STIEBEL ELTRON DNM 3 Bedienungsanleitung

Hydraulisch gesteuerter druckloser Mini-Durchlauferhitzer | Hydraulically controlled,

non-pressurised mini instantaneous water heater | Mini chauffe-eau instantané et à

écoulement libre à gestion hydraulique | Hydraulisch gestuurde drukloze mini-doorstromer

| Hydraulicznie sterowany bezciśnieniowy mini przepływowy ogrzewacz | Malý hydraulicky

řízený beztlakový průtokový ohřívač| Hydraulicky riadený mini prietokový ohrievač | Mini

încălzitor instant controlat electronic | Малогабаритный безнапорный проточный нагреватель с

гидравлическим управлением

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BEDIENUNG UND INSTALLATION

OPERATION AND INSTALLATION

UTILISATION ET INSTALLATION

BEDIENING EN INSTALLATIE

OBSŁUGA I INSTALACJA

OBSLUHA A INSTALACE

OBSLUHA A INŠTALÁCIA

OPERAREA ŞI INSTALAREA

ЭКСПЛУАТАЦИЯ И МОНТАЖ

24 | DNM www.stiebel-eltron.com



SPECIAL INFORMATION

OPERATION

1. General information �� 25

2. Safety�� 27

3. Appliance description �� 28

4. Settings �� 28

5. Cleaning, care and maintenance �� 28

6. Troubleshooting �� 29

INSTALLATION

7. Safety�� 29

8. Appliance description �� 30

9. Preparations�� 30

10. Installation�� 31

11. Commissioning �� 34

12. Appliance shutdown�� 35

13. Troubleshooting �� 35

14. Maintenance �� 35

15. Speciﬁcation �� 36

GUARANTEE

ENVIRONMENT AND RECYCLING



- The appliance may be used by children aged 3

and older and persons with reduced physical,

sensory or mental capabilities or a lack of ex-

perience and know-how, provided that they are

supervised or they have been instructed on how

to use the appliance safely and have understood

the resulting risks. Children must never play with

the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they

are supervised.

- During operation, the tap can reach temperatures

in excess of 50 °C. There is a risk of scalding at

outlet temperatures in excess of 43°C.

- Ensure the appliance can be separated from the

power supply by an isolator that disconnects all

poles with at least 3mm contact separation.

- The speciﬁed voltage must match the mains

voltage.

ENGLISH

www.stiebel-eltron.com DNM | 25

OPERATION

General information

- The power cable must only be replaced (for ex-

ample if damaged) by a qualiﬁed contractor au-

thorised by the manufacturer, using an original

spare part.

- Secure the appliance as described in chapter "In-

stallation/ Installation".

- Observe the maximum permissible pressure (see

chapter "Speciﬁcation/ Data table").

- The speciﬁc water resistivity of the mains water

supply must not be undershot (see chapter “In-

stallation / Speciﬁcation / Data table”).

- Drain the appliance as described in chapter "In-

stallation/ Maintenance/ Draining the appliance".

OPERATION

1. General information

The chapter "Operation" is intended for appliance users and qual-

iﬁed contractors.

The chapter "Installation" is intended for qualiﬁed contractors.

Note

Read these instructions carefully before using the appli-

ance and retain them for future reference.

Pass on the instructions to a new user if required.

1.1 Safety instructions

1.1.1 Structure of safety instructions

KEYWORD Type of risk

Here, possible consequences are listed that may result

from failure to observe the safety instructions.

 Steps to prevent the risk are listed.

OPERATION

General information

26 | DNM www.stiebel-eltron.com

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

Electrocution

Burns

(burns, scalding)

1.1.3 Keywords

 Meaning

DANGER Failure to observe this information will result in serious

injury or death.

WARNING Failure to observe this information may result in serious

injury or death.

CAUTION Failure to observe this information may result in non-seri-

ous or minor injury.

1.2 Other symbols in this documentation

Note

Notes are bordered by horizontal lines above and below

the text. General information is identiﬁed by the adjacent

symbol.

 Read these texts carefully.

Symbol

Material losses

(appliance damage, consequential losses and environmen-

tal pollution)

Appliance disposal

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

1.3 Units of measurement

Note

Unless speciﬁed otherwise, all dimensions are given in

mm.

ENGLISH

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OPERATION

Safety

2. Safety

2.1 Intended use

The appliance is intended for domestic use. It can be used safely

by untrained persons. The appliance can also be used in a non-do-

mestic environment, e.g. in a small business, as long as it is used

in the same way.

This appliance is designed to heat DHW. The appliance is designed

for one hand washbasin.

Any other use beyond that described shall be deemed inappro-

priate. Observation of these instructions and of the instructions

for any accessories used is also part of the correct use of this

appliance.

2.2 General safety instructions

DANGER Scalding

During operation, the tap can reach temperatures in ex-

cess of 50 °C.

There is a risk of scalding at outlet temperatures in ex-

cess of 43 °C.

!WARNING Injury

The appliance may be used by children aged 3 and older

and persons with reduced physical, sensory or mental

capabilities or a lack of experience and know-how, pro-

vided that they are supervised or they have been in-

structed on how to use the appliance safely and have

understood the resulting risks. Children must never play

with the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they are

supervised.

DANGER Electrocution

Any damaged power cables must be replaced by a qual-

iﬁed electrician. This prevents potential hazards from

arising.

!Material losses

Protect the appliance and tap against frost.

OPERATION

Appliance description

28 | DNM www.stiebel-eltron.com

!Material losses

Ensure that the non-pressurised appliance is not exposed

to any pressure as this could cause irreparable damage:

 Only use the special aerator provided.

 Never use aerators or hoses with aerators.

