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draught of the chimney-flue and the presence of combustion air are the essential elements for the optimal functioning of the appliance and
for the cleaning of the glass.
BREAK OF GLASSES: Given that the glass-ceramic glasses resist up to a heat shock of 750°C, they are not subject to thermal
shocks. Their break can be caused only by mechanic shocks (bumps or violent closure of the door, etc.). Therefore, their
replacement is not included in the warranty.
12.8. CLEANING OUT THE ASHES
All the devices are equipped with a hearth grating and an ash drawer for the collection of the ashes
It is suggested to empty periodically the ash drawer and to avoid it fills completely in order not to overheat the grating. Moreover, it is
suggested to leave always 3-4 cm of ash in the hearth.
CAUTION: The ashes removed from the hearth have to be stored in a container made of fire-resistant material equipped with an
air-tight cover. The container has to be placed on a fire-resistant floor, far from flammable materials up to the switching off
and complete cooling.
12.9. CLEANING THE FLUE
The correct lighting phase, the use of proper quantities and types of fuels, the correct position of the secondary air regulator, enough
draught of the chimney-flue and the presence of combustion air are the essential elements for the optimal functioning of the appliance.
The device should be completely cleaned at least once a year or every time it is needed (in case of bad working and low yield). An
excessive deposit of soot can cause problems in the discharge of smokes and fire in the flue.
The cleaning must be carried out exclusively with cold equipment. This operation should be carried out by a chimney sweeper who
can simultaneously perform an audit of the flue (checking of possible deposits).
12.10. CLEANING OF THE COLLECTION CASING COOKING with under door oven
The smokes collection casing can be cleaned either through the door which is under the oven
To this purpose remove the circles of the cooking plate and disassemble the smokes pipe from the exhaust small trunk. Cleaning can be
made with a brush and a vacuum cleaner.
Pay ATTENTION that after cleaning all dismounted parts are reinstalled hermetically.
12.11. LATERAL HANDRAIL
The handles, the handrail and the tank water (cookers) should be cleaned to cold with a soft cloth and alcohol . DO NOT use abrasives
or solvents.
12.12. 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 at page
13. 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
an external temperature of 0°C).
Given that 1 kW corresponds to 860 kcal/h, it is possible to adopt a value of 38 W/m
Let's suppose one wishes to heat a room of 150 m
x 38 W/m
= 5700 W or 5,7 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
22
42). This is to aid furnace cleaning.
(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
Picture 8 at page
(Picture 9 at page
.
3
Required quantity in relation to 1 kg of dry
kW
4.2
2.2
5.0
5.6
8.9
7.9
9.1
9.9
1.0
SOVRANA
42.
42) or from the top.
(for
3
wood
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
1094005 - IT - EN - DE - FR
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