baltur BT 40 DSG Manual De Instrucciones página 45

AUXILIARY PUMP
In some cases (excessive distance
or difference in level) it is necessary
to install a "loop-type" supply system
with an auxiliary pump, which
dispenses with the connection of the
burner pump directly to the tank.
In this case the auxiliary pump can
be put into operation when the
burner is started up and cut-off when
the latter stops.
The electric wiring of the auxiliary
pump is made by connecting the
coil (230 V) which controls the pump
remote control switch to terminals
DIAGRAM OF PIPES OF FEED SYSTEM FOR LIGHT OIL BURNERS OR HEAVY OIL BURNERS WITH
"N" (equipment terminal board) and
"L1" (downstream the motor remote
control switch).
It is important to comply strictly with
the previsions set forth here below:
- The auxiliary pump should be
installed as near as possible to
the fuel to be sucked.
- Its head should meet the
r e q u i r e m e n t s o f s u b j e c t
system.
- We recommend a delivery rate
equal to at least that of the
burner pump.
- Connection pipes should be
MAXIMUMNOMINAL VISCOSITY (5 °E AT 50 °C)
5 / 98
00060807_200709
sized to cope with the delivery
rate of the auxiliary pump.
- Always avoid to electrically
connect the auxiliary pump
directly to the remote control
switch of the burner motor.
1 - Main tank
2 - Filter
 - Circulation pump
4 - Water and plant discharge
5 - Air-gas discharge, normally closed
6 - Fuel and degasser recovery
7 - One-way valve
8 - By-pass (normally closed)