baltur BT 250 DSG 4T, Manual User Instructions

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ENGLISH
FUEL PIPELINES (DIESEL)
The following description covers the basic requirements to ensure
efficient operation. The unit is equipped with a self-suction pump,
capable of drawing oil directly from the tank also for the first fill-up.
To ensure an efficient operation, it is better to install suction and
return pipes with welded fittings and to avoid the use of threaded
connections, which often cause air infiltration interfering with pump
operation and consequently with the burner.
Where a removable fitting is required, use the welded flange
method inserting a fuel resistant gasket to obtain a positive sealing.
For systems requiring pipes with a relatively small diameter we
recommend the use of copper pipes. For unavoidable joints we
recommend the use of biconic fittings. The annexed tables show
the indicative diagrams for the different types of systems depending
on the position of the tank in respect to the burner.
The suction pipe should run up-slope towards the burner to prevent
possible formation of gas bubbles. Where more than one burner is
installed in one boiler room, it is essential that each burner has its
own intake pipe. Only return pipes can lead to a single manifold pipe
with an adequate cross section leading to the tank. Never connect
the return pipe directly to the suction pipe. It is a good practice to
properly heat-insulate the suction and return pipes to prevent cooling
which would otherwise affect the unit efficiency. Pipe diameters (to be
strictly complied with) are listed in the following tables. The maximum
amount of vacuum that the pump can withstand noiselessly under
normal operating conditions is 35 cm Hg; if this limit is exceeded
normal pump operation will no longer be guaranteed. Maximum
suction and return pressure = 1 bar.
BaLTUr PUmP 300 ÷ 700/HP mODeL
1 Intake
2 Vacuum gauge connection 1/4”
3 Return
4 Pump data plate
5 Delivery (nozzle)
6 Pressure gauge connection 1/4”
7 Heating element seat
8 Pump pressure adjustment