Riello RLS 160/E - Hydraulic Connections; Pump; Pump Priming

20095042
26
GB
Installation
4.12.3 Hydraulic connections
The pumps are equipped with a by-pass that separates return line
with suction line (Fig. 28).
The pumps are installed on the burner with the by-pass closed by
screw 6)(Fig. 49, page 37).
It is therefore necessary to connect both hoses to the pump.
Remove the plugs from the suction and return connections of the
pump.
Insert the hose connections with the supplied seals into the con-
nections and screw them down.
Take care that the hoses are not stretched or twisted during instal-
lation.
Install the hoses where they cannot be stepped on or come into
contact with hot surfaces of the boiler.
Now connect the other end of the hoses to the suction and return
lines.
4.12.4 Pump
Legend
1 Suction 1/2" NPT
2 Return 1/2" NPT
3 Pressure gauge attachmentG 1/4"
4 Vacuum gauge attachmentG 1/4"
5 Pressure adjustment screw
6 By-pass screw
4.12.5 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.
WARNING
The pump seal will be damaged immediately if it is
run with the return line closed and the by-pass
screw inserted.
Pump model TA2
Min. delivery rate at 290 PSI pressure GPH 150
Delivery pressure range PSI 102 - 580
Max. suction pressure “Hg 13
Viscosity range cSt 4 - 800
Max. light oil temperature °F 284 (140 °C)
Max. suction and return pressure PSI 72.5
Pressure calibration in the factory PSI 360
Fig. 27
D1979
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.
WARNING
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.
Fig. 28
D10531