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2 Fuels / Settings
2.1 Fuels
Low smoke, trouble-free operation of the stove and a supply of heat at the nominal level
with a chimney draught of 12 Pa are only guaranteed when you use the following fuels and
no others.
Only use natural, dry chopped firewood with a remaining humidity of max. 20% and lignite
(brown coal) briquettes.
Type of fuel
Lignite briquettes
Hardwood
Softwood
Non-permitted fuels include:
Rubbish, fine chips, pellets, bark, chips from planing, coal slack, damp wood or wood
treated with preservative, paper, pellets, cardboard or similar. For lighting use wood
shavings or barbecue lighters. Never use liquid fire starters!
The first time the stove is heated there may be some smoke and an unpleasant
smell. Make sure that the room is well ventilated (open windows and doors) and heat
for at least an hour at the maximum nominal heat load. If the maximum temperature
is not reached the first time the stove is heated, then there may be further
Maximum fuel quantities per load
Fuel
Lignite
Wood
2.2 Combustion airflow settings
The settings must always be as shown.
Lighting
Firewood
Lignite briquette
Lignite briquette
Not in use: do not add any more fuel
unpleasant smells at a later date.
2 kg (2-3 briquettes) at nominal heat capacity
6.2 kg (8-9 briquettes) for slow burning
2.6 kg (about 2 pieces)
Fuel
Nominal heat output
Nominal heat output
Long-term
Heating value appr. kWh/kg
PLEASE NOTE:
K 139F
Table 1
Start damper
setting
open
closed
closed
closed
closed
Table 2
32
5,3 – 5,5
4,0 – 4,2
4,3 – 4,5
Temperature
Combustion
control
duration in hrs
3
1
3
0-1
approx. 12
0
-
approx. 1
approx. 3
-
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