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La Nordica America Manual

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AMERICA
7096101 - IT - EN - DE - FR 21
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 (Picture 9 at page 41) or from the top.
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 (SeePicture 8 at page 41). This is to aid furnace cleaning.
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 caloric value necessary for a properly insulated room is 30 kcal/h per m
3
(for
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
3
.
Let’s suppose one wishes to heat a room of 150 m
3
(10 x 6 x 2.5 m) in an insulated apartment. In this case, it is necessary to have 150 m
3
x 38 W/m
3
= 5700 W or 5,7 kW. As main heating, a 8 kW device is therefore sufcient.
Approximate combustion value Required quantity in relation to 1 kg of dry
wood
Fuel Unit kcal/h kW
Dry wood (15% humidity) kg 3600 4.2 1,00
Wet wood (50% humidity) kg 1850 2.2 1,95
Wood briquettes kg 4000 5.0 0,84
Brown coal briquettes kg 4800 5.6 0,75
Normal anthracite kg 7700 8.9 0,47
Coke kg 6780 7.9 0,53
Natural gas m
3
7800 9.1 0,46
Naphtha L 8500 9.9 0,42
Electricity kW/h 860 1.0 4,19
use cloths, abrasive or chemically aggressive products by cleaning the hearth glass.
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-ue 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 lls 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 re-resistant material equipped with an
air-tight cover. The container has to be placed on a re-resistant oor, far from ammable 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-ue 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 re in the ue.
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 ue (checking of possible deposits).
… 20 …


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