Riello RG4F Installation, Use And Maintenance Instructions page 43

3.3 FUEL SUPPLY
The burner is designed
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. 7).
1
3.4 HYDRAULIC SYSTEM
It is necessary to install a filter on the fuel

supply line.
PUMP
•
The pump is designed to allow working with two pi-
pes.
•
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 di-
rection, 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. 8).
to allow entry of
2
1
2
3
4
5
6
7
8
5 GB
the oil supply pipes
2
8
1
2 4
3
Suction line
Return line
By-pass screw
Gauge connection
Pressure adjuster
Suction gauge connection
Valve
Auxiliary pressure gauge
on either side.
1
D5542
Fig. 7
D5026
5 6 7
Fig. 8
2903004