Carat Silentio XL/XXL Domestic and Commercial Rainwater Harvesting System

Delivery: 7-10 working days

£4,947.44£10,684.14 inc VAT

The Silentio system is designed to support toilets, washing machines, garden irrigation and outside cleaning purposes. Rainwater is collected from the roof of the property and is fed into the underground tank via the downpipes. On entry to the tank, the water passes over a filter, to prevent any debris from going into the tank.

With this system, there is a pump/control unit within the property. Water is drawn from the underground tank and pumped to the required location on demand. This unit primarily works on rainwater and changes over to mains water when the rainwater in the underground tank reaches a low level. There is a mains water cistern located under the wall-mounted pump.

Mains water is taken from the cistern until the rainwater in the underground tank is replenished. As mains water is not being used to top up the underground tank, this means we maximise the amount of rainwater which can be collected. This operation is controlled via a digital level indicator located in the underground tank

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Description

Silentio Rainwater Harvesting system package, comprising of:

  • Carat XL/XXL tank 8,500 – 26,000 litres
  • Carat telescopic dome shaft Mini green, with PE-lid, for pedestrian loading, option with cast iron lid for vehicle loading
  • Carat Maxi tank dome, DN150 pipe connections
  • Carat Tank dome plug
  • Carat XL/XXL Filter Package 3 Optimax Pro Filter internal – DN150
  • Pump package House Silentio
  • 25m roll of rainwater harvesting b/g pipe, (25 mm, with fittings)

Additional information

Lid type

Pedestrian, Vehicle

Tank size (litres)

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Scope of Supply

  1. Underground tank (choice of tanks available, sizes vary according to property type)
  2. Telescopic lid (choice of telescopic lid available, depending on tank location)
  3. Maxi tank dome, DN150 pipe connections
  4. Tank Dome Plug, or 2nd maxi tank dome and telescopic lid
  5. Filter (Filter Package 3 Optimax Pro Filter internal – DN150 supplied in accordance with type of tank)
  6. Floating water intake
  7. Silentio unit
  8. Float sensor (connected from Silentio unit to the underground tank)

Supplied by Others

  1. 100mm diameter duct pipe to contain; float sensor cable, power cable for the pump, also bringing mains water to underground tank as and when required
  2. 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)
  3. 100mm diameter pipe for overflow from the tank to mains drainage network or soakaway

System Benefits

  • Simple & quick to install
  • The Silentio is a wall-mounted pump which supplies harvested rainwater on-demand to WCs, washing machines & any external taps
  • The black cistern at the top of the Silentio is filled with mains water. The water is drawn from this cistern when the rainwater in the Platin tank is low. This gives the system the main water backup.
  • Innovative float sensor detection on the Silentio unit ensures that the household is constantly supplying water to the property but only the amount necessary.
  • Maintenance and servicing of the Silentio is straightforward as the pump is located above ground where it can be easily accessed.
  • Reversible flow filter included in the Silentio package, this filter gives the system another level of filtrati0n.
  • Water level reader inside the underground tank relays an accurate reading of the amount of rainwater left in the tank.
  • Silentio package comes with a jet wash feature for the filter inside the tank which periodically removes any debris on the filter.

Product Dimensions, Levels & Weights

Carat Tank Dimensions & Weights (8500L – 26000L)

Carat 8500L Tank | Download
Carat 10000L Tank | Download
Carat 16000L Tank | Download
Carat 22000L Tank | Download
Carat 26000L Tank | Download

CARAT Garden Comfort XL Installation and maintenance instructions | Download
CARAT Garden Comfort XXL Installation and maintenance instructions | Download

CARAT Tank Levels Mini Dome | Download
CARAT Tank Levels Maxi Dome | Download

Carat XXL a New Dimension | Download

Mini & Maxi Lid Dimensions

PE Mini Lid (Pedestrian Loading 371010) | Download

PE Maxi Lid (Pedestrian Loading 371011) | Download

Cast Iron Maxi Lid (Vehicle Loading) | Download

Extension piece options


Extension Sleeve (371003) | Download


Extension Sleeve (371015) 1000mm | Download

Installation

CARAT Garden Comfort XL Installation and maintenance instructions | Download
CARAT Garden Comfort XXL Installation and maintenance instructions | Download

Carat Tank Dimensions & Weights (8500L – 26000L)

Carat 8500L  Tank | Download
Carat 10000L Tank | Download
Carat 16000L Tank | Download
Carat 22000L Tank | Download
Carat 26000L Tank | Download

Schematics

Carat Garden Comfort XL / XXL | Download
Carat Garden Indirect XL / XXL | Download
Carat Garden Direct XL / XXL | Download
Carat Garden Eco-Plus XL / XXL | Download
Carat Garden Silentio XL / XXL | Download

Brochure

Carat XXL a New Dimension | Download

CARAT Garden Comfort XL Installation and maintenance instructions | Download
CARAT Garden Comfort XXL Installation and maintenance instructions | Download

A rainwater harvesting system will cut your home's demand for drinking water by up to 50% and therefore also protect the environment. But how much time do you have to factor in for operating and maintaining such a system? GRAF rainwater harvesting systems are designed so that only very few of the components need checking. This film shows which components need maintaining and how often. The intelligent components deliver perfectly clear rainwater with minimum maintenance effort, enabling you to save drinking water and time.

Extension Pieces

(Compatible with Platin and Carat systems)

Extension Sleeve (371003) | Download

1000mm Extension Sleeve (371005) | Download

infiltration Tunnels

(Applications: Inspection & maintenance across soakaways & drainage fields)

Infiltration Tunnel | Download

One2Clean Discharging to Tunnels (Excavation Layout)| Download

Rainbloc Crates

(Applications: Surface water soakaway)

Rainbloc Specification (2020 version) | Download

New Rainbloc Instructions | Download

Distribution Shafts

(Applications: Inspection and maintenance access to soakaways and drainage fields)

Distribution Shafts Flyer | Download

Portable Water Tanks

GRAF WWT UK Brochure | Download

Wastewater Treatment Systems

GRAF One2Clean Benefit Flyer | Download

Percolation Test Guides

(Applications: Soakaways and drainage fields)

Catalogue: Portable Water Solutions | Download

Graf UK has a national service provider network of contractors who can offer various services for our rainwater harvesting & wastewater treatment systems.

See this link for UK map showing companies who can offer installation for your Graf rainwater harvesting system, just enter your postcode to highlight the companies in your area.

Setting up the pump & filter packages for the Garden Comfort systems is relatively straightforward if you follow the installation guide.

If you require assistance you can contact ‘The Rainwater Guy’, who is an accredited service provider for Graf UK for commissioning, installation of controls & maintenance of our rainwater systems.

Please note the following regarding Graf UK deliveries -

We’re still delivering to our customers safely via our own delivery vehicles & drivers in the main, using external hauliers when required.

This gives us much greater control & flexibility over our deliveries.
All orders are typically delivered within 5-7 working days from receipt of order, however during this time due to UK-wide disruption, some deliveries may take a little longer and we would still aim to deliver within 10 days.

• Delivery lead time is 5-7 working days on all orders, unless otherwise advised.
• Price includes delivery to mainland UK.
• Please check for deliveries into Cornwall, Mid & Northern Scotland & Isles as additional delivery charges may be applicable.
• We cannot currently provide a tracking number for all orders but can accept customer enquiries by phone.
• Off-loading by the customer unless agreed otherwise.
• Tanks are generally strapped to a pallet for fork lift off-load, slings can also be used.
• Please advise if there is restricted access to site or special delivery instructions.