Cassette Stove Installation Guide
Due to the gradual introduction of European Chimney Standards chimneys will
be specied according to their performance designation as dened 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 ue and chimney installation must be carefully checked by a competent
person before tting 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
ue and chimney are in good operating condition.
Check the existing ue is in good condition with suitable access for collection
and removal of debris.
It is also important that suitable ue pipe (recommended at least 600mm in
length) complying with the Building Regulations is used to connect the stove to the
ue in the chimney. Suitable access should be provided into the ue for regular
inspection and sweeping of the ue ways.
The installer should comply with Building Regulations requirements in respect
of providing a Notice Plate giving details on the chimney, ue lining, hearth and
replace 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 tting of a draught stabiliser in preference to a ue damper, in the interest
of safety and eciency.
BK605 Rev02 6
