Hydraulic Connection - Wilo -RAIN3 Einbau- Und Betriebsanleitung

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7.4

Hydraulic connection

40
Installation
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.
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:
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The rainwater suction pipe (G1'') (Fig. 3-4, rep. 8) to the rainwater storage tank. The
pipe should have a diameter of 25 mm. The maximum suction head of the pump
should take into account the head losses.
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The discharge pipe (G1'') for the supply of rainwater (Fig. 4, rep. 7).
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The city main water pipe (G3/4'') (Fig. 3-4, rep. 4).
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The overflow pipe (Ø19) (Fig. 3-4, rep. 9).
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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 (see chapter 7.5).
The connection with the control panel is done by a Quickon connector.
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Join the connection plug (rep. 1-4) to the connection line and screw it onto the con-
trol box (see chapter 7.5).
NOTICE
It is possible to extend the level sensor connection line if so desired. The total length
of the connection line should however not exceed 40m. For the extension, use cable
suitable for the local conditions (possibly an underground cable with a cross sec-
tional area of at least 2 x 0,5mm
used for measuring the current air pressure and must therefore always be in con-
tact with the atmosphere. It isn't necessary to extend it to the control box.
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.
2
). The hose in the level sensor connection line is
WILO SE 2020-02