Two Line (Lift System) - Riello 40BF Installation & Operating Manual

GB
TWO LINE (LIFT SYSTEM) (Accessory package required)
If a two-line system is required, install the By-pass plug. The by-pass plug is installed in the return port of the pump.
A 2.5-mm hexagonal key is to be used to install the plug.
DO NOT use an inch size hexagonal key; damage to the by-pass plug may result.
A) Suction and return lines should be sized in accordance with local codes. The suction line should extend down
near the bottom of the oil tank. The return line should terminate near the top of the oil tank.
B) Suction and return lines should be sized in accordance with local codes 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 table.
Install the required fittings (NPT THREAD) in the SUCTION LINE and RETURN LINE CONNECTION FITTINGS.
Attach the required tubing to these fittings.
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
To install the by-pass plug:
1) Remove the return plug (7).
2) Install the by-pass plug (4) using the 2.5 mm hexagonal key.
3) Connect the return line connection pipe to the return port (7)
of the pump and tighten securely.
WARNING:
- Pipe dope or Teflon tapes are NOT to be used on any direct oil connection to the fuel pump.
- The height 'P' in Pipe Length Charts should not exceed 13 feet (4 m).
- The vacuum should not exceed 11.44 inches of mercury.
IMPORTANT: An external, appropriately listed and certified oil filter must be placed in the fuel line between
the fuel tank and the burner pump.
9
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
ATTENTION:
do not exceed
pipe lengths
indicated in chart!
B
A
D7524
20015900