4rain FLAT S Notice D'installation Et D'entretien page 44

5.4 Connecting multiple tanks
5.4.1 FLAT
Multiple tanks are interconnected by means of the
connecting set and DN 50 HT pipes. The connect-
ing set contains 4 × DN 50 special seal, 4 × DN 50
HT pipe, a lubricant, and a core drill 58 mm in di-
ameter.
Each tank is interconnected via the drill holes at
the top and bottom of the tanks (see
Fig. 25). The openings for these connections must
be made with a core drill 58 mm in diameter. The
openings take the DN 50 special seals. Lubricant
should be applied to the seal and the end of the
pipes: they can then slide more easily over each
other.
Once in the pit, the tanks can be interconnected
along their lengths or widths.
The respective distances must be observed (L ≥
100 mm, W ≥ 0 mm).
The connecting pipes may not be shortened and
must project by at least 100 mm into the tanks.
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5 Installation and assembly
Fig. 25: Drill holes for interconnecting multiple tanks –
Fig. 26:Interconnecting multiple tanks – FLAT
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FLAT