Dal Zotto Valli idro Manuel Utilisateur page 56

Š counter-slope sections are not allowed;
Š the smoke ducts must have, along their entire length, a diameter that is no less than that of the attachment of the appliance
exhaust pipe; any section changes are allowed only on the inlet to the chimney;
Š they must be installed so as to limit the formation of condensation and prevent their release from the joints;
Š they must be positioned at a distance no less than that indicated in the product specifications from combustible materials;
Š the smoke channel/duct must allow to collect the soot and to be cleaned using a swab and inspected after being
disassembled, or through inspection openings when not accessible from inside the appliance.
ADDitiOnAL requireMentS fOr APPLiAnceS fitteD With An eLectric fAn fOr fuMeS eXPuLSiOn
For the heat generator appliances equipped with electric fan for expelling fumes, the instructions below must be followed:
Š The horizontal sections must have a minimum upward slope of 3%
Š The length of the horizontal section must be minimal and, in any case, no longer than 3 metres
Š The number of direction changes including the one due to the use of the "T" element must not be more than 4.

eXAMPLeS Of cOrrect cOnnectiOn tO the chiMney
Installation with internal
flue
Insulated flue
it iS nOt recOMMenDeD tO inStALL A 90° benD AS the firSt initiAL PArt, Since the ASh WOuLD bLOcK the PASSAge Of the
fuMeS in A ShOrt tiMe, cAuSing PrObLeMS tO the StOve DrAught. See figureS beLOW:
56
Installation with internal -
external flue
Protection from
rain and wind
Condensation-proof
"T" fitting with
inspection plug
Ash deposited in
the 90° bend
| engLiSh
Protection from
rain and wind
Insulated flue
Insulated
condensation-
proof "T" fitting
with inspection
plug
Ash deposited in
the 90° bend