baltur TBML 1200 ME, Инструкция по установке, использованию и обслуживанию, Страница: 63 / 96

LIQUID FUEL SUPPLY SYSTEM
The burner pump must receive the fuel from a suitable supply circuit
featuring an auxiliary pump which may feature a pressure regulator
adjustable from 0.5 to 3 bar.
The fuel supply pressure to the burner pump must not change both
with burner off and with working burner at the maximum fuel output
required by the boiler.
The supply circuit can be realized without pressure regulator, using the
dedicated hydraulic diagram.
The pipe dimensioning must be carried out according to the pipe length
and the flow rate of the installed pump.
These instructions ensure a good operation of the product.
The anti-pollution prescriptions, as well as the provisions set forth by
the local authorities, refer to the specific publications in force in the
country where the product will be installed.
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.
• 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.
HYDRAULIC DRAWING OF SUPPLY FOR ONE OR MORE TWO-STAGE OR MODULATING BURNERS WITH MAXIMUM NOMINAL
VISCOSITY (5°E AT 50°C)
8 8
8
5
5
5 7 7 7
6 6
6 4
4
4
1
2 3
1 Main tank
2 Liquid fuel filter
3 Circulation pump
4 Water and system drain
5 Fuel recovery and degasifier
6 One-way valve
7 By-pass (normally closed)
A Connection to the burner
The fuel recovery tanks (diameter ~ 150 mm
- height ~ 400 mm) must be installed as close
as possible to the burner at 0.5 m above the
burner pump.
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ENGLISH