12 English
Chimney Draught
The chimney is an important factor for getting the
most out of the hearth. Even the best stove will
not work properly if the chimney does not have the
right dimensions or is not in good working order.
Recommended draught is 14-25 Pascal.
Draught Conditions
The draught is mainly controlled by: gas temperature,
outside temperature, air supply and the height of the
chimney. The draught increases when:
The chimney becomes warmer than the outside air•
The active length of the chimney increases (over•
the hearth)
Good air supply to the combustion•
It can be difcult to obtain the right draught conditions
in case the chimney is too large in relationship to
the replace, as the chimney does not heat up well
enough. If possible, stove a smaller chimney pipe.
Draught that is too strong can also be controlled with
a damper.
Heat Creation and Distribution
There are two different types of heat: radiation and
convection heat. The heat created in the space
between the stove and surround is what is called
convection heat. Cold air is sucked in at oor level
under the stove. The stove then heats up this air,
which expands and as a result blows out through the
vents on top of the surround. This heat circulation
ensures a good distribution of heat throughout the
home. The best location for the replace is in the
middle of the house in the room that requires the most
heating. The heat released from the front of the stove
is what is called radiation heat.
Secondary Combustion
This new type of stoves is constructed so that it
pollutes very little and at the same time it uses the
energy of the wood efciently. Hence, with less wood
the same heat effect is achieved, and thus less ashes.
The stoves from Nordpeis have secondary
combustion, i.e. the combustion happens in two
phases: rst the wood burns, and then the gases from
the fumes are lit by the hot air.
Respect for the Environment
Our stoves represent a new generation of replaces
that are more efcient, are clean burning and when
used properly release low levels of soot and particles.
In the future it will not only be economical factors
driving the necessity for low consumption, but
requirement for environmental solutions will
continuously become more demanding. This requires
that we use renewable sources of energy that cause
little pollution or damage to the environment. Wood
fuel is labelled as renewable resource / biofuel.
Warning: Be careful that the product is not
overheated, as this can cause irreparable
damage, which is not covered by the warranty.
The stoves have a plaque with the SINTEF number on
the inside of one of the legs. Casa Sintef nr: 110-0251.
Complete product documentation can be downloaded
at www.nbl.sintef.no. The CE mark is situated on
inside of the hatch door.
9. Advice on making up a re
The best way to make up a re is with the use of re
briquettes. Newspapers cause a lot of ashes and
the ink is damaging for the environment. Advertising
yers, magazines and milk cartons etc are not suitable
for making up a re.
It is extremely important that clean and dry wood is
used at all times. Humid wood requires a lot of air for
the combustion, as extra energy/heat is required for
drying the humid wood. The heat effect is therefore
minimal. In addition this causes soot creation in the
chimney with the risk of creosote and chimney re.
Combustion complications
Too much air supply to the combustion creates an
uncontrollable ame that very quickly will heat up the
entire stove to extremely high temperatures (valid
when heating with closed or almost closed door).
Never completely ll up the burn chamber with wood,
as this can reduce the lifespan of the Thermotte®
plates signicantly as it can cause ssures in the
plates.
Some technical information on combustion
In order to obtain an optimal combustion, the
temperature needs to reach 600-800ºC. It is
recommended to keep an even re with a small
amount of wood. If too many logs are put on the hot
ember, the air supply will not be sufcient for reaching
the require temperature, and the gases will go out
un-burnt. For this reason it is important to increase the
air supply just after adding the logs in order to have
proper ames in the burn chamber so that the gases
are burnt.
Use split wood logs rather than whole round pieces of
wood. This will give a better heat effect and cleaner
combustion. The stoves from Nordpeis are intended
for, and only approved for, wood combustion.
Warning: NEVER use a lighting fuel such as
petrol, parafn, methylated spirits or similar for
lighting a re. This could cause you injury as
well as damaging the product.
Warning: NEVER use impregnated wood,
painted wood, plywood, chipboard, rubbish,
milk cartons, and printed material or similar. If
any of these items are used as fuel the warranty
is invalid, as they can contain hazardous,
etching and dangerous fumes when burnt.
In addition the poisonous gas dioxin can
develop, that can damage the stove and be
harmful to the environment.