SCREWFIX CJ720 Wall Hung Toilet Support Frame and Cistern Installation Guide

0.82m Wall Hung Frame
with Air Gap Technology
Fitting Instructions
TR9005

Please read completely first before commencing.
Please retain for future reference.

This product must be installed by a qualified fitter or plumber in accordance with and meet the requirements of Water Supply (Water Fittings) Regulations 1999, the Water Supply (Water Fittings) (Scotland) Byelaws 2014 and the Water Supply (Water Fittings) Regulations (Northern Ireland) 2009

Exploded Diagram

Fitting Dimensions

(Wall Hung Frame dimensions – Top mounted flush plate shown)

Installation of Waste Pipe

To allow space for the installation of the waste pipe allow at least 170mm of space between the wall and the wall hung frame.
The waste pipe can be installed easily by opening up the fixing collar and positioning the lip of the waste pipe inside the collar. The collar should then be clipped closed to secure the waste pipe in place before it is connected to the toilet pan.

Installation of Wall Hung Frame

Take care using power tools – The use of a residual current device (RCD) is recommended. Beware of hidden cables or pipes when drilling.

tip
If installing within a furniture unit, drill through both the brace ad the wall to secure fix the frame in place.

Assemble the brackets to the frame as shown, using 8x 25mm hex head bolts & washers.
The height of the frame and distance from the wall can be adjusted manually with the bolts found on the top fixing bracket and the legs of the frame. Loosening the bolts will allow the frame to be adjusted accordingly. Use a spirit level to ensure the frame is level. Re-tighten the bolts to secure the frame into its new position.
Using the dimensional drawing above as a guide, mark and drill holes in the appropriate places using a 10mm masonry drill bit. If the frame has been adjusted, mark off the new hole positions accordingly. Use a piece of masking tape to prevent the drill from wandering.
Using the wall fixings provided, secure the frame to the wall. Ensure that the fixings supplied are suitable for the installation in hand. If in doubt consult an expert.

Installation of Isolation Valve

The isolation valve should come pre-assembled with the cistern. If the valve needs replacing, the above instructions show the correct installation procedure.
IMPORTANT: Flush out all impurities in the system prior to connection. Before building the final cladding, install the pan, turn on the water supply and fill the pan. Check tightness of supply and drain connections. Close the isolation valve and drain the cistern and pan, then remove the pan. Connect the water supply to the cistern using an approved double check valve to fluid category 3.

Installation of Protective Casing

Before the partition wall is installed around the wall hung frame, the plastic protective casing needs to be screwed onto the cistern in the desired position to ensure that the push plate or flush button can be installed later. Ensure that there is minimum of a 3mm gap between the protective casing cover and the aperture in the partition wall (or furniture fascia). Click the blanking plate in place to prevent any debris entering the cistern during the 2nd fix.

Install the bungs in the waste and flush pipes to protect them during any building work. Similarly, the threaded rods on which the toilet pan will be hung should be installed at a distance corresponding to the width of the pan fixing holes. When screwed into place, the flexible sheaths should be put on the rods for protection.

Installation of Wall Hung Pan

Once the partition or furniture is assembled and complete, the pan can be fitted.

1. Place the inlet and waste pipe into the frame and place a mark that corresponds to the finished surface of the wall.
2. Then place both pipes onto the back of the pan and using a straight edge, place a mark that corresponds to the back face of the pan
3. The distance between these two marks corresponds to the amount of pipe that needs to be cut off to enable the pan to fit snugly against the finished wall surface.
4. BEFORE cutting the pipes, add a further 6mm to the amount to be cut off on the inlet pipe. Add a further 3mm to the amount to be cut off the waste pipe.
5. It is ESSENTIAL that the extra distance is added to cut away extra material, this is to allow for compression of finished surfaces when the WC pan is installed. Take care to cut straight otherwise leaks will occur.
6. Once cut, add a chamfer to the end of the pipe to ensure that it can be easily located inside the pipework in the wall hung frame. Using a suitable lubricant, locate the waste pipe into the frame.Push the trimmed pipes into position as shown and check that they are secure. DO NOT use silicone when attaching the inlet pipe as this may prevent a seal from forming. Remove the protective flexible sheaths from the threaded rods. Position the pan taking care that the connecting pipes are well aligned to prevent leaks. Use a spirit level to make sure the pan is level and then fix to the rods with the fixings supplied by the pan manufacturer.

Installation of Flush Plate

1. Using a craft knife, cut the protective casing so that it is flush with the finished surface
2. Screw the plastic fixing arms supplied with the flush plate into the protective casing. A quarter turn should secure the arms in place. The arms may need to be cut down depending upon finished surface thickness
3. Fix the flush plate mounting bracket to the fixing arms using a screwdriver as shown.
4. Take out the hoses so that they can be accessed for fitting the flush controls.
5. Connect the hoses, making sure that the blue hose is connected to the half flush connector ( ) and the clear hose is connected to the full flush connector ( ), as shown.
6. Locate the right side of the flush plate onto the mounting bracket and push to the left to locate.

Adjustments & Maintenance

For maintenance access, the flush plate can be easily removed for access to the inlet and flush valves.

