Page 3 Fleck 9100 Nitrate filter Start-Up Guide Clean Water Systems 2009
5.
You do not need unions to install your nitrate filter. If you need to remove it, the Fleck 9100 has
quick-release couplings on the bypass valve that make it easy to put the nitrate filter on by-pass
and remove the filter system from the piping.
6.
The drain line tubing (not supplied) is connected to a drain from the drain outlet using flexible
½” ID tubing. Note that the drain can run up above the Fleck 9100 control and into a drain, it
does not have to drain down, as the filter backwashes under line pressure from your well pump.
Most plumbing codes require an air-gap connection, so that if your sewer or septic tank backs
up, it cannot cross connect with the drain tubing.
7.
Usually you do not want to water the garden or irrigate your landscaping with softened water.
This will require more salt than usual to be used and in some cases the sodium can build-up in
the soil causing some problems to sensitive plants. It is often not difficult to run hard water
(not-softened lines) to the irrigation thereby bypassing the nitrate filter. If you do want to
irrigate with soft water we recommend you use potassium chloride salt (widely available)
instead of regular sodium chloride (nitrate filter rock salt). Any type of salt though can be used
in the nitrate filter.
Fig 1 - Typical nitrate filter piping installation with ball valve and hose bib after the filter
