Graf Garden Comfort Platin 1500 L User manual

Document No. Graf-0004 Rev. 1
INSTALLATION MANUAL
The Platin tank Garden Comfort system
Rainwater Harvesting

. GENERAL NOTES
Graf UK Ltd

GENERAL NOTES
1.1 Safety
The relevant accident prevention regulations must be
observed during all work.
The relevant regulations and standards must
additionally be taken into consideration during
installation, assembly, servicing, repair, etc.
The system or individual parts of the system must be
installed by qualified specialists.
During all work on the system or parts of the system,
the entire system must always be rendered inoperable
and secured to prevent unauthorised reactivation.
Except in the event of work carried out in the tank, the
cover of the tank must always be kept sealed, as this
otherwise constitutes a maximum risk of accident. Only
original GRAF covers or covers approved in writing by
GRAF must be used.
GRAF oers an extensive range of accessories, all of
which are designed to match each other and which
can be extended to form complete systems. The use
of accessories that have not been approved by GRAF
results in the exclusion of the warranty/guarantee.
1.2 Identification obligation - Regulation
The water in these systems is not suitable for
consumption or personal hygiene.
All pipe work and outlets of the water systems are
to be labelled with the words “Not drinking water”
either in words or graphically. British Standard BS EN
16941-1:2018) so that after years of use, an accidental
connection to the drinking water system is prevented.
Even when correctly labelled it may possibly be
mistaken, for example by children. For this reason, all
the outlets of the systems process water must be fitted
with child safe valves.
1

. TECHNICAL DATA
Graf UK Ltd 
TECHNICAL DATA
2
2.1 Technical Data Platin
(1500 L, 3000 L, 5000 L, 7500 L)
Tank 1500 litres 3000 litres 5000 litres 7500 litres
Weight 82 kg 180 kg 250 kg 380 kg
L2100 mm 2450 mm 2890 mm 3600 mm
W1250 mm 2100 mm 2300 mm 2250 mm
H700 mm 735 mm 1000 mm 1250 mm
Htot* 1015 mm 1050 mm 1315 mm 1565 mm
* Htot = total height (without telescopic dome shaft)
2.2 Overview tanks Platin
(1500 L, 3000 L, 5000 L, 7500 L)

. INSTALLATION & ASSEMBLY
Graf UK Ltd
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1. Subsoil
2. Telescopic dome shaft
3. Compact foundation
4. Surrounding (round-grained gravel, maximum grain size 8/16)
5. Covering layer
6. Platin Rainwater Underground Tank
7. Concrete layer for surfaces used by passenger cars
ß––> DIN 4124 from 1250mm depth of the trench
1 4 7
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INSTALLATION & ASSEMBLY
3
3.1 Construction site
Under all circumstances, the following points must be clarified prior to installation:
• The structural suitability of the ground according to DIN 18196
• Maximum groundwater levels which occur and drainage capability of the subsoil
• Types of load which occur, e.g. trac loads
• Please note: HGV can only be driven over if a self-supporting, steel-reinforced concrete plate is installed!
An expert ground report should be requested from the local planning authority to determine the physical
characteristics of the subsoil.
3.2 Trench
To ensure that sucient space is available for working, the base area of the trench must exceed the dimensions of
the tank by > 100 mm on each side; the distance from solid constructions must be at least 1000 mm.
If the depth of the trench is> 1250 mm an embankment must be designed according to DIN 4124. The construction
site must be horizontal and plane and must guarantee sucient load-bearing capacity.
The depth of the trench must be dimensioned so that the max. earth coverage (see point 2 - installation conditions)
above the tank is not exceeded. To use the system throughout the entire year, it is necessary to install the tank and
those parts of the system which conduct water in the frost-free area. The frost-free depth is usually approx. 600 mm -
800 mm; precise information in this regard can be obtained from the responsible authority.
A layer of compacted, round-grain gravel (grain size 8/16, thickness approx. 100 - 150 mm) is applied as the
foundation.
3.3.2

