Monoblocco Ghisa-IRONKER-750
28
6099751 Rev.08 – EN
13.4.
MAINTENANCE OF THE EXTENSIBLE GUIDES
To work silently, as well as in a reliable and robust way, the doors of the monoblocks 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 difficult and noisy.
For this reason, together with each device a high temperature grease syringe 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 the supplied 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 of the syringe La Nordica.
You should only use spare parts approved and supplied by La Nordica.
Please contact your specialized retailer if you require spare parts.
YOU MUST NOT MAKE ANY CHANGES TO THE DEVICE!!!
14. SUMMER TIME
After having performed the cleaning of the hearth, of the stack and of the flue, removing completely the ash and other
possible residuals, close all doors of the hearth and the related registers.
It is suggested to perform the flue cleaning at least once a year; in the meantime, verify the actual state of the door
seals, which do not assure the good operation of the device, if they are not completely integral (i.e. if they do not
adhere anymore to the door)! Therefore, it is necessary to replace them.
In case of humidity of the room where the device is located, place the absorbing salts within the hearth.
Protect the internal cast iron parts with neutral Vaseline, if you wish to keep the aesthetic appearance unchanged in
time.
15. 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 40 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 50 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 50 W/m
3
= 7500 W or 7.5 kW. As main heating, a 10 kW device is therefore sufficient.
Approximate combustion value
Required quantity in relation
to 1 kg of dry wood
Fuel
Unit
kCal
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
m3
7800
9.1
0.46
Naphtha
L
8500
9.9
0.42
Electricity
kW/h
860
1.0
4.19
