5.11.2 Single-Pipe Circuit; Hydraulic System Layout - Riello RLS 100 Installation, Use And Maintenance Instructions

5.11.2 Single-pipe circuit

In order to obtain single-pipe working it is necessary to unscrew
the return hose, remove the by-pass screw 6)(Fig. 19) and then
screw the plug 7)(Fig. 19).
The distance "P" must not exceed 10 meters in order to avoid
subjecting the pump's seal to excessive strain; the distance "V"
must not exceed 4 meters.
For the priming pump loosen the screw 3)(Fig. 21) in order to
bleed off the air contained in the suction line and wait until the fuel
flows out.
Key (Fig. 18)
H Pump/Foot valve height difference
L Piping length
ø Inside pipe diameter
1 Burner
2 Pump
3 Filter
4 Manual on/off valve
5 Suction line
6 Foot valve
7 Rapid closing manual valve remote controlled (only Italy)
8 On/off solenoid valve (only Italy)
11 Tank filter
5.12

Hydraulic system layout

D1184
20033295
Installation
11 7
6
+H
(meters)
4
3
2
1
0.5
Key Fig. 19
1 Pump suction
2 Filter
3 Pump
4 Pressure governor
5 Return pipe
6 By-pass screw
7 Pump return
8 Safety solenoid
9 1st stage valve
10 2nd stage valve
11 Filter
M Pressure gauge
V Vacuometer
Fig. 19
20
GB
A
5
8
4
5
D11079
L (meters)
ø 8 mm ø 10 mm
71 138
62 122
53 106
44 90
40 82
1
2
3
Fig. 18
ø 12 mm
150
150
150
150
150
Tab. J