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These installation and operating instructions are for 

the AQA therm HFB-1717 BA and the AQA therm 

HES. Both units are available separately. This modu-

lar system guarantees optimum flexibility for all ins-

tallation situations. With both systems your heating 

system can be installed with the following cartridges 

in accordance with the relevant standards and can 

be filled and refilled. The AQA therm HRC/hardness-

reducing cartridge only reduces the calcifying subs-

tances in the water. The AQA therm SRC/desalina-

tion cartridge reduces both calcifying and corrosive 

substances in the water. In addition to these water 

treatment procedures, installers must ensure that the 

heating system is correctly planned, installed, com-

missioned and operated in accordance with the rele-

vant standards and BWT specifications.

1. Safety instructions

I.  Refer to the installation instructions.

II.  Use the device

  - in accordance with the specifications

  - in perfect operational conditions

  - in full awareness of the safety procedures and 

potential risks.

III.    Please note that the device is intended for filling 

and  refilling  heating  systems.  Any  use  outside 

the scope of the manual shall be considered 

non-compliance with the specifications.

IV.   Note that all installation, commissioning, main-

tenance and adjustment work must only be car-

ried out by qualified personnel.

V.    Immediately remedy any faults that may compro-

mise safety.

VI.   Treated water has different corrosive chemical 

parameters. In addition to these water treatment 

procedures, installers must ensure that the hea-

ting system is correctly planned, installed, com-

missioned and operated in accordance with the 

relevant standards and BWT specifications.

VII.   If the drinking water is heated via the heating 

system and category 4 or 5 liquids are present, 

any components that come into contact with 

such must be double-walled. Demineralised wa-

ter (AQA therm SRC) corresponds to category 2 

pursuant to EN 1717 Annex B.

2. Description of functions

AQA therm HFB 1717 BA

The AQA therm HFB-1717 BA comprises a backflow 

preventer, pressure reducer and shut-off ball valves 

and is designed to provide a secure, standardised 

connection between the heating system and the drin-

king water supply. The integrated backflow preventer 

and pressure reducer must be used to connect the 

heating system permanently to the drinking water 

system, allowing the heating system to be refilled at 

any time.

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 optional sof-

tening cartridges (AQA therm HRC) or desalination 

cartridges (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.

Function of the backflow preventer

(AQA therm HFB-1717 BA)

The backflow preventer is a back-up valve compliant 

with DIN EN 1717 and prevents the back pressure, 

backflow and return of polluted water into the supply 

line, into external systems or other system compo-

nents.  The  backflow  preventer  is  divided  into  three 

chambers (inlet, intermediate and outlet pressure 

chamber). If no water is drawn, the backflow preven-

ter remains in idle mode under operating pressure. 

The  inlet-  and  outlet-side  backflow  preventers  and 

the drain valve are closed. When water is drawn, 

the backflow preventer is in the flow rate setting. The 

inlet-  and  outlet-side  backflow  preventers  are  ope-

ned and the drain valve is closed. If the differential 

pressure between the inlet pressure and intermediate 

pressure chamber falls below 0.14 bar, the backflow 

preventer moves into the isolated position (return). 

The backflow preventer on the inlet side closes and 

the drain valve opens.

Function of the pressure reducer

(AQA therm HFB-1717 BA)

The pressure reducer reduces the inlet-side pressure 

(inlet pressure) at the required pressure on the outlet 

side (outlet pressure). The pressure reducer operates 

on the force-balance principle. The diaphragm force 

pushes against the spring force of the control valve. 

If the outlet pressure decreases when water is drawn, 

and with it the diaphragm force, a stronger spring 

force, then opens the valve. The outlet pressure conti-

nues to rise until a state of equilibrium is reached bet-

ween the diaphragm and spring force. Inlet pressure 

has no effect on the control valve in the pressure re-

ducer. Pressure fluctuations on the inlet side do not af-

fect the outlet pressure (inlet pressure compensation). 

The AQA therm HFB-1717 BA can be permanently 

connected to the drinking water supply by a hose or 

pipe in accordance with DIN EN 1717 (plastics and 

6280_EBA AQA therm HFB_HES_HWG_313660-5.indd   15

24.09.15   09:09

Summary of Contents for 51094

Page 1: ...e Rechtsverbindlichkeit Im brigen gelten unsere allgemei nen Gesch ftsbedingungen nderungen vorbehalten Important notice Always keep the fitting and operating instructions close at hand to avoid any m...

Page 2: ...eines BWT Ger tes entgegengebracht haben Thank you very much for the con fidence that you have shown in us by purchasing a BWT appliance Inhaltsverzeichnis Seite 3 Table of contents Page 13 DE EN 628...

Page 3: ...A therm HES Generation 2016 mit Smart Setup und Smart Operation 9 8 3 Anlage Sp len 8 8 4 Anlage Erstbef llung 9 8 5 Anlage nachf llen 9 8 6 Austausch der ersch pften Kartusche 9 8 7 Einbau einer neue...

