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Comfort instantaneous water heaters
PER 18/21/24

  • 360°
    • Maximum convenience thanks to full electronic closed-loop control
    • Accurate temperature delivery at all times due to automatic flow rate control
    • Remote control included (up to 25 m range)
    • High energy efficiency – up to 30% savings possible compared with hydraulic instantaneous water heaters
    • Particularly economical operation with ECO mode
    • Extensive range of convenience and safety functions
    • Suitable for preheated water up to 45 °C
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    Product details

    Use water your way

    Every one of our fully electronic instantaneous water heater models provides hot water at the exact temperature you have set at all times. No ifs or buts. To make this work, the appliances compensate for all external influences. As a result, only the water you want comes out of your tap. How about that for convenience?

    Know exactly what's going on
    The digital multifunction display clearly shows you your preferred water temperature and the ECO level. Use the two memory buttons to quickly select your individual temperatures of choice. In addition, further convenience and safety functions are available.


    ERP product datasheet
    Reach-Information
    Technical datasheet

    Product Number: 233990

    Rated voltage: 400 V

    Rated voltage 1: 380 V

    Rated voltage 2: 400 V

    Rated voltage 3: 415 V

    Rated output: 18/21/24 kW

    Rated output 1: 16,2/19/21,7 kW

    Rated output 2: 18/21/24 kW

    Rated output 3: 19,4/22,6/25,8 kW

    Rated current: 29/31/35 A

    Rated current 1: 27,6/29,5/33,3 A

    Rated current 2: 29/31/35 A

    Rated current 3: 30,1/32,2/36,3 A

    Fuse protection: 32/32/35 A

    Fuse protection 1: 32/32/35 A

    Fuse protection 2: 32/32/35 A

    Fuse protection 3: 32/32/40 A

    Frequency: 50/60 Hz

    Frequency 1: 50/60 Hz

    Frequency 2: 50/60 Hz

    Frequency 3: 50/- Hz

    Phases: 3/PE

    Temperature setting: 30-60 °C

    Colour: white

    Height: 485 mm

    Width: 226 mm

    Depth: 93 mm

    Weight: 3.80 kg

    Energy efficiency class: A

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Installation Information:

Please ask your local power supply utility or a registered electrician to install appliances that are not fully wired, i.e. ready to plug in. The electrician should also be able to assist you with obtaining the agreement of the respective power supply utility required for the appliance installation.