Quickguide - HWAM® SmartControl™

6
Environment
Your HWAM® SmartStove™ is future-proof. It
ensures a clean environment; for you and
your neighbour. The HWAM® SmartControl™
has been developed by HWAM technicians
in collaboration with DTU (Technical Univer-
sity of Denmark), who have established its
well-functioning in the laboratory as well as
in the consumers’ homes. Firing and heating
with wood is CO neutral renewable energy.
Typically, the applied firewood comes from
the thinning of forests, hedges, and gardens
in the local area; in other words, necessary
maintenance of planted areas. Consequently,
processing and transport cause minor envi-
ronmental impact. Considering the fossil fuel
alternative, each user of a wood-burning stove
saves the society about -. tons of CO on
an annual average, according to the University
of Copenhagen.
The Chimney
Information on the chimney’s eect
New stoves are highly ecient and do not emit the same amount of heat into the chimney.
Therefore, it is crucial to understand the importance of ecient lighting to ensure good and
clean combustion. Imagine the chimney as the "stove’s engine." It functions by the natural
draught of the chimney resulting from hot air rising up through the chimney, thus creating
a vaccum in the stove. Air is then sucked into the stove which feeds the combustion with
oxygen. Hot air will always rise; the hotter the air, the faster the rise. A good chimney draught
provides a greater air intake and, thus, improved and cleaner combustion.
When the stove is not lit, e.g., at night, the chimney may get filled with cold air. As cold air will
always sink, an accumulation of cold air in the chimney may occur which can be dicult to
get rid of when lighting the stove.
To dissolve the cold air plug, try to leave the stove door open for  to  minutes before light-
ing the stove. This will make the cold air sink into the stove and out into the room. Alterna-
tively, try putting  to  crumpled newspapers on top of the arranged kindling firewood; they
will quickly heat up the cold air and provide draught in the chimney.
A chimney is not just a chimney!
An ancient brick and uninsulated chimney is not suitable for modern wood-burning stoves. As
a minimum, the chimney should be insulated with, for instance, Isokern elements or equipped
with a steel liner. Regardless of the chimney you have, the joints must be tight to avoid false
air intake which may reduce the air intake for the combustion.
An insulated high-quality steel chimney often produces the best result together with a high-
quality wood-burning stove. These two elements must always be considered as a whole.
Trees consume CO
to grow. Burning wood emits CO. Wood that perishes or decomposes in
nature emits the same amount of CO as wood that burns.