Stiebel Eltron
Stiebel Eltron

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DHE Instantaneous 3 Phase Water Heater


Overview

Instant hot water on demand, delivered with precision.

The Stiebel Eltron DHE instant hot water system provides instant hot water controlled to the nearest degree due to its sophisticated design.  The system actively compensates for any fluctuations in incoming cold water temperature and pressure to ensure that hot water is always available at exactly the required temperature.  

For maximum user convenience, an optional wireless remote control unit allows you to control the DHE electronic comfort system. Even installation is convenient: the unit fits almost anywhere - they can even be mounted over or underneath a sink, in a cupboard or in a Euro laundry; just to name a few options.

The DHE, winner of the International Red Dot Design Award for product innovation, is a masterpiece of modern technological efficiency.

Made in Germany, high quality design from Stiebel Eltron

  • Accurate delivery of the required hot water temperature selected, the DHE automatically adjusts flow to deliver precise temperature
  • Bare wire element complete with pressure-tested copper casing is suited to both soft and hard water areas
  • Electronic safety system with air detection
  • WaterMark Lic No. WMKA00301, AS3498
  • Memory function and shower functions
  • Electronic safety system with air detection
  • Radio remote control (optional accessory)
  • WaterMark approved, licence number WMKA00301, AS3498
  • Temperature selection between 20-60° Celsius

Pre-heating capabilities

  • Can accept pre-heated water (up to 55°C), E.g. for reheating with a solar heating system

Installation flexibility

  • Compact space saving design for installation flexibility
  • No safe tray, flue or ventilation required
  • Electronically controlled to accurately regulate the output water temperature, compensates for fluctuations in pressure and temperature changes

Efficiency monitoring

  • Easy to read backlight display, changes from amber to green when operating in an ECO mode
  • The display shows the current water and energy consumption.
  • Economy monitor shows energy, water and CO2 savings compared to a hydraulic instantaneous water heater

Available in electrical size:

  • DHE 18 - 19.6kW, 27 Amps per phase, three phase 415V
  • DHE 27 - 29.1kW, 40 Amps per phase, three phase 415V

Warranty

  • 5 Year full parts and labour domestic warranty*

*Conditions apply - refer warranty policy for full details.

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Applications

  • Bathrooms
  • Apartments
  • Factory bathrooms or sinks
  • Kitchenettes
  • Restaurants
  • Cafes
  • Office fit outs
  • Shools
  • Gyms
  • Hair salons

Frequently Asked Questions

(Q 1 )
How do I know if I have 3 phase power?

Contact your energy supplier and advise your address. They can confirm if you have 3 phase power available to your house.

(Q 2 )
I have 3 phase power to my house, can I install a DHE instant water heater?

You will need to check with your electrician to find out how much 3 phase power is available in “amps per phase”. The DHE 18 unit requires 27Amps per phase whereas the DHE 27 requires 40Amps per phase.

(Q 3 )
I have a 3 phase electric instantaneous unit I want to replace, what Stiebel Eltron system should I select?

You will need to confirm the amperage supply to the hot water unit from the circuit breaker in the switchboard. Please contact us to confirm the appropriate hot water system.

(Q 4 )
What size instantaneous electric water heater do I need for my apartment or house?

In a house with 1 bathroom a 19.6kW 3 phase electric instantaneous water heater (E.g. DHE 18, DEL 18 or DHB-E18) is suitable.  In a house with 2 bathrooms, a 29.1kW 3 phase electric instantaneous water heater (E.g. DHE 27, DEL 27or DHB-E27) should be selected.

(Q 5 )
How can I tell what size Stiebel Eltron DHE water heater I have now?

Underneath the dial that adjusts the temperature there is a pull down flap. Pull down the flap, a rating label is located up under the flap showing the model and size – DHE 27 or DHE 18.  Within the downloads section of the DHE you can download a pdf showing you exactly where and how to locate this sticker.

(Q 6 )
What temperature hot water can the DHE water heater deliver?

The DHE 18 and DHE 27 can deliver hot water at 60 Degress Celsius.  If supplying hot water for a domestic bathroom, the plumbing regulations require the installation of temperature control device to supply water not exceeding 50 Degrees Celsius.  Alternatively, the Stiebel Eltron DEL instantaneous electric water heater may be a suitable choice which delivers hot water not exceeding 50 Degrees Celsius in accordance with AS3498.  Click on the DEL product to find out more.

(Q 7 )
Where can I install the unit?

The water heater can be installed almost anywhere due to the compact size.  The water heater does not require ventilation, relief drain or safe trays so it can be installed in a cupboard, in the roof space, below the sink, in a service cavity, in a Euro laundry just to name a few options.

(Q 8 )
I have an old DHE 21 electric instantaneous water heater but cannot see this model on this website anymore. Can I replace this model?

This model is no longer available and has been replaced with the DHE 18 3 phase electric instantaneous water heater.

(Q 9 )
How far can the water heater be installed from the hot water outlet?

The DHE is designed to be installed as close as practical to the most used hot water outlet.  Installing closer to the point of use can help to save water and energy by delivering hot water quickly to the outlet.   The Stiebel Eltron 3 phase electric instantaneous water heaters are designed to service multiple outlets located several metres away from the system.

(Q 10 )
How efficient is this unit compared to a storage electric system?

Compared to a storage hot water unit it will be at up to 20-30% more efficient. This is due to not storing any hot water and having heat losses.

(Q 11 )
Where can I purchase one of these units?

All the major plumbing supply merchants can supply our products, please contact us on 1800 153 351 for your nearest supplier.

Model Number
DHE 18 Instantaneous 3 Phase Electric Water Heater
Type of System Three Phase Mains Pressure Electric Instantaneous
Electrical Connection 19.6kW / 3 Phase 415V / 27Amps Per Phase
Electrical Installation As per AS3000
Current Draw 27 Amps
Plumbing Installation As per AS3500.4.2 and local authority regulations
Temperature Selection 20-60 Degrees Celsius
Permissable Operating Pressure 1000kPa
Switch On Flow Rate 2.5 Litres Per Minute
WaterMark Approval Lic No. WMKA00301, AS3498
Element type Bare wire, suitable for water with high mineral content
Dimensions  
Height 478mm
Width 225mm
Depth 105mm
Weight filled with water 5.5kg

 

Model Number
DHE 27 Instantaneous 3 Phase Electric Water Heater
Type of System Three Phase Mains Pressure Electric Instantaneous
Electrical Connection 29.1kW / 3 Phase 415V / 40Amps Per Phase
Electrical Installation As per AS3000
Current Draw 40 Amps
Plumbing Installation As per AS3500.4.2 and local authority regulations
Temperature Selection 20-60 Degrees Celsius
Permissable Operating Pressure 1000kPa
Switch On Flow Ratte 2.5 Litres Per Minute
WaterMark Approval Lic No. WMKA00301, AS3498
Element type Bare wire, suitable for water with high mineral content
Dimensions  
Height 478mm
Width 225mm
Depth 105mm
Weight filled with water 5.5kg
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