Riello RG2F Installation, Use And Maintenance Instructions page 45

3.3 FUEL SUPPLY
The burner is designed to allow entry of the oil supply pipes on either side.
Depending on the oil supply pipes position (to the right or to the left hand side of the burner) the fixing plate
(1) and closing plate (2) should be reversed, (see fig. 4).
1
3.4 HYDRAULIC SYSTEMS
It is necessary to install a filter on the fuel sup-

ply line.
PUMP
(see fig. 5)
The pump is designed to allow working with two
pipes .
In order to obtain one pipe working it is necessary
to unscrew the return plug (2), remove the by-pass
screw (3) and then screw again the plug (2) with a
torque of 0.5 Nm.
Before starting the burner make sure that the
return pipe-line is not clogged. An excessive back
pressure ( 1 bar) would cause the damage of the
pump seal, with subsequent fuel leaks inside the
burner.
The pump has a delivery pressure regulation device
(4). Pressure increases if turned in a clockwise direc-
tion, and decreases if turned in the other direction.
An indication of sensitivity is 1 bar per turn.
The pressure can be regulated in a range of 8 - 15
bar.
Fig. 4
2 2
D5709
8
1
2
3
1 - Suction line
2 - Return line
3 - By-pass screw
4 - Gauge connection
5 - Pressure adjuster
6 - Suction gauge connection
7 - Valve
8 - Auxiliary pressure gauge
5 GB
Fig. 5
D5026
4 5 6
1
7
20039769