The ravages of time do not stop at the quiet place. So it is advisable at some point to renovate or replace sanitary facilities such as the toilet. Not only for the good feeling of finally taking a seat on a new toilet, but also for the sake of the environment, it makes sense to change old facilities. But don’t worry, it’s not as complicated and dirty as it sounds, as the following instructions for installing a toilet clearly demonstrate!


In the two previous articles, the installation of the cistern was described and completed to such an extent that only the toilet is missing for a relaxed toilet passage. A very high quality plaster cistern with glass front from Geberit (Monolith) was installed.

The following project now shows the installation of a matching stand-alone WC with shower function, known under the name Aquaclean Sela.


For the installation of a toilet no more tools are needed than for the installation of the new cistern. You should have at your disposal the obligatory measuring tape, a drill with a tile drill, a hammer, a set of socket spanners, a cutter knife, a cross screwdriver and a Torx screwdriver.

The material list is much shorter. More than the Aquaclean-WC Sela including accessories is not necessary.


A floor anchorage must be provided so that the WC remains in place even in stormy toilet corridors. As with the cistern, the dimensions are based on the drain pipe. Two holes are required 36 cm from the wall, 6.5 cm to the left and 6.5 cm to the right of the central axis of the drain.

These two points are measured and marked with a tape measure. Then the drilling machine with a 10 mm drill is used. A stone, concrete or lance drill will be sufficient for ordinary stoneware or stoneware. If, on the other hand, harder tiles are available, another tool, such as a diamond drill, must be used. Once the holes have been drilled, the dowels are inserted and the floor anchorage (fixing angle) is screwed on. The internal distance between the two fixing brackets should be 9 cm. This requires a size 13 socket wrench.


Next, the toilet ceramics are prepared. In order to level out unevenness in the floor and prevent damage to the cistern, connecting tapes are glued to both the underside and the back of the toilet bowl. The corners and curves are no problem, as the connecting strips are flexible and therefore very easy to guide around the curves.

The strips are cut either with scissors or a cutter knife.

Once this is done, the rubber sleeves or seals can be attached to the flushing pipe and the outlet pipe. The black sleeve gasket finds its place on the flushing pipe. The grey drain sleeve, on the other hand, is placed on the outlet bend.

To ensure that the toilet slides smoothly into the pipes during installation, the cuffs must be provided with a pipe lubricant. The sleeve seal is wetted on the outside, while the drain sleeve is wetted on the inside. Read more here about advice from plumber for more information.

Tip: Instead of a pipe lubricant, you can of course also use a little detergent.


Once the preparations have been made, the next step is to take the toilet to the cistern. Make sure that the toilet is placed a few centimetres in front of the cistern and that the floor anchors are inside the ceramic. Afterwards, make sure that both the previously installed power connection and the water connection are threaded into the ceramic of this Aquaclean WC. This is because these must not be trapped and must remain movable.

Then the toilet can be pushed slowly in the direction of the cistern. If the cistern was not slopped during installation, the toilet should slide backwards effortlessly. If this works, the cable and water pipe are checked again. The toilet can then be screwed to the floor. The plastic bushings are put over the screws and screwed in with the help of a Phillips screwdriver. The installation of the toilet slowly takes shape!


The next step is to prepare the Aquaclean unit (shower unit). The ball valve is connected to the arriving flexible water pipe. Note: A handtightening of the threads is sufficient for the installation of the WC. The use of a pipe wrench is not necessary and also not recommended!

The angle valve is then opened when the ball valve is closed. The ball valve is then opened for one to two minutes to flush out any dirt in the pipe. The water filter is then installed. This is necessary to protect the hoses and pumps of the Aquaclean unit and is connected to the ball valve with the white end.

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