Unical NOVAIREX 35, Инструкция по установке и обслуживанию

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Tec
hnical f
eatures and dimensions
3.9.2 - EXHAUST THROUGH ROOF BY MEANS OF TRADITIONAL FLUE
The pellet combustion flue gas can also be discharged using a
traditional pre-existing flue as long it is made to standard (see
UNI 10683).
We will briefly list some of the main features highlighted by the
standard which characterise a good chimney:
- Adequate insulation especially in the outside section exposed
to the atmosphere;
- Constant internal cross-section (there must be no cross-sec-
tion constrictions);
- Made with material resistant to high temperatures, to the
action of combustion products and to the corrosive action of
condensation which could be formed;
- Predominantly vertical with deviations no greater than 45°;
It is recommended to provide a solid material and/or conden-
sation collection chamber which can be inspected through an
airtight door.
It is recommended to abide by that established by standards UNI
9615 and 9731 for the dimensioning of the chimney cross-sec-
tions and anyhow not to make pipes with a cross-section less
than 100 mm.
If there are larger cross-sections, a steel pipe must be inserted
inside the masonry duct.
The steel pipe must be sufficiently insulated
with high temperature resistant material and
sealed from the outer chimney.
Draught limiter/
adjuster
Inspectionable soot container
with possible condensate
drain