Two Pipe Oil Supplies; Rdb Pump - Grant Combi 70 V3 User's Installation Manual

5.3.6 Two pipe oil supplies

See Fig. 9
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. 9) 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 - GENERAL BOILER INFORMATION
Tiger Loop
RETURN
FROM PUMP
SUPPLY
TO PUMP
Fig. 8 - Tiger loop
8
Fig. 9 - RDB pump
1 Oil inlet connection
2 Return connection
3 By-pass screw
4 Pressure gauge connection
Combi V3, Combi Max and Vortex Combi models
1/4" BSP female
connections
FROM TANK
5 Connect the return oil flexible fuel line to the pump.
3
6 Connect the
fuel line.
7 Flexible fuel lines and adaptors are available to
purchase from Grant Engineering (UK) Ltd.
8 The burner cover may be left off until the boiler is
commissioned.
7
6
5
4
3
1 2
5 Pressure adjuster
6 Vacuum gauge connection
7 Solenoid
8 Supply to nozzle
SUPPLY
1
/ " to / " BSP adaptor to the flexible
8 4
19