External Air Intake - Nordica INSERTO 80 Anweisungen

The depression to the stack should be 10 - 12 Pa (1 – 1.2 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.
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 Figure 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
30 x 10 cm grating).
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 (Figure 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.
•
The air intake must be positioned so that it cannot be obstructed.
•
Be communicating with the installation room of the appliance and be protected by grating.
•
Minimum surface must not be lower than 100 cm
•
Should the inflow of air be obtained by openings communicating with outside of nearby
rooms, it is necessary to avoid air intakes in connection with garages, kitchens, bathrooms,
thermal units (see Figure 14).
•
If in the local of installation there are inspiration hoods, these can not work at the same time,
as the contemporary use of them could cause the smoke exit in the room, even if the door is
closed.
26
2
(example:
Rear and side min. 6 cm
2
.
Instructions for installation, use and maintenance Rev.01 - 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
Figure 13
INSERTO 50 – 80 – 100