|Purchase of stove outside
|Can a RAIS stove purchased in another country be installed in
my home country?
Any stove must be installed according to local rules and
regulations. You should consult your local chimney sweep or stove
professional about the rules and regulations that apply in your
Since approval guidelines differ from country to country you
should ask your RAIS stove dealer if the stove you are interested
in purchasing is approved for the country you want to install it
in. It is also advised that you contact a local chimney sweep to
find out if the stove can be installed according to local rules and
|Does RAIS manufacture pellet stoves?
No, RAIS does not manufacture stoves that use pellets as
In the Danish market a pellet stove based on the RAIS Mino is
available through A/S Dansk Shell under the name BioLine.
You can get more information regarding BioLine from Energihuset
Dansk Shell A/S (tel. +45-70 10 27 50).
|What is better, a stove or an inset?
They are equally good, and very different sources of heat.
A stove and an inset can be best compared in their effectiveness
and efficiency. In practice a freestanding stove gives out quicker
warmth than an inset. However, an inset is able to accumulate heat
to emit even warmth, which a freestanding stove can also do if it
has plenty of soapstone covering it.
Fireplace insets are highly efficient sources of heat in
contrast to traditional open fireplaces that allow valuable energy
to go to waste. Fireplace insets can be designed to fit into an
existing open fireplace or in a new construction.
Both solutions are good, and the choice can be made based on the
design of the living space and individual taste.
|Which type of wood has the best heating value?
All types of wood heat the same per kilogram if they have the
same water content. However, there are large differences between
various types of wood. For example, spruce weighs a third less in
cubic meter than beech, which means that it takes 50% more spruce
to give out the same amount of heat as beech. So, 2 cubic meters of
beech when heated gives out the same warmth as 3 cubic meters of
Therefore it is important to compare the price of various types
of wood, especially when buying a pallet.
How a type of wood behaves during actual use determines which
wood is best for your heating needs. Woods such as beech and ash
are good for burning because they produce a nice flame and have a
high burn value, which means they emit a large amount of heat when
burning. In addition, woods with high burn value also create a
beautiful layer of ember. On the other hand, woods such as birch
burn calmly and are beautiful to look at with their white bark, but
have a low burn value.
Relative weight between various types of wood:
|Other types of solid fuel
|Can coal or coke be used instead of firewood in a RAIS
The firebox and air supply system in a RAIS stove is developed
and manufactured for optimal combustion of firewood. The approval
of RAIS stoves in your country is based on it being a wood-burning
stove or inset.
Only wood must be used in a RAIS wood-burning stove or
Some manufacturers of wood-burning stoves claim that coke and
brickets may be used as fuel in their stoves. These types of fuel
have considerably higher burn values than wood and when used to
heat can surpass the maximum heat designated for the stove. Using
fuel that has such a high burn value in a wood-burning stove may
cause over firing, which can destroy the stove.
If a RAIS stove breaks down due to over firing, the guarantee is
|How much is a cubic
measure of wood?
|What is the difference between a box cubic meter of firewood
and a forest cubic meter of firewood? (Danish expressions)?
In Denmark firewood is measured and sold in various unit
measures. It is important to ask the seller which unit measure is
being used for particular firewood to evaluate and compare prices
A box cubic meter of wood (in Danish: "kasserummeter") is the
amount of split firewood that can be tossed randomly into a box
that measures 1x1x1 meter. Since the wood is not tightly stacked in
the box there is a lot free space in between the pieces of
firewood. Therefore there is only about 0.45 cubic meter of wood in
a box cubic meter. However, this amount can vary since wood is
stacked randomly in the box.
A forest cubic meter of wood (in Danish: "skovrummeter")
consists of whole logs about 2 m long that have not been split or
cut. When whole logs are stacked in the forest less of open space
is there between the logs. There is approximately 0.65 cubic meter
of wood in a forest cubic meter.
A stacked cubic meter of wood (in Danish: "stablet rummeter")
consists of cut and split pieces of wood about 33 cm in length
stacked tightly. There is approximately 0.70 cubic meter of wood in
a stacked cubic meter.
|What kind of chimney is necessary for a stove?
One of the most important prerequisites for a well-functioning
stove is that the chimney be well-functioning as well. The chimney
can be considered the "engine" of the stove, and if it does not get
the correct draught it does not perform optimally. New and modern
stoves place higher demands on the chimney and draught than older
stoves. You can always consult with your local chimney sweep, who
can also check whether your chimney is functioning optimally.
Regardless of whether your stove is installed with a masonry or
brick chimney, or a steel chimney, the same rules apply.
Installation of brick chimney:
When a stove is installed with a brick chimney, a wall thimble
is placed in the chimney, and the stove pipe is then inserted into
the wall thimble. The connection between the stove pipe and the
wall thimble must be sealed using a special sealing rope to avoid
any ventilation that can cause improper draught in the chimney.
Installation of steel chimney:
From the stove and up to 225 mm below combustible ceiling
material you can use a single wall stove pipe. From 225 mm below
combustible ceiling material and up through the ceiling and roof
you must use double wall chimney pipe.
Good draught results when:
- There is a big difference between the inside and outside
- In clear weather
- The chimney has the right height. Please speak with your stove
dealer or your local chimney sweep to find out what the right
height for a chimney in your area should be.
Poor draught results when:
- The temperature difference is too small, for example the
temperature in the firebox and chimney is quite low compared to the
outside temperature. This can happen if the wood is not burning
with a good flame, or if the chimney is poorly insulated, thus
allowing heat to be released through the chimney walls and not up
through the chimney.
- The outside temperature is too high, for example in the
- The chimney is not high enough, so that it is covered by tall
trees or rooftops, in which case there is a big danger of return
- False air can enter the chimney through a missing or broken
|Where can I purchase a RAIS stove?
RAIS stoves are sold through authorised RAIS dealers and
speciality stove shops.
RAIS dealers are trained to give advice to customers regarding
RAIS stoves, the use of the stove and their installation, as well
as additional products, such as accessories and chimneys.
An authorised RAIS dealer will have a sticker on the store
front, either on a door or window, or the dealership may carry an
authorisation letter inside the store.
You can find the RAIS dealer nearest you under "Find your
nearest authorised RAIS dealer."