6
INSTALLATION INSTRUCTIONS
in 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. 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.
This should be a double skin stainless steel flexi-
ble liner that is independently certified for use
with solid fuel.
Details of suitable linings for use with wood fuel
are given in the 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 other than through
the appliance (e.g. wherever possible a soot
door or access through register plate).
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
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.
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.
FINAL CHECK LIST
Before handing over the installation to the
customer it is a requirement under Document J (of
the Building Regulations for England & Wales) that
the appliance is lit and the functioning of the
chimney system is checked for satisfactory
operation.
Be sure that the chimney is operating and all
smoke and fumes are vented to the
atmosphere through the chimney
terminal.
Check all joints and seals.
Clean the outside of the appliance to
prevent any stains becoming burnt on.
Check the flue draught which should read 1
- 2mm, or 0.1 - 0.2 mbar.
For a registered competent persons
scheme, such as HETAS, please
complete a Certificate Of Compliance,
which is used for checking and reporting the
installation as imposed by the Government.
Explain the controls and operation of the
appliance to the customer.
Ensure a Carbon Monoxide alarm is
fitted. This must be between 1m to 3m of the
appliance, and approximately 150mm
below the ceiling level.
A fireguard conforming to BS 8423:2002
should be used in the presence of
children and old or infirm people.
DEFRA Stove Installation and User Guide
