6202
3
GB
3.
INSTALLATION
3.1
FUEL OIL SUPPLY SYSTEMS
GRAVITY SYSTEM
SUCTION SYSTEM
LOOP SYSTEM
(max loop system 3 bar)
Pump priming:
loosen the cap of the vacuometer fitting
(5, fig. 1) and wait for the fuel flow.
H
: Difference in height
L
: Length of the suction tube
For fuel oil with viscosity max. 7°E at 50°C.
D2720
max. 30m
H
H
metres
L metres
diam.
1” gas
diam. 1
1/4” gas
0
6
10
0,5
11
17
1
16
24
1,5
21
31
2
26
38
Not advised, to be used only if there is a
previously existing system.
Never exceed the max. vacuum of 0.5 bar
(38 cm Hg) measured at the vacuometer
fitting (5, fig. 1).
The pipes should be perfectly airtight.
When the tank is placed below of the burn-
er level, the return pipe should arrive at the
same level of the suction pipe.
In this case the foot valve is not required.
For light fuel oil with viscosity max. 7°E at 50°C.
D2721
max. 30m
H
H
H
metres
L metres
diam. 1
1/4” gas
diam. 1
1/2”
0
22
45
0.5
19
39
1
16
33
1,5
13
27
2
10
21
2.5
7
15
3
0
8
1
- Tank (properly heated for heavy oil)
5
- Transfer pump
2
- Filter (with resistor for oil > 7°E / 50°C)
6
- Manometer
3
- Burner
7
- Burner pump
4
- Air dampers for excluding burner (coupled)
8
- Pressure adjuster
For heavy oil with viscosity up to 50°E/50°C.
Notice
: to ensure proper fuel flow all the pipes have to be properly sized, insulated and heated. (elec. re-
sistor or steam or hot water).
Warning
: before starting up the burner make sure that there is no obstruction in the pipes,
any obstruction may damage the sealing of the pump.
D2631
