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Correct method

1

  Before commencing, check for underground pipes and ensure 

excavation work does not infringe on the weight bearing 
capacity of adjacent structures.

  Excavate the hole in depth to allow for 50-75 mm of bedding 

material and a maximum depth of 1/3 of the tank wall height. 
Excavate the hole in diameter to allow for a 150-200 mm gap 
between the tank wall and the surrounding soil.

  The site is not suitable if there is water seepage or if the floor 

of the hole is unstable. Spread washed river sand into the hole 
and compact it with a plate compactor, to provide a firm level 
base. Check that no rocks, roots or sharp objects penetrate 
the sand base.

2

  Tank must be lowered into the hole squarely by crane.  

(Crane hire at purchaser’s expense).

3

  Prior to starting to backfill, the tank must be filled with  

water to a level marginally above ground height. The soil  
taken from the hole must not be used as the backfill under  
any circumstances.

  Spread a 200-300 mm layer of sand around the base of the 

tank. Manually compact the sand ensuring that all the voids 
are filled. Continue adding the sand in 200-300 mm layers, 
ensuring each time that it is well compacted into all areas 
until it comes to within 150 mm of the surface. Restore the 
remaining 150 mm with fresh soil. 
 

Continue on right under above ground siting step 4.

Tank model

Persons required to lift tank

TSL220

1

plus driver

TSL230

1

plus driver

T350

1

plus driver

TSL440

3

plus driver

T500

3

plus driver

TT560

1

plus driver

TSL660

3

plus driver

TT650

1

plus driver

TS910

1

plus driver

TT1100

1

plus driver

TS2200

2

plus driver

TT2300

2

plus driver

T3300

2

plus driver

TS5000

3

plus driver

TT5300

3

plus driver

TS5500

3

plus driver

T6500

4

plus driver

T8400

5

plus driver

T10500

6

plus driver

Tank CannoT Be unloaded wiThouT  

required aSSiSTanCe.

4

  Water Inlet – Water should be directed into tank through the strainer. Fixed inlets must be supported and 

have flexible hose fitted (similar to outlet instructions). Inlet pipe must be supported by stand.

5

  Water Outlet – Connect your outlet with flexible hose 300 mm (12”) in length. The hose must be placed 

between the valve and all other plumbing or rigid pipe work. Elbow fittings must be used as shown below. 

(Also see photo on front of this guide.) Important: Water capacity of the inlet must equal water capacity 

 

of the overflow eg 2 x 100 mm (4”) inlets = same capacity overflow.

6

  Water Outlet – Overflow – Connect overflow. Water must be piped away from the tank.

Tank Installation – Above 
ground sitting on pad

Tank Installation – Above 
ground sitting on tank stand

Tank Installation  
– In ground sitting 

CONCRETE

CRUSHER DUST 
OR SAND

Inlet pipe weight 
supported by 
holding bracket

Supported 
by stand

Overflow must be piped 
away from base to 
prevent undermining.

Outlet

      Valve

Boxing 
beams

Support

Poly Pipe

Base diameter must be 
at least 300mm wider 
than the tank.

50-75mm (2-3”) of 
sand or crusher dust 
or concrete pad.

IF THESE STEPS ARE NOT FOLLOWED GUARANTEE IS NULL AND VOID

300mm (12”) 
flexible hose

*Elbow fittings

Solid Walls

Pick up foot valve for 
water supple to shed 
or house

Back fill with washed 
bedding sand

IF THESE STEPS ARE NOT FOLLOWED GUARANTEE IS NULL AND VOID

300mm (12”) 
flexible hose

Poly Pipe

150mm (6”) of sand 
between tank and wall, 
sand then compacted

CRANE

50-75mm (2-3”) of 
compacted sand or 
crusher dust

DO NOT LIFT TANK 
WITH WATER INSIDE

GROUND

On-site delivery

  Check that you are prepared

 

for our driver to position tank, 
drill outlets and fit taps and 
seals. 

(Tank Fitting)

  There 

must be

 suitable and 

safe access as per 

Preparing 

for Delivery

 in this document.

  Site 

must be

 prepared as per 

instructions.

  There 

must be

 enough people 

present to assist with tank 
positioning, see table left.

  I am organised to instruct 

driver about outlet positions. 
(See diagram below)

  Water is immediately available 

to put 25 mm in tank to prevent 
blow-away.

Roll-off delivery

 

Check that

  There 

must be

 suitable and 

safe access as per Preparing 
for Delivery in this document.

 

There 

must be

 enough people 

present to assist with tank 
positioning, see table left.

 

Water is immediately available 
to put 25 mm in tank to prevent 
blow-away.

 

I note instructions for 

tank 

fitting

 for 

roll-off

 Delivery  

on page opposite.

Outlet position

Centre of outlet should be at  
a height of 115mm to ensure  
proper sealing.

Above ground sitting

In ground sitting

115mm

FREECALL – 1800 00 88 88 

SA 

[email protected]   

NSW 

[email protected]   

VIC 

[email protected]   

QLD 

[email protected]

CONCRETE

CRUSHER DUST 
OR SAND

Inlet pipe weight 
supported by 
holding bracket

Supported 
by stand

Correct method

1

  Prepare a reinforced concrete pad that is level and 

at least 300 mm wider than the diameter of tank.

  OR
  Prepare an earth ring at least 300 mm wider than 

the diameter of the tank so that no part of the tank 
is bearing on the wall. Fill is to be consolidated fill 
with 50–75 mm (2–3”) of sand or crusher dust on 
top surface.

2

  Tank is rolled into position. (If positioning requires 

a crane this must be at purchaser’s expense).

3

  Tank must be tied down to prevent blow-away.

Correct method

1

  Prepare a stand that has hardwood decking with 

gaps no greater than 25 mm (1”). Decking should 
be supported structurally by bearers strong 
enough to prevent sagging of decking when tank  
is full.

2

  Tank must be lifted into place by crane.  

(Crane hire at purchaser’s expense).

3

  Tank must then be tied down to the tank stand to 

prevent being blown away.

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