Types Of Wood; Quantities Of Wood - Spartherm Premium V-1V-87h Instructions De Montage

2.1.2 T YPES OF WOOD
The different types of wood all contain roughly the same amount of heat
energy per net kg of wood mass. However, each type of wood has a different
volume for a given weight because the cellular structure of the wood varies in
terms of cell size and density. This fact is depicted in the technical values by
raw density. In this case, the wood does not contain any water, and wood is
weighed by the 1 m 3 .
The best wood for starting a fire are those with a low density because they
light easier, whereas for adding more fuel to an existing fire, wood with a
higher density is more suitable.
Wood hardness Type of wood*
Softwood Poplar
Spruce
Fir
Pine
Hardwood Beech
Ash
Oak
* Other domestic types of wood can be used too, but they are not readily available commercially, nor in
large quantities.
Due to the fact that operation of a fireplace insert, depending on the design
of the tiled stove or plaster stove(e.g. used for heating, as an oven or for
ducted hot air and other uses), involves different requirements for operation
(the amount of fuel to add, the refuelling interval, etc.), you should obtain
advice and guidance from the fireplace installer before using your fireplace
insert for the first time.
Here are a few tips and items of information:
• The best fuel is air-dried, untreated firewood with a residual humidity of
18 %.
3
Gross density in kg/m
370
380
380
430
580
580
630
GB 6
• The wood should be stored in a protected, dry and well ventilated place.
• If the wood is too wet, it will not provide such effective heating, the chim-
ney will soot up and the window will soil more rapidly.
• No open operation with conifer timber containing resin. These types of
wood tend to produce sparks.
Our fireplace inserts are designed for operation with firewood and wood bri-
quettes in acc. with DIN 51731. The use of other fuels is not permitted.
Never any under circumstances should you burn any of the following:
• wet timber, bark offcuts, nut shells or similar woody plant parts
• MDF or coated board materials
• paper, paperboard and old clothes
• plastics and foams
• wood treated with a timber preserving agent
• solid or liquid non-wood materials
• flammable liquids

2.1.3 QUANTITIES OF WOOD

Nominal heat output* Wood feed quantity**
in kW in kg/h
5,0 - 6,9 1,5 - 2,3
7,0 - 9,9 2,3 - 3,3
10,0 - 12,9 3,3 - 4,3
13,0 - 15,9 4,3 - 5,3
16,0 - 21,0 5,3 - 7,2
* Please refer to the type plate for the applicable nominal heat output, e.g. for the Varia model range.
** The actual quantity of wood depends on the type of wood and its related properties.
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