Stiebel Eltron DEL13PLUS User Manual

OPERATION AND INSTALLAT ION

Electronically controlled comfort instantaneous water heater

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Tmax

CONTENTS

SPECIAL INFORMATION

OPERATION

1. General information ��3

1.1 Safety instructions �� 3

1.2 Other symbols in this documentation �� 4

1.3 Units of measurement �� 4

2. Safety �� 4

2.1 Intended use �� 4

2.2 General safety instructions �� 4

2.3 Test symbols �� 4

3. Appliance description ��4

4. Settings and displays ��5

4.1 User interface �� 5

4.2 Display symbols �� 5

4.3 Setting the temperature �� 5

4.4 Internal anti-scalding protection (qualiﬁed contractors) 5

4.5 Setting the Tmax temperature limit �� 5

4.6 Allocating temperature memory buttons �� 6

4.7 Settings menu �� 6

4.8 Selecting ECO level �� 6

4.9 Inlet temperature information �� 6

4.10 Recommended settings �� 6

5. Cleaning, care and maintenance ��6

6. Troubleshooting ��6

INSTALLATION

7. Safety �� 7

7.1 General safety instructions �� 7

7.2 Instructions, standards and regulations �� 7

8. Appliance description ��8

8.1 Standard delivery �� 8

8.2 Accessories �� 8

9. Preparation ��8

9.1 Installation location �� 8

9.2 Minimum clearances �� 8

9.3 Water installation �� 8

10. Installation ��9

10.1 Standard installation �� 9

11. Commissioning �� 11

11.1 Preparation �� 11

11.2 Initial start-up �� 11

11.3 Recommissioning �� 12

12. Appliance shutdown �� 12

13. Alternative installation methods �� 12

13.1 Electrical connection from above on unﬁnished walls �� 12

13.2 Electrical connection on unﬁnished walls with short power cable �� 13

13.3 Electrical connection on ﬁnished walls �� 13

13.4 Water installation on unﬁnished walls �� 13

13.5 Wall mounting bracket when replacing an appliance �� 14

13.6 Installation with offset tiles �� 14

13.7 Pivoting appliance cover �� 14

13.8 Operation with preheated water �� 14

14. Service information �� 14

15. Troubleshooting �� 15

16. Maintenance �� 16

17. Speciﬁcation �� 16

17.1 Dimensions and connections �� 16

17.2 Wiring diagram �� 17

17.3 DHW output �� 17

17.4 Application areas/ Conversion table �� 17

17.5 Pressure drop �� 17

17.6 Fault conditions �� 17

17.7 Data table �� 18

ENVIRONMENT AND RECYCLING

WARRANTY

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SPECIAL INFORMATION | OPERATION

General information

SPECIAL INFORMATION

- 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, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the potential risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

- The tap can reach temperatures of up to 50°C. There is a risk of scalding at outlet temperatures in excess of 43 °C.

- The appliance is suitable for supplying a shower (shower operation). When using preheated water, it must be ensured that the inlet temperature does not exceed 50°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 power supply.

- The appliance must be connected to earth.

OPERATION

1. General information

The chapters "Special information" and "Operation" are intended for both users and qualiﬁed contractors.

The chapter "Installation" is intended for qualiﬁed contractors.

Note

Read these instructions carefully before using the appliance 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.

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

Electrocution

Burns (burns, scalding)

ENGLISH

- The appliance must be permanently connect-

1.1.3 Keywords

ed to ﬁxed wiring.

KEYWORD Meaning

- Secure the appliance as described in chapter "Installation/ Installation".

- Observe the maximum permissible pressure (see chapter "Installation/ Speciﬁcation/ Data

DANGER Failure to obser ve this information will result in serious

injury or death.

WARNING Failure to obser ve this information may result in serious

injury or death.

CAUTION Failure to obser ve this information may result in non-seri-

ous or minor injury.

table").

- The speciﬁc water resistivity of the mains water supply must not be undershot (see chapter "Installation/ Speciﬁcation/ Data table").

- Drain the appliance as described in chapter "Installation/ Maintenance/ Draining the appliance".

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OPERATION

Safety

1.2 Other symbols in this documentation

Note

General information is identiﬁed by the adjacent symbol.

 Read these texts carefully.

Symbol Meaning

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

tion you need to take is described step by step.

