E-comfort instant water heater
DEX Next

E-comfort instant water heater DEX 12

Energy efficiency class A

(Scale: A+ to F)

  • DEX Next: 18/21/24/27 kW, 400 V
  • DEX 12 Next: 8.8/11.5 kW, 220–240 V

This is where the DEX Next is used.

  1. Handwashbasin

    Handwashbasin

  2. Shower

    Shower

  3. Bath tub

    Bath tub

  4. Kitchen sink

    Kitchen sink

Convenient, economical and reliable.

New product
The new DEX Next is comfortable, economical and reliable. The high-contrast e-paper display behind the high-quality real glass cover is particularly impressive.

Awards E-comfort instant water heater DEX 12 Next
  • Electronically controlled comfort instantaneous water heater with real glass e-paper display and sensor keys for high ease of use
  • The Multiple Power System MPS® determines the maximum power consumption during installation: 18, 21, 24 or 27 kW.
  • TWIN TEMPERATURE Control TTC® for temperatures accurate to the degree between 20 °C and 60 °C up to the performance limit
  • In the comfort zone between 35 °C and 43 °C, the temperature can be set in 0.5 degree increments
  • For water-saving taps suitable due to particularly low switch-on water quantity from 1.5 l/min thanks to innovative water flow technology
  • Practically air-resistant heating system thanks to innovative heating channel arrangement
  • Blankdraht-Heizsystem IES® ensures a longer service life, less calcification and is efficient and easy to maintain
  • Electronic safety system with air bubble detection, temperature and pressure switch-off
  • Module for radio remote control available as an accessory
  • Can also be operated via tablet or smartphone (from iOS 9 / Android-OS 4.4) (this requires a FXE 3 radio adapter and the "Smart Control" app)
  • Dimensions (height × width × depth): 46.8 × 23.9 × 9.6 cm

Technical data for DEX Next

>

Data. Values. Facts.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
E-comfort instant water heater DCX
Handwashbasin Shower Bath tub Kitchen sink      
DEX Next
Part number
Nominal power rating 1) (variably adjustable due to MPS) [kW]
Permissible operating pressure [MPa (bar)]
Water connections (thread connections)
Hot water output at Δt = 28 K 2) [l/min]
Switch-on flow rate [l/min]
Maximum flow rate 3) [l/min]
Supply voltage [3~ / PE 380-415  V AC] permanent connection
Supply voltage [3~ / PE 400  V AC] permanent connection
Nominal current [A]
Required cable diameter 4) [mm²]
Maximum inlet temperature [°C]
Solar Ready
Protection class
Specific water resistance at 15 °C [Ωcm] ≥
Weight filled with water [kg], approx.
3200-36300
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
8.0 8.0 8.0 8.0
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
4.2 4.2 4.2 4.2

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

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

3) Limited flow amount for optimal temperature increase

4) Depending on the selected power rating

5) Suitable for reheating

Technical data for DEX 12 Next

>

Data. Values. Facts.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
E-comfort instant water heater DEX 12
Handwashbasin Shower Bath tub Kitchen sink  
DEX 12 Next
Part number
Nominal power rating 1) (variably adjustable due to MPS) [kW]
Maximum operating pressure [MPa (bar)]
Water connections (thread connections)
Hot water output at Δt = 28 K 2) [l/min]
Switch-on flow rate [l/min]
Maximum flow rate 3) [l/min]
Supply voltage [1~ / N / PE 220–240 V AC] permanent connection
Nominal current [A] at 230 V
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.
3200-36212
8.8 11.5
1 (10) 1 (10)
G ½" G ½"
4.5 5.9
2.5 2.5
5.0 5.0
38.0 50.0
10 10
70 70
IP 25 IP 25
1300 1300
4.2 4.2

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

2) Temperature increase e.g. from 12 °C to 40 °C (mixed water at flow rate >5 l/min)

3) Limited flow amount for optimal temperature increase

4) Suitable for reheating

Downloads for DEX Next & DEX 12 Next

>

Media Title Date Size
DEX Next FXS Installation and Operating Booklet FXS Installation and Operating Booklet.pdf 01.01.2021 759 kB
> download
DEX Next Operating and Installation Booklet Operating and Installation Booklet.pdf 01.01.2021 759 kB
> download
DEX Next Quick Guide Quick Guide.pdf 01.01.2021 6,7 MB
> download
DEX Next Safety Instructions Safety Instructions.pdf 01.01.2021 6,7 MB
> download
DEX Next Technical Data Sheet Technical Data Sheet.pdf 01.01.2021 759 kB
> download
DEX 12 Next Operating and Installation Booklet.pdf Operating and Installation Booklet.pdf 01.01.2021 6,7 MB
> download
DEX 12 Next Safety Instructions Safety Instructions.pdf 01.01.2021 6,7 MB
> download
DEX 12 Next Technical Data Sheet Technical Data Sheet.pdf 01.01.2021 759 kB
> download

Interesting features.

  1. Smart Control-ready

    Smart Control-ready

  2. Bluetooth remote control (optional)

    Bluetooth remote control (optional)

  3. Solar-compatible, suitable for reheating

    Solar-compatible, suitable for reheating

Installation video

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