Installation en
Installation and operating instructions Wilo-RAIN1 27
CAUTION
The product should be set perfectly level to work properly. Ensure that the product
is horizontal with a spirit level or an equivalent tool.
7.4 Hydraulic connection
CAUTION
Hazards due to malfunctions!
Non-compliant feed and drain couplings cause malfunctions in the installation. The
flexible hoses for feeding and draining should not, in any case, be blocked or bent
after assembly. The bending radius of the draining pipe must be higher than 60 mm.
Connect the system as described below, after mounting the system on the wall:
ƒ The rainwater suction pipe to the rainwater storage tank (Fig. 3-4, rep. 8). The pipe
should have a diameter of 25 mm. The maximum suction head of the pump should
take into account the head losses.
ƒ The connection for the distribution of rainwater (Fig. 4, rep. 16).
ƒ The city main water pipe (G3/4″) (Fig. 3-4, rep. 4).
ƒ The overflow pipe (Fig. 3-4, rep. 9).
ƒ The float switch in the rainwater storage tank (Fig. 4, rep. 5),
ƒ The rainwater level sensor (Fig. 4, rep. 5), packed separately, should be placed in the
rainwater storage tank as shown in figure 4, and the cable routed through a cable
tray to the system and connected to the control panel.
NOTICE
Note that the suction and discharge pipes can be assembled independently to the
left, the right or below the product if the installation requires it (See below).
Black arrow: suction
White arrow: discharge
4: city main water inlet (G3/4’’)
7: discharge connecting hose (G1’’ swivel nut)
8: suction connecting hose (G1’’ swivel nut)
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