Application; Technical Data - BWT AQA therm HFB1717 BA Einbau- Und Bedienungsanleitung

EN
drinking water (German: KTW)) approval required
for the hose).
After filling, the shut-off device must be activated to
prevent uncontrolled refilling of the heating system.
Function of the AQA therm HES
The BA-installed AQA therm HES, which is installed
immediately after the AQA therm HFB-1717, compri-
ses a water meter, a docking point for an optional
softening cartridge (AQA therm HRC) or desalination
cartridge (SRC), an integrated shut-off ball valve and
a distilled water filling point (warning: non-potable
water!). This is used for softening/desalination and
to register the flushing, filling and refilling volumes.
AQA therm HES works either with the AQA therm
HRC/hardness-reducing cartridge, using the ion
exchange principle (whereby alkaline earth metals
found in the water, like calcium and magnesium, are
replaced with sodium ions), or with the SRC/desali-
nation cartridge (reduces both calcifying and corrosi-
ve substances in the water).
Desalination without additives is preferred. The inte-
grated 'smart' electrical water meter enables users to
register the flushing, filling and refilling volumes at all
times.

3. Application

AQA therm HFB-1717 BA
Medium
Inlet pressure
Outlet pressure
Liquid category back-
flow preventer BA
AQA therm HES
Medium
Inlet pressure
16
6280_EBA AQA therm HFB_HES_HWG_313660-5.indd 16
Water
max. 10.0 bar
adjustable from 1.5–4 bar
preset to 1.5 bar
4 (toxic, extremely toxic, carci-
nogenic, radioactive materials)
Water
max. 4 bar

4. Technical data

AQA therm HFB-1717 BA
Mounting position Horizontal with drainage con-
Operating temperature
Pressure reducer
Ball valve connection
Backflow preventer
Drainage connection
Connection size
AQA therm HES
Mounting horizontal with cartridge directed
position downwards, cartridge optional
Operating Feed water max. 30 °; device
temperature temperature max. 50 °C with shut-off
ball valve (closed) using the heating
system's temperature transfer; ambient
temperature max. 40 °C
Connection size
Connection size R
Dimensions H
h1
h2
h3
L
l1
l2
Kvs value m /h
3
nection directed downwards
max. 65 °C
G 1/4"
HT 40
½" external thread
1/2"
1/2"
519.3 mm
58.4 mm
460.9 mm
142.5 mm
450.1 mm
140.5 mm
158.1 mm
max 0.75
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