L' ARTISTICO 40113 Manual De Instrucciones página 27

PELLET STOVES
ENG
(Rev. 15/10/2013)
Smoke evacuation system components designation example:
Temperature class (es: T400 minimum, T450-T600 suggested)
The smokestack temperature class (as per UNI EN 1443) should not be lower than the maximum exhaust gasses
temperature declared by the stove manufacturer.
For all appliances as per UNI EN 14785 (appliances for home heating burning wooden pellet as fuel – requirements
and testing procedure) temperature class lower than T400 are not allowed. In any case always check the stove data
sheet for technical details but temperature Txxx should be at least 50 °C higher than the maximum smoke
temperature.
Pressure class (smoke tightness) N
Since all smokestacks must work in depression, the pressure class will be N = negative
By the end a smokestack showing this tag is perfect to fit a pellet stove: T450N1D2GXX
Soot fire resistance class G
All smokestacks connect to appliances burning solid fuel must be soot fire resistant; the designation letter will
therefore be G followed by the distance in millimeters (XX) (as per UNI EN 1443) from flammable materials. The
chimney has to be build as UNI 10683 regulation, for all other countries, accordance with local and national
regulations in force.
9. CONNECTING TO THE EXISTING SMOKESTACK
The connection to the existing smokestack has to fulfill the Italian UNI 10683 regulation. Piping with classification "O"
and minimum distance in millimeters xx is allowed provided that in case of soot fire all connecting piping will be fully
replaced in order to restore the original conditions. Please make sure only 3 direction changing of maximum 90° and
a 4 meters horizontal segment are allowed (check following examples) .
Example with 2 bends 90° Example with 3 bends 90° (maximum allowed)