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INSERTO 60 – 70 – 70 To – 70 Pr – 70 H49
c) Each pipe must not exceed 1.5 m of length for natural ventilation and 4 m for forced ventilation; it must be
insulated with insulating materials to avoid noise and dispersion of heat.
d) The openings must be positioned at a height not lower than 2 m from the floor to avoid that hot air at output meets
people.
e) If the space between the upper part of the insert and the lower profile of the hood is lower than 10 cm, it is
necessary to perform a hole of about 30 x 40 cm on the hood to allow the fastening of the hoses (see Picture 11 –
Picture 12).
f) The OPTIONAL ventilation kit has to be installed below the appliance in the rear part (see instructions in chapter
20). As consequence you should arrange a underlying space to collocate it, allowing a proper air flow and the
accessibility for future maintenance.
7.
CONNECTION TO THE FLUE / AIR FOR COMBUSTION (air intake)
The connection to the stack must be performed with stiff pipes in aluminized steel with a minimum thickness of 2 mm
or in 316 stainless steel with a minimum thickness of 1 mm.
It is forbidden to use metallic pipes or pipes in asbestos cement since they jeopardize the safety of the fitting
itself, considering that they are subject to tears or breaks resulting in leaks of smoke.
The exhaust pipe must be air-tight fastened to the stack and can have a maximum inclination of 45° ; th is to avoid
excessive deposits of condensate produced in the initial start-up phases and/or the excessive gripping of soot and
moreover it avoids the slowing down of the smokes at output.
The failed tightness of the connection can cause the malfunction of the appliance.
The internal diameter of the connection pipe must be equal to the external diameter of the smokes stub pipe of the
appliance. This is assured by pipes complying with DIN 1298.
The depression to the stack should be 11 - 14 Pa (1.1 – 1.4 mm of column of water).
The measurement has always to be carried out with hot appliance (rated thermal performance).
When the depression exceeds 17 Pa (1.7 mm of column of water), it is necessary to reduce the same by installing an
additional draught regulator (butterfly valve) on the exhaust pipe or in the chimney.
IMPORTANT
: When metallic pipes are used, these pipes must be insulated with suitable materials (coatings
in insulating fiber resistant) in order to avoid tears of
walls or of the counter-hood.
Before positioning the insert in the pre-existing fireplace, it is
necessary to close the upper internal part of the stack using
(properly pre-drilled) sheet metal or any other kind of fire-resistant
material that can support very high temperatures without suffering
any damage. (see Picture 13)
It is necessary that the space included between the upper part, the
sides of the appliance and the deflector of fire-proofing material of
the hood (obstructing the base of the flue), is constantly ventilated.
For this reason, it is necessary to foresee an intake of air from the
bottom (intake of fresh air) and a high output (output of hot air).
Each of these openings must be free and it should not be possible
to obstruct it; moreover, they must have a minimum surface of at
least 3 dm
(example: 30 x 10 cm grating).
2
In this way, the following targets are achieved:
•
a greater safety
•
an increase of the heat created by the air circulation around
the appliance.
The heat vent grating (Picture 14 pos. 6) has to be installed on the
upper part of the hood at about 20 cm from the roof. This must
always be installed since its function is that of letting the heat
collected within the hood (overpressure) flow out into the room.
8.
EXTERNAL AIR INTAKE
For a good operation of the appliance, it is essential that a sufficient quantity of air for the combustion and the re-
oxygenation of the room is introduced the installation room itself. This means that, through proper openings
communicating with outside, the air for combustion must circulate also with closed doors and windows.
6090710 R – EN
(1) Closure of the existing duct with sheet
metal, bricks, mineral wool panels or fire
resistant materials.
(2 Grating
(3) Connection
duct
(4) duct
(5) Air intake grating
INSERTO 60 min.: rear 6cm and side 8cm
INSERTO 70 min.: rear 6cm and side 6cm
Picture 13
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21
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