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7.11 BURNER CONNECTION
Before installation you are advised to thoroughly clean the inside of all the fuel supply system pipes in order to remove
any foreign matter that could affect correct operation of the boiler. See technical specification tables and check the
max pressure value inside the furnace.
a) Check the internal and external seal of the gas supply system;
b) Regulate the gas flow according to the power required by the boiler;
c) Check that the boiler is fired by the correct type of gas;
d) Check that the supply pressure is within the values specified on the burner rating plate;
e) Check that the supply system is sized for the maximum flow rate necessary for the boiler and that it is provided
with all control and safety devices provided for by the regulations referred to above;
f) Check that the boiler room vents are sized in order to guarantee the air flow established by the regulations re-
ferred to above and that they are in any case sufficient to obtain perfect combustion.
g) Check that the feeding line and the gas ramp comply with the regulations in force;
h) Check that all the gas connections are sealed;
i) Check that the gas pipes are not used as earth connections for electrical appliances.
If the boiler is not going to be used for some time, close the fuel supply cock or cocks.
IMPORTANT: check that the air spaces between the burner draught tube and the manhole are suitably
filled with thermoinsulating material.
The thermoinsulating strip provided with the boiler must be wrapped around the mouthpiece for at least an entire
circumference of the flame radiation to protect the flange of the burner. Not that the ceramic insulation is necessary
to fill the gap until the insulation inside surface of the door.
The above picture is only for reference.
KEY:
1. Burner
2. Manhole
3. Thermoinsulating
material
4. Flange
All details on the draught tube lenght (
P6
), the diameter of the burner hole (
Øb
) and the pressurization are included
in the par. Technical Specifications.
ATTENTION: The boiler is designed for continuous use only with NATURAL GAS and LPG. The
improper use of other fuels will void the boiler warranty.
IMPORTANT
These devices are suitable for operation both with gas and diesel fuel.
The operation with diesel fuel shall be considered as an emergency condition or a test of the diesel circuits
and for this reason it shall not last more than a consecutive week per year. During the operation with diesel
fuel, the temperature and load settings must be such to avoid the formation of condensate from the flue gas.
The diesel fuel combustion must occur with a sufficient quantity of air to allow a smoke value between 0-1
according to Bacharach scale. The recommended diesel fuel is the type with a low sulphur content; at any
rate, a sulphur content higher than 0.1% is not allowed (standard diesel fuel for heating purposes).
