Geberit Hygiene System We pull out all the stops
When it comes to creating an efficient concept for regular water replacement, Geberit offers a comprehensive solution that really does tick all the boxes.
The goal: customised solutions for maintaining the quality of drinking water in every drinking water installation, regardless of the frequency of use.
The Geberit Hygiene System includes suitable, hydraulically-optimised piping systems, practical piping components, hygiene flush units, sensors and intelligent tools for controlling and connecting sanitary appliances during operation.

Geberit HS10, HS30 and HS50 hygiene flush units
A hygiene flush unit that can be flexibly installed at any necessary position and can also be used for large flush volumes.

Geberit concealed cistern with HS30/HS50 hygiene flush unit
A hygiene flush unit integrated into the concealed cistern that can be used for a room section (such as an individual apartment).

Geberit HS05 hygiene flush unit
A hygiene flush unit module that can be retrofitted in a Sigma concealed cistern.

Control electronics with interval flush mode
In some cases, simple solutions for automatic flushes are all that is required. The additional option of programming interval flushes is available in many Geberit washbasin taps, as well as urinal and WC flush controls.

Geberit HS01 hygiene flush unit
If pipes are no longer in use and drinking water is stagnating there, the Geberit HS01 hygiene flush unit can be used until the unused pipes are removed.
Safely prevent stagnation with a system
Stage 1: Correct piping
1. Optimum pipe installation
Description
- Smallest possible pipe diameter
- Looped pipe installation on the floor with a frequently used consumer at the end of the pipe
- Thermally decoupled pipe layout on the floor
- Separate boxes for hot drinking water (PWH, PWH-C) and cold drinking water (PWC)
- Proper insulation of the pipelines (PWH, PWH-C, PWC)
Benefit:
- Low pipe contents
- Short draw-off times
- Low risk of stagnation
- Reduction of the thermal load on the cold-water pipe

Stage 2: Regular flushing
1. Optimum pipe installation
2. Automated water replacement by hygiene flush unit
Description: In addition to stage 1
- Use of an automated flushing device to ensure water replacement when not in use
Benefit: in addition to stage 1
- Flushing programmes as required (time or interval programme)
- Ability to also flush hot water
- Configuration, function test, recording and maintenance via the Control app
- Planning flexibility afforded by different solutions for automated water replacement
- Connection to building automation via Digital I/O

Stage 3: Controlled rinsing
1. Optimum pipe installation
2. Automated water replacement by hygiene flush unit
3. Targeted water replacement by means of analogue sensors
Description: In addition to stage 2
- Takes into account the temperature profile and stagnation behaviour
Benefit: in addition to stages 1 and 2:
- Temperature-controlled flushing programme
- Water replacement ensured by means of volume measurement
- Ability to record the flushed water volume

Stage 4: In the future: clever rinsing
1. Optimum pipe installation
2. Automated water replacement by hygiene flush unit
3. Targeted water replacement by means of analogue sensor technology
4. Optimised operation through networking
In the future, the connected Geberit Hygiene System will bundle all information flows and offer seamless integration into building automation.

Flush modes for any operation
Interval flush mode
In interval flush mode, a flush takes place at regular intervals if the drinking water installation is not in use or is only used to a limited extent. There is no fixed flush point in this operating mode. This makes it possible to comply with the requirements regarding regular water replacement in accordance with DIN EN 806-5 and VDI/DVGW 6023-1.


1. Image: In interval flush mode, a flush takes place at regular intervals.
2. Image: Example of piping of an interval-controlled concealed cistern with hygiene flush unit
Time flush mode
The time-based flush starts at fixed times. It starts at a specified time of day (e.g. 6:00 p.m.), combined with one or more days of the week (e.g. Tuesday, Thursday and Sunday). When actuated, the flush lasts for a specified, adjustable flush time.


1. Image: Example of piping of an interval-controlled hygiene flush unit with two classrooms, WC and technical room
2. Image: Example of piping of a time-controlled hygiene flush unit
Temperature flush mode
Flushing the pipes in rooms where water temperatures reach the critical range due to the use of the room. In this operating mode, the flush starts when a particular temperature is reached (e.g. standard specification for PWC max. 25°C). The flush ends either when a stop temperature is reached or after a maximum predetermined flush time.
If the specified temperature is not exceeded within a predetermined time frame, the control actuates a routine flush. The routine flush is interval-based. The enable time can be used to set a time frame during which the hygiene flush unit should not actuate a flushing process (e.g. from 10:00 p.m. to 8:00 a.m. in hotels).


Figure 1: Example of piping of a temperature-controlled hygiene flush unit using the example of a service connection room and a plant room with a room temperature >25°C.
Figure 2: Example of piping of a temperature-controlled concealed cistern with hygiene flush unit and using a temperature sensor.
Geberit system components
Geberit supply systems
Geberit supply systems ensure exceptional standards of drinking water safety and hygienic processing.
- Geberit pipes and fittings are protected with protective caps
- The protective caps prevent contamination during storage and transport
- Do not remove the protective caps until immediately before installation
- Replace the protective caps during interruptions in installation

Sampling
Clean extraction of the water probe
- Simple and professional sampling
- For mounting on all Geberit angle-seat stop valves
- Flexible mounting: Sampling valve can be rotated through 360°

Geberit angle-seat stop valve with connections for all Geberit supply systems
- Long-lasting use thanks to the self-lubricating lip seal in the spindle seal
- Ergonomically shaped hand wheel
- ¼ inch connection facilitates the installation of a temperature sensor with thermowell


Sensor technology
Geberit temperature sensor with male thread
- For drinking water (cold and hot)
- Temperature sensor PT1000
- Stranded wire cable 4 × 0.25 mm²
