Cleaning Of The Hearth Grate; Cast Iron Cooking Plate And Rings; Maintenance On The Water System; Calculation Of The Thermal Power - La Nordica TERMOCUCINOTTA EVO Manual Del Usuario

CLEANINg OF THE HEARTH gRATE

IMPORTANT: if for whatever reason the grill is removed from the furnace, take care to reassemble it with the wider part of the slit facing
downwards (See Picture 8). This is to aid furnace cleaning.

CAsT IRON COOkINg PLATE AND RINgs

IMPORTANT: to avoid rust DO NOT forget pots or pans on the cold cooking plate. This would create rust rings, unpleasant to see
and difficult to remove.
The cast iron cooking plate and the cast iron rings needs to be periodically cleaned by using sandpaper (grain 150) without
touching the enamelled parts..
To carry out the cleaning operation remove the smoke outlet spigot and the smoke pipe. The smoke compartment can be cleaned from the
front side of the oven (see chap. CLEANING SMOKE COMPARTMENT COOKERS) or from the top. In this case remove the cast iron rings and the
cooking plate, as well the smoke outlet spigot and the smoke pipe. The cleaning can be carried out by using a brush and a hoover.
(Where existing STANLESS STEEL frame) Once you have placed the cast iron cooking plate, make sure to have always 3 mm in-between the
cooking plate and the STAINLESS STEEL frame. This gap is important because of the thermal expansions and to avoid chromatic changes
of the STAINLESS STEEL frame when hot.
ATTENTION: once the cleaning operations are terminated all the parts have to be re-assembled 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
.
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
(for an
3
x 35
3
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
35