Immergas 3.020928, Instruction And Recommendation Booklet

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rect installation between pipe and wall, then fix
the closing cap (6) on the terminal (7). Join the
exhaust pipe (10) with the male side (smooth)
in the female side of the bend (11) to the end
stop, ensuring that the wall sealing plate (8) is
already inserted for correct installation between
the pipe and flue.
• Coupling of extension pipes and elbows.
To install any push-fit extensions with other
flue extraction elements, it is necessary to
do the following: 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.
• Insulation of separator terminal kit. Whenever
there are flue gas condensate problems in the
exhaust pipes or on the external surface of the
intake pipes, on request Immergas supplies
insulated intake-exhaust pipes. Insulation
my be necessary on the exhaust pipe, due to
excessive loss of temperature of the flue gas on
their route. Insulation may be necessary on
the intake pipe as the air entering (if very cold)
may cause the outside of the pipe to fall below
the dew point of the environmental air. The
figures (Fig. 1-27 and 1-28) illustrate different
applications of insulated pipes.
Insulated pipes are formed of a Ø 80 internal
concentric pipe and a Ø 125 external pipe with
static air space. It is not technically possible to
start with both Ø 80 elbows insulated, as clear-
ances will not allow it. However starting with an
insulated elbow is possible by choosing either
the intake or exhaust pipe. When starting with
the insulated intake bend it must be engaged on
its flange until it is taken up to end stop on the
flue gas exhaust flange, a situation that takes the
two intake flue gas exhaust outlets to the same
height.
• Temperature loss in insulated flue ducting. To
prevent problems of flue gas condensate in the
insulated exhaust pipe Ø 80, due to flue gas
cooling through the wall, the length of the pipe
must be limited to 12 metres.
The figure (Fig.
1-28) illustrates a typical insulation applica-
tion in which the intake pipe is short and the
exhaust pipe is very long (over 5 m). The entire
intake pipe is insulated to prevent moist air in
the place where the boiler is installed, in contact
with the pipe cooled by air entering from the
outside. The entire exhaust pipe, except the
elbow leaving the splitter is insulated to reduce
heat loss from the pipe, thus preventing the
formation of fume condensate.
N.B.: when installing the insulated pipes, a
section clamp with gusset must be installed
every 2 metres.
• Configuration type B, open chamber and fan
assisted.
The appliance can be installed inside buildings
in B mode; in this case, all technical rules, 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 fines, cement, etc.), which may be harm-
ful for the components of the appliance and
jeopardise operation.
- in configuration type B, the boilers must not be
installed in bedrooms, bathrooms or in bedsits.
- The installation of appliances in configuration
B is only recommended outdoors (in a partially
protected place) or in places that are not lived
in and which are permanently ventilated.
MAX 12 m MAX 21 m
The kit includes:
N°1 - Exhaust gasket (1)
N°1 - Flange gasket (2)
N°1 - Female intake flange (3)
N°1 - Female exhaust flange (4)
N°1 - Bend 90° Ø 80 (5)
N°1 - Pipe closure cap (6)
N°1 - Intake terminal Ø 80 insulated (7)
N°2 - Internal rings (8)
N°1 - External wall sealing plate (9)
N°1 - Discharge pipe Ø 80 insulated (10)
N°1 - Concentric bend 90° Ø 80/125 (11)