Ducting Of Ues Or Technical Slots; Con Guration Type B, Open Chamber And Fan Assisted For Indoors; Flue Gas Exhaust To Ue/Chimney - Immergas VICTRIX EXA 24 X 1 ErP Instruction And Recommendation Booklet

1.16 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, ue or technical slot (also
in new buildings) (Fig. 1-26). Ducting requires
ducts declared to be suitable for the purpose by
the manufacturer, following the installation and
user instructions, provided by the manufacturer
and the requirements of the standards in force.
Immergas ducting system. e Ø 60 rigid and
Ø 80 exible "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. e instructions in the project
or technical report must likewise be followed, in
cases provided for by the standard and current
technical regulations. e system or components
of the system have a technical life complying with
current standards, provided that:
- it is used in average atmospheric and environ-
mental conditions, according to current regula-
tions (absence of fumes, dusts or gases that can
alter the normal thermophysical or chemical
conditions; existence of temperatures coming
within the standard range of daily variation,
etc.).
- Installation and maintenance must be per-
formed according to the indications supplied
by the manufacturer and in compliance with
the provisions in force.
- e max. possible length of the Ø 60 exible
ducting vertical section is equal to 22 m.
length is obtained considering the complete
Ø 80 exhaust terminal, 1m of Ø 80 pipe in
exhaust, two 90° Ø 80 bends at boiler outlet.
X
- e max. possible length of the Ø 80 exible
ducting vertical section is equal to 30 m.
length is obtained considering the complete
exhaust terminal, 1m of Ø 80 pipe in exhaust,
two 90° Ø 80 bends at boiler outlet for connect-
ing to the ducting system and two direction
changes of the exible hose inside the chimney/
technical slot.
- e maximum possible length of the Ø 80 rigid
ducting vertical section is equal to 30 m.
length is obtained considering the complete
Ø 80 exhaust terminal, 1m of Ø 80 pipe in ex-
haust, two 90° Ø 80 bends on the boiler outlet.
1.17 CONFIGURATION TYPE B, OPEN
CHAMBER AND FAN ASSISTED FOR
INDOORS.
e appliance can be installed inside buildings
in or B mode; in this case, all technical rules
23 53
and national and local regulations in force, must
be complied with.
- Type B open chamber boilers must not be
installed in places where commercial, artisan
or industrial activities take place, which use
products that may develop volatile vapours
or substances (e.g. acid vapours, glues, paints,
solvents, combustibles, etc.), as well as dusts
(e.g. dust deriving from the working of wood,
coal nes, cement, etc.), which may be harm-
ful for the components of the appliance and
jeopardise operation.
- In con gurations B and B
23
not be installed in bedrooms, bathrooms or
in studio ats.
- e installation of appliances in B
gurations are only recommended outdoors (in
a partially-protected place) or in places that
are not lived in and which are permanently
ventilated.
e suitable kit referred to in paragraph 1.11
is must be used for installation.
16
C C
93 53
1-25
1.18 FLUE GAS EXHAUST TO FLUE/
CHIMNEY.
is
e ue exhaust does not necessarily have to be
connected to a branched type traditional ue.
e ue exhaust, for boiler clots installed in C
con guration, can be connected to a special LAS
type multiple ue. For B con gurations, exhaust
is only allowed into individual chimney or di-
rectly into the external atmosphere via a suitable
terminal.
is
ues must also only be connected to type C ap-
pliances of the same type (condensing), having
nominal heat inputs that do not di er by more
than 30% less with respect to the maximum that
can be attached and powered by the same fuel.
e thermo- uid dynamic features ( ue ow
rate, % of carbon dioxide, % humidity etc....) of
the appliances attached to the same multiple ues
or combined ues, must not di er by more than
10% with respect to the average boiler attached.
Multiple and combined ues must be specially
designed according to the calculation method
and requirements of the technical standards
in force, by a professionally quali ed company.
Chimney or ue sections for connection of the
ue exhaust pipe must comply with requisites of
technical standards in force.
, the boilers must
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and B con-
23 53
1-26
e multiple ues and the combined