Cleaning The Flue; Cleaning The Fireplace; Maintenance On The Water System; Calculation Of The Thermal Power - Nordica DSA Gebrauchsanleitung

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 fire-resistant material equipped with an
air-tight cover. The container has to be placed on a fire-resistant floor, far from flammable materials up to the switching off
and complete cooling.

10.3. 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-flue 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 fire in the flue.
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 flue (checking of possible deposits).
Excessive incrustation deposits on the inner walls of the hearth considerably reduce the efficiency of heat exchange; therefore, remove
these deposits using a steel brush whenever necessary. Never use corrosive substances that can damage the thermo-fireplace and
the boiler.

10.4. CLEANING THE FIREPLACE

During cleaning remove the top cap of the fireplace which is located on the exhaust fumes pos. B
help of a hammer as indicated in to the picture).
ATTENTION: when you remove the cap and the top lock steel plate of the fireplace, the dirtiness that is inside the chamber of exhaust
fumes falls down, therefore avoid to dirty the inside of the fireplace.
When the cleaning is completed: - put the top cap of the fireplace into its place (B). You have to support the cap to the wall above the
fireplace by passing it through the corresponding slots (C) and then, with a rotary movement of the hand, send the screws at the machined
seats into the wall (D) and leave the cap as support on the upper wall.
ATTENTION: The absence of the cap (B) and the top lock steel plate of the fireplace (E) causes a strong depression, leading to
excessively fast combustion and excessive wood consumption, with consequent overheating of the appliance, forge effect,
and decreases the heat discharge of the boiler.

10.5. MAINTENANCE ON THE WATER SYSTEM

Excessive incrustation deposits on the inner walls of the hearth considerably reduce the efficiency of heat exchange; therefore, remove
these deposits using a steel brush whenever necessary. Never use corrosive substances that can damage the thermo-fireplace and
the boiler.
With the system switched off, once a year carry out the following checks:
• Check the operation and efficiency of the blowdown and safety valves. If they are defective, contact your authorised installer. IT IS
STRICTLY FORBIDDEN TO REMOVE OR TAMPER WITH THE SAFETY DEVICES.
• Check the thermal insulation of the filling pipe and the safety pipe.
• Make sure that the system is filled and under pressure, checking the water level in the expansion tank; also check that it is working
properly and check the efficiency of the safety pipe.

11. 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 calorific value necessary for a properly insulated room is 30 kcal/h per m
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
Let's suppose one wishes to heat a room of 150 m
x 38 W/m = 5700 W or 5,7 kW. As main heating, a 8 kW device is therefore sufficient.
3
Fuel
Dry wood (15% humidity)
Wet wood (50% humidity)
Wood briquettes
Brown coal briquettes
Normal anthracite
Coke
Natural gas
Naphtha
Electricity
26
(10 x 6 x 2.5 m) in an insulated apartment. In this case, it is necessary to have 150 m
3
Approximate combustion
value
Unit
kcal/h
kg 3600
kg 1850
kg 4000
kg 4800
kg 7700
kg 6780
m 7800
3
L 8500
kW/h 860
FOCOLARE 80 IDRO CRYSTAL - DSA
Picture 9 at page 25
.
3
Required quantity in relation to 1 kg of
dry wood
kW
4.2
2.2
5.0
5.6
8.9
7.9
9.1
9.9
1.0
(the first time by the
(for
3
3
1,00
1,95
0,84
0,75
0,47
0,53
0,46
0,42
4,19
6097811 - IT-EN-DE-FR