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E-compact instant water heater
CFX-U

E-compact instant water heater CFX-U

Energy efficiency class A

(Scale: A+ to F)

  • CFX-U: 11/13.5 kW, 400 V

This is where the CFX-U is used.

  1. Kitchen sink

    Kitchen sink

  2. Washstand

    Washstand

  3. Double washbasin

    Double washbasin

Efficiency and convenience in one sweep.

Product innovation
An especially smart solution for energy-efficient hot water supply at the kitchen sink is the new E-compact instant water heater CFX-U. While the compact and space-saving unit is installed under the kitchen sink, the temperature of the instant water heater can be conveniently controlled via remote control. You can preselect the perfect temperature and avoid heat losses due to mixed water.

Awards E-compact instant water heater CFX-U
  • Electronically controlled instant water heater in compact design and Bluetooth remote control for installation under the sink
  • Temperature setting between 20 °C and 60 °C via sensor keys and e-paper display on the bidirectional remote control
  • Energy monitoring: The consumption values of electricity and hot water can be shown on the remote control display
  • In the comfort zone between 35 °C and 43 °C, the temperature can be set in 0.5 degree increments
  • Adding cold water is no longer necessary
  • Easy installation under the kitchen sink facilitated by small dimensions and external ⅜" water connectors for closed-outlet or open-outlet installation
  • Precise temperatures due to TWIN TEMPERATURE control TTC® up to the capacity of the appliance
  • Bare wire heating system IES® ensures longer life, less calcification and is efficient and easy to maintain
  • With the Multiple Power System MPS®, the maximum power rating is set at the time of installation
  • Can also be controlled via tablet or smartphone (from iOS 9 / Android-OS 4.4) (the "Smart Control" app is required for this)
  • Suitable for solar systems (inlet temperature ≤ 60 °C)
  • With power cable for permanent electrical connection
  • Dimensions (height × width × depth): 29.4 × 17.7 × 10.4 cm

Technical data

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Data. Values. Facts.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
E-compact instant water heater CFX-U
Kitchen sink Washstand Double washbasin  
CFX-U
Part number
Nominal power rating 1) (variably adjustable due to MPS) at 400 V [kW]
Maximum operating pressure [MPa (bar)]
Water connections (thread connections)
Hot water output at Δt = 33 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
Nominal current at 400 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.
2400-26513
11.0 13.5
1 (10) 1 (10)
G ⅜" G ⅜"
4.8 5.8
2 2
5 5
16 20
1.5 2.5
60 60
IP 24 IP 24
1000 1000
2.7 2.7

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 45 °C (mixed water at flow rate >5 l/min)

3) Limited flow amount for optimal temperature increase

4) Suitable for reheating

Downloads

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Media type Title Date Size

Product information sheet

CFX-U-PI-en.pdf

23.12.2021

> download
Product information sheet CFX-U-PI-en.pdf 23.12.2021 531 kB
> download

Operating and installation instructions

CX3-CEX-CEX7-CFX-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sv-el.pdf

11.04.2022

> download
Operating and installation instructions CX3-CEX-CEX7-CFX-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sv-el.pdf 11.04.2022 6,8 MB
> download
  Older versions> 
 Operating and installation instructionsCX3-CEX-CFX-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sv-el-03-2022.pdf> download> download
 Operating and installation instructionsCX3-CEX-CFX-GMA-de-en-fr-nl-pt-es-pl-ru-cs-sk-bg-sv-el-04-2021.pdf> download> download
  Further versions on request 

Image-only instructions

CX3-400V-Bilderanleitung-Untertisch.pdf

15.09.2021

> download
Image-only instructions CX3-400V-Bilderanleitung-Untertisch.pdf 15.09.2021 883 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

19.03.2021

> 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 19.03.2021 483 kB
> download

Energy label

CFX-U-Energielabel.pdf

13.02.2017

> download
Energy label CFX-U-Energielabel.pdf 13.02.2017 220 kB
> download

CE Conformity

CE-Konformitaetserklaerung-nach-RED+RoHS3-CX-2021-09.pdf

05.11.2021

> download
CE Conformity CE-Konformitaetserklaerung-nach-RED+RoHS3-CX-2021-09.pdf 05.11.2021 752 kB
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Product photo

