Grant Aerona3 Series, Installation And Servicing Instructions

Page: 15 / 88

Section 3: Oil Storage and Supply System Page 15
3.2 Burner Oil Connection
The burner 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, as shown in Figure 3-7, into the tapping in the
return port.
The by-pass screw is supplied in the boiler accessory pack.
1. Remove the plastic burner cover (secured by one screw).
For ease of access to the fuel pump, to fit the by-pass screw
and connect the oil lines, the burner can be removed from the
boiler. To do this, unscrew the single nut at the top of the burner
(using a 13 mm spanner) and withdraw the burner from the
boiler.
2. Remove and discard the blanking plug from the return
connection of the pump and fit the by-pass screw using an
hexagonal key.
The blanking plug supplied in the inlet (suction) port may now
be plastic and will not provide an oil tight seal when the pump
is running. Ensure that the supply from the tank is connected
to this port and that the plastic plug is discarded.
!
WARNING
3. Connect the return oil flexible fuel hose to the pump.
4. Connect the 3/8" to 1/4" BSP adaptor to the flexible fuel hose.
Flexible fuel hoses and adaptors are available to purchase from
Grant UK. Refer to Section 1.8.
2
1
3
4
5
6
7
8
Figure 3-7: Riello RDB pump
Table 3-8: Riello RDB pump key
Item Description
1 Inlet (suction) port
2 Return port
3 By-pass screw
4 Pressure gauge port
5 Pressure adjustment
6 Vacuum gauge port
7 Solenoid
8 Auxiliary pressure test point
3.3 Burner Components
3
9
5
6
10
4
1
7
8
2
Figure 3-9: Riello RDB burner components
Table 3-10: Riello RDB burner components key
Key Description
1 Oil pump
2 Digital control box
3 Reset push-button with lockout lamp
4 Flange with insulating gasket
5 Air damper adjustment screw
6 Snorkel (balanced flue) connection
7 Pump pressure adjustment screw
8 Pressure gauge port
9 UV sensor
10 Combustion head