Material losses (appliance damage, consequential losses and environmental pollution)

Appliance disposal

1.3 Units of measurement

Note

All measurements are given in mm unless stated otherwise.

2. Safety

2.1 Intended use

This appliance is suitable for heating domestic hot water or for reheating preheated water. The appliance can supply one or more draw-off points.

Water will not be reheated if the maximum inlet temperature for reheating is exceeded.

The appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in non-domestic environments, e.g.in small businesses, as long as it is used in the same way.

Any other use beyond that described shall be deemed inappropriate. 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

CAUTION Burns The tap can reach temperatures of up to 50°C. There is a risk of scalding at outlet temperatures in excess of 43 °C.

CAUTION Burns If operating with preheated water, e.g.from a solar thermal system, the DHW temperature may vary from the selected set temperature.

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, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the potential risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

Where children or persons with limited physical, sensory or mental abilities are allowed to use this appliance, we recommend a permanent temperature limit. The following limitation options are available:

- User adjustable: Temperature limit (e.g.for childprooﬁng)

- Qualiﬁed contractor adjustable: Internal anti-scalding protection.

WARNING

For continued safety of this appliance it must be installed, operated and maintained in accordance with the manufacturer’s instructions.

Material losses

The user should protect the appliance and its tap against frost.

2.3 Test symbols

See type plate on the appliance

Information for Australia/New Zealand:

Installation shall comply with standard AS/NZS 3500.4

3. Appliance description

The appliance switches on automatically as soon as you open the hot water valve on the tap. When you close the tap, the appliance switches off again automatically.

The appliance heats water as it ﬂows through it. The DHW outlet temperature can be variably adjusted. From a certain ﬂow rate, the control unit regulates the correct heating output, subject to the temperature selected and the current cold water temperature.

The electronically controlled instantaneous water heater with automatic output matching maintains a consistent outlet temperature. It is irrespective of the inlet temperature, up to the maximum output of the appliance.

If the appliance is operated with preheated water and the inlet temperature exceeds the selected set temperature, the word "hot" and the inlet temperature are displayed alternately, and the "hot" LED ﬂashes. The water is not heated further.

You can save and quickly call up different temperatures. With the ECO function, the ﬂow rate is limited to 3 preset levels. The appliance is equipped with functions to permanently limit the temperature (e.g.for childprooﬁng). The backlight switches on automatically as soon as water starts to ﬂow through the appli-

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OPERATION

Settings and displays

ance or you make a change on the user interface. The backlight switches off automatically 5seconds after water stops ﬂowing or if no operation has been performed for 30seconds.

You can set the temperature unit and operating lock individually.

Heating system

The bare wire heating system is enclosed within a pressure-tested plastic jacket. The heating system with its stainless steel heater spiral is suitable for hard and soft water areas and is largely insusceptible to scale build-up. The heating system ensures rapid and efﬁcient DHW provision.

Note

The appliance is equipped with an air detector that largely prevents damage to the heating system. If, during operation, air is drawn into the appliance, the appliance shuts down for one minute, thereby protecting the heating system.

4. Settings and displays

4.1 User interface

4.3 Setting the temperature

1 Set temperature selector (no end-stop): "OFF", 20 - 50°C (factory setting) 2 Call up/assign preferred temperatures

Setting steps

Temperature range Step Temperature range Step 20°C ... 35°C 1°C 68°F ... 122°F 1°F 35°C ... 43 °C 0.5°C 43°C ... 50°C 1°C

Tmax

ENGLISH

D0000073010

1 Temperature selector 2 "hot" scald warning LED, at temperatures higher than 43°C 3 Temperature memory buttons 1 and 2 4 Display 5 ECO button with ECO level selection/ Menu call-up

Tmax

4.2 Display symbols

2 1

1 ECO indicator [rolling, levels 1 - 3, OFF] 2 Output bar [10 - 100%] 3 Segment display [°C/°F] 4 In the event of an appliance fault, a spanner appears 5 Operating lock [ON/OFF] 6 Tmax, displayed when temperature limit is enabled

Tmax

Note

If the outlet temperature is not high enough when the draw-off valve is fully open and the temperature selector is set to maximum, then more water is ﬂowing through the appliance than can be heated by the heating system (appliance working at maximum output).

 Use the ECO button to reduce the water volume until

the required temperature is achieved.

