baltur TBML 450LX ME, Instruction Manual For Installation, Use And Maintenance

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AUXILIARY PUMP
In some cases (excessive distance or differences in level) the system
must be implemented with a "loop" supply circuit with an auxiliary
pump, avoiding to connect the burner pump directly to the tank.
In this case, the auxiliary pump can be started when the burner starts
and stopped when it stops.
The electrical connection of the auxiliary pump is made by connecting
the coil (230V), which controls the pump remote control switch, to ter-
minals “N” (input terminal board of the equipment) and “L1” (downstre -
am the motor remote control switch).
Always follow the instructions below:
• The auxiliary pump must be installed as close as possible to the
liquid to be sucked.
• The head must be suitable for the relative plant.
• We recommend a flow rate equal at least to that of the burner pump.
• If several burners are installed in the same supply circuit, use a
pump whose flow rate is at least equal to the sum of the flow rates of
the boost pumps of the burners.
• The connection pipes must be dimensioned based on the flow rate
of the auxiliary pump.
• Avoid electrically connecting the auxiliary pump directly to the remo -
te control switch of the burner.
• Adjust the pressure at approx. 0.5 - 1 bar, if the circuit is equipped
with a pressure regulator.
SCHEMATIC HYDRAULIC DIAGRAM OF PRESSURE SUPPLY TO ONE OR MORE TWO-STAGE OR MODULATING BURNERS
1 Main tank
2 Liquid fuel filter
3 Circulation pump
4 Water and system drain
5 Air-gas drain normally closed
6 Fuel recovery and degasifier
7 One-way valve
8 By-pass (normally closed)
9 Pressure regulator 0.2 - 1 bar)
10 Liquid fuel pressure gauge on delivery circuit (0 - 4 bar)
A Connection to the burner
CAUTION / WARNINGS
Fuel recovery tanks (diameter 150 mm - height 400 mm) must be installed as
close as possible to the burner at least 0.5 m above the burner pump.
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