Nordica ROSA 4.0 ROSETTA BII Manual Del Usuario página 24

The heating of the environment is made by irradiation: through the panoramic glass and the external hot surfaces of the cookers, the heat
is radiated into the environment.
The cooker is equipped with controls of primary and secondary air by which it is adjusted the combustion air.
1A - PRIMARY Air Register (Picture
With the lower register, the passage of primary air in the lower part of the cooker is regulated through the ash drawer and the grill in the
direction of the fuel. The primary air is necessary for the combustion process. The ash drawer must be emptied regularly, so that the ash
cannot block the primary air intake for combustion. The primary air also keeps the flame alive.
The primary air register must be almost completely closed during wood combustion, as otherwise the wood burns too quickly and the
thermo-product may overheat.
2A - sECONDARY Air Register
This register must be open (i.e. turned completely to the right), in particular for the combustion of wood, so that unburnt carbon does not
undergo a post-combustion (see chapter NORMAL OPERATION).
Through this register it is possible to adjust the power of the heating. Leaving it slightly open, according to the flue of the chimney, it is
possible to keep the glass clean.
Picture 9
Rosetta sinistra BII
furnished (see chapter VENTILATION AND AERATION OF THE INSTALLATION PREMISES).
The register regulation necessary in order to obtain nominal calorific output is the following (see Cap. TECHNICAL DATA):
ROSA 4.0
Rosetta BII
Rosetta Sinistra BII
B - FLUE gAs Control
(Picture
(Conversion from the cooker PLATE USE function to the cooker HEATING – OVEN USE function)
On the right of the front of the stove/cooker, between the protection rail and the oven door, is the FLUE GAS control lever, recognisable as
a bronze knob. When the lever is pushed towards the back of the stove/cooker, the combustion gases flow above the oven directly towards
the exhaust stub (cooker function – PLATE USE); when the lever is pulled towards you, the combustion gases flow all around the oven, so
the internal temperature increases evenly (cooker – oven cooking and heating – OVEN USE).
To ignite the flame follow the instructions below (see Cap. IGNITION) :
• Open the FLUE GAS Register (cooker function – PLATE USE) to aid flue gas exhaust. Position the register (any butterfly valve placed on the
flue gas exhaust pipe must also be opened).
• Open the primary air register (placed on the ash tray).
• After having started the fire with small pieces of wood and waited until it is well lit.
• Bring the flue gas register to the oven position.
• Close the any butterfly valve placed on the flue gas exhaust pipe must also be opened.
The control regulation during the ignition phase is the following :
ROSA 4.0 - Rosetta BII - Rosetta Sinistra BII
How to set the machine to BOIL WATER
• Keep the flue gas register on the cooker function – HOTPLATE USE.
• Primary air half open.
• Secondary air completely open.
• Load wood as described in the manual (hourly load).
How to set the machine to COOk BIsCUITs
• Switch the cooker on with a moderate load of wood until the oven thermometer indicates 150 °C.
• Wait for 190 – 200 °C to be reached without additional wood being loaded.
• Load a single piece of wood weighing 500 - 600 g one at a time and wait for it to burn completely before adding another.
• This keeps the oven temperature stable around 190 – 200 °C.
• Place the tray of biscuits in the low position for 25-30 minutes (slow cooking) or in the medium position for 15-20 minutes (quick cooking).
• Turn the tray halfway through cooking, if necessary.
THE FLUE
Essential requirements for correct appliance operation:
• the internal section must preferably be circular;
• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat,
combustion products and any condensation;
• there must be no narrowing and vertical passages with deviations must not be greater than 45°;
• if already used, it must be clean;
• all the sections of the flue gas duct must be accessible to inspection;
• inspection openings must be provided for cleaning.
• the technical data from the instruction manual must be respected;
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6).
6).
(Picture
: It is possible to get the air sECONDARY directly from outside through a flexible tube fireproof NOT
PRIMARY air
Picture 6
OPEN
CLOSED
3 mm OPEN
6)
PRIMARY air
sECONDARY air
OPEN
OPEN
OPEN
sECONDARY air
OPEN
ENgLIsH
TERTIARY air
PRE-ADJUSTED
PRE-ADJUSTED
PRE-ADJUSTED
FLUE gAs Control
OPEN PLATE USE