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Sun G10
2.3 Fuel supply
General instructions
The burner must be supplied by the type of fuel it is set for, as shown on the rating plate on the appliance
and in the table of technical specifications in Chap. 4.3 of this manual.
The pipe supplying fuel to the burner must be perfectly sealed, to avoid air entering into the pump, must
be fitted with a filter upstream of the burner, and all the safety and control devices required by the
standards in force. There must be no impurities or processing residues inside the pipe: clean the pipes
before using.
In addition, before operating the burner, make sure that the fuel return pipe is not blocked. Excessive
backpressure will break the pump seal device.
The tank must be positioned as required by the standards in force, and must be built and installed in a
way that no water or impurities may enter. The tank must be carefully cleaned before filling with fuel.
The tank and supply pipe must be protected from frost.
Fuel circuit
The burner is fitted with a self-suction pump that can supply itself autonomously, within the limits shown
below. The fuel supply circuits can be divided into 4 types, as shown in the following figure:
A
Gravity feed
B
Suction feed
C
Siphon feed
D
Ring feed
For each type of system there is a table for sizing the supply pipe in relation to the length (L) of the inlet
pipe, and the difference in height (H) from the tank. Do not exceed the MAX distances shown in the figures
so as not to excessively stress the pump seal devices.
A
fig. 3a
B
fig. 3b
L (m)
H
(m)
Øi 8 mm. Øi 10 mm.
0.5
10
20
1.0
20
40
1.5
40
80
2.0
60
100
L (m)
H
(m)
Øi 8 mm. Øi 10 mm.
0.0
25
60
0.5
21
50
1.0
18
44
1.5
15
38
2.0
12
32
2.5
10
26
3.0
8
20
3.5
6
16
19
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