Hamlet Solution Stoves 11
INSTALLATION
If a new chimney is being provided it should fully
comply with the relevant Building Regulations that
specify the requirements for solid fuel burning
installations. Suitable types of chimney include the
following :
Refer to BS EN 15287-1:2007 for the design
installation and commissioning of chimneys
Masonry Chimney :
Built with clay or concrete liners, or a chimney
block system meeting Building Regulations. These
types of chimney should be installed in accordance
with the Building
Regulations and BS 6461:Part 1.
Factory Made Insulated Chimney :
Complying with BS 4543:Part 2 ( Often called
“Class 1
prefabricated metal chimney” ). These types of
chimney should be installed in accordance with
Building Regulations and BS 7566: Parts 1 to 4.
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”) dia.
or 200mm (8”) X 200mm (8”) sq. a suitable lining of
150mm (6”) * See Special Note 1, diameter should
be fitted, or if the flue length is over 5.5 metres one
size larger than the appliance outlet should be
fitted. This should be a double skin stainless steel
flexible liner that is independently certified for use
with solid 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 Precau-
tions” 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 pro-
duces very little output to the room it is likely that
excess 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 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.
Special Note 1:
DEFRA Exempt Stoves for wood burning in a
Smoke Control area.
Approved Document J 2010 allows for the use of a
5” Liner / Flue for wood burning when a stove that is
DEFRA Exempt is installed.
This is as a result of the very clean burning nature of
DEFRA exempt stoves, when operated in strict
accordance to the user manual.
If the DEFRA exempt stove is replaced at any time
with a NON DEFRA exempt stove, the Liner / Flue
must be changed to a 6” diameter liner to conform to
Building Regulations when burning wood.
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 mm²for
each KW of rated output.