Manual Hwam 3740 (page 14 of 20) (English)

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Page 14 of 20 pages

Chimney

The chimney is the “engine” of the stove and it is crucial for the functioning of the woodburning stove.

The chimney draft provides a partial vacuum in the stove. This vacuum removes the smoke from the stove,

sucks air through the dampers for the so-called glass pane rinse which keeps the glass free of soot, and

sucks in air through both primary and secondary dampers for the combustion.

The chimney draft is created by the differences in temperature inside and outside the chimney. The higher the

temperature within the chimney, the greater the draft. It is therefore crucial that the chimney is heated well

through before regulating the air supply and thus limiting the combustion in the stove (a brick chimney takes

longer to warm up than a steel chimney). On days where the weather and wind conditions create insufﬁcient

draught inside the chimney, it is even more important to warm up the chimney as quickly as possible. The

trick is to quickly get some ﬂames going. Split the wood into extra ﬁne pieces, use an extra ﬁrelighter, etc.

If the stove has not been used for a longer period, it is important to check that the chimney pipe is not blocked.

It is possible to connect several devices to the same chimney. However, it is important to ﬁrst check the

applicable rules.

Chimney sweeping

To prevent the risk of chimney ﬁres, the chimney must be cleaned every year. The ﬂue duct and the smoke

chamber above the bafﬂe plate must be cleaned together with the chimney. If the chimney is too tall to

be cleaned from above, it must be equipped with a soot door.

In case of a chimney ﬁre, close all dampers and call the ﬁreﬁghters. Before any further use, have the

chimney checked by the chimney sweeper.

FIrIng manual - wood

Your ﬁrst heating session

The lacquer will be fully hardened after the stove has been used, and the door and the ashpan should be

opened very carefully as there will otherwise be a risk that the gaskets will stick to the lacquer. In addi

tion the lacquer may initially give off an unpleasant odour, so make sure that the room is well ventilated.

Tips about fuel

Approved fuel types

The wood burning stove is EN approved for combustion of wood only. It is recommended to use dried

chopped wood with a water content of 12-18%. Stoking a ﬁre with wet wood results in soot, environmental

problems, and a less efﬁcient fuel economy. It is recommended to purchase a hygrometer to continuously

check that the ﬁrewood has the correct moisture content before using it for ﬁring.

Recommended wood types

All types of wood, for instance birch, beech, oak, elm, ash, conifers, and fruit trees can be used as fuel in your

insert. The great difference is not in the fuel value, but in the weight of the wood types per cubic metre.

Beech weighs more per m

of wood than common spruce, for instance. This is why more common spruce

is required, in terms of volume, to obtain an amount of heat similar to that of beech. Heavy types of wood

such as ash, beech, oak and elm are generally not that easy to light up. In addition, they burn more slowly and

give off more embers. Light types of wood such as birch, maple, spruce and pine are more easy to light up.

They burn faster and give off fewer ambers. You may therefore take advantage of the light types of wood for

lighting and use the heavier types of wood to ensure a longer burning time.

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Others manual(s) of Hwam 3740

Hwam 3740 User Manual - German - 20 pages

Hwam 3740 User Manual - Dutch - 20 pages

Hwam 3740 User Manual - French - 20 pages

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Hwam 3740 Manual

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