Page 4: ...ehmbaren Einstellgriff 4 Optional AQA therm HRC oder SRC 5 Wasserz hler mit Smart Operation Display 6 Entl ftungsventil B gelwasser Tankstelle 8 Ablassventil mit HT Rohranschluss 9 Absperrkugelhahn 8...

Page 5: ...1717 BA besteht aus einem Systemtrenner Druckminderer und Absperrkugel h hnen und dient zum sicheren und normgerechten Anschluss der Heizungsinstallation an die Trinkwas serversorgung Durch den einge...

Page 6: ...hen Erdalkalien wie Calcium und Magnesium durch Natriumionen oder mit der SRC Salze Reduzierende Kartusche nicht nur Kalk sondern auch korrosionverursachende Wasserinhalts stoffe werden reduziert Die...

Page 7: ...chst den AQA therm HFB 1717 BA dann unmittelbar danach die AQA therm HES installieren Bei der Montage sind die nationalen Installationsvorschriften zu beachten 7 2 Einbau Um stagnierendes Wasser zu ve...

Page 8: ...schalten relevante Daten ablesen Steuersignale an ein Magnetventil senden erh ltlich ab Q4 2016 eine SMS Box f r Alarmmeldung auf ein Mobiltelefon bei ersch pfter Kartusche anschlie en erh ltlich ab...

Page 9: ...ahre im Einsatz ist blinkt die Serviceanzeige rot und gibt einen Piepton ab Werkseitig Ton ein zum Ausschalten 8 3 Punkt h beachten b Kartusche ber das Entl ftungsventil druck entlasten c Kartusche vo...

Page 10: ...mittel benutzen da diese zu Wassersch den f hren k nnen Es d rfen keine Reinigungsmittel in die Umwelt oder Kanalisation gelangen 1 Absperrkugelhahn eingangsseitig an dem AQA therm HFB 1717 BA und aus...

Page 11: ...llen AQA therm H rte Reduzierende Kartusche HRC oder Salze Reduzierende Kartusche SRC verbraucht Kartusche HRC SRC gegen neue tauschen eingetragene Schmutzpartikel in den Verschneide ffnungen Kartusch...

Page 12: ...66 336 30 87 427 900 160 325 31 84 413 930 155 315 32 81 400 960 150 305 33 79 388 990 145 295 34 76 376 1020 141 287 35 74 366 1050 137 279 36 72 356 1080 133 271 37 70 346 1110 130 264 38 68 337 114...

Page 13: ...2 Setting AQA therm HES generation 2016with smart set up and smart operation 18 8 3 Flushing the system 19 8 4 Initial system filling 19 8 5 System refilling 19 8 6 Replacing depleted cartridges 19 8...

Page 14: ...removable adjustment handle 4 Optional AQA therm HRC or SRC 5 Water meter with smart operation display 6 Bleed valve distilled water filling point 8 Drain valve with pipe connection 9 Shut off ball v...

Page 15: ...educer must be used to connect the heating system permanently to the drinking water system allowing the heating system to be refilled at any time The BA installed AQA therm HES which is installed imme...

Page 16: ...he inte grated smart electrical water meter enables users to register the flushing filling and refilling volumes at all times 3 Application 4 Technical data AQA therm HFB 1717 BA Medium Water Inlet pr...

Page 17: ...ighly visible for easy monitoring First install the AQA therm HFB 1717 BA in the flow rate direction and then install the AQA therm HES immediately after it During installation please comply with nati...

Page 18: ...e from Q4 2016 c The assigned selection fields in the display move with each keystroke to the selected position The selection is logged if you pause on the position for more than 3 seconds d If the AQ...

Page 19: ...i se from the AQA therm HES d Dispose of used cartridges in domestic waste plastic recycling 8 7 Installing new cartridges a Remove the cartridge from its packaging and check for any damage or defects...

Page 20: ...ssurise the outlet side by opening the sam pling valve bleed valve on the AQA therm HES 3 Unscrew the cover of the backflow preventer core 4 Remove the backflow preventer core and filter 5 Remove the...

Page 21: ...nge AQA therm hardness reducing cartridge HRC or desalination cartridge SRC depleted Replace HRC SRC cartridge with a new one Impurities have entered the mixing inlets Flush HRC SRC cartridge 11 Fault...

Page 22: ...441 870 166 336 30 87 427 900 160 325 31 84 413 930 155 315 32 81 400 960 150 305 33 79 388 990 145 295 34 76 376 1020 141 287 35 74 366 1050 137 279 36 72 356 1080 133 271 37 70 346 1110 130 264 38 6...

Page 23: ...23 EN 6280_EBA AQA therm HFB_HES_HWG_313660 5 indd 23 24 09 15 09 09...

Page 24: ...BWT France SAS 103 rue Charles Michels F 93206 Saint Denis Cedex Phone 33 1 49 22 45 00 Fax 33 1 49 22 45 45 E Mail bwt bwt fr BWT UK Limited BWT House The Gateway Centre Coronation Road High Wycombe...

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