Immergas Flue Systems - Immergas MINI EOLO 24 3 E Instructions And Warnings

1.11 Immergas flue systems.

Immergas supplies various solutions separately from the boilers
regarding the installation of air intake terminals and flue exhaust,
which are fundamental for boiler operation.
ATTENTION:
the boiler must only be installed togeth-
er with an original Immergas air intake
and flue gas exhaust system.
This flue can be identified by an identification
mark and special distinctive marking bearing
the note "not for condensing boilers".
The flue exhaust pipes must not be in contact
with or be near to flammable materials. More-
over, they must not pass through buildings or
walls made of flammable material.
See following paragraphs for the detailed description of the kits
available
• Positioning of double lip seals.
For correct positioning of lip seals on elbows and extensions,
follow the direction of assembly given in figure (Fig. 8).
• Resistance factors and equivalent lengths.
Each flue component has a Resistance Factor based on exper-
imental 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 and has a dimensionless size. It
is however, conditioned by the temperature of the fluids that pass
through the pipe and therefore, varies according to applications
for air intake or flue exhaust. Each single component has a resist-
ance corresponding to a certain length in metres of pipe of the
same diameter; the so-called equivalent length, can be obtained
from the ratio between the relative Resistance Factors.
All boilers have an experimentally obtainable maximum Re-
sistance 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 allows calcula-
tions to be made to verify the possibility of setting up various
flue configurations.
• Coupling of extension pipes. To install any push-fit extensions
with other flue extraction elements, it is necessary to do the fol-
lowing: install the concentric pipe or elbow with the male side
(smooth) on the female section (with lip seal) to the end stop
on the previously installed element. This will ensure the sealing
and joining of the elements correctly.
ATTENTION:
if the exhaust terminal and/or extension
concentric pipe needs shortening, consi-
der that the internal duct must always protrude
by 5 mm with respect to the external duct.
Diaphragm installation.
ATTENTION:
based on the boiler model (checking
which type of fan is installed), use ap-
propriate diaphragms.
For correct functioning of the boiler it is necessary to install a
diaphragm on the outlet of the sealed chamber and before the
intake and exhaust pipe. The appropriate diaphragm is chosen
based on type of pipe and its maximum extension: this calculation
can be made using the tables below:
N.B.: the diaphragms are supplied together with the boiler.
8
15