La Nordica Romantica 4,5 [22/72] Products made of natural stone

La Nordica Romantica 4,5 коричневая [22/72] Products made of natural stone
12.5. PRODUCTS MADE OF NATURAL STONE
Natural stone has to be cleaned with very thin abrasive paper or with an abrasive sponge. Do NOT use any cleanser or uid.
12.6. VARNISHED PRODUCTS
After some years of product use a change in the varnished details colour is totally normal. This is due to the considerable temperature
range the product is subject to whenever in use and to the varnish ageing of time passing by.
ATTENTION: before any possible application of the new varnish, do clean and remove all the traces from the surface which has to be
varnished.
12.7. ENAMELLED PRODUCTS
For the cleaning of enamelled surfaces use soap water or not aggressive and not chemically abrasive detergents. After the cleaning do
NOT let soapy water or any cleanser dry but remove them immediately.
DO NOT use sandpaper or steel wool.
12.8. CHROMIUM-COMPONENTS
If the components become bluish due to overheating, this can be solved with a suitable product for cleaning. DO NOT use abrasives or
solvents.
ROMANTICA 3,5 - ROMANTICA 4,5
22 1093013
12.9. CLEANING OF THE COLLECTION CASING COOKING through the oven
The smokes collection casing can be cleaned either through the oven (remove the horizontal sheet metal which is the base of the oven
See Picture 9 at page 61) the cooker 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.
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.
12.10. 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.
12.11. 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 61). 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

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