E-module instantaneous water heater
ISX 12

Energy efficiency class A

(Scale: A+ to F)

ISX 12: 8.8/11.5 kW, 240 V

Technical data
Downloads
Accessories

This is where the ISX 12 is used.

Handwashbasin
Shower
Bath tub
Kitchen sink

ISX 12: Hidden in the wall!
Integrated, robust and smartly networked

Product innovation
The new ISX 12 e-module instantaneous water heater has been specially developed for flush-mounted / pre-wall installation. Its concept is ideal for flexible integration into the building infrastructure: it enables simple installation without wall brackets and without removing the hood.

Awards E-module instantaneous water heater ISX 12

Fully electronically controlled modular instantaneous water heater with sensor keypad and LED display for convenient and economical hot water supply to one or more draw-off points
Temperature setting, definition of individual temperature profiles and viewing of consumption values via the supplied e-paper remote control FX Next or optionally via smartphone
Always temperature accurate to the degree between 20 °C and 60 °C thanks to TWIN TEMPERATURE Control TTC® and dynamic flow rate control SERVOTRONIC®
Bare wire heating system IES® ensures a longer service life, less scaling and is efficient and easy to maintain
Electronic safety system with air bubble detection, temperature and pressure shut-off, and water stop function
Multiple Power System MPS® determines the maximum power consumption at installation: 8.8 or 11.5 kW
Exceptionally low switch-on water flow from 1,5 l/min thanks to innovative water flow technology
IntegratedWLAN and Bluetooth® function for connection with smartphone and tablet (the free "Smart Control" app is required for this)
Modbus interface for integration into building services
Suitable for reheating preheated water (supply temperature up to 70 °C permissible)
Directinstallation option as part of a pre-wall installation (if required in the optionally available CLAGE flush-mounted cabinet with inspection flap), in drywall or above a suspended ceiling (without separate wall bracket)
Assembly and electrical connection possible without removing the hood
Free access water connection from below with ½ inch external thread and shut-off valve
Dimensions (height × width × depth): 40.2 × 27.8 × 9.9 cm

Technical data

Data. Values. Facts.



ISX 12

Part number

Nominal power rating at 230 V [kW]

Permissible operating pressure [MPa (bar)] ¹⁾

Water connections (thread connections)

Hot water output at Δt = 28 K ²⁾ [l/min]

Switch-on flow rate [l/min]

Maximum flow rate: automatic [l/min] ³⁾

Supply voltage [1~ / N / PE 220–240 V AC] permanent connection

Nominal current at 230 V [A]

Required cable diameter [mm²]

Maximum inlet temperature [°C]

Solar-ready ⁴⁾

Protection class

Specific water resistance at 15 °C [Ωcm] ≥

Weight filled with water [kg], approx.

3200-36712
8.8	11.5
1 (10)	1 (10)
G ½"	G ½"
4.5	5.9
1.5	1.5


38.3	50.0
10	10
70	70

IP 21	IP 21
1300	1300
4.5	4.5

1) Also approved for pressureless operation

2) Temperature increase e.g. from 12 °C to 40 °C, mixed water

3) Depending on line pressure, selected temperature and inlet temperature

4) Suitable for reheating

Downloads

	Media type	Title	Date	Size
Product information sheet ISX12-PI-en.pdf 04.01.2024 > download	Product information sheet	ISX12-PI-en.pdf	04.01.2024	739 kB > download
Quick guide ISX12-KA-de-en-11-2023-Laserdruck.pdf 02.11.2023 > download	Quick guide	ISX12-KA-de-en-11-2023-Laserdruck.pdf	02.11.2023	2,6 MB > download
Safety instructions Sicherheitshinweise-Durchlauferhitzer-de-en-fr-nl-pt-es-pl-sv-cs-sk-bg-no-fi-ru-sr-el-it-tr-ro.pdf 03.11.2023 > download	Safety instructions	Sicherheitshinweise-Durchlauferhitzer-de-en-fr-nl-pt-es-pl-sv-cs-sk-bg-no-fi-ru-sr-el-it-tr-ro.pdf	03.11.2023	371 kB > download
Energy label ISX12-Energielabel_2023.pdf 11.01.2024 > download	Energy label	ISX12-Energielabel_2023.pdf	11.01.2024	1,8 MB > download
ErP product sheet ISX12-ISX13-ISX27-ErP-Produktdatenblatt.pdf 28.09.2023 > download	ErP product sheet	ISX12-ISX13-ISX27-ErP-Produktdatenblatt.pdf	28.09.2023	101 kB > download
Datanorm Datanorm.zip 03.06.2024 > download	Datanorm	Datanorm.zip	03.06.2024	40 kB > download
GAEB GAEB.zip 03.06.2024 > download	GAEB	GAEB.zip	03.06.2024	725 kB > download

Accessories

FX Next (included)

Bluetooth radio remote control for electronic instantaneous water heaters, temperature selection and settings via sensor keys in an intuitive menu navigation, with e-paper display, Bluetooth connection for secure data transmission between radio remote control and instantaneous water heater, FXE 3 radio adapter for installation in the instantaneous water heater included in the scope of delivery of FXS Next, batteries and magnetic wall bracket included in the scope of delivery.

FX Next: Part no. 3200-34023

FX 3 (optional)

Additional remote control for convenient temperature adjustment of the instantaneous water heater over a distance of approx. 10 metres in the building. Secure, Bluetooth® wireless transmission, stepless temperature selection via two keys, two fixed value keys and an LCD display, magnetic wall bracket and batteries (included). IP 20. Dimensions (H × W × D): 5.8 × 12.5 × 1.9 cm

FX 3: Part no. 3200-34021