CFX-U-CX3-Produktfoto-links.jpg

22.12.2021

> download
Product photo CFX-U-CX3-Produktfoto-links.jpg 22.12.2021 68 kB
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Product photo

CFX-U-CX3-Produktfoto-rechts.jpg

22.12.2021

> download
Product photo CFX-U-CX3-Produktfoto-rechts.jpg 22.12.2021 412 kB
> download

Product photo

CFX-U-CX3-Produktfoto-frontal.jpg

23.12.2021

> download
Product photo CFX-U-CX3-Produktfoto-frontal.jpg 23.12.2021 823 kB
> download

Product photo

CFX-U-CX3-FX-Next-Produktfoto.jpg

18.05.2022

> download
Product photo CFX-U-CX3-FX-Next-Produktfoto.jpg 18.05.2022 62 kB
> download

BIM

CX3-CFX-U_BIM.rfa

11.05.2022

> download
BIM CX3-CFX-U_BIM.rfa 11.05.2022 1,0 MB
> download

BIM

CX3-CFX-U_BIM.ifc

11.05.2022

> download
BIM CX3-CFX-U_BIM.ifc 11.05.2022 1,8 MB
> download

Accessories

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FVS

FVS (included)

Flexible connecting hose ⅜ inch cap nut × ⅜ inch cap nut, length 50 cm

FVS: Part no. 89620

T-piece

T-piece (included)

Special T-connector ⅜ inch cap nut × ⅜ inch angle valve 10 mm

T-piece: Part no. 89610

CSP 6

CSP 6 (optional)

Aerator insert for tap adapter M 22/24 at the tap. The aerator at the tap supports the energy- and water-saving operation of the compact instant water heater. The new special CSP aerators mix air into the water and thus create a uniform water stream that does not splatter but softly cascades down. CSP 6 (< 3,5 l/min).

CSP 6: Part no. 0010-00461

CSP 6a

CSP 6a (optional)

Aerator with chrome tap adapter M 24a (suitable for taps with internal thread at outlet). The aerator at the tap supports the energy- and water-saving operation of the compact instant water heater. The new special CSP aerators mix air into the water and thus create a uniform water stream that does not splatter but softly cascades down. CSP 6a (< 3,5 l/min).

CSP 6a: Part no. 0010-0047

CSP 6i

CSP 6i (optional)

Aerator with chrome tap adapter M 22i (suitable for taps with external thread at outlet). The aerator at the tap supports the energy- and water-saving operation of the compact instant water heater. The new special CSP aerators mix air into the water and thus create a uniform water stream that does not splatter but softly cascades down. CSP 6i (< 3,5 l/min).

CSP 6i: Part no. 0010-0046

EAK

EAK (optional)

Single-lever mixer tap with side lever and swivel spout 20 cm

EAK: Part no. 1100-04430

(optional)

: Part no. 1100-04235

BBW

BBW (optional)

Accessories for sensor armature for power supply with one battery 6  V Lithium CRP 2. cable length approx. 10  cm, Ø 6  cm

BBW: Part no. 89516

SNG

SNG (optional)

Accessories for sensor armature EKE: power supply unit 1~ / N / PE 230  V AC / 6  V DC. Cable length approx. 70  cm

SNG: Part no. 89484

FX 3

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

LAB

LAB (optional)

Load shedding module (electrical installation kit) with pre-installed cables, contactor and load shedding relay, for joint connection of an instant water heater with an output ≤ 13,5 kW and an electromechanical cooker at a cooker terminal outlet box, if no separate outlet is available for the instant water heater. IP 55. Dimensions (H × W × D): 18 × 13 × 8 cm

LAB: Part no. 82260

Interesting features.

  1. Smart Control-ready

    Smart Control-ready

  2. Bluetooth remote control included

    Bluetooth remote control included

  3. Solar-compatible, suitable for reheating

    Solar-compatible, suitable for reheating

Installation video

Similar products:

E-compact instant water heater CEX-U
CEX-U: 11/13.5 kW, 400 V