La Nordica Monoblocco 800 Angolo SX [23/76] Cleaning out the ashes

La Nordica Monoblocco 800 Angolo SX [23/76] Cleaning out the ashes
MONOBLOCCO 800 ANGOLO
6098401 23
13.2. 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.
13.3. 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 a 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).
During the cleaning, it is necessary to remove the ash drawer, the grating, and the smoke deectors from the device in order to ease the
fall of the soot. The deectors can be easily extracted from their seats since they are not fastened using screws. Once the clearing has
been carried out, place them back in their seats (Picture 10 at page 63).
CAUTION: The lack of the deectors causes a strong depression, with a too fast combustion, an excessive consumption of wood
with related overheating of the device.
13.4. MAINTENANCE OF THE EXTENSIBLE GUIDES
To work silently, as well as in a reliable and robust way, the doors are fastened to the extensible ball guides. By using the device continuously,
the lubricant of the guides tends to run out progressively in time making their sliding more difcult and noisy. For this reason, together
with each device a high temperature grease is supplied in order to make the lubrication of the guides possible for the user, in case it
becomes necessary (excessive noise or reduction of smoothness). After having completely lifted the door of the stack, using a syringe,
apply internally on the track on a visible point, as high as possible, two grease balls (corresponding to 0.5 ml of the graduated scale of the
syringe). Pay attention not to exceed the suggested quantity. Repeat the same operation on the other track and lift and lower the door many
times so that the grease distributes on all balls. CAUTION: use exclusively the grease supplied by La NORDICA.
14. 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

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