Oil Storage &
Supply System
11
Single Pipe System
Where the storage tank outlet is above
the burner the single pipe system
should be used. The height of the tank
above the burner limits the length of
pipe run from the tank to the burner.
As supplied the burner is suitable for a
single pipe system.
Head A Max Pipe Length (m)
(m) ø 8mm ø 10mm
0.5 10 20
12040
1.5 40 80
2 60 100
Figure 3-1: Single pipe system
Two Pipe System
With the storage tank outlet below the
burner, a two pipe system should be
used. The pipe runs should
be as shown in Figure 3-2. The return
pipe should be at the same level in the
tank as the supply pipe,
both being 75 to 100 mm above the
base of the tank. The pipe ends should
be a sufficient distance apart
so as to prevent any sediment disturbed
by the return entering the supply pipe.
Avoid the bottom of the tank being
more than 3.5m below the burner.
A non-return valve should be fitted in
the supply pipe together with the filter
and fire valve. A non return valve should
be fitted in the return pipe if the top of
the tank is above the burner.
The pump vacuum should not exceed
0.4 bar. Beyond this limit gas is released
from the oil.
For guidance on installation of top
outlet fuel tanks and suction oil
supply sizing, see OFTEC technical
book 3.
Available at www.oftec.org.uk.
Figure 3-2: Two pipe system
Head A Max Pipe Length (m)
(m) ø 8mm ø 10mm
0 35 100
0.5 30 100
1 25 100
1.5 20 90
21570
3830
3.5 6 20
Fire
valve
Fire valve sensor
Vent pipe
Fill pipe
Sludge
valve
Shut-off
valve
Shut-off
valve
Level
gauge
Filter
Fuel
storage
tank
Pump (see section 3.2)
Pump (see section 3.2)
Fire
valve
Fire
valve
sensor
Vent
pipe
Fill
pipe
Sludge
valve
Shut-off
valve
Shut-off
valve
Shut-off valve
Level gauge
Non
return
valve
Filter
Fuel
storage
tank
A
Supply
Return