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FRONT AND TOP ACCESS DUAL FLUSH

CONCEALED CISTERN INSTRUCTIONS

240120

A_04/2021

www.

wirquin

.co.uk

Place the coupling nut followed 

by the seal on the flushpipe. Insert 

flush pipe into tail of flush valve and 

secure the coupling nut. The fixing 

nut should be tightened by hand 

and then a further half turn using a 

spanner or small wrench. DO NOT 

OVERTIGHTEN.

WARNING:

Do not use mole grips on plastic nuts.
Do not use sealing compound as damage may occur on plastic components.
Do not over tighten plastic nuts.

Please ensure these instructions are followed carefully – if you are unsure about any aspect 

of this installation, please consult a qualified installer. In the event of any problem with the 

function of this equipment, please check installation before contacting your supplier.

The cistern is supplied pre-assembled, for pipe work 

to be fed from the right hand side of the cistern. 

The outlet valve back nut should be tightened to a 

maximum torque of 9Nm.

1

FIXING THE CISTERN TO THE WALL:

a.  Establish the location of the cistern relative to the WC pan using the min/max flushpipe heights below;

  • 1.5” flushpipe: max 360mm, min 180mm

  • 2” flushpipe: max 190mm, min 100mm

  Note: the cistern should be fitted as high as possible inside a WC unit. In deep WC units or wall cavities, it may be necessary to 

fit a wooden batten to the rear of the unit or solid wall to move the cistern and flushpipe forwards. 

 

      

IF THE CISTERN DOES NOT HAVE A FRONT CUT OUT, IT SHOULD NOT BE INSTALLED IN FRONT ACCESS FURNITURE UNITS.

b.  Mark where the cistern is to be located (top and sides), use a spirit level to ensure the cistern is level.

c.  Fit the wall mounting bracket to the centre of the installation position as shown below ensuring that the moulded arrow points 

towards the wall.

d.  Check that the wall mounting bracket is level using a spirit level before finally tightening the screws.

e.  Hang the cistern onto the wall mounting bracket.

INSTALLATION OF EQUIPMENT

CISTERN BODY

Note: Maximum dimensions of flushpipe establish where cistern is
to be located relative to the WC pan. Hold cistern in place, ensure
cistern is level using a spirit level, and mark where the cistern is to
be located, as shown in picture A. Mark top and sides of cistern
and fit wall hung fixing bracket to the dimensions shown below.

PLEASE NOTE  – If the furniture unit is front access only allow
a 50mm gap from the underside of the unit top to the top of
the cistern to allow easy access for the flushing valve.

222mm

44mm

56mm

B

A

Line markings of cistern as drawn in picture ‘A’

WARNING:

Do not use mole grips on plastic nuts.
Do not use sealing compound as damage may occur to plastic components.
Do not overtighten plastic nuts.

If the cistern is  being used as front access do not use the lid fixing screws.

The fixings supplied with this cistern will NOT suit every type of material or construction

When fitting wall hung fixing bracket, ensure that the arrow
indicated points towards wall/cabinet.

Using  a  scewdriver,  lock  the  wall  hung  fixing  bracket  into  position  using
screws provided as shown in picture ‘B’.

35mm MAX

  

 

 

Fig. 

12 

     Fig. 

13 

 

 

11. Fit the access panel (M) onto the front of the cistern (B). 

 

12. Using a drill and appropriate bit, drill a hole in the fascia panel of the WC unit or 

false wall in a suitable position for the push button (A). Secure the push button to the 
WC unit fascia panel using the shroud and backnut provided. 

 

13. Attach the cable from the flush valve inside the cistern onto the back of the push 

button (A).  

 

14. Attach the fascia panel to the WC unit (if applicable).  

 

15. The flow restrictor (O) should be inserted firmly into the tail of the inlet valve. The 

flow restrictor should be cut to size depending on the inlet water pressure. (See 

Fig. 

14

). 

 

 

Fig. 14 

 

16. Connect the water supply to the cistern inlet valve. Connect the waste connections 

to the WC pan. Check thoroughly for leaks.  
 

Push the flush pipe connector onto the end of the 

flush pipe.

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