4.2 Fuel
The Cupola is optimized for, and must only be used with, liquid denatured ethanol – whose
burning produces only carbon dioxide and water vapour, the same components as in the air we
breathe out.
Warning! The fuel must not be preheated.
4.2.1 Recommended fuel quality
For Vauni Cupola we recommend Vauni ECO-FLAME which is the market’s most optimal bio-
ethanol fuel for use in chimney-free fireplaces and inserts. This product gives natural, smoke-
and soot-free flames with a neutral aroma, and can be ordered at www.vauni.com. In cases
where ECO-FLAME is not available, only liquid denatured ethanol (bio-ethanol) must be used,
which is sold under various trade names at building-supply stores, DIY-stores, petrol stations and
large markets. (Applies for Sweden – for other markets consult your distributor)
Denatured ethanol is an inflammable liquid, and therefore must be handled with great care – in
Sweden according to the prescriptions and general advice for handling inflammable liquids
(National Inspectorate of Explosives and Flammables, SÄIFS 2000:2). Handling of larger amounts
than 100 litres requires a permit for handling of inflammable goods (SÄIFS 1995:3). For more
information, see www.raddningsverket.se (Applies for Sweden – for other markets consult your
distributor)
Before adding fuel: it is very important that the correct quality of fuel is used – so check again to
be sure. Bio-alcohol in gelatinous form, or ethanol fuel for automobiles such as E85, must not be
used under any circumstances! If non-recommended fuel is used, it can lead to greatly reduced
characteristics and also constitute a potential health hazard with risk of personal injury. Faults
that arise due to use of incorrect fuel are not covered by the guarantee. If you feel uncertain,
consult with the personnel at the place of sale in order to ensure purchase of the right fuel
quality.
4.2.2 Refilling with fuel
Warning! Denatured ethanol burns with an almost invisible flame under certain conditions.
This may happen, for example, when the level in the burner is low. Therefore it is very important
that the fireplace is extinguished completely after use, and that it is allowed to cool for at least 15
minutes before more fuel is added. To add fuel in a burning fireplace is very dangerous and can
cause an explosion.
Note 1! Add fuel when the fireplace is about to be used – the burner has a safety function that
makes it harder to start when the fuel has been standing for more than 20 minutes. Read more at
point 4 in Section 4.1 Lighting the fireplace.
Note 2! The burner may contain fuel from previous firing. The tank’s total volume is 2 litres.
Therefore, do not add more than is needed according to point 5 below.