Chromium-Components (If Present); Cast Iron Rings (If Present); Maintenance Of The Oven (Where Existing); Maintenance Of The Extensible Guides - Nordica STEFANY FORNO BII Manuel Utilisateur

CHROMIUM-COMPONENTS (If present)

If the components become bluish due to overheating, this can be solved with a suitable product for cleaning. DO NOT use abrasives
or solvents.

CAST IRON RINGS (If present)

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.

MAINTENANCE OF THE OVEN (where existing)

To avoid the possible forming of rust it is recommended:
- To let the steam getting out of the oven to reduce the formation of any condensation by opening the door briefly and carefully (1
or 2 times, or more often in case of cooking food very humid and with longer cooking times);
- Remove the food from the oven once cooked. Letting the food to chill in the oven at a temperature below 150 °C results in the
forming of condensation;
- After cooking, leave the oven door partially open to dry out any condensation;
- In case humidity formed inside the oven, we suggest you to treat with neutral vaseline the inside part of the cast iron door (where
existing).
- Repeat the treatment with the neutral vaseline on the inside part of the cast iron door every 3-6 months, depending of the
frequency of the use of the oven;
- In case of presence of rust on the inside part of the cast iron door, remove the rust by using abrasive material and then treat the
cast iron surface with neutral vaseline.
In order to ensure the quality of the foods that are cooked in the oven, the internal parts of the cast iron doors have NOt been treated
with any product.

MAINTENANCE OF THE EXTENSIBLE GUIDES

By using the device continuously, the lubricant of the guides tends to run out progressively in time making their sliding more difficult
and noisy. For this reason, together with each device a high temperature grease is supplied in order to make the lubrication of the
guides possible for the user, in case it becomes necessary (excessive noise or reduction of smoothness, see
CAUTION: use exclusively the grease supplied by La NORDICA.

CLEANING OF THE HEARTH GRATE

The use of not suitable fuel, as for example wood with sand, prevents the correct sliding of the cast-iron grate and can lead it to the
complete blockage. In this case you should arrange for a removal of the dirty sediments from the surfaces of the grate and its holder
Picture 8 .

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 (for an external temperature of 0°C).
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Given that 1 kW corresponds to 860 kcal/h, it is possible to adopt a value of 35 W/m
Let's suppose one wishes to heat a room of 150 m
150 m x 35 W/m = 5250 W or 5,25 kW. As main heating, a 8 kW device is therefore sufficient.
3 3
Fuel
Dry wood (15% humidity)
Wet wood (50% humidity)
Wood briquettes
Brown coal briquettes
Normal anthracite
Coke
Natural gas
Naphtha
Electricity
(10 x 6 x 2.5 m) in an insulated apartment. In this case, it is necessary to have
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Approximate combustion value
Unit kcal/h
kg 3600
kg 1850
kg 4000
kg 4800
kg 7700
kg 6780
m 7800
3
L 8500
kW/h 860
ENgLIsH
.
3
Required quantity in relation to 1 kg of
dry wood
kW
4.2
2.2
5.0
5.6
8.9
7.9
9.1
9.9
1.0
Picture 9).
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
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