. INSTALLATION & ASSEMBLY
Graf UK Ltd 
INSTALLATION & ASSEMBLY
3.3.1 Standard installation overview
Coverage heights with telescopic dome shaft in green
areas.
3.3.2 Maximum cover permitted over tank
Maximum coverage heights with extension and
telescopic dome shaft.
(in green areas only- not under passable areas)
3.3.3 Slope, embankment, etc.
On installation of the tank in the immediate vicinity
(< 5 m) of a slope, earthen mound or slope, a statically
calculated supporting wall must be erected to absorb
the soil pressure. The wall must exceed the dimensions
of the tank by at least 500 mm in all directions, and
must be located at least 1000 mm away from the tank.
Attention: When positioning the upper half shell, it
must be ensured, under all circumstances, that the seal
does not slip out of the groove.
3.3.4 Groundwater and cohesive
(water-impermeable) soils (e.g. clay soil)
If it is anticipated that the tanks will be immersed
deeper into the groundwater than is shown in the
adjacent figure, sucient dissipation must be ensured.
(See table for max. immersion depth).
Dissipation of the drainage water (e.g. via an annular
drainage system) is recommended in the case of
cohesive, water-impermeable soils.
3
Tank 1500 litres 3000 litres 5000 litres 7500 litres
Immersion depth 700 mm 735 mm 1000 mm 1250 mm

. INSTALLATION & ASSEMBLY
Graf UK Ltd
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3.3.5 Installation below light duty vehicle
surfaces
Cover heights with cast iron telescopic dome shaft
{class B) in area driven over by vehicles up to 3.5
tonnes.
(without groundwater and stratum water)
3.3.6 Installation below HGV-bearing
surfaces
The shaft can only be driven over with HGV in
conjunction with a self-supporting, iron-reinforced
concrete plate. To ensure that no additional forces or
eects of HGV-bearing are transferred to the tanks, the
dimensions and strength of the concrete plate must be
statically calculated.
If you have any questions in this regard, please contact
your GRAF-Team.
3.3.7 Installation adjacent to surfaces used
by vehicles
If the underground tanks are installed adjacent to
surfaces which are used by heavy vehicles weighing
over 3,5 t, the minimum distance away from these
surfaces is at least the depth of the trench.
3INSTALLATION & ASSEMBLY
3.3.8 Connection of several tanks
Two or more tanks are connected via the assembly
surfaces by means of GRAF special seals and basic
pipes (to be provided at construction site).
The apertures must be drilled to the corresponding size using only the GRAF special crown bit. It must be ensured
that the distance between the tanks is at least 500 mm. The pipes must pmiect at least 200 mm into the tanks.

. INSTALLATION & ASSEMBLY
Graf UK Ltd 
INSTALLATION & ASSEMBLY
3.4 Insertion and filling
The tanks must be inserted, impact-free, into the
prepared trench using suitable equipment. To avoid
deformities, the tank is filled 1/3 with water before
filling in the tank surrounding.
Afterwards the surrounding (roundgrain gravel, max.
grain size 8/ 16) is then filled in layers of max. 30 cm
steps and is compacted.
The individual layers as well as the medial support
column must be well- ‘·· compacted (manuel
tamper). Damage to the tank must be avoided during
compaction. Mechanical compaction machines must
not be used under any circumstances. The surrounding
towards the trench must be at least 100 mm wide.
3.5 Routing connections
All feed and overflow pipes must be routed with a
decline of at least 1 % in the direction of flow (possible,
subsequent settling must be taken into consideration
in this case). If the tank overflow is connected to a
public sewer, this must be protected against reflux by
means of a lifting station (mixed sewer) or reflux seal
(pure rainwater sewer) according to DIN 1986.
All suction, pressure and control lines must be routed
in an empty pipe, which must be routed as straight as
possible, without bending, to the tank with a decline.
Necessary bends must be formed using 30° moulded
sections.
Important: The empty pipe must be connected to an
aperture above the max. water level.
3
Drainage
solution

