Stiebel Eltron DEL 13 Plus AU, DEL 18 Plus AU, DEL 27 Plus AU User Manual

OPERATION AND INSTALLAT ION
Electronically controlled comfort instantaneous water heater
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T
Tmax
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 Selecting the set temperature ��������������������������������� 5
4.4 Temperature limit via internal anti-scalding protection (qualified contractor)������������������������������ 5
4.5 Temperature limit Tmax (user) �������������������������������� 6
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 ���������������������������7
6. Troubleshooting ����������������������������������������������7
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 ������������������������������������������������ 9
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 ���������������������������� 15
13.9 Horizontal installation of the appliance �������������������� 15
14. Service information ���������������������������������������� 15
15. Troubleshooting �������������������������������������������� 16
15.1 Fault code display ���������������������������������������������� 16
16. Maintenance ������������������������������������������������ 17
17. Specification ������������������������������������������������ 17
17.1 Dimensions and connections ��������������������������������� 17
17.2 Wiring diagram ������������������������������������������������� 18
17.3 DHW output ������������������������������������������������������ 18
17.4 Application areas/ Conversion table ����������������������� 18
17.5 Pressure drop ��������������������������������������������������� 18
17.6 Fault conditions ������������������������������������������������� 18
17.7 Data table �������������������������������������������������������� 19
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.
- If using preheated water, the tap can reach a temperature of up to 50°C during operation. 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.

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.
f Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
!
Injury
Electrocution
Burns (burns, scalding)
- The appliance must be connected to earth.
- The appliance must be permanently connect­ed to fixed wiring.
- Secure the appliance as described in chapter "Installation/ Installation".
- Observe the maximum permissible pressure (see chapter "Installation/ Specification/ Data 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".
1.1.3 Keywords
KEYWORD Meaning
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.
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OPERATION

Safety

1.2 Other symbols in this documentation

Note
General information is identified by the adjacent symbol.
f Read these texts carefully.
Symbol Meaning
!
f 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
CAUTION Burns If operating with preheated water, e.g. if using a solar thermal system, observe the following information:
- The DHW temperature may exceed the set tempera-
ture or a set temperature limit.
- The dynamic anti-scalding protection between the
appliance and a wireless remote control may not be effective.
f In such cases, limit the temperature with an up-
stream central thermostatic valve.
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.
WARNING
!
For continued safety of this appliance it must be in­stalled, operated and maintained in accordance with the manufacturer's instructions.

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 If using preheated water, the tap can reach a temper­ature of up to 50°C during operation. There is a risk of scalding at outlet temperatures in excess of 43 °C.
CAUTION Burns If children or persons with limited physical, sensory or mental capabilities use the appliance, set a temperature limit. Once set, check the temperature limit is working correctly. If a permanent and unchangeable temperature limit is required, have the internal anti-scalding protection set by a qualified contractor.
WARNING
!
This appliance must only be installed in accordance with the acceptable plumbing configurations specified in these instructions. Failure to do so may result in condi­tions where delivery temperature control is inadequate.
Material losses
!
The user should protect the appliance and its tap against frost.

2.3 Test symbols

See type plate on the appliance

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 set tempera­ture is adjustable. Upwards of a certain flow rate, the control unit selects the required heating output, subject to the temperature selected and the 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 temperature, the word "hot" and the inlet temperature are displayed alternately, and the "hot" LED flashes. The water is not heated further.
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OPERATION

Settings and displays

You can store different set temperatures and call them up quickly. With the ECO function, the flow rate is limited to 3 preset levels. The appliance has setting options for a temperature limit (Tmax function, user) and internal anti-scalding protection (qualified contractor). The backlight switches on automatically as soon as water starts to flow through the appliance or you make a change on the user interface. The backlight switches off automatically after water stops flowing or if no action is performed.
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

4.2 Display symbols

4
3
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
T
Tmax
5
6

4.3 Selecting the set temperature

T
2
Tmax
D0000073009

4.1 User interface

T
3
2
1
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
5
1
1 Set temperature settings: OFF, 20 - 50°C 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
D0000073010
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).
f Use the ECO button to reduce the water volume until
the required temperature is achieved.
4.4 Temperature limit via internal anti-scalding protection (qualified contractor)
If required, the qualified contractor can set a permanent temper­ature limit, for example in nurseries, hospitals,etc.
If the anti-scalding protection function (43°C) is enabled, "Tmax" flashes continually once the set temperature has been reached.
D0000073010
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OPERATION
Settings and displays

4.5 Temperature limit Tmax (user)

The temperature limit allows you as a user to restrict the adjusta­ble set temperature at the appliance to a maximum value.
Your qualified contractor can set an additional temperature limit for anti-scalding protection. This temperature then dictates the upper limit of the setting range for the temperature limit function.
4.5.1 Enabling the temperature limit
f Press and hold buttons "1" and "2" for longer than 5seconds,
until "Tmax" and the temperature display flash.
f Select a temperature limit.
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.
Check that the upper temperature limit has been correctly applied.
4.5.2 Disabling the temperature limit
f Disable the high limit safety cut-out by pressing and holding
buttons "1" and "2" for longer than 5seconds.

