Pump Purge - Riello R35 Series Installation Manual

PUMP PURGE

SINGLE LINE (Gravity Feed) SYSTEM – FIG. 13
A) Loosen the bleeder valve (3, FIG. 12) until oil flows out. Tighten the bleeder valve
securely and start burner.
B) To bleed the pump by pressure:
1) Loosen the bleeder valve (3, FIG. 12).
2) Start the burner.
3) When the valve is engaged, approximately 10 seconds after starting, remove the
photo cell (2, FIG. 10) allowing it to see false flame (light).
4) Run the burner until the fuel pump has been purged of air, and then immediately
shut down the burner.
5) Tighten the bleeder valve (3, FIG. 12) securely and re-install the photocell (2, FIG.
10).
6) The burner can now be started normally.
TWO LINE (LIFT) SYSTEM – FIG. 14
1) Remove the photocell (2, FIG. 10) allowing it to see false flame (light).
2) Start the burner (the burner will remain in pre-purge).
3) Follow procedures 4 through 6 (as per B) above for pressure bleeding a single line system.
NOTE: To protect the pump gears, it is advisable to lubricate the pump prior to purging a lift
system. Apply oil through the VACUUM GAUGE PORT (5, FIG. 12).
NOTE: Pump pressure is factory set at 145 psi unless otherwise specified by the equipment
manufacturer. The pressure should be verified at time of burner installation. Pressure and
vacuum ports are not NPT threads. Riello pressure, vacuum gauges and adapters (C7001070)
for North American style gauges are available for purchase from Riello.
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