Auxiliary Pump - baltur BT 250 DSG Betriebsanleitung

AUXILIARY PUMP (See BT 8666/3)
In some cases (excessive distance or difference in level) it is necessary to install a "loop-type" supply system with
an ancillary pump, which dispenses with connecting the burner pump directly to the cistern. In this case, the
ancillary pump can be put into operation when the burner is started up and cut off when it stops. The electrical
connection of the ancillary pump is made by connecting the coil (230 V) which controls the pump remote control
switch to terminals "N" (the control box terminal board) and "R" (downstream the motor remote control switch).
It is important to comply strictly with the following previsions:
- The ancillary pump must be installed as near as possible to the fuel to be sucked.
- Its head should suit the system in question.
- We recommend an output at least equal to that of the burner's pump.
- Connection pipes should be of a size to cope with the output of the ancillary pump.
- Always avoid electrically connecting the ancillary pump directly to the remote control switch of the
burner motor.
DIAGRAM OF PIPES OF FEED SYSTEM FOR LIGHT OIL
BURNERS OR HEAVY OIL BURNERS WITH MAXIMUM NOMINAL
VISCOSITY 5 °E AT 50 °C
1 - Main tank
2 - Filter
3 - 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)
- The light oil recovery tanks
(diameter ~ 150, height ~ 400) should be
installed as near as possible to the burner
and should be about 0,5 m. higher with
respect to the burner's pump.
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BT 8666/3
REV.:03/06/2003