INSTRUCTIONS FOR THE INSTALLER
THE HEATER ENVIRONMENT
The heat output through the glass is significant and all material that could be affected by, or
altered by, heat (wood, paper, material) must be at least 150cm from the door glass.
The glass can get very hot and care must be taken to avoid burns – especially with children.
Always respect the regulations in force in the country of installation.
Ensure that the chimney to be used is sound. The condition of the chimney is of utmost
importance. It will ensure the proper functioning of the heater in ensuring the proper intake
of primary air and the evacuation of combustion gases. The chimney and/or flue liner must
be compatible with the insert to ensure correct installation and operation.
Most heater/ insert malfunctions are due to a fault with the chimney flue – this point cannot be
emphasized enough….
One should not be content in referring to results obtained with a previous heater – the air intake
requirements may differ.
A good chimney should be made of material that is a low conductor of heat and that does
not cool down too easily.
If the internal volume of a brick chimney, or existing tubing, is too high it may be necessary
to run a new liner in the chimney – this is especially important when installing an insert. Any
bends must be gentle and as straight as possible.
Mechanical sweeping of the chimney must be possible – there should be no restrictions or
sharp bends.
If there is any combustible material in the rear wall of the chimney (some types of
insulation) this should be removed across the full width of the chimney and up to the height
of the ceiling. Any beams (exposed or enclosed) in the vicinity should not be exposed to any
temperatures exceeding 50⁰C.
In cases where combustible material has to be removed then the wall should be rebuilt using
materials with good thermal insulation properties – cellulose concrete for example.
The internal cavity of the chimney where the insert is to be installed should be lined with
special insulation material along it’s full height and width (ceramic board, rockwool, etc.).
THE INSERT ITSELF MUST NOT BE WRAPPED IN INSULATION MATERIAL.
If a wall has to be rebuilt then allow for suitable ventilation vents for correct and optimal
operation of the insert. Any new walling must be of adequate stability and thickness to
ensure sufficient thermal insulation. For example: cellulose concrete should be 10cm thick.
IMPORTANT: In all cases where a lined insulation material (aluminium foil on one side) is
used to line the cavity then the lined side (aluminium) must be on the inside of the cavity
and the unlined side must be attached to the cavity wall.
If there is a combustible mantle piece (wooden beam) it must be protected on the inside and
underside by incombustible material or by a deflector. There must be no direct physical
contact between the material protecting the mantelpiece and the insert itself.
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