13
Grant Vortex External Module
4 - GENERAL BOILER INFORMATION
4.4.6 Two pipe oil supplies
Riello RDB burner - See Fig. 6
1 The fuel pump is supplied for use with a single
pipe fuel supply system. For use on a two pipe
system, it is necessary to fit the By-pass screw (see
Fig. 6) into the tapping in the return port.
2 The By-pass screw is supplied in the boiler
accessory pack.
3 Remove the plastic burner cover (two screws).
4 Remove and discard the blanking plug from the
return connection of the pump and fit the By-pass
screw using an hexagonal key.
5 Connect the return oil flexible fuel hose to the pump.
6 Connect the
3
/
8
" to
1
/
4
" BSP adaptor to the flexible
fuel hose.
Fig. 4 - De-aeration device system
Fig. 5 - Tiger loop 'de-aeration' device
Fig. 6 - Riello RDB pump
1 Oil inlet connection
2 Return connection
3 By-pass screw
4 Pressure gauge connection
5 Pressure adjuster
6 Vacuum gauge connection
7 Solenoid
8 Supply to nozzle
1
2
3
4
5
6
7
8
1/4" BSP female
connections
Tiger Loop
SUPPLY
TO PUMP
RETURN
FROM PUMP
SUPPLY
FROM TANK
Fire valve
Tankmaster
See
section 4.4.6
Sludge
valve
Fill
pipe
Vent
pipe
Fuel
storage
tank
De-aeration device
e.g. Tiger Loop
See Fig. 5
Fire
valve
sensor
Supply
1m
Return
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