La Nordica Inserto 70 Ventilato H49 [19/78] Ventilation hood or adjacent local

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 (buttery valve).

IMPORTANT: When using metallic pipes, they must be insulated with proper materials (coatings in insulating bers 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 replace, it is necessary to close the upper internal part of the stack using (properly pre-

drilled) sheet metal or any other kind of re-resistant material that can support very high temperatures without suffering any damage. (see

Picture 7 pos. 1 Inserti).

5.3. AIR FOR COMBUSTION

It is necessary to ventilate continuously the space included between the upper part, the sides of the device and the deector of the re-

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 (Picture 7 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) ow out into the room.

5.4. ExTERNAL AIR INTAKE

There MANDATORY be sufcient 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.

Our products are equipped with tangential fans suitable to improve the distribution of heat through the ventilation exclusively of the

installation room (see chapter SERIES VENTILATION).

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 120 mm (12 cm) for the connection of pipes resistant to heat.

a) Perform the drilling on the walls or on the existing hood to allow the passage and the application of the (re-resistant) hoses with

related openings.

b) Fasten the pipes by means of clamps to the related collars and openings, after having removed the semi-blanks caps (see

output (see Picture 10).

f) If the space between the upper part of the insert and the lower prole of the hood is lower than 10 cm, it is necessary to perform a

hole of about 30 x 40 cm on the hood to allow the fastening of the hoses;

g) 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 ow and the accessibility

for future maintenance.

INSERTI IN GHISA 60 - 70 - 70H49

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