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INSTALLATORUSERTECHNICIAN
1.7 IMMERGAS FLUE SYSTEMS.
Immergas supplies various solutions separately
from the boiler regarding the installation of air
intake terminals and ue extraction, which are
fundamental for boiler operation.
Important: e boiler must only be installed
together with an original Immergas air intake
and fume extraction system. is system can be
identied by an identication mark and special
distinctive marking bearing the note: “not for
condensing boilers”.
e ue exhaust pipes must not be in contact with
or be near to ammable materials. Moreover,
they must not pass through buildings or walls
made of ammable material.
Positioning of double lip seals. For correct
positioning of lip seals on elbows and extensions,
follow the direction of assembly given in gure
(Fig. 1-7).
• Resistance factors and equivalent lengths.
Each ue extraction system component has a
Resistance Factor based on experimental tests
and specied in the table below. e resistance
factor for individual components does not
depend either on the type of boiler on which
it is installed or the actual dimensions. It is,
however, conditioned by the temperature of the
uids that pass through the pipe and therefore
varies according to applications for air intake
or ue 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 he relative Resistance Factors.
All boilers have an experimentally obtainable
maximum Resistance Factor equal to 100.e
maximum Resistance Factor allowed corre-
sponds 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 congurations of ue
extraction systems.
1.8 OUTDOOR INSTALLATION IN
PARTIALLY PROTECTED AREA.
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...).
• Conguration with cover kit and direct air
intake (boiler type C).
Using the relevant cover kit, direct air intake is
possible and fumes are exhausted into a single
ue or directly to the outside (Fig. 1-8).
Diaphragm installation. For correct functioning
of the boiler congured with direct air intake, it
is necessary to install a diaphragm on the outlet
of the sealed chamber and before the diaphragm
exhaust pipe Ø 38 (Fig. 1-14).
• Cover kit assembly (Fig. 1-9). Remove the
two plugs and the gaskets present from the two
lateral holes with respect to the central one.
Install the Ø 80 outlet ange 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,
xing 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 ange 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
aps. 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 tted; this will ensure hold and
joining of the elements making up the kit.
• Coupling of extension pipes. To install snap-t
extensions with other elements of the fume
extraction elements assembly, proceed as fol-
lows: Couple the pipe or elbow with the male
side (smooth) on the female side (with lip seal)
to the end stop on the previously installed
element. is will ensure sealing eciency of
the coupling.
Max. length of exhaust ue. e ue pipe (verti-
cal or horizontal) can be extended to a max. length
of 12 m straight route, using insulated pipes (Fig.
1-31). To prevent problems of fume condensate
in the exhaust pipe Ø 80, due to fume cooling
through the wall, the length of the pipe (not insu-
lated) 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
combustion fumes is used, a minimum gap of
300 mm must be le between the terminal and
the balcony above. e height A + B (always with
respect to the balcony above), must be equal to
or less than 2000 mm (Fig. 1-11).
• Conguration without cover kit (boiler type
C).
By leaving the side plugs tted, it is possible to
install the appliance externally, in partially co-
vered places, without the cover kit. Installation
takes place using the Ø60/100 and Ø80/125
concentric horizontal intake/ exhaust kits. Refer
to the paragraph relative to indoor installation. In
this conguration the upper cover kit guarantees
additional protection for the boiler. It is recom-
mended but not compulsory.
1.9 OUTDOOR INSTALLATION USING
RECESSED FRAME WITH DIRECT
AIR INTAKE.
For this conguration, use the appropriate spa-
cers (included in the attachment kit) and place
them under the side plugs of the sealed chamber.
Air intake takes place directly from the external
environment (the recessed frame is thus venti-
lated) and ue exhaust in the ue or outdoors.
eboilerinthisconguration,followingmounting
instructions stated below, is classed as type C.
In this conguration, the ue exhaust must be
connected to its own individual ue or chan-
nelled directly into the external atmosphere.
The technical regulations in force must be
respected.
Max. length of exhaust ue. e exhaust duct
(vertical or horizontal) can be extended to a max.
of 5 straight metres in order to prevent problems
of fume condensation owing to their cooling
through the wall.
Diaphragm installation. For correct functioning
of the boiler, referring to installation with direct
air intake (type C if outdoors, type B22 if indo-
ors), a diaphragm must be installed on the outlet
of the sealed chamber and before the diaphragm
exhaust pipe Ø 38.
N.B.: the diaphragm is supplied together with
the boiler (Fig. 1-14).
• Spacer installation. For installation with direct
air intake, type C is used outdoors, type B22
is used indoors. e 4 spacers (available as
optional inside the attachment kit) should be
inserted between the boiler and the two plugs
of the sealed chamber so that air can reach the
boiler directly from the place of installation
(Fig. 1-12 and 1-13).
• Coupling of extension pipes. To install
snap-t extensions with other elements of the
fume 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. is will ensure sealing eciency of
the coupling.
