VIOLETTA X / GIULIETTA X / ISETTA EVO / ISOTTA EVO / VIOLA EVO / ISOTTA FORNO
24
12.9. CAST IRON RINGS
The cast iron rings needs to be periodically cleaned by using sandpaper (grain 150)
without touching the enamelled parts
.
.
IMPORTANT: to avoid rust DO NOT forget
pots or pans on the cold stove. This would create rust rings, unpleasant to see and difficult
to remove.
13. CALCULATION OF THE THERMAL POWER
There is not an absolute rule for calculating the correct necessary power. This power is given according to the space to be heated, but it
depends also largely on the insulation. On an average, the calorific value necessary for a properly insulated room is
30 kcal/h per m
3
(for
an external temperature of 0°C).
Given that
1 kW corresponds to 860 kcal/h
, it is possible to adopt a value of
35 W/m
3
.
Let’s suppose one wishes to heat a room of 150 m
3
(10 x 6 x 2.5 m) in an insulated apartment. In this case, it is necessary to have 150 m
3
x 35 W/m
3
= 5250 W or 5,25 kW. As main heating, a 8 kW device is therefore sufficient.
Approximate combustion value
Required quantity in relation to 1 kg of dry
wood
Fuel
Unit
kcal/h
kW
Dry wood (15% humidity)
kg
3600
4.2
1,00
Wet wood (50% humidity)
kg
1850
2.2
1,95
Wood briquettes
kg
4000
5.0
0,84
Brown coal briquettes
kg
4800
5.6
0,75
Normal anthracite
kg
7700
8.9
0,47
Coke
kg
6780
7.9
0,53
Natural gas
m
3
7800
9.1
0,46
Naphtha
L
8500
9.9
0,42
Electricity
kW/h
860
1.0
4,19
14. GUARANTEE TERMS
GUARANTEE TERMS
1.
La Nordica S.p.A. products are guaranteed, within the European community, for 24 months from the date of purchase.
Purchase has to be proved by means of a valid fiscal document issued by the seller (receipt, invoice or shipment document) identifying the
purchased product and its purchase and/or delivery date.
WARNING: This conventional guarantee does not replace the guarantee regulated by the European legislation on consumer
rights.
The conventional guarantee is only applicable to the Italian region and to those areas, within the European Community, where the
Authorised Technical Assistance Centres are active (see the www.lanordica-extraflame.com website)
It is also limited to the state of residence of the consumer, which must coincide with the premises and/or registered office of the seller of
the La Nordica S.p.A. product
These regulations do not apply if the product is purchased within commercial, entrepreneurial, or professional circumstances. In these
cases the product guarantee will be limited to a period of 12 months from the date of purchase.
ITALIAN GUARANTEE
What must be done if there is a product malfunction:
Consult the instructions manual to make sure the malfunction cannot be solved by using the product correctly. Make sure the malfunction
is included in those covered by the guarantee; otherwise the cost of the intervention will be borne entirely by the consumer. When
requesting the intervention of the Assistance service at the Authorised Assistance Centre, always specify: - type of malfunction - model of
the appliance - complete address - phone number
