The pellet stove is one of the most popular technological heating products in recent years. More and more people are choosing to equip themselves with these products for their homes, but also for shops or clubs. In fact, pellet stoves are products that allow you to save in the long term, heat the room well without dirtying, and are much more efficient and safe than fireplaces.
In recent years we often hear about the possibility of obtaining a flue-free pellet stove. But it’s really possible
Actually no. There is a lot of misinformation on this point, but what you need to have clear in mind if you are thinking of buying a pellet stove and that it is not possible to ignore the flue to have one, as is well explained in this in-depth analysis on the stove a pellets. In order to have a pellet stove the flue is therefore absolutely essential, because this stove burns fuel and the latter must be evacuated from the houses: the flue allows this, not only that, the pellet stove produces fumes with a temperature that even touches 200 degrees, which must be expelled.
But then when we talk about a “ventless pellet stove”, what are we referring to
To speak clearly, we often hear this phrase used, very captivating for all those who would like to equip themselves with a pellet stove but do not want to build flues.
Basically, the term “pellet stove” refers to a stove with a wall-mounted smoke outlet. The pellet stove with smoke outlet on the wall, which therefore allowed to have a stove without building an entire flue (as the fumes were moved abroad with a hole in a perimeter wall) and illegal starting from 2012 , because it has been recognized as dangerous for people.
Things have undergone a change since the introduction of UNI 10683 on heat generators powered by wood or other solid biofuels. Since that time it has become mandatory to use pipes that overhang the roof slab. The exhaust of the fumes of the pellet stove, therefore, must end on the roof and a mechanism must also be implemented that allows the fumes to be extracted in the event of a blackout, i.e. where the power supply should be suspended. Wall drain: why it is not advantageous
The wall drain, however, is not very advantageous because it compromises the optimal functioning of the pellet stove: this is why most pellet stove manufacturers do not recommend its use.
The risk is that there will be a return of smoke and the very dangerous introduction of carbon monoxide into the room, as well as that the performance of the stove is not very good.
Not only that: the wall discharge of the pellet generator is against the law, as it contravenes the Ministerial Decree 37/08, the UNI 10683: 2012 standard, the DPR 412/1993. The law requires that stoves that run on pellets are equipped with a roof exhaust flue system and there are no exceptions allowed.

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