Pump Purge; Single Line (Gravity System) - Riello F3 Installation Manual

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
B) Attach the two PIPE CONNECTORS (6) to the pump SUPPLY and pump RETURN PORTS (5 and 7).
Attach the required piping to these two pipe connectors using the NPT/ METRIC ADAPTERS 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.
WARNING: The height 'P' in Pipe Length Charts should not exceed 13 feet (4 m).
WARNING: 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.
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 (C).
A) SINGLE LINE (GRAVITY FEED SYSTEM)
I. Loosen the bleeder valve (A) until oil flows out.Tighten the bleeder
valve securely and startburner.
II. When bleeding the pump by pressure:
1) Loosen the bleeder valve (A).
2) Disconnect nozzle oil supply line at the pump nozzleport (B).
3) Attach a flexible plastic tube to the pump nozzle, port directing
the oil flow into a bucket.
4) Loosen the screw(s) securing the air tube cover, allowing it to be
removed freely.
5) Holding the air tube cover in its proper location start the burner.
6) When the solenoid valve is engaged approximately 10 seconds
after starting, remove the air tube cover and shine a light source on the photocell, allowing it to see false
light.
7) Run the burner until the fuel pump has been purged of air, then tighten the bleeder valve and
immediately shut down the burner.
8) Reinstall the air tube cover and nozzle line
The burner can now be started normally
9)
WARNING: Omitting steps 2 and 3 will result in a collection of unburned oil in the combustion chamber
creating a hazardous situation upon burner startup.
C6501010 STANDARD F3-5 MANUAL Rev. 3-2 10/12/2006

PUMP PURGE

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B
V
RIELLO
P
13
C
A