StormBank Garden0 pages

StormBank® Garden Installation
stormwater
Cont ...
Embedding the Tank
1)t Excavate to the appropriate dimensions, allowing for
a 150 mm bed of sand at the base.
2)t Lower the tank carefully into the excavation onto the
sand base.
3)t Fill the tank 2⁄3 with water, then backfill around the tank
with sand in layers of 30 cm and compact each layer
by hand. Ensure the tank is evenly hand compacted
on all sides.
4)t Fill the tank with water to the overflow level and
continue to back fill with sand and hand compact to
the overflow level.
5)t Make the push fit connections with 110 mm watertight
pipework. The service duct should be run to the
surface connection point, with a pull through cord
left in.
6)t Place the tank access cover onto the tank.
7)t Fill the excavation to finished levels with topsoil.
8)t Leave the water in the tank until installing the pump.
StormBank® Garden User Manual
Topsoil
Fill with
Water Prior
to
Backfill
Backfill with Sand in 300 mm
Steps, Hand Compacted
150 mm
Sand Base
Note:
A)tt In heavy clay soils, rainfall might permeate around the installation, but not drain away through the surrounding
earth. This can collect below the tank and could cause buoyancy, particularly if the tank is left empty. In poor soil
it is recommended that a concrete base is formed, with straps used to permanently hold the tank. Please contact
Hydro for further information.
B)tt Any downpipes from the roof should run directly into the ground, without using a grille or gully, as these could
allow grit and debris to be swept into the StormBank® tank. Paved and concreted areas should be drained
separately to the roof - water from these areas is not suitable for your StormBank® system.
StormBank® Garden
Installing the Pump
1)ttt
Using PTFE tape, screw in the larger 1”- 20 mm hose insert to the threaded hole on top of the pump.
2)ttt
Screw the plastic inlet filter on to the end of the pump.
3)ttt the lifting rope supplied through the handle on top of the pump.
Tie
4)ttt
Connect one end of the hose to the hose insert, and secure using two jubilee clips.
5)ttt the pull through cord to the end of the hose.
Tie
6)ttt
Carefully lower the pump into position on the base of the tank.
7)ttt
Pull the hose through the duct to the surface.
8)ttt
Screw the smaller 3/4”- 20 mm hose insert into the connection point, including the sealing washer.
9)ttt necessary trim the hose, and connect it to the connection point hose insert, again using two jubilee clips to secure.
If
10)ttt
Use expanding foam or other sealant to close off the duct ready for backfill.
11)ttt
Backfill around the connection point in the desired position.
Rainwater Harvesting System
Hydro International offer a free design advice service. Please contact us with details of your project
and situation.
Stormwater Hotline: 01275 337977 • enquiries@hydro-international.co.uk
Hydro International • Stormwater Division
Shearwater House • Clevedon Hall Estate • Victoria Road • Clevedon • BS21 7RD
Tel: 01275 878371 • Fax: 01275 874979
© 2009 Hydro International. All rights reserved.
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