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3.
make sure that the discharge pipe has an incline that will guarantee the normal flow of possible
discharges.
4.
Connect the discharge to the sewerage system.
5.
If the incline of the discharge pipe is insufficient, install a lifting station in order to guarantee the
discharge.
4.3 Mains water pipe connection
Proceed as follows:
1.
Connect the mains water supply pipe to the hose with the ring nut illustrated in the diagram using
the appropriate seal (see fig. 01 point 2, page 39).
2.
Check that the float valve moves freely and that it is correctly positioned within the mains water
tank (see fig .01, page 39). The float should be able to move freely and remember to replace the
lid of the tank (see drawing 6 in the attachment).
WARNING
The float valve that regulates the discharge of mains water is designed to operate at a maximum
pressure of 4 Bar and a flow rate of 10 l/min. If the mains pressure exceeds this value, fit a pressure
reducer upstream from the float valve and a mesh filter to protect it against any impurities that
endanger its operation. Excessive pressure in the mains pipe could cause the float valve inside the
system to leak or break.
Ideally an on-off valve should be fitted before the float valve so that the mains water can be turned off
in the event of breakage or malfunction, and so that maintenance can be performed in total safety.
4.4 Collection water suction pipe connection
The suction pipe must have an internal diameter of at least DN25, and must always have an incline
towards the collection tank. Before connecting it to the system, make sure that there are no air locks
and that it is clean, if necessary clean it with clean water (avoid swan necks, highest point, the suction
pipe must never pass above the pump).
Install the system as close as possible to the rain water collection tank. Use the table below in order to
ensure that the distance is not excessive, a length of 20 metres and a suction height of 3 meters
should never be exceeded in order for the pump to perform at its best.
If the length and the suction height are greater, use another pump connected in series with that of the
system in order to overcome the pump suction problem.
The point of suction must always guarantee the suction of clean water, use a suction kit and install it
as illustrated in figure 03, page 45.
Always install a filter to ensure that impurities are prevented from blocking valves and other internal
parts of the pump.
ENGLISH
45
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