Connection To The Flue; Air For Combustion; External Air Intake; Ventilation Hood Or Adjacent Local - LA NORDICA INSERTO 70 Crystal Angolo DX Manuel Utilisateur

CONNECTION TO THE FLUE

The connection to the stack must be performed with stiff pipes in steel comply with all current Standards and Regulations and to those
envisioned by the Law.
It is FORBIDDEN to use metallic pipes or pipes in asbestos cement since they jeopardize the safety of the fitting
itself, considering that they are subject to tears or breaks resulting in leaks of smoke.
The exhaust pipe must be air-tight fastened to the stack and can have a maximum inclination of 45°; this to avoid excessive deposits
of condensate produced in the initial start-up phases and/or the excessive gripping 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.
For a better working of the appliance, it is suggested to have a flue draught of 12 Pa (=1.2 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 (butterfly valve).
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
Picture 7 pos. 1 Inserti).
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: 30 x 10 cm grating).
2
In this way, the following targets are achieved:
• a greater safety
• an increase of the heat created by air circulation around the device.
The heat vent grating
This must 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 (See chapter TECHNICAL DATA)
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
outside it must be endowed with a special windbreak.

VENTILATION HOOD OR ADJACENT LOCAL

On our products, it is possible to install OPTIONAL ventilation kits (NO Inserto 50 - NO Inserto 80 High Pressure) suitable to
improve the distribution of heat by ventilation only either of the installation room or of the adjacent local (see chapter OPTIONAL
VENTILATION KIT).
The product can distribute heated air by natural convection or forced convection by means of a centrifugal fan (OPTIONAL); therefore,
during installation, it is necessary to establish the type of ventilation or convection to be adopted.
The covering of each product is equipped with 2 outputs with a diameter of 150 mm (15 cm) for the connection of pipes resistant to
heat.
24
(Picture 7 pos. 6) has to be installed on the upper part of the hood at about 20 cm from the roof.
11, a maximum length of 4 m and with no more than 3 bends. If there is a direct connection with the
ENgLIsH