Air Flow In The Place Of Installation During Combustion; Important; Allowed / Not Allowed Fuels - Nordica ZEN Instructions Pour L'installation, L'utilisation Et L'entretien

7. AIR FLOW IN THE PLACE OF INSTALLATION DURING COMBUSTION

As the thermo-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. It is therefore necessary to guarantee
a supply of fresh air through an external air inlet placed near the appliance or by placing piping for combustion air which leads outside or
to a nearby airy place, with the exception of the boiler room or garage (FORBIDDEN).
IMPORTANT: For a better comfort and corresponding oxygenation of environment, the stove / insert combustion air can be directly
withdrawn at the outside. In order to do that, the stove can be connected to the external air socket by an junction (Chap. TECHNICAL
DATA SHEET).
The connection pipe must be smooth with a minimum diameter of 100 . It must have a maximum length of 4 m and have no more than
three bends. If it is directly connected to the outside, it must be equipped with a suitable windbreak.
The intake of air for combustion in the place of installation must not be obstructed during operation of the thermo-product. It is absolutely
essential that in environments in which thermo-products are operated with a natural chimney draught, as much air as is necessary for
combustion is introduced, i.e. up to 20 m³/hour. The natural recirculation of air must be guaranteed by some fixed openings to the outside.
Their size is established by regulations regarding the subject. Ask for information from a chimneys weep. The openings must be protected
with grills and must never be blocked up. An extractor hood (suction) installed in the same room or in a neighbouring one causes a
depression in the environment. This causes the leakage of burnt gas (dense smoke, smell); it is therefore necessary to ensure a greater
flow of fresh air.
The depression of an extractor hood can, in the worst case scenario, transform the flue of the thermo-product into an external
air inlet, re sucking the flue gases into the environment with very serious consequences for persons.

8. ALLOWED / NOT ALLOWED FUELS

Allowed fuels are logs. Use exclusively dry logs (max. content of water 20%). Maximum 3 logs should be loaded. The pieces of wood
should have a length of ca. 20-30 cm and a maximum circumference of 30-35 cm.
Compressed not worked-out wood briquettes must be used carefully to avoid overheating that may damage the device, since
these have a very high calorific value.
The wood used as fuel must have a humidity content lower than the 20% and must be stored in a dry place. Humid wood tends to burn
less easily, since it is necessary a greater quantity of energy to let the existing water evaporate. Moreover, humid content involves
the disadvantage that, when temperature decreases, the water condensates earlier in the hearth and therefore in the stack causing a
remarkable deposit of soot with following possible risk of fire of the same.
Fresh wood contains about 60% of H
It is necessary to place this wood in a dry and ventilated place (for example under a roofing) for at least two years before using it.
Besides others, it is not possible to burn: carbon, cuttings, waste of bark and panels, humid wood or wood treated with paints,
plastic materials; in this case, the warranty on the device becomes void.
Paper and cardboard must be used only to light the fire.
The combustion of waste is FORBIDDEN and would even damage the appliance and the flue, causing health damages and claims by
the neighborhood owing to the bad smell. The wood is not a fuel which allows a continuous operation of the appliance, as consequence
the heating all over the night is not possible.
Variety
Beech
Oak
Elm
Poplar
Larch*
Spruce*
Scots pine *
ATTENTION : the continuous and protracted use of aromatic wood (eucalyptus, myrtle etc.) quickly damages the cast iron parts
(cleavage) of the product.
18
O, therefore it is not suitable to be burnt.
2
Kg/mc
750
900
640
470
660
450
550
*
RESINOUS WOOD NOT SUITABLE FOR THE BURNING
kWh/kg 20%
moistness
4,0
4,2
4,1
4,1
4,4
4,5
4,4
7196011 - IT - EN - DE - FR
ZEN