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La Nordica MARIAROSA Manual

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ENGLISH
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 RADIANTPLATE AND RINGS
IMPORTANT: to avoid rust DO NOT forget pots or pans on the cold Radiant-plate. This would create rust rings, unpleasant to see
and dicult to remove.
The cast iron Radiant-plate and the cast iron rings needs to be periodically cleaned by using sandpaper (grain 150) without
touching the enamelled parts.
CLEANING OF THE COLLECTION CASING THROUGH THE HEAT ACCUMULATOR
The smokes collection casing can be cleaned either through the heat ACCUMULATOR (remove the horizontal sheet metal which is the base
of the heat ACCUMULATOR See Picture 9) the cooker or from the top.
To this purpose remove the circles of the Radiant-plate and disassemble the smokes pipe from the exhaust small trunk. Cleaning can be made
with a brush and a vacuum cleaner.
IMPORTANT: please verify that the deectors are set as indicated in the Picture.
Pay ATTENTION that after cleaning all dismounted parts are reinstalled hermetically.
ROUTINE MAINTENANCE PERFORMED BY QUALIFIED TECHNICIANS
Routine maintenance must be performed at least once a year.
Using wood as solid fuel, the generator requires annual routine maintenance, which must be performed by a qualied technician, using
only original spare parts.
Failure to comply can jeopardise the safety of the appliance and make the warranty null and void.
Respecting the frequencies of cleaning reserved for the user described in the use and maintenance manual, the generator is guaranteed
correct combustion over time, preventing any anomalies and/or malfunctioning that could require more interventions of the technician.
Requests for routine maintenance are not contemplated in the product warranty.
GASKETS
The gaskets guarantee the tightness of the stove and its consequent good functioning.
They must be controlled periodically. They must be replaced immediately if they are worn or damaged.
These operations must be carried out by a qualied technician.
CONNECTION TO THE FLUE
Vacuum and clean the pipe that leads to the ue yearly or any time that it is necessary. If there are horizontal tracts, the residue must be
removed before it can prevent the passage of the fumes.
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 m3 (for an
external temperature of 0°C).
Given that 1 kW corresponds to 860 kcal/h, it is possible to adopt a value of 35 W/m3.
Let’s suppose one wishes to heat a room of 150 m3 (10 x 6 x 2.5 m) in an insulated apartment. In this case, it is necessary to have 150 m3 x 35
W/m3 = 5250 W or 5,25 kW. As main heating, a 8 kW device is therefore su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 m37800 9.1 0,46
Naphtha L 8500 9.9 0,42
Electricity kW/h 860 1.0 4,19
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