Air For Combustion; Ventilation And Aeration Of The Installation Premises - LA NORDICA Focolare 80 Bifacciale Hybrid Manuel Utilisateur

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). The
spaces foreseen for the circulation of air indicated in
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
always be installed since its function is that of letting the heat collected within the hood (overpressure) flow out into the room.
ATTENTION: We recommend making the counterplate in fire-retardant plasterboard with self-supporting metal frame, so that its
weight does not bear on the aesthetic covering (marble). We recommend providing an inspection door on the counter plate or
elsewhere as suitable to provide easy accessibility and visibility of the safety devices (pressure gauges, valves,..).

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IMPORTANT: For a better comfort and corresponding oxygenation of environment, the combustion air can be directly withdrawn at the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
diameter of Picture 14, 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
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.
23
Picture 7
Top:
Minimum opening 1000 cm
Base: Minimum opening 750 cm
(Picture 7 pos. 6) has to be installed on the upper part of the hood at about 20 cm from the roof. This must
Reference standard
UNI EN 13229
UNI EN 13240
UNI EN 12815
- Picture 11 represent the minimum requirements:
2
2
Percentage of the
net opening section with respect to
the appliance fumes outlet section
50%
50%
50%
ENgLIsH
Minimum net opening value of
the ventilation duct
200 cm²
100 cm²
100 cm²