Fuel Pipeline - Auxiliary Pump - baltur BT 250 DSG-4T Manual De Instrucciones

FUEL PIPELINE (LIGHT OIL)
The following description covers
the basic requirements to ensure
effi cient operations.
The unit is equipped with a self-
suction pump capable of sucking
oil directly from the cistern also for
the fi rst fi ll-up. To ensure effi cient
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 infi ltration'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
fi ttings.
DANFOSS PUMP MOD. 160 ÷ 600L/H
1 Heating element seat
2 1/4" Pressure gauge connection
3 Delivery (nozzle)
4 Pump plate
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. 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 Never connect the return pipe
directly to the suction 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 effi ciency. 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
5
6
7
8
29 / 69
0006081081_2006/10
cm. of Hg ; if this limit is exceeded,
normal pump operations can no
longer be guaranteed.
Maximum suction and return
pressure = 1 bar.
Return
1/4" Vacuum-meter connection
Suction
Pump pressure regulation
N° 0002901460
Rev.: 26/09/2006