DEFRA Stove Installation and User Guide
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 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 (i.e: 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 2010 Edition should also be carried out to ensure the
flue and chimney are in good operating condition.
Check the existing flue is in good condition with suitable access for collection
and removal of debris.
It is also important that suitable flue pipe (recommended at least 600mm in
length) complying with the Building Regulations is used to connect the stove to the
flue in the chimney. Suitable access should be provided into the flue for regular
inspection and sweeping of the flue ways.
The installer should comply with Building Regulations requirements in respect
of providing a Notice Plate giving details on the chimney, flue lining, hearth and
fireplace installation.
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 in length. If necessary a combination of
45
◦
and
90
◦
bends can be used as long as the sum of their angles is not greater then
180
◦
in total. i.e four
45
◦
bends, or two
45
◦
and a
90
◦
bend.
If the stove appears to be working hard but produces 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.
4
Commissioning the stove
Before handing over the installation to the customer it is a requirement under
Document J (of the Building Regulations for England and Wales) that the appliance
BK575 Rev03
9