. ASSEMBLING THE TELESCOPIC DOME SHAFT
Graf UK Ltd

4.1 Assembling the telescopic dome shaft
The telescopic dome shaft enables infinite adaptation
of the tank to given site surfaces with earth coverage of
between 455 mm and 655 mm (Mini telescopic dome shaft)
or 455 mm and 755 mm (Maxi telescopic dome shaft).
For assembly purposes, the enclosed profile seal (material
EPDM) is inserted into the tank dome’s sealing groove and
is coated generously with soft soap (do not use mineral oil-
based lubricants, as these attack the seal). The telescope is
then greased, inserted and aligned with the surface of the
site.
4.2 Telescopic dome shaft on which persons may
walk
Important: To prevent loads from being transferred onto
the tank, round-grain gravel (max. grain size 8/ 16) is
filled in in layers around the telescope and is evenly
compacted. Damage to the tank dome and telescope
must be avoided during this step. The cover is then
positioned and is sealed to prevent entry by children.
Tighten the threaded connection on the cover so tightly
that it cannot be opened by a child!
4.3 Telescopic dome shaft over which passenger
cars may drive
If the tank is installed under areas used by passenger
cars, the collar area of the telescope (colour anthracite)
must be supported with concrete (load class B25 = 250
kg/ m2). The layer of concrete to be installed must be at
least 300 mm wide and approx. 200 mm high all around.
The permitted coverage above the shoulder of the tank
is min. 700 mm and max. 1000 mm. There are dierent
possibilities for lengthening the tank dome (315 mm):
telescopic dome shaft with cast iron lid or Begu (max.
eective length 440 mm) as well as the dapter (max.
eective length 300 mm).
Attention: Use the cast cover under all circumstances.
4.4 Telescopic dome shaft for HGV loading
When installing below surfaces driven on by HGVs, the
telescope is lined as described in 7.3. The concrete rings
(diameter 600 mm) and a cast frame with star-shaped
load distribution are then installed to support the cast
cover. The cast frame must have a contact area of approx. 1
m2. To extend the shaft, the telescopic dome shaft for HGV
loading with class D cover, provided by the customer (max.
useful length 440 mm), and the spacer (max. useful length
300 mm) can be used.
Please note: Can only be driven over with HGV, if a self-
supporting, steel-reinforced concrete plate is installed.
4ASSEMBLING THE TELESCOPIC DOME SHAFT
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. ASSEMBLING THE TELESCOPIC DOME SHAFT
Graf UK Ltd 
ASSEMBLING OF THE TELESCOPIC DOME SHAFT
4.5 Assembling the extension
For larger coverage heights an extension is needed.
To insert the extension into the tank dome, soft soap
is needed. Into the highest groove of the extension
the profile seal is inserted an greased generously.
Afterwards push the telescopic dome shaft into the
extension and adapt it to the planned area surface.
1 Extension = max. earth-cover 955 mm respectively
1055 mm (in connection with Mini respectively Maxi
telescopic dome shaft)
Telescopic dome shaft (can be inclined by 5°)
Extension
Profile seal
Tank dome Platin
4
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. PLATIN GARDEN COMFORT PACKAGE
Graf UK Ltd
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5.1 Scope of supply
Underground tank (choice of tanks available, sizes
vary according to property type)
Telescopic lid (choice of telescopic lid available,
depending on tank location)
Filter (Basket filter supplied in accordance with type
of tank)
Submersible pump with floating water intake
Internal hose connection box
External hose connection box
5.2 Supplied by others
100mm diameter duct pipe to contain; power cable
for pump
100mm diameter drainage pipe connected from
downpipes to the inlet at the top of the tank (all
downpipes brought into one pipe for connection to
the filter)
100mm diameter pipe for overflow from the tank to
mains drainage network or soakaway
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5
Ground
Fused Spur
13amp, 220-240V supply
(provided by others)
Power cable for the submersible
pump installed within a
50/100mm diameter electrical
service duct
External Hose Connection Box
for rainwater extraction (optional)
Internal Hose Connection Box
for rainwater extraction (optional)
Hanging Basket Filter
Skimming Overflow
To soakaway
Rainwater level
Submersible pump
Below ground Rainwater
Harvesting Tank
Junction Box
(provided by others)
First
RWP inlet pipe
5.3 Rainwater storage tank Carat / external hose connection box