4.4 Internal anti-scalding protection (qualiﬁed contractors)

D0000073010

The appliance has an anti-scalding protection function. The qualiﬁed contractor can set an anti-scalding protection level for you on request.

If the anti-scalding protection function (43°C) is enabled, "Tmax" ﬂashes continually once the set temperature has been reached.

4.5 Setting the Tmax temperature limit

Enabling the temperature limit

You can activate and adjust the temperature limit individually (e.g.for childprooﬁng).

 Press and hold buttons "1" and "2" for longer than 5seconds,

until "Tmax" and the temperature display ﬂash.

 Select a temperature limit.

D0000073009

10seconds after completing the setting, the menu item will disappear automatically.

If the high limit safety cut-out is enabled, "Tmax" is continuously displayed.

Disabling the temperature limit

 Disable the high limit safety cut-out by pressing and holding

buttons "1" and "2" for longer than 5seconds.

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OPERATION

Cleaning, care and maintenance

4.6 Allocating temperature memory buttons

Memory buttons "1" and "2" can each be assigned a required temperature.

 Select the required temperature.  To store the required temperature, press and hold button

"1" or "2" for longer than 3seconds. The temperature ﬂashes once to conﬁrm.

4.7 Settings menu

Menu Description

Temperature display Select °C or °F Operating lock Select ON or OFF. Symbol displayed Fault code display Displays E1...E3 if there is a fault on the appli-

ance. Call qualified contractor.

 To call up the menu, press and hold the ECO button for

longer than 5seconds.

 To select, turn the temperature selector.  Press the ECO button once more.  To quit the menu, press and hold the ECO button for longer

than 5seconds.

The menu switches off automatically if no operation has been performed for 30seconds.

Note

To call up the menu when the operating lock is enabled, press and hold the ECO button for longer than 10seconds.

4.8 Selecting ECO level

ECO level Display Flow rate limitation

Level 1 8l/min (factory setting) Level 2 7l/min Level 3 6l/min

No symbol No flow rate limit

Saving energy

The following recommended settings will result in the lowest energy consumption:

- 38°C for hand washbasins, showers, bath

- 50°C for kitchen sinks

Internal anti-scalding protection (qualiﬁed contractors)

If required, the qualiﬁed contractor can set a permanent temperature limit, for example in nurseries, hospitals,etc.

Recommended setting for operation with a thermostatic valve and water preheated by solar energy

 Set the temperature at the instantaneous water heater to the

maximum temperature.

Following an interruption to the water supply

Material losses

To ensure that the bare wire heating system is not damaged following an interruption to the water supply, the appliance must be restarted by taking the following steps.

 Disconnect the appliance from the power supply by

removing the fuses/tripping the MCBs.

 Open the tap for one minute until the appliance and

its upstream cold water inlet line are free of air.

 Switch the power back ON.

5. Cleaning, care and maintenance

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

cloth is sufﬁcient for cleaning the appliance.

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

lets can be removed using commercially available descaling agents.

6. Troubleshooting

 Brieﬂy press the ECO button. Rolling selection, "Level1 - 3/

OFF".

4.9 Inlet temperature information

4.10 Recommended settings

Your instantaneous water heater offers maximum precision and maximum convenience in DHW provision. Should you nonetheless be operating the appliance with a thermostatic valve, we recommend that you:

 Adjust the set temperature on the appliance to maximum

temperature.

 Then set the required set temperature on the thermostatic

valve.

Problem Cause Remedy

The appliance will not start despite the DHW valve being fully open.

The water supply has

When hot water is being drawn off, cold water flows for a short period.

The required temperature cannot be set.

The flow rate is too low. ECO function is enabled. Select a different ECO

No settings can be made on the programming unit.

There is no power.

The aerator in the tap or the shower head is scaled up or dirt y.

been interrupted. The air detector de-

tects air in the water. It switches off the heating output briefly.

The high limit safety cut-out and/or internal anti-scalding protection are enabled.

The operating lock is enabled.

Check the fuses/MCBs in your fuse box/distribution board.

Clean and/or descale the aerator or shower head.

Vent the appliance and the cold water inlet line.

The appliance restar ts automatically after 1minute.

Deactivate the temperature limit. The internal anti-scalding protection can only be adjusted by the qualified contractor.

level or disable the ECO function.

Press and hold the ECO button for more than 10seconds to disable the operating lock.

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