Air For Combustion; External Air Intake; Ventilation Hood Or Adjacent Local - LA NORDICA Focolare 60 Piano 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 (Picture 7
always be installed since its function is that of letting the heat collected within the hood (overpressure) flow out into the room.

ExTERNAL AIR INTAKE

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 intake must be in a position where it cannot be obstructed.
• The air intake should communicate with the room in which the device is installed and be protected with a grille.
• Vents may communicate with adjacent rooms but NOT with garages, kitchens, bathrooms or boiler rooms (FORBIDDEN).
• 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.
Minimum dimensions (Picture
A – natural convection:
B – forced convection:
* (For a better comfort and corresponding oxygenation of environment, the combustion air can be directly withdrawn at the outside
through a junction (B1) which is to be connected with a flexible pipe (not furnished)for the external air intake. The connection pipe
must be flat with a minimum diameter of (B1
connection with the outside it must be endowed with a special windbreak.)

VENTILATION HOOD OR ADJACENT LOCAL

In order to distribute the heating in the environment or carry it to an adjacent room it is possible to install a galvanized steel covering
(OPTIONAL) on the external cast-iron body of the same appliance.
The covering is provided with 4 outlets with a 150 mm diameter to connect the heat resistant pipes. This covering is fixed to the
fireplace through special screws:
a) Perform the drilling on the walls or on the existing hood to allow the passage and the application of the (fire-resistant) hoses
with a 15 cm diameter equipped with related openings.
b) Fasten the pipes by means of clamps to the related collars and openings, (see
c) Each pipe must not exceed 2m of length for natural ventilation and 4m for forced ventilation; it must be insulated with insulating
materials to avoid noise and dispersion of heat.
d) The openings have to be positioned at a height not lower than 2 m from the floor to avoid that hot air at output meets people.
Please respect the distance of the convection openings according to the local construction norms;
e) The lengths of the canalization pipes must have the same length to avoid the distribution of differing quantities of air from each
output. (see Picture
f) The OPTIONAL ventilation kit has to be installed below the appliance in the rear part (see instructions in chapter OPTIONAL
kit ventilation). As consequence you should arrange a underlying space to collocate it, allowing a proper air flow and the
accessibility for future maintenance.
24
Top: Minimum opening 1000 cm
Base: Minimum opening 750 cm
pos. 6) has to be installed on the upper part of the hood at about 20 cm from the roof. This must
12):
300 cm
2
150 cm external air intake for the stack, if present (*B1);
2
150 cm external air intake for the fan, if present (B2);
2
150 cm internal air intake for the fan, if present (C);
2
Picture 12), a maximum length of 4 m and with no more than 3 bends. If there is a direct
11).
Picture 7 - Picture 10 represent the minimum requirements:
2
2
Picture
ENgLIsH
11).