1.12 Chimney fire
In case of a chimney fire, which often results from
incorrect operation/maintenance or prolonged
use of damp wood, close the door and the air
supply completely, to help slow/smother the fire.
Call the fire department. The stove and chimi-
ney must be inspected before use again.
8
Heating value in wood
You have to use about 2.4 kg normal wood to
replace one litre of heating oil. All woods have
almost the same heating value per kg, which is
about 5.27 kW/hour for absolute dry wood.
Wood with a moistness of 18% has a efficiency
of about 4.18 kW / hour per kg, and one litre
heating oil contains about 10 kW / hour.
CO
2
release
At combustion 1000 litres of heating oil forms 3.171
tons CO
2
. As wood is a CO
2
neutral heat/energy
source, you save the environment about 1.3 kg CO
2
every time you have used 1 kg normal wood.
1.11 Operational problems
The chimney must be swept at least once a
year, we recommend the use of a NACS (natio-
nal association of chimney sweeps) registered
chimney sweep.
In the event of smoke or malodorous fumes are
being produced, you must first check to see
whether the chimney is blocked.
The chimney must, of course, always provide the
minimum draft necessary to ensure that it is pos-
sible to regulate the fire. Please note, how-ever,
that chimney draft is dependent on the weather
conditions. In high winds, the draft can become
so powerful that it may be necessary to fit a
damper in the flue gas pipe to regulate the draft.
When cleaning the chimney, soot and other
deposits may come to fall on the baffle plate,
remove and clean it. In cases where the wood
burns too quickly, this may be due to excessive
chimney draft. You should also check to make
sure that the door seal and ash pan seal is intact
and correctly fitting.
If the stove it generating too little heat, this may
be because you are firing with wet wood. In this
case, much of the heating energy is used to dry
the wood, resulting in poor efficiency, poten-
tially damaging the vermiculite and an increased
risk of soot deposits in the chimney.
