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Waterwiser recycling system installation

Installation procedure waterwiser sump chamber

1.         The logical position for the Sump Chamber is where the Soil Vent Pipe (S.V.P) exits the building.  This allows easy connection of the overflow to the foul sewer.

2.         Dig a hole large enough to accommodate the Sump Chamber and deep enough so that the 110mm inlet invert of the Sump matches the G.W. outlet pipe from the property.

3.         The top edge of the Sump will need to be extended up to ground level with as many courses of bricks as required.  An inspection cover to suit the finished ground is bedded onto the brickwork.

4.         Connect the 110mm Sump overflow to the foul sewer via a trapped gully. 

5.         A 25mm Durapipe (or similar) pipe is connected to the pump outlet from the Sump, (1”. BSP MALE) and then routed to the roof space via the S.V.P. Boxed duct.

6.         The pump is supplied with a length of waterproof flex.  This is routed in a suitable conduit into the building via a junction box and then up to the roof space using 2.5mm Twin and Earth.

7.         Carefully back fill round the Sump with a suitable granular material.

8.         There should be a non-return valve situated between the Collection Tank overflow and the soak-away.

Installation procedure break tank

The Header (Break) Tank is sited in the roof space on a load-bearing platform.  The tank, when full, weighs 75kg.

1.         Connect a 15mm mains water supply to the conventional ball valve.

2.         The 25mm Durapipe or similar is connected to the 1” Male BSP tank connector, situated on the end of the tank.

3.         Connect the float switch electrics as per the wiring diagram.

4.         Connect a 32mm diameter overflow indicator high level above the base of the tank (see diagram).  Route this 32mm pipe to the eaves in the conventional way.

5.         Connect a feed pipe from the base of the Break Tank and route to feed each W.C. cistern.

6.         Insulate pipes and tank as necessary.
Important: It is imperative that mortar from the brickwork and other debris is prevented from falling into the sump, as this well damage the pump and filter. Under no circumstances should copper pipework be used in any part of the waterwiser installation, or for the feeds from the header tank to the WC’s.

Commissioning

At the sump chamber

  • Check with site agent or foreman that all works are complete
  • Ensure the isolator switch is off
  • Remove the inspection cover
  • Remove any debris from the sump chamber
  • Check soundness of all pipes, joints and connections
  • Unscrew filter retaining ring and remove blanking plate
  • Run the cold bath tap and check free flow of water through the filter
  • Allow sump to fill and check overflow

In the roof space

  • Remove any lagging and break tank lid
  • Check soundness of all pipes and connections
  • Turn on mains water supply to the break tank.  Set mains water level to 200mm deep
  • Switch isolation switch on
  • The pump should now start to fill the break tank
  • Set the pumped water level below overflow outlet, using the adjustable float on the switch
  • Replace lid and lagging

Return the sump chamber

  • Fill the bromine dispenser with 2KG bromine provided
  • Adjust the bromine regulating valve to achieve a steady flow of water over the tablets during the pumping cycle
  • Replace inspection cover

Annual Servicing

  • Please check with Gramm for service contract