Immergas Flue Systems - Immergas Maior Eolo 24 4E Installation Manual

1.7 IMMERGAS FLUE SYSTEMS.

Immergas supplies various solutions separately
ES
from the boiler regarding the installation of air
intake terminals and flue extraction, which are
fundamental for boiler operation.
PT
Important: The boiler must only be installed
together with an original Immergas air intake
and flue gas exhaust system. This system can be
identified by an identification mark and special
GR
distinctive marking bearing the note: "not for
condensing boilers".
The flue exhaust pipes must not be in contact with
CZ
or be near to flammable materials. Moreover,
they must not pass through buildings or walls
made of flammable material.
See following paragraphs for the detailed descrip-
HU
tion of the kits available.
Positioning of double lip seals. For correct
positioning of lip seals on elbows and extensions,
IE
follow the direction of assembly given in figure
(Fig. 1-9).
• Resistance factors and equivalent lengths. Each
flue extraction system component has a Resi-
stance Factor based on experimental tests and
specified in the table below. The resistance factor
for individual components is independent from
the type of boiler on which it is installed or the
actual dimensions. It is, however, conditioned
by the temperature of the fluids that pass throu-
gh the pipe and therefore varies according to
applications for air intake or flue exhaust. Each
single component has a resistance corresponding
to a certain length in metres of pipe of the same
diameter; the so-called equivalent length, obtained
from the ration between the relative Resistance
Factors. All boilers have an experimentally obtaina-
ble maximum Resistance Factor equal to 100. The
maximum Resistance Factor allowed corresponds
to the resistance encountered with the maximum
allowed pipe length for each type of Terminal
Kit. This information enables calculations to be
made in order to verify the possibility of various
configurations of flue extraction systems.
146
1.8 INSTALLAZIONE ALL'ESTERNO
IN LUOGO PARZIALMENTE
PROTETTO.
N.B.: a partially protected area is one in which the
appliance is not exposed to the direct action of the
weather (rain, snow, hail, etc..).
• Configuration type B, open chamber and fan
assisted.
The relevant terminal must be used for this
configuration (present in the intake kit for the
installation in question), which must be placed
on the central hole of the boiler (Fig. 1-12). Air
intake takes place directly from the environment
in which the boiler is installed and flue exhaust
in individual flue or to the outside.
In this configuration the boiler is classified as
type B .
22
With this configuration:
- air intake takes place directly from the environ-
ment in which the boiler is installed and only
functions in permanently ventilated rooms;
- the flue exhaust must be connected to its own
individual flue or channelled directly into the
external atmosphere.
The technical regulations in force must be
respected.
Flue gas separator adjustment. For correct
functioning of the boiler in configuration with
direct intake it is necessary to regulate the flue
gas shutter according to that stated in the relative
tables (Fig. 1-14).
• Cover kit assembly (Fig. 1-11). Remove the
two plugs and the gaskets present from the two
lateral holes with respect to the central one. Now
cover the right intake hole using the relevant
plate, fixing it onto the left side using the two
supplied screws. Install the Ø 80 outlet flange on
the central hole of the boiler, taking care to insert
the gasket supplied with the kit and tighten by
means of the screws provided. Install the upper
cover, fixing it using the 4 screws present in the
kit, positioning the relevant gaskets. Engage the
90° Ø 80 bend with the male end (smooth) in
the female end (with lip seal) of the Ø 80 flange
unit until it stops. Introduce the gasket, making
it run along the bend. Fix it using the sheet steel
plate and tighten by means of the straps present
in the kit, making sure to block the 4 gasket
flaps. Fit the male end (smooth) of the exhaust
terminal into the female end of the bend 90°
Ø 80, making sure that the relevant wall sealing
plate is already fitted; this will ensure hold and
joining of the elements making up the kit.
Fig. 1-9
• Coupling of extension pipes. To install push-
fitting extensions with other elements of the
flue extraction elements assembly, proceed as
follows: Install the pipe or elbow with the male
side (smooth) in the female section (with lip
seal) to the stop on the previously installed
element. This will ensure sealing efficiency of
the coupling.
Max. length of exhaust duct. The flue pipe
(vertical or horizontal) can be extended to a
max. length of 12 m straight route, using insulated
pipes (Fig. 1-31). To prevent problems of flue gas
condensate in the exhaust pipe Ø 80, due to flue
gas cooling through the wall, the length of the
pipe (not insulated) must be limited to just 5 m.
Example of installation with direct vertical
terminal in partially protected location. When
the vertical terminal for direct discharge of com-
bustion products is used, a minimum gap of 300
mm must be left between the terminal and the
balcony above. The height A + B (always with
respect to the balcony above), must be equal to
or greater than 2000 mm. (Fig. 1-13).
• Configuration without cover kit (boiler
type C).
By leaving the side plugs fitted, it is possible to
install the appliance externally, in partially co-
vered places, without the cover kit. Installation
takes place using the Ø 60/100 and Ø 80/125
concentric horizontal intake/ exhaust kits. Refer
to the paragraph relative to indoor installation.
In this configuration the top cover kit guarantees
additional protection for the boiler. It is recom-
mended but not compulsory.
Fig. 1-10