Two Line (Lift System); Pump Purge; Single Line (Gravity Feed System) - Riello 40 F10 A Installation & Operating Manual

TWO LINE (LIFT SYSTEM)

A) The burner is shipped with the pump set to oper-
ate on a two line system. Suction and return lines
(7 & 11 in drawing on page 7) 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 table.
B) Attach the two PIPE CONNECTORS (6) to the
pump SUCTION and pump RETURN PORTS (7
and 11). Attach the required piping to these two
pipe connectors using the NPT/METRIC ADAPT-
ERS that are supplied with the burner.
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.

PUMP PURGE

A) SINGLE LINE (GRAVITY SYSTEM)
Remove the plug in the VACUUM PORT (A) and wait for the fuel oil to
flow out. The burner is now ready to operate.
B) TWO LINE (LIFT SYSTEM)
Turn off the main power source to the burner and remove the air tube
cover. Shine a light source on the photo cell on the control box (now vis-
ible where the air tube cover was removed), return power to the burner
and activate the burner.
With the light source in place, the burner will operate in prepurge only.
When the pump is sufficiently purged, the hydraulic air shutter will open.
Once the burner is purged, turn off the power source and replace the air
tube cover. Return power to the burner.
The burner is now ready to operate.
NOTE: To protect the pump gears, it is advisable to lubricate the pump prior to purging a lift system. Apply oil through
the VACUUM PORT (A).
ATTENTION:
It is important that the fuel line be completely sealed and free from air leaks or any internal blockages.
WARNING!
WHEN THE BYPASS PLUG IS INSTALLED, A TWO PIPE SYSTEM MUST BE USED OR FAILURE OF THE
PUMP SHAFT SEAL WILL OCCUR.
2451
2 LINE (LIFT) SYSTEM - PIPE LENGTHS
H
Feet Meters
0 0.0
1 1/2 0.5
3 1.0
5 1.5
6 1/2 2.0
9 1/2 3.0
11 3.5
ATTENTION:
do not exceed
pipe lengths
indicated in chart!
3/8" OD 1/2" OD
Feet Meters Feet Meters
115 35 330
100 30 330
80 25 330
65 20 295
50 15 230
25 8 100
20 6 65
S7457
GB
100
100
100
90
70
30
20
D6008
9