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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 deposit 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 device.
The internal diameter of the connection pipe must be equal to the external diameter of the smokes stub pipe of the
device. This is assured by the pipes complying with DIN 1298.
The depression in the stack should be - 13 Pa (1.3 mm of column of
water).
The measurement has always to be carried out with hot device (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.
IMPORTANT
: When using metallic pipes, they must be insulated with
proper materials (coatings in insulating fibers resistant up to 600° C) in order
to avoid deterioration of walls or of the counter-hood.
It is necessary to ventilate continuously the space included between the
upper part, the sides of the device and the deflector of the fire-proofing
material of the hood.
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).
The spaces foreseen for the circulation of air indicated in Picture 14 represent
the minimum requirements:
Top:
Minimum opening 800 cm
Base:
Minimum opening 600 cm
In this way, the following targets are achieved:
•
a greater safety
•
an increase of the heat created by air circulation around the device.
Caution it is suggested to produce the counter-hood in fire-resistant plaster board with metallic self-bearing frame, in
order not to let it weight on the aesthetic coating (marble).
The heat vent grating (Picture 16 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.
7.1.
EXTERNAL AIR INTAKE
For a good operation of the device, 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.
•
The air intake must be positioned so that it cannot be
obstructed.
•
Be communicating with the installation room of the
device and be protected by grating.
•
Should the air inflow be obtained by means of openings
communicating with the outside of the adjacent rooms, it
is necessary to avoid air intakes in connection with
garages, kitchens, bath-rooms, thermal units.
Minimum dimensions:
A – natural convection:
B – forced convection:
150 cm
150 cm
150 cm
24
2
2
2
300 cm
(see Picture 15)
2
external air intake for the stack;
2
external air intake for the fan;
2
internal air intake for the fan
Monoblocco Ghisa 750
1000 cm
800
600
750 cm
5
10 cm min post. e laterale Mod 6
Rear and side Min. 6 cm
Picture 14
Picture 15
6099751 Rev.04 – EN
2
2
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