21
20034293
GB
Installation
5.14
Hydraulic connections
The pumps are equipped with a by-pass that connects return line
and suction line. The pumps are installed on the burner with the
by-pass closed by screw 6)(Fig. 19).
It is therefore necessary to connect both hoses to the pump.
The pump will break immediately if it is run with the return line
closed and the by-pass screw inserted.
Remove the plugs from the suction and return connections
of the pump.
Insert the hose connections with the supplied seals into the
connections and screw them down.
Take care that the hoses are not stretched or twisted during
installation.
Install the hoses where they cannot be stepped on or come
into contact with hot surfaces of the boiler and where they do
not hamper the opening of the burner.
Now connect the other end of the hoses to the suction and
return lines by using the supplied nipples.
5.15
Pump
Technical data
Tab. M
Key Fig. 21
1
Suction
G 1/2”
2
Return
G 1/2”
3
Pressure gauge attachment
G 1/8”
4
Vacuum meter attachment
G 1/2”
5
Pressure adjustment screw
6
By-pass screw
Fig. 20
D3176
WARNING
In case of use with gas oil containing up to 10%
Bio blend, it will be essential to use flexible oil
lines suitable for bio fuel use.
Please contact Riello for further information.
Suntec E7CC
Min. delivery rate at 12 bar pressure
kg/h
230
Delivery pressure range
bar
10 - 30
Max. suction depression
bar
0.45
Viscosity range
mm
2
/s (cSt)
3 - 75
Max. gas oil temperature
°C
90
Max. suction and return pressure
bar
1.5
Pressure calibration in the factory
bar
12
Filter mesh width
mm
0.17
Fig. 21
D1251
Summary of Contents for RLS 250/M
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