6193
3
GB
3.
INSTALLATION
3.1
FUEL OIL SUPPLY SYSTEMS
GRAVITY SYSTEM
SUCTION SYSTEM
LOOP SYSTEM
(max loop 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 cap of 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 viscosity max. 7°E at 50°C.
D2720
ma
x. 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. 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 as 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
1
- Tank (properly heated for heavy oil)
5
- Transfer pump
2
- Filter (with resistor for oil > 7°E / 50°C)
6
- Check Manometer
3
- Burner
7
- Burner pump
4
- Air dampers to exclude the burner (coupled)
8
- Pressure adjuster
For heavy oil with viscosity up to 20°E / 50°C.
Important note
: to let the fuel flow properly all the pipes have to be properly sized, insulated and heated
(with elec. resistor or steam or hot water).
Warning
: before to starting up the burner, make sure that there are obstructions in the pipes.
Any obstruction may damage the sealing of the pump.
D2631