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3.
INSTALLATION
3.1
FUEL OIL SUPPLY SYSTEMS
GRAVITY SYSTEM
For light oil with viscosity max. 7°E at 50°C.
SUCTION SYSTEM
For light fuel oil with viscosity max. 7°E at 50°C.
LOOP SYSTEM (max loop pressure 3 bar)
For heavy oil with viscosity up to 20°E / 50°C.
1 - Tank (properly heated for heavy oil)
2 - Filter (with resistor for oil > 7°E / 50°C)
3 - Burner
4 - Air dampers to exclude the burner (coupled)
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.
6201
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
D2720
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-
D2721
er level, the return pipe should arrive at the
same level as the suction pipe.
In this case the foot valve is not required.
5 - Transfer pump
6 - Check Manometer
7 - Burner pump
8 - Pressure adjuster
GB
3
L metres
H
diam.
diam.
metres
3/4"
1" gas
0
5
10
0.5
8
15
1
11
20
1.5
14
25
2
17
30
L metres
H
diam.
diam.
metres
1 1/4"
1" gas
0
24
45
0.5
21
40
1
18
35
1.5
15
30
2
12
25
2.5
9
20
3
6
15
D2631
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