Single Line (Gravity Feed); Two Line (Lift System) - Riello F3 Installation Manual

SINGLE LINE (GRAVITY FEED SYSTEM)
A) The burner is shipped configured f o r use in single line applications. No changes to the oil pump are required
for use in single line applications.
NOTE: If the pump cover (1) is removed for any reason, be sure the O-ring (2), is properly seated in the pump
cover (1) before re-attaching the pump cover to the pump housing.
SINGLE LINE SYSTEM -PIPE LENGTHS
H 3/8" OD
FT M FT
1.5 0.5 33
3.0 1.0 65
5.0 1.5 130
6.5 2.0 195
B) Connect the pipe connector to the SUPPLY PORT(5)
of the pump. Attach the NPT adapter to the pipe
connector. Attach the required piping to this pipe
adapter. Be sure that the plug in the RETURN PORT
(7) is tightened securely.

TWO LINE (LIFT SYSTEM)

2 LINE (LIFT) SYSTEM-PIPE
LENGTHS
H 3/8" OD
FT M FT
0.0 0.0 115
1.5 0.5 100
3.0 1.0 80
5.0 1.5 65
6.5 2.0 50
9.5 3.0 25
11 3.5 20
A) If a two-line system is required, install the By-pass plug
provided. The by-pass plug is installed in the return port
of the pump. A 2.5-mm hexagonal key provided with
the by-pass plug is to be used to install the plug. DO
NOT use an Imperial size hexagonal key; damage to the
by-pass plug may result. When operating on a two-line
system, supply and return lines should be the same
diameter and both should extend to the same depth
inside the fuel tank. Be sure there are no air leaks or
blockages in the piping system. Any obstructions in the
return line will cause failure of the pump shaft seal. Do not
exceed the pipe lengths indicated in the tables above.
C6501010 STANDARD F3-5 MANUAL Rev. 3-2 10/12/2006
1/2" OD
M FT M
10 65 20
20 130 40
40 260 80
60 325 100
1/2" OD
M FT M
35 330 100
30 330 100
25 330 100
20 295 90
15 230 70
8 100 30
6 65 20
P
H
NOTE: Do not exceed pipe lengths indicated in
chart.
H
NOTE: Do not exceed pipe lengths indicated in
chart.
P
H
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