Viega Multiplex Trio E Instructions For Use Manual page 18

Pipe interrupter
Multiplex Trio E fitting, electronic mixing unit
To ensure that no bath water flows back into the drinking water system,
a pipe interrupter must be installed in the pipeline between the mixing
unit and the tub inlet.
The following schematic diagram shows what this should look like:
Fig. 5: Mounting scheme with pipe interrupter
It is important that the pipe interrupter is mounted vertically, in the
direction of flow and at least 150 mm above the upper edge of the
bathtub.
The hand shower must also be protected against bath water
flowing back. If no protection is already integrated into the
hand shower being used, it may be necessary to install an
additional pipe interrupter.
Observe the local standards and regulations.
The pipe interrupter is not included in the scope of delivery and must be
ordered separately. Observe the instructions for use of the pipe inter‐
rupter.
Handling
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