STIEBEL ELTRON DEM 3 Operation And Installation Manual
Electronically controlled mini instantaneous water heater
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BEDIENUNG UND INSTALLATION
OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
BEDIENING EN INSTALLATIE
Elektronisch geregelter Mini-Durchlauferhitzer | Electronically controlled mini
instantaneous water heater | Mini chauffe-eau instantané à régulation électronique |
Elektronisch geregelde mini-doorstromer
» DEM 3
» DEM 4
» DEM 6
» DEM 7
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Table of Contents
Troubleshooting
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Summary of Contents for STIEBEL ELTRON DEM 3
- Page 1 OPERATION AND INSTALLATION UTILISATION ET INSTALLATION BEDIENING EN INSTALLATIE Elektronisch geregelter Mini-Durchlauferhitzer | Electronically controlled mini instantaneous water heater | Mini chauffe-eau instantané à régulation électronique | Elektronisch geregelde mini-doorstromer » DEM 3 » DEM 4 » DEM 6 » DEM 7...
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Page 2: Table Of Contents
CONTENTS SPECIAL INFORMATION OPERATION General information ��������������������������������������� 33 Safety �������������������������������������������������������� 34 Appliance description ������������������������������������� 35 Settings ����������������������������������������������������� 36 Cleaning, care and maintenance ������������������������� 36 Troubleshooting �������������������������������������������� 36 INSTALLATION Safety �������������������������������������������������������� 37 Appliance description ������������������������������������� 37 Preparations ������������������������������������������������ 38 Installation �������������������������������������������������� 38 Commissioning ���������������������������������������������... -
Page 3: Special Information
SPECIaL INfORMaTION SPECIaL INfORMaTION - Connect the appliance permanently to fixed wiring, exception DEM 3. - In the case of damage, the power cable must - The appliance may be used by children aged only be replaced by a qualified contractor au- 3 and up and persons with reduced physical, thorised by the manufacturer using the original sensory or mental capabilities or a lack of ex-... -
Page 4: General Information
oPErATIoN general information oPErATIoN 1.1.2 Symbols, type of risk symbol Type of risk Injury General information Electrocution The chapter “Operation” is intended for appliance users and qual- ified contractors. Burns The chapter “Installation” is intended for qualified contractors. (burns, scalding) Note Read these instructions carefully before using the appli- 1.1.3 Keywords... -
Page 5: Safety
oPErATIoN safety Other symbols in this documentation Safety Intended use Note Notes are bordered by horizontal lines above and below This appliance is intended for domestic use. It can be used safely the text. General information is identified by the symbol by untrained persons. -
Page 6: Appliance Description
oPErATIoN Appliance description Appliance description WARNING Injury The appliance may be used by children aged 3 and up and The electronically controlled mini instantaneous water heater persons with reduced physical, sensory or mental capa- maintains a constant outlet temperature up to its output limit, bilities or a lack of experience and know-how, provided irrespective of the inlet temperature. -
Page 7: Settings
oPErATIoN settings Settings f Regularly descale or replace the special aerator (see chapter “Appliance description / Accessories”). The appliance heating system switches on automatically as soon as you open the DHW valve at the tap or activate the sensor of a Troubleshooting sensor tap. -
Page 8: Installation
INsTALLATIoN safety INsTALLATIoN Instructions, standards and regulations Note Observe all applicable national and regional regulations and instructions. Safety Only a qualified contractor should carry out installation, commis- The specific electrical resistance of the water must not fall below sioning, maintenance and repair of the appliance. that stated on the type plate. -
Page 9: Installation
INsTALLATIoN Preparations Accessories Preparations f Flush the water line thoroughly. Special aerator Water installation Note A safety valve is not required. Fitting the special aerator supplied provides an optimum water jet. Taps f Use suitable taps (see chapter “Appliance description / Non-pressurised taps Accessories”). - Page 10 INsTALLATIoN Installation f Always fit the appliance back panel. Pressure-tested, with pressure-tested tap 10.2 Installation options 10.2.1 Undersink installation Non-pressurised, with non-pressurised tap www.stiebel-eltron.com DEM |...
- Page 11 INsTALLATIoN Installation Appliance installation f Using pliers, break out the knock-out for the power cable in the appliance cover. Correct the contours with a file if necessary. Note f Mount the appliance on the wall. The wall must have a sufficient load-bearing capacity. ...
- Page 12 INsTALLATIoN Installation f Route the power cable through the cable entry in the back 10.2.2 Oversink installation, non-pressurised, with non- panel. pressurised tap f Hook in the appliance cover with the heater at the bottom. f Click the heater into place using the snap fastener. f Secure the appliance cover with the cover fixing screws.
