Correct operation of your stove, Floor load capacity, Combustion air – Austroflamm Uno Back User Manual
Page 8: Stove pipe connection, Approved fuels, Maximum amount of fuel, Clean burning, Making a fire

Uno Back
6 english
Floor load capacity
Make sure that the load capacity of the supporting 
construction is sufficient to carry the weight of the 
entire unit
, before the heating unit is installed.
Combustion air
Being the user of the stove you must take care of a 
sufficient combustion air supply. Sealed-up windows 
and doors may not allow a sufficient combustion air 
supply or disturb the draught behaviour of your stove. 
Please ensure the additional supply of fresh 
combustion air if necessary. For details please 
consult your specialist retailer
Stove pipe connection
For your own safety stringent laws apply for 
connecting the stove pipes to the chimney. Your 
professional dealer or distributor knows these laws. 
Please have your certified retailer carry out the 
connection of your stove
.
3. CORRECT OPERATION OF YOUR STOVE
Approved fuels
Dry, well cured and natural wood (hardwood 
preferred), wood briquettes, lignite briquettes. 
Maximum amount of fuel
Maximum amount of fuel to be added: 1,7 kg wood or 
briquettes. Larger amounts of fuel can lead to 
overheating and thus damage the stove. 
Clean burning
The wood must be dry (relative wood moisture 
< 15%) and untreated and the right amount of wood 
must be burned in order to ensure a clean fire that 
releases only small amounts of emissions. 
 
Making a fire
For the correct and safe operation of your stove 
please pay attention of the chimney developing the 
necessary feed pressure. This must especially be 
considered before the initial operation (or e.g. after 
the summer heating break) and during the mid-
season heating periods (e.g. at strong wind, etc.). 
If there is not enough feed pressure, please light only 
some paper or small kindling first, in order to “warm 
up” the stove and the chimney. 
Fully pull out both levers for the combustion air and 
the grate (position “AUF” fig. 2, also fig. 3). 
 
Place 2-3 logs (approx. 1,3 kg in total) crossways in 
the combustion chamber with sufficient distance from 
each other (min. 2 cm), on top of that place some 
softwood chippings and some ignition aid and light. 
 
Close the door! 
.
Fig. 3:
before lighting
We recommend to let the first load burn down without 
changing the air lever position. 
As soon as no visible flames are left (only embers in 
the combustion chamber), you can put another load 
of logs (approx. 1,7 kg) in the combustion chamber if 
desired. 
 
When reloading the stove please repeat the 
procedure as mentioned under “first lighting”: air lever 
position on “AUF” (= open), open door carefully, place 
logs, close door. 
 
After a few minutes, when the logs burn well on all 
sides (bright, high flames), you can adjust the heat 
output with the air lever (lever on max. position “AUF” 
= maximum heat output), the flames should be yellow 
and never look blueish or have black tips (otherwise 
add more air) – see fig. 4. Never close air supply 
completely during operation. 
symbol figures
