BWT AQA total 1500 Einbau- Und Bedienungsanleitung Seite 21

GB
2. Purpose of the system
BWT water.
Your daily drinking enjoyment – a must have pleasu-
re for the entire family. The revolutionary technology
in AQA total brings you the new power of drinking
water – personally in your home. AQA total from
BWT with the revolutionary technology:
Daily drinking enjoyment full of
vital elements
AQA total retains all valuable minerals
in the drinking water. The conscious
daily enjoyment of BWT Energy water
is your healthy energy provider, full of
vital elements with essential magnesium,
calcium and oxygen for your body.
Best limescale protection for your
drinking water installation
The bipolar technology - awarded
international test marks (ÖVGW,
DVGW, etc.) and winner of the Stiftung
Warentest evaluation – stabilises the
limescale in the water through the
formation of nano-crystals.
AQA total – environmentally-friendly, operation-free
and low maintenance limescale protection system for
the reduction of limescale precipitation in drinking
water pipes (40° German hardness) and the down-
stream, closed hot water heaters (80°C).
3. Function
The new technology in AQA total:
Drinking enjoyment with vital elements
Effective limescale protection
The working unit consists of a base unit and a re-
fill with a three-dimensional electrode composed of
conducting and non-conducting particles. When a
defined current/voltage pulse is applied, the lime-
carbonic acid equilibrium is locally shifted. Pulse
height and width are dependent on the actual water
properties and flow rates.
They are automatically controlled by the electronic
control system. Following the local shift in the lime-
carbonic acid equilibrium, minute calcium crystals,
so-called nano-crystals, are formed in the unit.
The small size of these nano-crystals means that they
carry an electric charge which prevents them from
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growing together. The nano-crystals are therefore
capable of trapping the lime in the water and so
reduce limescale deposits within pipes and water
heaters.
The gentle treatment by AQA total retains all essenti-
al minerals in the water, above all calcium.
4. Installation preconditions
Comply with local installation regulations, general
guidelines, general hygiene conditions and techni-
cal data.
The installation location must be protected against
frost and provide protection against chemicals, dyes,
solvents, vapours and environmental influences. The
ambient temperature must not exceed 40°C. Protect
the unit from direct sunshine and UV light.
The water meter area up to 1 m after the AQA total
unit must be corrosion resistant; we recommend the
use of a HydroMODUL domestic water distributor,
which also enables a rapid and cost-effective instal-
lation. The unit must have an upstream DIN/DVGW
(or ÖVGW) certified drinking water filter to protect
against foreign material. A pressure reducer should
be installed upstream to protect the entire installation
and system if there is a network pressure > 4 bar.
For community water supplies, we recommend a
backwash filter (automatic or manual), and a BWT
filter with changeable cartridges for spring water.
Both can be easily docked on to a DR pressure re-
ducer module. At high inlet pressures (e.g.: 10 bar
or more) it may be necessary to install a calming
section downstream of the pressure reducer.
A test section is required for function checks. This can
be easily implemented with 2 HM extensions (= 244
mm) in the HydroMODUL system.
A mains connection (230V/50 Hz fuse contact so-
cket) must be available nearby.
Caution: With pressure fluctuations and
surges, the sum of pressure surge and
pressure at rest must not exceed the nomi-
nal pressure.
The positive pressure surge must not exceed 2 bar
and the negative pressure surge must not exceed
50% of the working pressure that is set (see DIN
1988, Part 2.2.4).
If these conditions are not complied with, the techni-
cal function can not be guarenteed.