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Page 13: Connecting The Power Supply
INsTALLATIoN Installation Appliance installation Material losses f Fit the appliance to the tap with the water connections. When making the connection to a standard safety socket (in the case of a power cable with plug), ensure that the 10.3 Connecting the power supply socket is freely accessible after the appliance has been installed. -
Page 14: Commissioning
INsTALLATIoN Commissioning 11. Commissioning 11.3 Recommissioning 11.1 Initial start-up Material losses Following an interruption of the water supply, recommis- sion the appliance by carrying out the following steps, in order to prevent irreparable damage to the bare wire heating system. f Isolate the appliance from the power supply. - Page 15 INsTALLATIoN Commissioning Setting the maximum temperature Factory setting: 38 °C 30°C 38°C 50°C f Using a screwdriver, set the potentiometer to the maximum required temperature. f Fit the appliance cover. f Remove the appliance cover. | DEM www.stiebel-eltron.com...
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Page 16: Shutting Down
INsTALLATIoN shutting down Limiting the flow rate 12. Shutting down Factory setting: Maximum flow rate f Isolate the appliance from the power supply by means of the fuse/MCB in your fuse box or by pulling the power cable plug from the socket. f Drain the appliance (see chapter “Maintenance”). - Page 17 1 Illuminates red in the case of a fault 2 Illuminates yellow during heating operation 1 1-pole safety pressure limiter DEM 4 / DEM 6 3 Flashes green if the PCB is receiving power 2 2-pole safety pressure limiter DEM 3 / DEM 7 | DEM www.stiebel-eltron.com...
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Page 18: Maintenance
INsTALLATIoN Maintenance 14. Maintenance 14.2 Cleaning the strainer You can clean the fitted strainer after removing the cold water DANGER Electrocution supply pipe. Before any work on the appliance, disconnect all poles from the power supply. 14.1 Draining the appliance DANGER Scalding Hot water may escape during the draining process. -
Page 19: Specification
INsTALLATIoN Specification 14.4 Appliance storage 15. Specification f Store the dismantled appliance in a room free from the risk 15.1 Dimensions and connections of frost, as water residues remaining inside the appliance can freeze and cause damage. 14.5 Replacing the power cable for the DEM 6 f If replacing the cable for the DEM 6, use a power cable with 4 mm²... -
Page 20: Wiring Diagram
INsTALLATIoN Specification 15.2 Wiring diagram 15.2.2 DEM 4 and DEM 6 1/N/PE ~ 200-240 V 15.2.1 DEM 3 1/N/PE ~ 200-240 V ϑ ϑ V > V > p > p > 1 Safety pressure limiter 2 Pressure differential switch... -
Page 21: Increasing The Temperature
2 4.4 kW - 230 V 3 5.7 kW - 230 V 2 Pressure differential switch 4 6.5 kW - 400 V 3 PCB with outlet temperature sensor Example DEM 3 with 3.5 kW Flow rate l/min Increasing the temperature Cold water supply temperature °C Maximum possible outlet temperature °C... -
Page 22: Application Areas
INsTALLATIoN Specification 15.4 Application areas For the specific electrical resistance and specific electrical conductivity, see “Data table”. standard specifica- tion at 15 °C 20 °C 25 °C Spec. re- Spec. conduc- Spec. re- Spec. conduc- Spec. re- Spec. conduc- tivity σ ≤ tivity σ ≤ tivity σ... -
Page 23: Energy Consumption Data
InstallatIon Specification 15.5 Energy consumption data Product datasheet: Conventional water heaters to regulation (EU) no. 812/2013 and 814/2013 / (S.I. 2019 No. 539 / Schedule 2) DEM 3 DEM 4 DEM 6 DEM 7 231001 231002 231215 232769 Manufacturer STIEBEL ELTRON... - Page 24 INsTALLATIoN Specification DEM 3 DEM 4 DEM 6 DEM 7 Specific conductivity σ ≤ (at ϑcold ≤50 °C) μS/cm Max. mains impedance at 50Hz Ω 0.091 0.083 0.079 0.076 0.072 0.065 0.063 0.06 0.056 0.051 0.049 0.047 Max. mains impedance at 380 V / 50Hz Ω...
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Page 25: Environment And Recycling
INsTALLATIoN | GUaRaNTEE | ENVIRONMENT aND RECYCLING Guarantee The guarantee conditions of our German companies do not DEM 3 DEM 4 DEM 6 DEM 7 apply to appliances acquired outside of Germany. In countries Colour white white white white IP-Rating...
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