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1.20 DUCTING OF FLUES OR TECHNICAL
SLOTS
Ducting is an operation through which, via the introduction of
one or more relevant pipes, one achieves a system for the evacua-
tion of the combustion products of a gas appliance, made up from
the coupling of an existing or new ducting pipe with a chimney,
flue or technical slot (also in new buildings) (Fig. 32).
Ducting requires ducts declared to be suitable for the purpose by
the manufacturer, following the installation and user instruc-
tions, provided by the manufacturer and the requirements of the
regulations in force.
Immergas ducting systems
The Ø 60 rigid, Ø 50 and Ø 80 flexible and Ø 80 rigid
"Green Range" ducting systems must only be used for
domestic use and with Immergas condensing boilers.
In any case, ducting operations must respect the provisions con-
tained in the standard and in current technical regulations; in
particular, the declaration of conformity must be compiled at the
end of work and on commissioning of the ducted system.
The instructions in the project or technical report must likewise
be followed, in cases provided for by the standard and current
technical regulations.
To guarantee reliability and operation over time of the ducting
system, make sure:
- it is used in average atmospheric and environmental condi-
tions, according to current regulations (absence of combustion
products, dusts or gases that can alter the normal thermophysi-
cal or chemical conditions; existence of temperatures coming
within the standard range of daily variation, etc.).
- Installation and maintenance must be performed according to
the indications supplied by the manufacturer included with the
"green range" ducting system chosen and in compliance with
the regulations in force.
- The maximum length specified by the manufacturer must be
respected; in this regard:
• The max. possible length of the Ø 80 flexible ducting vertical
section is equal to 18 m. This length is obtained considering
the Ø 80 complete exhaust terminal, 1 m of Ø 80 pipe in ex-
haust, two 90° Ø 80 bends at boiler outlet for connecting to
the ducting system and two direction changes of the flexible
hose inside the chimney/technical slot.
You can also install an additional Ø 50 flexible ducting
system the specifications of which are found on the rele-
vant instructions sheet inside the kit.
1.21 CONFIGURATION TYPE B, OPEN
CHAMBER AND FAN ASSISTED FOR
INDOORS
The appliance can be installed inside buildings in B
in this case, all technical rules and national and local regulations
in force, must be complied with.
For installation, the cover kit must be used, referred to in
(Par. 1.14).
C
53
32
or B
mode;
23
53
31
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