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P a g e
Ensure that the floor can support the weight of the unit. If necessary a weight-bearing slab (cement, stone or
tile) may have to support the unit.
Pipes that are used must be of the correct diameter and should preferably be enamelled as these are more
resistant to corrosion. Any horizontal section must be as short as possible so that the hot fumes/ smoke can
rapidly establish the correct operating draw for the unit.
The rear wall should not contain any flammable material
. Suitable protection should be applied if necessary.
Flammable material should be at a distance of at least 50cm from the rear of the unit.
If there are walls to the left or right sides of the unit, containing flammable material, these should be at least
40cm from the side of the unit.
If the unit is to be used in a freestanding situation, within an alcove, then the gap above the unit to the ceiling
must be at least 80cm.
The heater radiates heat (from the cast-iron and through the glass) and it is recommended that all flammable
material (chairs, carpets, coffee tables) are at least 150cm away from the front of the unit.
The run of stove pipe should be as short as possible in order that heat retained by the flue gases, is used to
establish a good draw.
The rear wall must not be of flammable materials, otherwise it should be suitably protected.
There may be NO reduction in the flue diameter – UNDER NO CIRCUMSTANCES. This could result in the
“blowback” of fumes into the room as soon as the heater door is opened, and a reduction in the evacuation of
fumes.
The chimney must originate in the same room where the heater is installed.
Reducers on the air intakes are not permitted.
The flue must be homogenous.
Flue pipes or tubing used must be suitable for heater installations and be able to resist to chimney fires. The flue
must be able to withstand temperatures 50⁰C higher than the declared smoke/fume temperature for the unit –
whatever the installation method.
The height of the flue should not be less than 5 metres and should exit into “free” air at least 40cm above the
crest of the roof or any higher obstacle that may be within 8 metres of the chimney.
Any changes in the angle of the chimney must be as gentle as possible (a 45⁰ bend is highly preferable to a 90⁰
bend).
The draw should be between 12 and 15 Pascals during normal (average) operation and should drop to 5 Pascals
when running the unit on low. When running on a normal average setting the draw should not drop below 12
Pascals as the performance may be affected.
If there is too much draw, a damper can be installed in the flue/chimney
. If there is not enough draw it may be that
one of the points above has been disregarded.
If the chimney conduit is too large, the volume of air to heat is too large to overcome and a normal draw cannot
be established. In this case the chimney should be lined with tubing. The tubing used must conform to
regulations and be suitable for heater installations (see above).
Pottery chimney pots must be removed if they cause a reduction in the flue diameter.
Before connecting the heater the chimney must be checked to ensure that it is clean and, if necessary, the
chimney must be swept.
The heater should be installed by a professional and all national and local regulations should be adhered to.
An extractor operating in the same room as the heater can adversely affect the functioning of the heater.
Other heaters operating in the same room at the same time can also cause problems with the draw.