Riello C9514300, Installation, Use And Maintenance Instructions

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Installation
21
2916050
GB
4.11.4 Pump
Technical data
Tab. L
Pump priming
The time required for this operation depends upon the diameter
and length of the suction tubing.
If the pump fails to prime at the first starting of the burner and the
burner locks out, wait approx. 15 seconds, reset the burner, and
then repeat the starting operation as often as required.
After 5 or 6 starting operations allow 2 or 3 minutes for the trans-
former to cool.
4.11.5 Oil pressure switch
The oil pressure switch 15)(Fig. 3 on page 9) is factory set to 43.5
PSI (3 bar).
If the oil pressure goes above this value in the return piping, the
pressure switch stops the burner.
Burner starts again automatically if the pressure goes down under
43.5 PSI (3 bar) after burner shut down.
If a loop circuit with Px pressure feeds the burner, the pressure
switch should be adjusted to Px + 43.5 PSI.
Key (Fig. 21)
1
Suction 1/2” NPT
2 Return 1/2” NPT
3 Pressure gauge attachment G 1/8”
4 Vacuum gauge attachment G 1/8”
5 Pressure adjustment screw
6 By-pass screw
Pump model SUNTEC J7 C
Min. delivery rate at 290 PSI pressure GPH 60.8
Delivery pressure range PSI 145 - 304.5
Max. suction pressure “Hg 13
Viscosity range cSt 2.8 - 200
Max light oil temperature °F 194 (90 °C)
Max. suction and return pressure PSI 21.8
Pressure calibration in the factory PSI 290
Filter mesh width inch 0.006
WARNING
Before starting the burner, make sure that the tank
return line is not clogged.
Obstructions in the line could cause the seal located
on the pump shaft to break.
CAUTION
The priming operation is possible because the
pump is already full of fuel when it leaves the facto-
ry.
If the pump has been drained, fill it with fuel through
the opening on the vacuum meter prior to starting;
otherwise, the pump will seize.
Whenever the length of the suction piping exceeds
66 - 98 ft, the supply line must be filled using a sep-
arate pump.
D2352
Fig. 21