for collection and removal of
debris. If the flue size is more than 225mm (9”)
diameter or 200mm (8”) X 200mm (8”) square, a
suitable lining of 150mm (6”) diameter should be
fitted, or if the flue length is over 5.5 metres one
size larger than the appliance outlet should be
fitted.
(Please ensure that the proper calculation in
accordance with BS EN 13384 - 1:2005 has been
done to validate this recommendation.)
This should be a double skin stainless steel flexible
liner that is independently certified for use with sol-
id fuel. Details of suitable linings for use with wood
& solid fuel are given in the Official HETAS guide
that can be viewed on their website at
www.hetas.co.uk.
It is also important that suitable flue pipe complying
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 Building Regula-
tions requirements in respect of providing a Notice
Plate giving details on the chimney, flue lining,
hearth and fireplace installation. Approved Docu-
ment J of the Building Regulations for England &
Wales is available from The Stationary Bookshops
and can also be viewed at the ODPM website at
www.safety.odpm.gov.uk/bregs/brads.htm.
Details on the relevant Building Regulations and
BS British Standards are given in the “ General
Precautions” section of these instructions.
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 stove appears to be working hard but produc-
es very little output to the room it is likely that ex-
cess draw is present in the chimney, and that heat is
being sucked out of the appliance and up the chim-
ney. If this is the case we recommend the fitting of a
draught stabiliser in preference to a flue damper, in
the interest of safety and efficiency.
FOR ALL APPLIANCES
Access for cleaning the flue should be
incorporated in the system other than through the
appliance (eg: a soot door or access through
register plate). Purpose made soot doors and
inspection lengths are available from manufacturers
of all systems. 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 300 mm
²
for each KW of rated output.
For advice on flues and chimneys contact:
NACE (National Association of Chimney
Engineers) Telephone : 01526 322555
www.nace.org.uk
OR
NACS (National Association of Chimney
Sweeps) Telephone : 01785 811732
www.chimneyworks.co.uk
OR
HETAS (Official Body To Approve Solidfuel
Domestic Heating Appliances)
Telephone : 0845 6345626
www.hetas.co.uk
