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1.19 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 evacuation
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 in-
structions, provided by the manufacturer and the requirements of
the regulations in force.
Immergas ducting systems
The 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 contained 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 te-
chnical 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:
- 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 6.7 m. This length is obtained considering
the Ø 80 complete exhaust terminal, 1 m of Ø 80 pipe in
exhaust, 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.
• The max. possible length of the Ø 80 flexible ducting vertical
section is equal to 27 m. This length is obtained considering
the complete Ø 80 exhaust terminal, 1 m of Ø 80 pipe in
exhaust, two 90° Ø 80 bends at boiler outlet.
C52
32
1.20 CONFIGURATION TYPE B, OPEN
CHAMBER AND FAN ASSISTED FOR
INDOORS
The appliance can be installed inside buildings in B22 or B52
mode; in this eventuality, all technical rules and national and lo-
cal regulations in force, must be complied with.
