Conditions For Good Installation - Electrical Connections - Fuel Pipeline - baltur BT 250 DSG Betriebsanleitung

CONDITIONS FOR GOOD INSTALLATION
Before proceeding with installation, check that:
1) The chimney (cross section and height) complies with the boiler manufacturer's instructions and 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 boiler. 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.
8) Before connecting the flexible pipes, remove the plastic protective caps from the pump fittings.
ELECTRICAL CONNECTIONS
The electrical connections of the burner are reduced to a minimum. It 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 the 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
each burner model.
FUEL PIPELINE (LIGHT OIL)
The following description covers the basic requirements to ensure efficient operations.
The unit is equipped with a self-suction pump capable of sucking oil directly from the cistern also for the first fill-
up. This statement is only valid if the required conditions exist (refer to the table of distances and differences in
levels). To ensure efficient operations, it is preferable to make suction and return pipes with welded fittings and to
avoid the use of threaded connections which often cause air infiltration's and disturb pump operations and
consequently those of the burner.
Where a removable fitting is required, use the welded flange method with a fuel resistant gasket inserted to
ensure a perfect sealing. For systems requiring pipes with a relatively small diameter, we recommend the use of
copper pipes. For unavoidable connections we recommend the use of biconic fittings.
The attached tables show diagrams of the different types of systems depending on the position of the tank with
respect to the burner. The suction pipe should run up-slope towards the burner to avoid the possible formation of
gas bubbles. Where more than one boiler is installed in one boiler room, it is essential that each burner has its
own suction pipe.
Only return pipes can lead to a single manifold pipe with an adequate cross section leading to the cistern.
Never connect the return pipe directly to the suction pipe.
It is advisable to properly insulate the suction and return pipes to prevent cooling which would effect the unit's
efficiency. Pipe diameters (to be strictly complied with) are listed in the following tables.
The maximum amount of vacuum that the pump can withstand when operating regularly and silently is 35 cm. of
Hg ; if this limit is exceeded, normal pump operations can no longer be guaranteed.
Maximum suction and return pressure = 1 bar.
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