Summer Time; Calculation Of The Thermal Power - Nordica Focolare 70 Piano Instructions For Installation, Use And Maintenance Manual

Cast iron fireplaces
14.

SUMMER TIME

After having performed the cleaning of the hearth, of the stack and of the flue, removing completely the ash
and other possible residuals, close all doors of the hearth and the related registers.
It is suggested to perform the flue cleaning at least once a year; in the meantime, verify the actual state of
the door seals, which do not assure the good operation of the device, if they are not completely integral
(i.e. if they do not adhere anymore to the door)! Therefore, it is necessary to replace them.
In case of humidity of the room where the device is located, place the absorbing salts within the hearth.
Protect the internal cast iron parts with neutral Vaseline, if you wish to keep the aesthetic appearance
unchanged in time.
15.

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 40 kCal/h per m
Given that 1 kW corresponds to 860 kCal/h, it is possible to adopt a value of 50 W/m
Let's suppose one wishes to heat a room of 150 m
it is necessary to have 150 m
therefore sufficient. (see Table 3)
Fuel
Dry wood (15% humidity)
Wet wood (50% humidity)
Wood briquettes
Brown coal briquettes
Normal anthracite
Coke
Natural gas
Naphtha
Electricity
Instructions for installation, use and maintenance – EN – Rev.07
3
(10 x 6 x 2.5 m) in an insulated apartment. In this case,
3 3
x 50 W/m = 7500 W or 7.5 kW. As main heating, a 10 kW device is
Approximate combustion
Unit kCal
kg 3600
kg 1850
kg 4000
kg 4800
kg 7700
kg 6780
m3 7800
L 8500
kW/h
Table 3
3
(for an external temperature of 0 ° C).
value
kW
4.2
2.2
5.0
5.6
8.9
7.9
9.1
9.9
860 1.0
3
.
Required quantity in
relation to 1 kg of dry
wood
Fuel
1.00
1.95
0.84
0.75
0.47
0.53
0.46
0.42
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