Immergas MYTHOS HP - Flue System Installation

17
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.11 IMMERGAS FLUE SYSTEMS
Immergas supplies various solutions separately from the boilers
regarding the installation of air intake terminals and ue exhaust,
which are fundamental for boiler operation.
e boiler must be installed with an original Immergas
“Green Range” inspectionable air intake system and vi-
sible ue gas extraction system made of plastic, with the
exception of the C6 conguration, as required by the re-
gulations in force and by the product’s approval. is
ue system can be identied by the specic identica-
tion mark bearing the following indication: “only for
condensation boilers”.
For non-original ue system, refer to the technical data
of the appliance.
e plastic pipes cannot be installed outdoors, for tracts
longer than 40 cm, without suitable protection from UV
rays and other atmospheric agents.
Resistance factors and equivalent lengths
Each ue component has a Resistance Factor based on experimen-
tal tests and specied in the table below.
e Resistance Factor for individual components is independent
from the type of boiler on which it is installed and has a dimen-
sionless size.
It is however, conditioned by the temperature of the uids that
pass through the pipe and therefore, varies according to applica-
tions for air intake or ue exhaust.
Each single component has a resistance corresponding to a cer-
tain length in metres of pipe of the same diameter; the so-called
equivalent length, can be obtained from the ratio between the re-
lative Resistance Factors.
All boilers have an experimentally obtainable maximum Resi-
stance Factor equal to 100.
e maximum Resistance Factor allowed corresponds to the resi-
stance encountered with the maximum allowed pipe length for
each type of Terminal Kit.
is information allows calculations to be made to verify the pos-
sibility of setting up various ue congurations.
To dimension the ue ducting using commercial com-
ponents, refer to the table of combustion parameters
(Par. 4.2).
A
B
10
Positioning the gaskets (black) for “green range” ue systems.
Position the gasket correctly (for bends and extensions) (Fig. 10):
- gasket (A) with notches, to use for bends;
- gasket (B) without notches, to use for extensions.
If necessary, to ease the push-tting, spread the elements with
commonly-used talc.
Extension pipes and concentric elbows push-ttings.
To install push-tting extensions with other elements of the ue,
proceed as follows:
- Install the concentric pipe or elbow with the male side (smooth)
on the female side (with lip seal) to the end stop on the previou-
sly installed element in order to ensure sealing eciency of the
coupling.
If the exhaust terminal and/or extension concentric pipe
needs shortening, consider that the internal duct must
always protrude by 5 mm with respect to the external
duct.
For safety purposes, do not obstruct the
boiler intake/exhaust terminal, even
temporarily.
e various parts of the ue system must
be checked to ensure that they have been
laid in such a way as to prevent the cou-
pled parts from detaching, in particular,
the ue exhaust duct in the Ø80 separa-
tor kit conguration. If the condition de-
scribed above is not adequately guaran-
teed, it will be necessary to use the
appropriate retaining clamp kit.