4.6 Allocating temperature memory buttons

Memory buttons "1" and "2" can each be assigned a required temperature.
f Select the required temperature.f To store the required temperature, press and hold button "1"
or "2" for longer than 3seconds. The selected 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.

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 OFF No symbol No flow rate limit
f Briefly press the ECO button. Rolling selection, "Level1 - 3/
OFF".

4.9 Inlet temperature information

If the appliance is operated with preheated water and the inlet temperature exceeds the selected temperature, the word "hot" and the inlet temperature are displayed alternately, and the "hot" LED flashes.
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:
f Set the temperature at the instantaneous water heater to the
maximum temperature. Then set the required set tempera­ture on the thermostatic valve.
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.
Limiting it in this way prevents water from flowing out of the appliance at temperatures which could cause injury.
f To call up the menu, press and hold the ECO button for
longer than 5seconds.
f To select, turn the temperature selector.f Press the ECO button once more.f 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.
6 | DEL Plus AU www.stiebel-eltron.com
Recommended setting for operation with a thermostatic valve and water preheated by solar energy
f 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.
f Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
f Open the tap for one minute until the appliance and
its upstream cold water inlet line are free of air.
f Switch the power back ON.
OPERATION | INSTALLATION
Nr. 000000-0000-00000

Cleaning, care and maintenance

5. Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
f Check the taps regularly. Limescale deposits at the tap out-
lets can be removed using commercially available descaling agents.

6. Troubleshooting

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.

INSTALLATION

7. Safety

Only a qualified contractor should carry out installation, commis­sioning, 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 maximum inlet temperature. Higher tem­peratures may damage the appliance. You can limit the maximum inlet temperature by installing a central ther­mostatic valve.
CAUTION Burns If operating with preheated water, e.g. if using a solar thermal system, observe the following information:
- The DHW temperature may exceed the set tempera-
ture or a set temperature limit.
- The dynamic anti-scalding protection between the
appliance and a wireless remote control may not be effective.
f In such cases, limit the temperature with an up-
stream central thermostatic valve.
Note
Programming unit displays and selected settings are re­tained following a power failure.
If you cannot remedy the fault, contact your qualified contractor. To facilitate and speed up your request, provide the number from the type plate (000000-0000-000000).
Nr. 000000-0000-00000
WARNING Electrocution This appliance contains capacitors which are discharged when disconnected from the power supply. The capacitor discharge voltage may briefly exceed60VDC.

7.2 Instructions, standards and regulations

Note
Observe all applicable national and regional regulations and instructions.
Note
The installation of this appliance shall conform to the Plumbing Code of Australia (PCA), and the New Zealand Building Code.
D0000053312
Note
This appliance delivers water not exceeding 50°C in ac­cordance with AS3498.
- The IP24/ IP25 protection rating can only be ensured with a correctly fitted cable grommet.
- The specific electrical resistivity of the water must not fall below that stated on the type plate. In a linked water net­work, factor in the lowest electrical resistivity of the water. Your water supply utility will advise you of the specific elec­trical water resistivity or conductivity.
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INSTALLATION
Inlet
Valve 1
(and any other fixtures)

Appliance description

Test for delivery temperature performance
The appliance is to be tested according to AS3498 as a 50°C­limited water heater. The option1 illustrated in figureA.1 of the AppendixA applies to the appliance.
T
Water
heater
P
i
T
i
F
1
Outlet for delivery to sanitary fixtures used primarily for personal hygiene purposes
Pipe 1
D
Valve 2
Figure A.1 - Option1 - Simple water heater
Key
—•— Measurement location Pipe 1 Pipework to sanitar y fixtures used primarily for personal
F1 Flow rate to sanitary fixtures used primarily for personal
P
i
T
i
TD
Valves 1 and 2 Valves to control water flow for the purposes of testing
hygiene purposes
hygiene purposes Inlet pressure Inlet temperature Delivery temperature (represents water temperature at the
outlet from sanitary fixtures used primarily for personal hygiene purposes)

9. Preparation

9.1 Installation location

Material losses
!
Install the appliance in a room free from the risk of frost.
f Always install the appliance vertically and near the draw-off
point. For horizontal installation, see chapter "Alternative in­stallation methods/ Horizontal installation of the appliance".
The appliance is suitable for undersink and oversink installation.
D0000100267
Undersink installation
1 2
1 Cold water inlet 2 DHW outlet
Oversink installation
D0000056242
8. Appliance description

8.1 Standard delivery

The following are delivered with the appliance:
- Wall mounting bracket
- Installation template
- 2 plugs
- 2 extensions
- 2 caps
- 2 tees
- 8 flat gaskets
- Strainer
- Plastic profile washer
- Plastic connection pieces/installation aid
- Cover and back panel guides
- Jumper for internal anti-scalding protection

8.2 Accessories

Wireless remote control
- FFB4SetAP
1 Cold water inlet 2 DHW outlet
Note
f Mount the appliance on the wall. The wall must have
sufficient load bearing capacity.

9.2 Minimum clearances

12
D0000057030
≥90
≥50≥50
≥90
f Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
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D0000060809
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