 Never seal the tap outlets.

 Prevent scale build-up at the tap outlets (see chapter

"Cleaning, care and maintenance").

2.3 Test symbols

See type plate on the appliance.

3. Appliance description

The hydraulically controlled, non-pressurised mini instantaneous

water heater heats the water directly at the draw-off point. The

heating system starts automatically when the tap is opened. The

short pipe runs ensure that energy and water losses are minimal.

The DHW output depends on the cold water temperature, the heat-

ing output and the ﬂow rate.

The bare wire heating system is suitable for hard and soft water

areas. This heating system has a low susceptibility to scale build-

up. The heating system ensures quick and efﬁcient DHW provision

at the hand washbasin.

Fitting the special aerator supplied provides an optimum water jet.

4. Settings

The appliance heating system switches on automatically as soon

as you open the DHW valve at the tap or activate the sensor of a

sensor tap. The water is heated. The water temperature can be

adjusted at the tap:

For the start volume, see chapter "Speciﬁcation/ Data table/ On".

Increasing the temperature

 Reduce the ﬂow rate at the tap.

Reducing the temperature

 Open the tap further or add more cold water.

Following an interruption to the water supply

See chapter "Commissioning/ Recommissioning".

5. Cleaning, care and maintenance

 Never use abrasive or corrosive cleaning agents. A damp

cloth is sufﬁcient for cleaning the appliance.

!Material losses

Scale build-up at the tap outlets can put the appliance

under pressure and may cause irreparable damage.

ENGLISH

www.stiebel-eltron.com DNM | 29

INSTALLATION

Troubleshooting

 Check the taps regularly. Limescale deposits at the tap out-

lets can be removed using commercially available descaling

agents.

 Have the electrical safety of the appliance regularly checked

by a qualiﬁed contractor.

 Regularly descale or replace the special aerator (see chapter

"Appliance description/Accessories").

6. Troubleshooting

Problem  Remedy

The appliance will not

start despite the DHW

valve being fully open.

No power at the appli-

ance. Check the fuse/MCB in

your fuse box/distribu-

tion board.

The aerator in the tap is

scaled up or dirty. Clean and/or descale the

aerator or replace the

special aerator.

The water supply has

been interrupted. Vent the appliance and

the cold water inlet line

(see chapter "Settings").

If you cannot remedy the fault, notify your contractor. To facilitate

and speed up your request, provide the number from the type

plate (000000-0000-000000).

DNM . . No.: 000000-0000-000000

INSTALLATION

7. Safety

Only a qualiﬁed contractor should carry out installation, commis-

sioning, maintenance and repair of the appliance.

7.1 General safety instructions

We guarantee trouble-free function and operational reliability only

if original accessories and spare parts intended for the appliance

are used.

!Material losses

Observe the max. permissible inlet temperature. Higher

temperatures may damage the appliance. You can limit

the inlet temperature by means of a central thermostatic

valve (see chapter "Appliance description/ Accessories").

!Material losses

Only operate the appliance with non-pressurised taps.

INSTALLATION

Appliance description

30 | DNM www.stiebel-eltron.com

7.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations

and instructions.

The speciﬁc electrical resistance of the water must not fall below

that stated on the type plate. In a linked water network, factor in

the lowest electrical resistance of the water (see chapter "Speci-

ﬁcation/ Data table"). Your water supply utility will advise you of

the speciﬁc electrical water resistance or conductivity.

8. Appliance description

8.1 Standard delivery

The following are delivered with the appliance:

- Sieve inside the cold water inlet

- Special aerator "SR"

- Company logo for oversink installation

8.2 Accessories

Special aerator "SR"*

- SR 3: Part number 289591

for DHM 3 and DHM 4

- SR 5: Part number 270582

for DHM 6 and DHM 7

* For use in thread M22/M24.

Non-pressurised taps

- WEN Sensor tap for washbasins

- MAW Wall mounted tap for oversink installation

- MAZ Twin-lever basin tap

- MAE Mono lever basin tap

ZTA 3/4 - central thermostatic valve

Thermostatic valve for central premixing, for example for operat-

ing an instantaneous water heater with a solar thermal system.

9. Preparations

 Flush the water line thoroughly.

Water installation

No safety valve is required.

Taps/valves

 Use suitable taps (see chapter "Appliance description/

Accessories").

ENGLISH

www.stiebel-eltron.com DNM | 31

INSTALLATION

Installation

Note

Fitting the special aerator supplied provides an optimum

water jet.

10. Installation

10.1 Installation location

Install the appliance in a room free from the risk of frost and near

the draw-off tap.

Ensure that the lateral ﬁxing screws for the cover are always ac-

cessible.

The appliance is suitable for undersink installation (water con-

nections at the top) and oversink installation (water connections

at the bottom).

DANGER Electrocution

Protection rating IP 25 is only ensured if the appliance

back panel is ﬁtted.

 Always ﬁt the appliance back panel.

10.2 Installation options

10.2.1 Undersink installation, non-pressurised, with non-

pressurised tap

26_02_05_0080

Appliance installation

 Mount the appliance on the wall.

Note

The wall must have sufﬁcient load bearing capacity.

INSTALLATION

Installation

32 | DNM www.stiebel-eltron.com







26_02_05_0083

 Undo the cover ﬁxing screws by two turns.

 Undo the snap fastener using a screwdriver.

 Remove the appliance cover with the heater towards the

front.





26_02_05_0084

 Using pliers, break out the knock-out for the power cable

in the appliance cover. Correct the contours with a ﬁle if

necessary.

 Use the appliance back panel as a drilling template.

 Secure the appliance back panel to the wall with suitable

rawl plugs and screws.

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