BWT bestsoft 4 Einbau- Und Bedienungsanleitung Seite 28

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NOTE!

Never install the water softener where it, or its connections (including the drain overflow lines) will
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be subject to temperatures under 0 °C or above 40 °C
If you are planning to install the water softener above ground level e.g. In the loft,the following
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instructions should be strictly adhered to.
3. Loft installation:
The water softener should be installed within a container of not less than 100 l capacity, to which
there should be connected an overflow pipe of not less than 20 mm diameter. The overflow should be
connected at the bottom of the container and not less than 15 mm below the height of any electrical
components mounted on the water softener. It is recommended that a tube diffuser be fitted to the inlet
pipework supplying the water softener.
4. Plumbing systems:
There are several types of plumbing systems in common use: e.g the 15 mm pipework (as Static Head
system). The water softener can be supplied optionally with a high flow installation kit and flexible high
flow hoses suitable for 22 mm pipework, for 15 mm pipework use the reducing bushes supplied with
the kit, (see chapter 3.4 Installation Layout).
5. Backflow prevention device:
When fitted to the supply feeding a single dwelling, a check valve complying with national regulations
must be fitted on the cold water feed prior to the installation. All other types of installation require the
fitting of a double check valve.
6. Drinking water:
Your water softener installation must include at least one drinking water tap that is not fed by the water
softener.
I WARNING!
In case of low sodium diet follow the local "department of health's" advice concerning the use of
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softened water for drinking.
Water that is used for mixing powdered milk for babies must only be taken from an unsoftened
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mains tap as some powdered milks and softened water both contain sodium for which young
babies have a limited tolerance.
7. Reference Data for Hardness Adjustment:
Please test the water hardness and, if required, use the chart to convert hardness settings to „parts per
million" (ppm) and refer to chapter 4.3.
The specific hardness conversion chart for capacity of the time-clock operation is listed in the last
column (see cover).