Frequently asked questions (FAQs)


What does "DVGW – secure connection to W540" mean?

What does "DVGW – secure connection to W540" mean?

Our units have protective devices which prevent the water from being sucked back and prevent bacteria growing back from the WC ceramic system into the drinking water supply. All feed lines through to the water tank of the device are made from materials which are safe for use with drinking water and thus also help to protect the drinking water.
And your installer can connect our aquamano digital bidet seat to the drinking water supply with a clear conscience.

Is the use of water for intimate hygiene advisable?

Water without any soap can make cleaning easier, whether using the shower, a digital bidet seat or wetted paper. The skin is not irritated and nor is it exposed to any additives (chemicals).

What is the situation with using wet wipes?

Although wet wipes make cleaning easier, they contain various additives which under some circumstances may irritate the skin of the anus. If this happens, you can try changing the brand you use. If you are in any doubt, it is better to stop using them completely.

Is the use of soap advisable?

No. Water without soap is sufficient. Soaps can irritate the skin and encourage bacterial infections because with regular use the skin's protective layer against acid is destroyed. When showering or bathing, the anal region should be thoroughly rinsed with water. Traces of detergent remaining in the underwear can also irritate the skin.

Is a digital bidet seat useful?

Yes. Automatically targeted rinsing with water facilitates anal cleaning and provides a pleasant sensation. The skin can then be dried using the integrated dryer or with a piece of soft paper. The digital bidet seat in particular provides a valuable aid especially to users with restricted movement.

Who actually invented the spray WC?

You will hardly believe it but the spray WC is a Swiss idea which goes back to the 1950s. But in the early days it was not successful in Switzerland and the rest of Europe. The spray WC only became increasingly known and appreciated in Europe once some of the Asian countries, especially Japan and South Korea, adopted the product.

There are so many different names for the spray WC

In recent years the sanitary-ware business in the German-speaking world agreed on the term ”Dusch-WC” (“spray WC”). As it is thought to be an Asian invention (see “Where was the spray WC actually invented?“), Europe has also used such names as “Washlet”, “Japanese toilet” and “Japanese WC”. But “toilet-bidet“, “wash WC“ and “hygiene toilet” are sometimes used. However, it is always the same thing: the “spray WC”.

Do I still need toilet paper?

For rapid and efficient cleansing after defecation it is important not to use paper before the washing action of the spray WC as the use of paper increases the area in need of cleansing. But once the spray WC action is complete you can check that all is well by the use of a small piece of toilet paper.

How much power does it really use?

If it worked at full capacity for 24 hours per day and 365 days per year our spray WC would only cost about EUR 20.00 in electricity. However, we have still incorporated two energy-saving functions (see ”Functions of the spray WC“).

How much water is used?

At full pressure and when the “Lady spray“ is used (the 9 holes in the spray head uses most water in this case) a maximum of 1.2 litres/min. are consumed.
When the cross section of the jet is reduced, e.g. for the intensive jet, the consumption is even less.
Lady spray: 9 holes produce a gentle but thorough spray.
The cross section of the holes in the nozzle reduces from the family spray through to the intensive spray; this decreases the volume of water used and increases the water pressure (irrespective of the pressure you set on the appliance).


Do I need a cold and hot water connection to install the digital bidet seat?

No, a cold water connection (a branch-off is run from the feed line to the cistern) is the only water connection.

What connections do I actually need?

You require a connection to the cold water supply and also a power connection.

How do I get dry again after cleaning?

You can use the integrated dryer. Dabbing off with a small hand towel works just as well.

How complicated is the conversion work in the case of retrofitting?

Ideally your bathroom fitter will already have thought to provide the power socket next to the toilet and the second water connection (for cold water). The installation will then take just a few minutes. If these two connections are missing, then at the level of the fixing screws for the WC ceramic system a hole must be drilled through the tiles (in the case of UP cisterns) and a power socket can then be installed using a cable duct. With wall-mounted cisterns, the installation is also not complicated. For more details, please ask your fitter to prepare a quotation for you.

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