klover TKR 35, Руководство пользователя

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44
THE WOOD TO BURN
Wood features
Wood is one of the most precious materials offered by nature.
For heating purposes, it must be verified that the features
of the wood satisfy some important requisites that must not be
ignored, the most important of which is without a doubt the correct
seasoning or drying, in other words the wood must have the correct
amount of humidity, around 10-15%, therefore also the
period of the year in which it is felled becomes important. This should
coincide with the winter period. The correct seasoning (at least 2
years) allows to have a fuel with excellent yield and not very pollutant.
It must be kept in covered, well-aired places, already cut appropriately
into pieces suitable for the hearth of the fireplace heating system.
The wood is divided into softwood and hardwood on the basis of the
weight kg of a cubed metre of material. A softwood that weighs about
300- 350 kg/m3 is fir, pine, poplar, European alder, chestnut, willow,
while hardwood that weighs about 350-400 kg/m3 is beech,
ash, carpine, acacia and oak.
Softwood ignites easily, is consumed quickly and
develops a long flame and is used in ovens that require a
long flame pass. Hardwood is more compact, the
combustion is slower with short flame, it lasts longer and is more
suitable for domestic central heating.
The wood to be burned for heating purposes has
different features according to the plant variety from which it is
obtained. Not all woods are the same and the features regarding the
drying time and the calorific value vary from plant to plant.
The calorific value depends on the level of humidity and its density.
Top quality woods are beech, ash carpine and acacia.
Avoid resinous woods as they could
compromise the duration of the fireplace heating system .
In fact, resinous woods have a rather sooty combustion and
therefore, the flue and fireplace heating system must be cleaned more
often.