Maintenance On The Water System; Maintenance Of The Oven (Where Existing); Calculation Of The Thermal Power - LA NORDICA TERMOROSSELLA PLUS DSA Manuel Utilisateur

MAINTENANCE ON THE WATER SYSTEM

Excessive incrustation deposits on the inner walls of the hearth considerably reduce the efficiency of heat exchange;
therefore, remove these deposits using a steel brush whenever necessary. Never use corrosive substances that can
damage the thermo-fireplace and the boiler.
With the system switched off, once a year carry out the following checks:
• Check the operation and efficiency of the blowdown and safety valves. If they are defective, contact your authorised installer.
IT IS STRICTLY FORBIDDEN TO REMOVE OR TAMPER WITH THE SAFETY DEVICES.
• Check the thermal insulation of the filling pipe and the safety pipe.
• Make sure that the system is filled and under pressure, checking the water level in the expansion tank; also check that it is
working properly and check the efficiency of the safety pipe.

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.

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.
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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
.
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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
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
35