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Flushsaver
 
 

Installation Requirements : Flushsaver Pans

 
technical specificationsInstalation InstructionsInstallation Requirements
 

 

To allow for the commissioning of the product the installation of the water and waste pipe will vary to a conventional installation of a traditional cistern. There are basically three types of installation that suit the requirements of the system.

  • VOID/SERVICE DUCT BEHIND TOILETS:
    This installation is typical of a high rise building where a service duct exists directly behind Pans. The flush pipe penetrates the back wall and the Solenoid Valve and Airgap Valve is located in the services duct. Water and power is available in the duct for the commissioning of the unit. The plumbers will install the flush-pipes and set the pans. The 40mm flush-pipes are roughed in to the correct location and level (1.2 metres from the invert level of the pan outlet). A water service is installed and a control valve (minimum 25mm) installed and located no further than 1000mm from the top of the flush pipe.
    Where there are 6 or more “Pans” being run off the same incoming waterline we would recommend that a 32 or 40mm waterline be used.

  • UNIT HOUSED IN CONCEALED CAVITY:
    This installation is where no void/duct exists behind the pans. The plumbers chase the 40mm flush-pipes
    into the wall to a cavity above the 1.2 metre invert level (Solenoid Valves can also be concealed in the ceiling). The flushpipe is then terminated in this cavity and a water supply is also terminated in the cavity. Power is supplied from an alternate location and a conduit run and terminated in the cavity. (Power points and water service not permitted in cavity together). The Plumbers then install the unit and run low voltage (24v) cables from the power point through the conduit to the cavity. The Solenoid Valve is installed and tested, then commissioned and ready for use.

  • EXPOSED PIPEWORK:
    This installation is suited to old/existing toilet blocks where no void areas or ducts are available.
    The installation involves the flush and water pipes to be exposed on the internal wall at the rear of the pan. Chrome plated flush pipes and water pipes are used with the Solenoid Valves/Control Module being housed in vandal proof boxes. A false wall could be installed to cover all pipe work.
  • WATER FLOW:
    You will require a minimum of 25mm water line into this area to ensure adequate water flow with a 40mm flush-pipe. Where there are a number of “Pans” it would be advisable to run a 32mm water line. Minimum water pressure required is 200 KPA (working pressure) with a WATER FLOW of 1.3 LITRES PER SECOND.

  • WIRING:
    The wiring used to and from the control unit is standard “figure 8” cable and is widely available from electrical wholesalers and retailers.

  • EARTHING:
    An earthing stud is provided adjacent to the AC IN2 terminals for grounding the metal parts of the unit

  • CONNECTION:
    It is recommended  you use 50mm flush pipe from the Air Gap for a length of 300mm.  Should this not be possible please contact your nearest agent for alternative procedures.

Connection onto the Airgap Valve thread should be with 50mm F.I. adapters (no.2) PVC or Copper. Do not use 50mm Cap and Linings

IN-LINE FILTER:

It is recommended that an in-line filter be placed after the stopcock to prevent water contaminants from entering the solenoid valve and unseating the valve's diaphragm.

PRESSURE REDUCTION VALVE:
In installations where there is high water pressure and flow rates the stopcock may have to be partially closed to prevent water escaping from the Air Gap. This causes water turbulence, often resulting in a noisy installation. Should this be the case, an adjustable pressure reduction valve should be placed in the line before the stopcock. This valve should be adjusted to decrease the pressure to a level whereby the flow rate is not significantly affected.

SPECIAL NOTES:
You will require a minimum of 25mm water line into this area to ensure adequate water flow with a 40mm flush-pipe. This should be in a straight line from the airgap to the back of the “Pan” (variations on this can be used – please enquire). Where there are a number of “Pans” it would be advisable to run a 32mm water line. Minimum water pressure required is 200 KPA (working pressure) with a WATER FLOW of 1.3 LITRES PER SECOND.


 
     
 
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