Commissioning; Using Stagnation Flushes To Ensure Drinking Water Quality - schell 00 500 00 99 Anleitung Zur Inbetriebnahme

Commissioning

Using stagnation flushes to ensure drinking water quality

1 Commissioning
The SCHELL SWS Water Management System provides you with full control of
all SWS fittings in sanitary facilities on public, semi-public and business prem-
ises, to ensure best-possible hygiene and superior water-saving efficiency.
However, this is conditional on the drinking water system being operated ac-
cording to the intended use.
Warning!
If the drinking water system is not used as intended, this can
cause damage to property and/or personal injury.
> Make sure that the drinking water installation is operated prop-
erly at all times.
To ensure proper operation, all settings for the Water Management System
must be adjusted to the local conditions of the drinking water installation
during commissioning (by the professional fitter).
1.1 Using stagnation flushes to ensure drinking water quality
Warning!
The SCHELL SWS Water Management System does not check
the hygienic condition of drinking water. The water is assumed
to be safe and of a high quality. An inadequate exchange of
water can result in excessive proliferation of bacteria.
Bacteria in drinking water may affect health in certain circum-
stances or even prove fatal.
> Accordingly, ensure that you schedule stagnation flushes and fol-
low the advice given below.
Electronic equipment for ensuring water quality must be monitored regularly
and maintained/repaired when necessary. In spite of the very high intrinsic re-
liability of the system and its components, outages are nevertheless possible.
If a system of this kind fails in full or in part, manual water exchange must be
performed at all tapping points.
Stagnation flushes are used to maintain water quality in drinking water in-
stallations. To this end, rules and regulations require a complete exchange
of water in the installation every 72 hours. This interval may be extended
to 7 days if a hygienic inspection returns acceptable results (VDI 6023 and
DIN EN 806-5). Programming of the Water Management Server (SWS Server)
therefore requires knowledge of the installation as available from the fit-out
planner.
High-quality stagnation flushes are dependent on two requirements:
1. As far as possible, a turbulent flow must be generated.
2. The flow pressure should never fall below 1,000 mbar at any tapping
point.
Accordingly, the synchronicities that were used by the planner to dimension
the drinking water installation will form the basis for the successful pro-
gramming of the stagnation flushes.
In existing buildings without relevant drinking water installation documenta-
tion, programming parameters are more difficult to determine and typically
EN
149