The diaphragm can be removed and cleaned if the flow rate slows down or doesn’t stop. The images above show how the valve can be disassembled and cleaned. Turn off the water supply on the internal stop valve before removal.

The flush valve can be adjusted to increase or decrease the amount of water used during each flush. It is factory set for 6L full flush & 3L reduced flush.

Flush Valve Settings

Troubleshooting Guide

0.82m Wall Hung Frame
Please retain for future reference

How to Access your frame

1. Slide flush plate to the left

2. Pull flush plate away form the wall

3. Detach the clear and blue hose from the back of the flush plate

4. Undo the screws in the mounting bracket using a screwdriver

5. Remove the mounting bracket from the wall

6. Turn the fixing arms 1/4 turn in either direction to unlock

7. Remove the fixing arms from the protective cover

The Fill Valve does not work or
isn’t controlling the water supply
efficiently.| The fill valve may be blocked. To access the fill valve squeeze the clip on the mounting bracket and slide the valve the left to release.| Follow the instructions below and clean the water inlet orifice, diaphragm and cap. If split or scaled up, replace the diaphragm, available as SP19756.To clean the aerators, remove the cap from the top of the inlet valve and remove the aerators by pushing them out from underneath the outlet hole using a screwdriver or equivalentIf the flow rate is still too slow, the filter can also be removed from the inlet of the valve for cleaning using long nose pliers. Ensure to reinsert the filter before reconnecting the water.
Water leaks from the base.| 1. The flush valve stem may be obstructed or jammed, preventing it from falling back into position.| Ensure that there is nothing obstructing the flush valve and the stem can extend up and down. Please take particular focus to ensure that the stem doesn’t clash with the flexible hose.
Water leaks from the base.
(Continued)| 2. The rubber flapper seal may have fallen off, may need cleaning or could be damaged.| Ensure the flapper seal is fixed in position. However, if it is damaged, a replacement is needed, this is available as SP12551.
NOTE:
Before re-fitting the flush valve assembly check the base is
correctly seated as shown to the left and not out of position (see below as an example)
| | Ensure the rotation of the blue, reduced flush float is in the
correct position, and has locked in place securely.
If it isn’t (as shown left) the float can catch on the adjustment
measure. To lock in place, simply rotate the float anticlockwise.
The flush valve does not work properly.| The pneumatic tubes may have been installed incorrectly on the flush plate.| Ensure that the tubes match the following configuration and are fully sealed around the nozzles:
The blue tube must be connected to the joint marked with a half circle.
The transparent tube should be connected with the joint marked with a full circle.
There is dripping water from the
inlet of the WC pan.| Ensure that the black flush inlet pipe (SP14733)
has been prepared properly.| 1. Ensure that silicone has not been used to on the rubber pan seal (SP12170) as this may prevent a seal from being formed.2. Ensure that the flush pipe has been cut square. 3. Ensure that the flush pipe has been filed to add a chamfer to the end as this helps the pipe properly locate into the cistern’s pipework. 4. Ensure that the inlet pipe hasn’t been cut too short and that 6mm was added to the dimension ‘X’, where X was the excess pipe between the rear of the pan and the finished surface of the wall. Please refer to the installation instructions for further guidance

Using the Frame in a Furniture Unit

When installing the frame into a WC furniture unit, some struts may need to be removed. Always check before cutting that the unit integrity will not be compromised. Units can be screwed to adjoining units in a run where possible to add further strength.
Front struts in a WC furniture unit will cause the frame to be spaced away from the main WC facing fascia of a WC unit.
This will create a void which will need to be filled (between the frame and the back of the main fascia) to stop the main fascia bowing in when the WC is in use.
You may need to remove the feet in a fitted furniture WC Unit to facilitate room for the frame. The unit can be wall hung instead.
Any back rails in a WC Unit must be removed or repositioned to the back of the unit if they are not already. Frame brackets must screw directly into a solid wall. Screwing into a rail or strut that is not secured up against a solid wall will not prove strong enough when the frame is in use.

General Care & Safety

Wall plugs supplied are ONLY suitable for solid stone/brick walls. They are not suitable for use in aerated blocks or similar. If fixing to a stud wall, sufficient extra internal reinforcements must be made to the wall. Screws must locate into suitably reinforced studs and noggins.
Take care using power tools – The use of a residual current device (RCD) is recommended. Beware of hidden cables or pipes when drilling.
This product can be dangerous if installed incorrectly. This product must be installed by a qualified plumber or installer.
It is the installer’s responsibility to check that the fixings are suitable for the installation in hand.
Cistern fittings are suitable for Water pressure: 0.1 – 10 bar. Do not add caustic chemical substances (eg containing chlorine compounds or similar) into the cistern. These can damage the valve components and cause failure.
Before starting to enclose the frame, the system must be first tested for leaks before 2nd fix commences. Using the help of a second person to hold the pan in place on the frame, turn on the water supply and flush the pan to check for leaks.

Brought to you by the Roper Rhodes Group
Brassmill Lane Trading Estate
Bath
BA1 3JF
t: 01225 303900
V1.0.TP.04.2021 21
BS EN 14055:2010 & BS EN 14124: 2004
Load Tested to EN 997: 400KG

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>