Calculation Of The Thermal Power - Nordica ITALY TERMO BUILT-IN-DSA Manuel Utilisateur

CLEANINg OF THE TERMOCOOkINg COLLECTION CAsINg WITH UNDER DOOR OVEN
The smokes collection casing can be cleaned either through the door which is under the oven
It will be necessary to carefully clean the exchange surfaces removing the movable part of the hob and scraping the exchange surfaces of the
furnace and the pipes which compose the tube bundle located above the oven, as well as the downward passage of the smoke on the right
side of the oven. Later clean the smoke passage under the oven. Cleaning can be made with a brush and a vacuum cleaner.
Pay ATTENTION that after cleaning all dismounted parts are reinstalled hermetically.
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.

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
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
Let's suppose one wishes to heat a room of 150 m
W/m = 5250 W or 5,25 kW. As main heating, a 8 kW device is therefore sufficient.
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 150 m
3
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
(Picture 9 ) or from the top.
.
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
3 (for an
x 35
3
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
37