E-comfort instant water heater
DEX Next S

Energy efficiency class A

(Scale: A+ to F)

DEX Next S: 18/21/24/27 kW, 400 V

Technical data
Downloads
Accessories

This is where the DEX Next S is used.

Handwashbasin
Shower
Bath tub
Kitchen sink

For your new wellness oasis.

This top device among the E-comfort instant water heaters meets very high comfort requirements.

The new DEX Next S for shower and bath impresses with state-of-the-art technology and durable materials. The compact design is resource-saving. The device is operated in a user-friendly manner via the e-paper display.

The integrated Bluetooth function allows the unit to be controlled by remote control, smartphone or tablet. The use of the app "Smart Control" facilitates the commissioning and maintenance of the instantaneous water heater.

Awards E-comfort instant water heater DEX Next S

Fully electronically controlled high-tech instantaneous water heater with real glass touch display and Bluetooth remote control for convenient and economical hot water supply to one or more tap(s)
Temperature always accurate to the degree between 20 °C and 60 °C thanks to TWIN TEMPERATURE Control TTC^® and SERVOTRONIC^® dynamic flow rate control
In the comfort zone between 35 °C and 43 °C, the temperature can be set in 0.5 degree increments
Bare wire heating system IES® ensures a longer service life, less calcification and is efficient and easy to maintain.
Function for thermal treatment with 70 °C for more hygiene
Particularly air-resistant heating system thanks to innovative heating duct arrangement
Multiple Power System MPS^® determines the maximum power consumption during installation: 18, 21, 24 or 27 kW
Suitable for water-saving taps due to particularly low switch-on water quantity from 1.5 l/min thanks to innovative water flow technology
Integrated WLAN and Bluetooth^® function for connection with smartphone and tablet
Electronic safety system with air bubble detection, temperature and pressure switch-off and water stop function
Dimensions (height × width × depth): 46.8 × 23.9 × 9.6 cm

Technical data

Data. Values. Facts.



DEX Next S

Part number

Nominal power rating ¹⁾ (variably adjustable due to MPS) at 400 V [kW]

Permissible operating pressure [MPa (bar)] ²⁾

Water connections (thread connections)

Hot water output at Δt = 28 K ³⁾ [l/min]

Switch-on flow rate [l/min]

Maximum flow rate: automatic [l/min] ⁴⁾

Supply voltage [3~ / PE 400 V AC] Permanent connection ⁵⁾

Nominal current at 400 V [A]

Required cable diameter [mm²]

Maximum inlet temperature [°C]

Solar-ready ⁶⁾

Protection class

Specific water resistance at 15 °C [Ωcm] ≥

Weight filled with water [kg], approx.

3200-36450
18	21	24	27
1 (10)	1 (10)	1 (10)	1 (10)
G ½"	G ½"	G ½"	G ½"
9.2	10.7	12.3	13.8
1.5	1.5	1.5	1.5


26	30	35	39
4.0	4.0	6.0	6.0
70	70	70	70

IP 25	IP 25	IP 25	IP 25
1100	1100	1100	1100
4.5	4.5	4.5	4.5

1) The selected power rating determines the values of nominal current, cable diameter and hot water output

2) Also approved for pressureless operation

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

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

5) Alternatively connectable to 380 V

6) Suitable for reheating

Downloads

	Media type	Title	Date	Size
Product information sheet DEX-Next-S-PI-en.pdf 21.07.2023 > download	Product information sheet	DEX-Next-S-PI-en.pdf	21.07.2023	487 kB > download
Operating and installation instructions DEX-Next-S-Online-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr.pdf 21.02.2023 > download	Operating and installation instructions	DEX-Next-S-Online-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr.pdf	21.02.2023	32,5 MB > download
		Older versions>
	Operating and installation instructions	DEX-Next-S-Online-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr-05-2022.pdf> download		> download
		Further versions on request
Quick guide DEX-Next-S-KA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr.pdf 10.06.2024 > download	Quick guide	DEX-Next-S-KA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr.pdf	10.06.2024	6,2 MB > download
		Older versions>
	Quick guide	DEX_Next-S-KA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr-01-2023.pdf> download		> download
	Quick guide	DEX-Next-S-KA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr-04-2022.pdf> download		> download
		Further versions on request
Image-only instructions DX3-400V-BiA.pdf 16.05.2022 > download	Image-only instructions	DX3-400V-BiA.pdf	16.05.2022	2,0 MB > download
		Older versions>
	Image-only instructions	DSX-Touch-DFX-Next-BiA.pdf> download		> download
		Further versions on request
Installation accessories DX3-Montageschablone-de-en-fr-nl-pl-cs-sk-pt-es-sv.pdf 13.11.2018 > download	Installation accessories	DX3-Montageschablone-de-en-fr-nl-pl-cs-sk-pt-es-sv.pdf	13.11.2018	370 kB > 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 DEX-Next-S-Energielabel.pdf 28.03.2023 > download	Energy label	DEX-Next-S-Energielabel.pdf	28.03.2023	379 kB > download
ErP product sheet 9120-96xxx-DX3-DEX-Next-S-ErP-Produktdatenblatt.pdf 27.03.2023 > download	ErP product sheet	9120-96xxx-DX3-DEX-Next-S-ErP-Produktdatenblatt.pdf	27.03.2023	102 kB > download
CE Conformity CE-Konformitaetserklaerung-nach-RED+RoHS3-DX3-2023-04.pdf 21.04.2023 > download	CE Conformity	CE-Konformitaetserklaerung-nach-RED+RoHS3-DX3-2023-04.pdf	21.04.2023	3,1 MB > download
Info graphic Smart-Control.pdf 18.05.2022 > download	Info graphic	Smart-Control.pdf	18.05.2022	2,1 MB > download
Catalogue CLAGE-Complete-catalogue-en.pdf 20.12.2024 > download	Catalogue	CLAGE-Complete-catalogue-en.pdf	20.12.2024	11,0 MB > download
Hotnews CLAGE_Hotnews_2023-EN-online.pdf 10.03.2023 > download	Hotnews	CLAGE_Hotnews_2023-EN-online.pdf	10.03.2023	13,9 MB > 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 3 (included)

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

Operating and installation instructionsFX3-GMA-de-en.pdf (1,10 MB)

FXS Next (D) (optional)

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 (D series) included in the scope of delivery of FXS Next, batteries and magnetic wall bracket included in the scope of delivery.

FXS Next (D): Part no. 3200-34025

Operating and installation instructionsFX-Next-Online-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sr-sv-el.pdf (2,15 MB)

RDX 3 (optional)

If required, the universal mounting frame RDX 3 is available as an accessory, with which the electrical connection can be made at any point behind the device. The IP protection class of the device with RDX 3 is IP24. With electrical wiring and pipe extensions. For difficult installation conditions, e.g. replacement of a flow heater with different connections. Compensates for tile projections or wall unevenness. Installation only by a specialist.

RDX 3: Part no. 3200-36100