BWT AQA smart Einbau- Und Bedienungsanleitung Seite 45

5.3 Feed water
The hard water to be fed into the unit must always
meet the specifications of the Trinkwasserver-
ordnung (German drinking water ordinance)
or EU Directive 98/83/EC. The total dissolved
iron and manganese may not exceed 0.1 mg/l.
The hard water to be fed into the unit must always
be free of air bubbles. Install a bleed device if
necessary.
If the treated water is intended for human con-
sumption as defined in the Trinkwasser-verordnung
(German drinking water ordinance), the ambient
temperature must not exceed 25 °C.
If the treated water is intended for industrial pur-
poses only, the ambient temperature must not
exceed 40 °C.
The unit's maximum operating pressure must never
be exceeded (see chapter 12, Technical specifica-
tions). If the network pressure is higher, a pressure
reducer must be installed upstream of the unit.
The unit requires a minimum operating pressure to
function (see chapter 12, Technical specifications).
During pressure fluctuations and surges, the sum
of the pressure surge and the standing pressure
must not exceed the nominal pressure. The po-
sitive pressure surge must not exceed 2 bar and
the negative pressure surge must not be less than
50 % of the self-adjusting flow pressure (see DIN
1988-200/3.4.3).
Continuous operation of the water softener with wa-
ter containing chlorine or chlorine dioxide is possible
if the concentration of free chlorine/chlorine dioxide
does not exceed 0.5 mg/l.
Continuous operation with water containing chlori-
ne/chlorine dioxide will cause premature ageing of
the ion exchange material. A water softener reduces
the concentration of free chlorine and chlorine dioxi-
de. In other words, the concentration in the outflow
of a water softener is generally considerably lower
than in the inflow.
5.4 Installation
The pipeline network must be flushed before the
unit can be installed.
You must check whether a mineral metering device
needs to be installed downstream from the water
softener for the purpose of preventing corrosion.
Use corrosion-resistant pipe materials for installati-
on. Pay attention to corrosion-causing chemical pro-
perties when different pipe materials are combined
(mixed installation), even in the inflow direction
upstream of the water softener.
A protective filter must be installed in the direction
of flow 1 m upstream of the unit. The filter must be
functional before the softener is installed. This is the
only way to ensure that dirt and corrosive products
do not enter the water softener.
Test sample extraction points must be installed
upstream and downstream of the unit, according
to the specifications of VDI 6023.
The hose attached to the overflow point of the
regenerative container and the flushing water hose
must be routed at an incline to the sewage system
or connected to a pump.
According to EN 1717, the flushing water hose and
the overflow hose must be connected to the sewage
system at a specified distance above the highest
possible waste water level. (Distance is greater than
the diameter of the drain pipe).
If the flushing water is fed into a p ump, it must be
designed for a water volume of at least 2 m3/h or
35 l/min for units for building services and at least
3 m3/h or 50 l/min for Rondomat and AQA perla
professional units.
If the pump is used for other units concurrently,
it must be of a larger size to suit the units' water
output volumes.
The pump must be salt-water resistant.
5.5 Operation
The performance specifications of the unit must
match the expected usage conditions. Related
information can be found in DIN 1988-200 and in
the technical specifications.
After periods in which little or no water is tapped,
e.g. during holidays, you must fully open the tap
for at least 5 minutes before you can use the water
again (see the section on stoppages in the operating
instructions).
The microbiological quality of the softened water is
also determined by the quality of the regenerative
used.
EN
45
45