LASIAN BIOSELF, User And Installation Manual

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COD. 79101EN.00 11/2013
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4.6 DUCT OR CHIMNEY
Each appliance must have a vertical duct or chimney to expel outside the fumes produced by combustion.
Flue duct must meet the following requirements:
Do not connect to any other fireplace, boiler, boiler or any kind of extractor (fig. 1)
It must be adequately separated from combustible or flammable materials by a cavity wall or an insulating material.
The inner section should be uniform, preferably circular: square or rectangular sections must have rounded edges
with a radius of at least 20 mm; regular bends without discontinuities, deviations from the axis no greater than 45°
(Fig. 2).
Each appliance must have its flue duct with a section equal to or greater than the diameter of the flue outlet duct of
the boiler and a height of not less than that declared (See table in paragraph 4.7.2).
Two boilers, fireplace and a boiler, an oven and a wood boiler, etc. should never be used in the same environment
since the draw of one may damage the other. Collective type ventilation ducts cannot be used either as they could
cause a vacuum in the environment of installation, even if installed in adjoining or communicating rooms.
It is forbidden to perform fixed or mobile openings in the chimney to connect a different appliance.
It is advisable that the flue is equipped with a solid material collection chamber and possible condensations
beneath the mouth of the duct to be easily opened and inspected from the door hermetically.