6192
3
GB
3.
INSTALLATION
3.1
FUEL OIL SUPPLY SYSTEMS
GRAVITY SYSTEM
SUCTION SYSTEM
LOOP SYSTEM
(max loop system pressure 3 bar)
H
metres
L metres
Diam.
3/4”
Diam.
1” gas
0
5
10
0.5
8
15
1
11
20
1.5
14
25
2
17
30
Pump priming:
loosen the tap from the vacuometer fitting
(5, fig. 1) and wait for the fuel to flow out.
H
: Difference in height
L
: Length of the suction tube
For light oil with max. viscosity 7°E at 50°C.
D2720
max. 30m
H
H
metres
L metres
diam.
1” gas
diam. 1
1/4”
0
24
45
0.5
21
40
1
18
35
1.5
15
30
2
12
25
2.5
9
20
3
6
15
Not advised. To be used only in case of
previously existing system
.
Never exceed the max. vaccum 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 as the suction pipe.
In this case the foot valve is not required.
For light oil with max viscosity 7°E at 50°C.
D2721
max. 30m
H
H
1
- Tank (heated for heavy oil)
5
- Transfer pump
2
- Filter (with resistor for oil > 7°E / 50°C)
6
- Control manometer
3
- Burner
7
- Burner pump
4
- Burner cut-out gate valves (coupled)
8
- Pressure adjuster
For heavy oil with viscosity up to 20°E / 50°C.
Important note
: to allow the fuel to flow properly, all the pipes have to be properly sized, insulated and heat-
ed (electrically or by means of steam or hot water).
Warning
: before using the burner, make sure that there is no obstruction in the return pipe,
any obstruction may damage the sealing of the pump.
D2631
