AXE 3 32 B 100
8
EN
cod. 3540Z420 - 03/2011 (Rev. 01)
3.4 Burner connection
An oil or gas burner, with blown air for pressured furnaces, can be used if its operation character-
istics are suitable for the size of the boiler furnace and its overpressure. The choice of burner must
be made beforehand, following the manufacturer's instructions, according to the work range, fuel
consumption and pressures, as well as the length of the firebox. Install the burner in compliance
with the Manufacturer's instructions.
3.5 Electrical connections
Connection to the electrical grid
B
The unit's electrical safety is only guaranteed when correctly connected to an efficient
earthing system executed according to current safety standards. Have the efficiency and
suitability of the earthing system checked by professionally qualified personnel. The
manufacturer is not responsible for any damage caused by failure to earth the system.
Also make sure that the electrical system is adequate for the maximum power absorbed
by the unit, as specified on the boiler dataplate.
The boiler is prewired and provided with a Y-cable and plug for connection to the electricity line.
The connections to the grid must be made with a permanent connection and equipped with a bi-
polar switch whose contacts have a minimum opening of at least 3 mm, interposing fuses of max.
3A between the boiler and the line. It is important to respect the polarities (LINE: brown wire / NEU-
TRAL: blue wire / EARTH: yellow-green wire) in making connections to the electrical line. During
installation or when changing the power cable, the earth wire must be left 2 cm longer than the
others.
B
The user must never change the unit's power cable. If the cable gets damaged, switch
off the unit and have it changed solely by professionally qualified personnel. If changing
the electric power cable, use solely
“HAR H05 VV-F”
3x0.75 mm2 cable with a maxi-
mum outside diameter of 8 mm.
Room thermostat (optional)
B
IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE CON-
TACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMINALS WILL
PERMANENTLY DAMAGE THE ELECTRONIC BOARD.
When connecting time controls or a timer, do not take the power supply for these devices
from their breaking contacts Their power supply must be by means of direct connection
from the mains or with batteries, depending on the kind of device.
Accessing the electrical terminal block
Lift the cover to access the terminal block for the electrical connections.
fig. 2 - Accessing the terminal block
3.6 Connection to the flue
The unit must be connected to a flue designed and built in compliance with current reg-
ulations. The pipe between the boiler and flue must be made from material suitable for
the purpose, i.e. heat and corrosion resistant. Ensure the seal at the joints and insulate
the entire pipe between boiler and flue, to prevent the formation of condensate.
4. SERVICE AND MAINTENANCE
All adjustment, conversion, commissioning and maintenance operations described below must
only be carried out by Qualified Personnel (meeting the professional technical requirements pre-
scribed by current regulations) such as those of the Local After-Sales Technical Service.
LAMBORGHINI
declines any liability for damage and/or injury caused by unqualified and unau-
thorised persons tampering with the unit.
4.1 Start-up
B
Checks to be made at first lighting, and after all maintenance operations that involved
disconnecting from the systems or work on safety devices or parts of the boiler:
Before lighting the boiler
•
Open any on-off valves between the boiler and the systems.
•
Check the tightness of the fuel system.
•
Check the pre-filling of the expansion tank
•
Fill the water system and make sure that all air contained in the boiler and the system has
been vented by opening the air vent valve on the boiler and any vent valves on the system.
•
Make sure there are no water leaks in the system, hot water circuits, connections or boiler.
•
Make sure the electrical system is properly connected and the earth system works properly.
•
Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler.
•
Fit the pressure gauge and the vacuum gauge on the pump (remove after starting) of the
burner.
•
open the gate valves along the diesel pipe
Checks during operation
•
Turn the unit on as described in sec. 2.3.
•
Make sure the fuel circuit and water systems are tight.
•
Check the efficiency of the flue and air/fume ducts while the boiler is working.
•
Check correct water circulation between the boiler and systems.
•
Check correct boiler lighting by doing various tests, turning it on and off with the room ther-
mostat or remote control.
•
Make sure the smoke box and burner door are tight.
•
Make sure the burner works properly.
•
Carry out a combustion analysis (with boiler stable).
4.2 Maintenance
Periodical check
To ensure proper operation of the unit, have it checked yearly by qualified personnel,
providing for the following:
•
The control and safety devices must function correctly.
•
The fume exhaust circuit must be perfectly efficient.
•
Make sure there are no obstructions or dents in the fuel supply and return pipes.
•
Clean the fuel intake line filter.
•
Check correct fuel consumption
•
Clean the combustion head in the fuel outlet zone, on the turbulence disc.
•
Leave the burner operating at max. for about ten minutes, then analyse the combus-
tion, checking:
-
Correct setting of all the elements specified in this manual
-
Fume temperatures at the flue
-
CO2 percentage content
•
The ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For cleaning, do not
use chemical products.
•
The fuel and water systems must be tight.
•
The water pressure in the system when cold must be approx. 1 bar; otherwise bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
Check the magnesium anode and replace it if necessary.
A
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
and damp cloth, if necessary soaked in soapy water. Do not use any abrasive
detergents and solvents.
Boiler cleaning
1.
Disconnect the power supply to the boiler.
2.
Remove the boiler front panel.
3.
Open the door
A
by undoing the nuts
B
.
4.
Clean the inside of the boiler and the entire path of exhaust fumes, using a tube
brush or compressed air.
5.
Then close the door
A
, fixing it with the nuts
B
.
To clean the burner, refer to the Manufacturer's instructions.
fig. 3 - Boiler cleaning
4.3 Troubleshooting
Fault
Two shutdown conditions resettable by the user can occur :
A
Burner shutdown signalled by the special indicator. Refer to the burner manual.
B
Cutting in of the safety thermostat, which occurs when the boiler temperature
reaches a value beyond which a dangerous condition may be created. To re-
store operation, unscrew cap 3 of fig. 1 and press the reset button below.
If the problem persists, request the assistance of Qualified Personnel or the After-Sales
Centre.
In case of a fault and/or poor operation, deactivate the unit, do not try to fix the problem
or directly carry out any operation. Contact authorised and professionally qualified per-
sonnel.
A
B
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