La Nordica MONOBLOCCO GHISA 750 Manual Del Usuario página 27

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.
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
air For combustion
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).
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: 30x10 cm grating).
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in this way, the following targets are achieved:
• a greater safety
• an increase of the heat created by air circulation around the device.
• a better working of the appliance
the heat vent grating
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.
Ventilation and aeration oF the installation premises
as thE product draw thEir combustion air from thE placE of installation, it is mandatory that in thE placE itsElf, a
sufficiEnt quantity of air is introducEd. if windows and doors arE airtight (E.g. built according to EnErgy saving critEria),
it is possiblE that thE frEsh air intakE is no longEr guarantEEd and this JEopardisEs thE draught of thE appliancE and your
hEalth and safEty.
important: for a better comfort and corresponding oxygenation of environment, the combustion air can be directly withdrawn at the
outside through a junction which is to be connected with a flexible pipe. the connection pipe (not furnished) must be flat with a minimum
Picture 15, a maximum length of 4 m and with no more than 3 bends. if there is a direct connection with the outside it must be
diameter of
endowed with a special windbreak.
thErE mandatory bE sufficiEnt quantity of air for combustion and rE-oxygEnation of thE room to EnsurE thE dEvicE will
work propErly. there should therefore be vents letting air in from outside the building and enabling circulation of air for combustion even
when the doors and windows are closed.
the air inlets must meet the following requirements:
• thEy must bE protEctEd with grids, mEtal mEsh, Etc., but without rEducing thE nEt usEful sEction;
• thEy must bE madE so as to makE thE maintEnancE opErations possiblE;
• positionEd so that thEy cannot bE obstructEd;
• any Extractor hoods in thE room whErE thE dEvicE is installEd must not opEratE at thE samE timE as this could cause
smoke to enter the room, even with the fireplace's door closed.
the clean and non-contaminated air flow can also be obtained from a room adjacent to that of installation (indirect aeration and ventilation),
as long as the flow takes place freely through permanent openings communicating with the outside.
thE adJacEnt room cannot bE usEd as a garagE, or to storE combustiblE matErial or for any othEr activity with a firE
haZard, bathroom, bEdroom or common room of thE building.
ventilation is deemed sufficient when the room is equipped with air inlets according to the table:
appliance categories
fireplaces
stoves
cookers
installation in prEmisEs with firE haZards is forbiddEn. installation in rEsidEntial prEmisEs in which, in any
casE, thE dEprEssion mEasurEd during installation bEtwEEn thE intErnal and ExtErnal EnvironmEnt is grEatEr
than 4 pa - rEfErEncE for italy according to standard uni10683.
all national, rEgional, provincial and municipal laws and standards in forcE in thE country whErE thE appliancE is
installEd must bE compliEd with.
Picture 7
pos. 1).
(Picture 7 Picture 14) has to be installed on the upper part of the hood at about 20 cm from the
pos. 6 -
reference standard net opening section with respect to
uni En 13229
uni En 13240
uni En 12815
percentage of the
the appliance fumes outlet section
50%
50%
50%
ENGLISH
minimum net opening value of
the ventilation duct
200 cm²
100 cm²
100 cm²
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