Graf UK Ltd 
. GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
[e-mail]
www.graf.info
8 / 18
1. General notes
1.1 Security
The relevant accident prevention regulations according to BGV C22 must be observed during all work.
Particularly when walking on the tanks, a 2nd person is required to secure the tank.
The relevant regulations and standards must additionally be taken into consideration during installation,
assembly, servicing, repair, etc. Relevant notes can be found in the corresponding sections of these
instructions.
During all work on the system or parts of the system, the entire system must always be rendered
inoperable and secured to prevent unauthorised reactivation.
GRAF offers an extensive range of accessories, all of which are designed to match each other and which
can be extended to form complete systems. The use of other accessories may lead to impediments to the
system's functional capability, therefore invalidating liability for resulting damage.
1.2 Identification obligation
The water in these systems is not suitable for consumption or personal hygiene.
Not drinking water
either in words or graphically (German norm DIN 1988 Part 2, paragraph 3.3.2.) so that after years of use,
an accidental connection to the drinking water system is prevented. Even when correctly labelled it may
possibly be mistaken, for example by children. For this reason, all the outlets of the systems process
water must be fitted with child safe valves.
2. Scope of supply main components
x Submerged and suction pump Integra INOX
x Floating water extraction unit
x Water plug socket
Version Extern / Version Intern
x Pressure hose 10 m
[e-mail]
www.graf.info
8 / 18
1. General notes
1.1 Security
The relevant accident prevention regulations according to BGV C22 must be observed during all work.
Particularly when walking on the tanks, a 2nd person is required to secure the tank.
The relevant regulations and standards must additionally be taken into consideration during installation,
assembly, servicing, repair, etc. Relevant notes can be found in the corresponding sections of these
instructions.
During all work on the system or parts of the system, the entire system must always be rendered
inoperable and secured to prevent unauthorised reactivation.
GRAF offers an extensive range of accessories, all of which are designed to match each other and which
can be extended to form complete systems. The use of other accessories may lead to impediments to the
system's functional capability, therefore invalidating liability for resulting damage.
1.2 Identification obligation
The water in these systems is not suitable for consumption or personal hygiene.
Not drinking water
either in words or graphically (German norm DIN 1988 Part 2, paragraph 3.3.2.) so that after years of use,
an accidental connection to the drinking water system is prevented. Even when correctly labelled it may
possibly be mistaken, for example by children. For this reason, all the outlets of the systems process
water must be fitted with child safe valves.
2. Scope of supply main components
x Submerged and suction pump Integra INOX
x Floating water extraction unit
x Water plug socket
Version Extern / Version Intern
x Pressure hose 10 m
6GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
Submerged and suction pump
Floating water extraction unit
Water plug socket - Version Extern / Version Intern
25m roll of HDPE pipe, 25mm diameter, black/green, labelled as Rainwater
6.2 Rainwater storage tank Platin / set up of internal and external hose connection box
Caution: The distance between the external hose connection box and the underground tank is limited by the pressure hose
– length of the pressure hose is  m. This is the standard length in the supply, more hose can be supplied on request.
1. Submersible pump
2. Brass hose screwing
3. Hose clip
4. Suction hose
5. Floating suction set
6. mm compression elbow (optional fitting used for
external tap connection
7. Fixing set for submersible pump
8. Pressure hose, black & green colour,
length  m
9. Electricity supply, length  m, 3-core cable
10. Water plug socket external
11. 3/4” tank connector
12. -way regulating plug
13. Hose-lock connector
14. Internal hose connection box, located on manhole
cover of rainwater tank
15. mm compression T-fitting
16. mm compression x 3/4” female threaded fitting
17. mm compression x ” male threaded fitting
18. m length of braided hose, 3/4” male x 3/4” female
connections
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6.1 Scope of supply main components

Graf UK Ltd

. GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
6GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
  
  
6.3 Installation of internal hose connection box

Graf UK Ltd 
. GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
6GARDEN SUBMERGE SET  INSTALLATION OF TECHNICAL PARTS
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6.3 Installation of internal hose connection box (continued)

