21
FASTENING THE BURNER TO THE BOILER
(steel fixing flange)
1 - Boiler plate
2 - Insulating gasket
3 - Burner fixing flange
4 - Elastic collar
5 - Stud bolt
6 - Locking nut with washer
7 - Nut and washer for fastening the first
flange
Remark
When tightening the flange, it is important to do it evenly so that the inner faces are parallel between them.
Since the locking system is highly efficient, do not tighten the nuts too much.
During this operation (tightening of the flange locking nuts) keep the body of the burner lifted so that the
combustion head is kept in a horizontal position.
The burner is correctly fitted if the preheating tank is slightly tilted (i.e. higher on the fuel outlet side towards the nozzle).
This slight tilt prevents any build-up of gas inside the tank.
The presence of gas inside the preheating tank will considerably lengthen the time required to get the fuel up to
pressure. Therefore the burner could easily lock-out.
When fitting the burner to the boiler make sure that it is not positioned in a way that cancels out this tilt or, even worse,
that the preheater is tilted the opposite way.
CONDITIONS FOR GOOD INSTALLATION
Before prooceding with installation, check that:
1)
The chimney (cross section and height) complies with local standards.
2)
When it is necessary to make a refractory lining for the combustion chamber (if the type of boiler requires it),
then it must be made according to the specific instructions of the boiler manufacturer).
3)
The electric power supply line for the burner should be according to our diagram and the electrical
connections on the burner should match the voltage of the electric power supply line.
4)
Fuel pipelines should be made according to our diagram.
5)
The nozzle(s) fitted on the burner should be suitable for the boiler capacity; replace them with others, if necessary.
In no case should the quantity of fuel delivered exceed the maximum amount required by the boiler and the
maximum amount permitted for the burner.
Remember that the combustion head has been designed for
nozzles with a 45° spray angle. Only in special cases can nozzles with a different spray angle be fitted; in these
cases, however, make sure that the nozzle with a different spray angle will not cause problems (flame separation,
disk or combustion head fouling, violent ignition, etc.).
6)
When removing the protective plastic cap from the nozzle seat be careful because if the sealing surface is
indented (a slight scoring would be enough) it will cause fuel dripping.
7)
Make sure that the burner head enters the combustion chamber according to the boiler manufacturer's instructions.
ELECTRICAL CONNECTIONS
Is is advisable to make all the connections with flexible electric wire.
The electric lines should be at an adequate
distance from hot parts. Make sure that the electric line to which the unit will be connected, has frequency and voltage
ratings suitable for the burner.
Check that tha main line, the relevant switch with fuses (essential) and the current
limiter (if required) are capable of withstanding the maximum current absorbed by the burner.
For details, refer to the specific electric diagram for every burner.
ENGLISH
0002933330.tif
Summary of Contents for BT 15 N
Page 23: ...23 Viscosity Temperature Diagram...
Page 54: ......
