Ferroli SUN G10 2S Instrucciones De Uso, Instalación Y Mantenimiento página 23

SUN G10 2S
C
fig. 3c
D
Connection to the pump
The burner leaves the factory with the internal pump bypass
closed, that is, the burner is fitted for two-pipe connection.
Remove the caps and connect the two flexible pipes to the
pump inlet (1) and return (2), as shown in Figure 4, making
sure the flexible pipes are not twisted and that they are
positioned so that they will not be stepped on or come into
contact with the hot parts of the boiler.
If the internal pump bypass needs to be used for single-pipe
connections, remove the bypass screw (10) and cap the
return fitting (2) on the pump, connecting only the flexible
pipe to the inlet fitting (1).
If the pump is operated with the return closed
and the bypass screw inserted, it will be dama-
ged immediately.
Key
1 Suction
2 Return with internal by-pass screw
3 Delivery to nozzle
4 1st stage pump pressure adjustment
5 Pressure gauge connections
6 Vacuum gauge connection
7 2nd stage pump pressure adjustment
8 2nd stage coil
9 1st stage coil
10 By-pass screw
11 Nozzle
Nota: for each curve or gate valve, add 0.25 metres
to the length of the pipe (pressure drop).
L Total length of the inlet pipe, including the vertical
sections
H Difference in height
Øi Internal diameter of pipes
P Auxiliary pump
fig. 3d
fig 4
Cod. 35445523 - 02/2007 (Rev. 00)
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