Plumbing installation: installation and connection of the bidet

Recommendation points

• Bidet types and equipment differences
• Connection to communications
• Floor mounting
• Suspended mounting
• Twin installation

In the arrangement of the bathroom, hygienic baths are used more and more often. There are several varieties of them and each differs in the order of assembly and installation method. We invite you to improve your professionalism in working with plumbing and study our instructions for installing a bidet.

Bidet types and equipment differences

Like other plumbing fixtures, the bidet has several varieties. Each of them has differences both in functionality and principle of operation, and in the connection diagram. The preparation of bathroom finishes and the layout of rough plumbing for different types are also different.

By analogy with a conventional toilet, the most popular type of bidet is installed – for floor mounting. The main fastening to the floor is carried out with a pair of massive screws in plastic plugs, communications are diverted from the rear of the device and are available for maintenance at any time. Console bidets are sometimes referred to as floor-standing bidets, which are attached close to the wall with hidden connection.

Wall-mounted bidets require an installation frame in the wall cavity, but overall the story is the same as with a conventional wall-hung toilet. The advantage of this installation method is greater aesthetics: the device fits tightly to the wall, withstands a load of up to 400 kg, all the details of the technical connection are hidden from view, and the floor is free for cleaning. It is impossible not to mention that in this option, the package usually includes all the necessary fittings for connecting to communications, while for a floor bidet, the siphon and nozzles will most likely have to be bought separately.

According to the method of operation, bidets are divided into baths with a hygienic shower / gander and a built-in rising fountain. Not all products are equipped with a mixer and a watering can, mainly for floor-mounted bidets and less often for wall-mounted ones. Here the choice depends on the personal preferences of the people who will use the sanitary ware. Note, however, that a built-in fountain or spray is already included in the package..

Connection to communications

To connect a bidet, it is necessary to have a supply of hot, cold water and a sewer drain. Rare models with electronic controls or special features like a built-in hair dryer require an electrical connection.

The method of supplying water to the bidet differs depending on the installation method. For floor-standing and, sometimes, console bidets, it is required to lead the threaded fittings out of the finish, masking the passage in the wall with decorative “cups”. Shut-off valves for both inlets are mandatory, but can be hidden with access through the inspection hatch.

The water supply to the wall-mounted bidet is carried out hidden in the cavity of the wall where the installation is installed. All that is needed is to bring the threaded fittings close enough and connect them to the mixer with flexible hoses. For surface mounting, it is also possible to rigidly connect pipes to adapters fixed to the installation frame, it all depends on the ease of installation in certain conditions.

Most bidets require 50 mm sewer connections, rare European-made devices have a 40 mm connection. The pipe must be fed horizontally from the collector with a uniform slope of 5: 100. If the distance from the bidet to the riser is more than 1.5 meters, an additional outlet with a fan valve should be taken out behind the bidet. For flush-mounted installation, it is better to provide the sewer supply with a turn of 45 °. For floor-standing devices, two rectangular elbows are suitable, the outermost of which is raised to the required height and turned towards the plumbing fixture.

Floor mounting

As an example for a floor-standing installation, take a bidet with a conventional mixer. All fittings are installed in it in advance:

1. The mixer, valve or lever, is mounted similarly to the sink mixer and is supplied with two flexible inlets with a 1/2 “union nut at the end.
2. A siphon is installed in the drain hole. Usually it differs from common fittings for baths and sinks, but has a similar installation scheme. First, a throat pipe with a drain grate is inserted, a Z-shaped differential is attached to it with a union nut, the opposite end of which is adjusted to the height of the drain socket in the wall.
3. The excess horizontal outlet from the siphon is cut to the required length so that the bidet is as close to the wall as possible.
4. Bidets can also be connected with a corrugated universal pipe, but a rigid installation is more reliable and preferable from the point of view of aesthetics.
5. Some bidet models have an overflow hole and a separate siphon connection. These elements are also installed in advance according to the attached instructions before fixing the bowl..

Fixing the bidet to the floor is the simplest method among other installation systems. The bowl must be set perpendicular to the wall at a minimum distance from it and markings must be applied to the floor through the mounting holes for drilling. To mount the bidet, use steel hex head screws for a wrench, screw them into 10 mm plastic plugs.

When the holes are drilled and the plugs are clogged, the bowl is installed in place, in parallel, including the outlet of the siphon into the drain pipe. After that, the screws are tightened, their caps are hidden with decorative caps and the hoses for hot and cold water are connected.

Suspended mounting

The fixing of the bidet to the installation must be prepared at the finishing stage. The frame is installed according to a typical scheme: rigid fastening to the floor and walls, adjustment and tightening of nuts. Connecting to communications looks much more interesting..

Like a wall-hung toilet, the bidet has a hidden mounting console on which studs are attached, a drain pipe with a sealing flare and a pair of connectors for water supply. The latter often look like pass-through pipes, but can also be equipped with shut-off valves or valves for venting air.

It is convenient to connect to the sewage system on an oblique one: the sealing branch pipe is equipped with a rectangular elbow, which rotates at 45? and inserted into a prepared knee. After that, the extreme segment of the horizontal section of the sewer pipe is cut to the required length and the entire drainage channel is finally assembled.

When the finish is completed, the protective covers are removed from the installation studs and the bidet is mounted in place. It is enough to carefully pave it and thread the studs into the mounting holes. Until the bidet is finally pressed against the wall, the water supply is connected to the pre-assembled fittings. Here we will take a look at assembling a bidet with an integrated upstream as an example:

1. First, all existing fittings are fixed in the holes of the bowl: valves, pressure regulator and fountain.
2. According to the diagram attached to the product, these elements are connected by flexible hoses. Usually, you just need to connect the mixer to the valves; water is supplied to the fountain through channels under the rim of the bowl. Sometimes the supply hoses are connected only to the mixer or valves that communicate with themselves by hidden channels.
3. The drainage system is mounted: the grate or valve is fixed in the hole of the bowl, connected to the bend through a union nut with a wedge-shaped ring.

All communications of the wall-hung bidet are routed inside a hidden cavity at the back of the bowl. The attachment of the mounted bidet occurs last: first, the flexible hoses are screwed on, then the drain is inserted and only after that the nuts on the studs are tightened.

Twin installation

Currently, flush-mounted installation kits are convenient, in which a toilet with a bidet is installed next to it and can be installed both suspended and console. The main advantage of pair mounting is the high final aesthetics, because both products are made in a single style solution, and the technical details of their connection are not visible to others.

Separate frames are used to mount the paired installation, this allows you to freely set the distance between the plumbing fixtures. It is advisable that the toilet with its installation be more distant from the riser than the bidet. In this version, behind both frames, a common 110 mm channel with a nominal slope is laid, into which the drain from the hygienic bath is cut through a tee with an inclined outlet of 50 mm.

With the described installation procedure, the length of the hot water supply is reduced. It also eliminates the undesirable effect of air leakage when flushing a large volume of water, due to which the bidet siphon is dehumidified and allows unpleasant odors to pass.