Graf UK Ltd
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Ø410
100175
327
139
. TECHNICAL DATA  UNIVERSAL FITTED FILTER STRAINER
7TECHNICAL DATA  UNIVERSAL INTERNAL FITTED FILTER STRAINER
7.1 Universal internal fitted filter strainer
• The filter is suited to installation in a pilot shaft or cistern.
• The dierence in height between inlet and outlet is around 100 mm.
• The filter must not be installed in the ground itself.
• The filter is suited to roof surfaces of up to around 200 m2.
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7.2 Filter preparation
Before being installed in the tank, the enclosed chain suspension must be secured to the filter strainer
using the three S-shaped hooks supplied and shortened to the assembly length required.

Graf UK Ltd 
. TECHNICAL DATA  UNIVERSAL FITTED FILTER STRAINER
7.3 Preparation on the tank
The overflow siphon  is inserted (passing from the inside out) in the bottommost tank dome seal. The DN 100
supply pipe (provided by the customer) is fitted to one of the top holes, this involves guiding in the pipe (working
from the outside in) which must protrude at least around 100mm into the filter strainer.
1
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7.4 Installing the filter
The stainless steel cross bar supplied is set to the diameter of the telescopic dome shaft (min. 570 mm / max.
690 mm) and then attached to the shaft’s collar. The prepared filter is then guided through the tank dome from
above, slid onto the supply pipe, which is protruding at least 100 mm, and fitted in the cross bar using the previously
adjusted chain suspension .
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7TECHNICAL DATA  UNIVERSAL INTERNAL FITTED FILTER STRAINER CONTINUED
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Graf UK Ltd
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. COMMISSIONING & SERVICE
8COMMISSIONING & SERVICE
Before commissioning and at every inspection, the lifting out mechanism must be positioned at 90° to the inlet so
that no large objects such as leaves and twigs can catch on the handle. The straining filter is re-moved for cleaning
and the basket must be thoroughly cleaned with water until all the pores are open. It is advised to clean every 4 to 5
weeks (more often in autumn due to more leaves and twigs) or according to requirements.
The filter strainer basket must be lightly pressed into place taking care that the seal sits precisely after every
cleaning.
At the occasion of each inspection, the overflow siphon must be checked and flushed in necessary.

Graf UK Ltd 
. COMMISSIONING & SERVICE. INSTALLATION & MAINTENANCE INSTRUCTIONS FOR THE GRAF RAINWATER HARVESTING SYSTEM
9INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR THE GRAF RAINWATER
HARVESTING SYSTEM
The system must be checked for leaks, cleanliness and stability at least every year.
The entire system should be serviced at intervals of approx. 5 years. In this case, all parts of the system must be
cleaned and their function checked. Servicing should be carried out as follows:
• Drain the tank completely
• Clean surfaces and internal parts with water
• Remove all dirt from the tank
• Check that all internal parts are firmly seated.
The points described in these instructions must be observed under all
circumstances. All warranty rights are invalidated in the event of non-observance.
Separate installation instructions are enclosed in the transportation packaging for
all additional articles purchased from GRAF.
The components must be checked for any damage prior to installation under all
circumstances.
Missing instructions can be downloaded on www.graf.info or can be requested
from GRAF.

Graf UK Ltd

15 NOTES
. NOTES

Graf UK Ltd 
. NOTES
15 NOTES

Graf UK Ltd
Regen House
Beaumont Road
Banbury
Oxfordshire OX16 1RH
T: 01608 661500
F: 01295 211333
E: [email protected]
www.grafuk.co.uk
Graf UK Ltd (Scotland)
220 Blairtummock Road
Queenslie Industrial Estate
Glasgow
G33 4ED
T: 0141 465 1540
F: 01295 211333
E: [email protected]
www.grafuk.co.uk
RAINWATER HARVESTING
WASTEWATER MANAGEMENT
STORMWATER MANAGEMENT
WATER BUTTS & COMPOSTERS
MULTIPURPOSE CONTAINERS