STIEBEL ELTRON DCE-X 6/8 Premium Instruction Manual

OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
ЭКСПЛУАТАЦИЯ И УСТАНОВКА

Fully electronically controlled compact instantaneous water heater
Chauffe-eau instantané compact à régulation entièrement électronique
Малогабаритный проточный нагреватель с полным электронным управлением

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CONTENTS
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������4
1.1 Safety instructions����������������������������������������������� 4
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 ������������������������������������������������������ 5
3. Appliance description ���������������������������������������5
4. Settings and displays ����������������������������������������5
4.1 User interface ���������������������������������������������������� 5
4.2 Display symbols�������������������������������������������������� 5
4.3 Setting the temperature���������������������������������������� 6
4.4 Internal anti-scalding protection (qualified contractors) 6
4.5 Setting the Tmax temperature limit (childproofing) ������ 6
4.6 Assigning values to the temperature memory buttons �� 6
4.7 Inlet temperature information �������������������������������� 6
4.8 Info menu ��������������������������������������������������������� 6
4.9 Settings in the parameter menu������������������������������ 7
4.10 Recommended settings ���������������������������������������� 9
5. Cleaning, care and maintenance ���������������������������9
6. Troubleshooting ����������������������������������������������9
INSTALLATION
7. Safety�������������������������������������������������������� 10
7.1 General safety instructions ����������������������������������� 10
7.2 Instructions, standards and regulations ������������������� 10
8. Appliance description ������������������������������������� 10
8.1 Standard delivery����������������������������������������������� 10
8.2 Accessories������������������������������������������������������� 10
9. Preparation ������������������������������������������������� 10
9.1 Installation site�������������������������������������������������� 10
9.2 Minimum clearances������������������������������������������� 11
9.3 Water installation����������������������������������������������� 11
10. Installation�������������������������������������������������� 11
10.1 Standard installation on finished walls �������������������� 11
11. Commissioning ��������������������������������������������� 13
11.1 Internal anti-scalding protection via jumper slot �������� 13
11.2 Changing the connected load via the jumper slot�������� 13
11.3 Initial start-up��������������������������������������������������� 13
11.4 Recommissioning����������������������������������������������� 14
12. Appliance shutdown ��������������������������������������� 14
13. Alternative installation methods ������������������������� 14
13.1 Electrical connection from above on unfinished walls�� 14
13.2 Electrical connection from below on unfinished walls�� 14
13.3 Electrical connection on unfinished walls with short
power cable������������������������������������������������������ 15
13.4 Electrical connection from the side on finished walls��� 15
13.5 Water installation on unfinished walls ��������������������� 15
13.6 Operation with preheated water ���������������������������� 16
14. Service information���������������������������������������� 16
15. Troubleshooting �������������������������������������������� 17
15.1 Fault code display ���������������������������������������������� 17
16. Maintenance ������������������������������������������������ 18
17. Specification ������������������������������������������������ 18
17.1 Dimensions and connections��������������������������������� 18
17.2 Wiring diagram ������������������������������������������������� 18
17.3 DHW output������������������������������������������������������ 19
17.4 Application areas/ conversion table ����������������������� 19
17.5 Pressure drop ��������������������������������������������������� 19
17.6 Fault conditions ������������������������������������������������� 19
17.7 Energy consumption data������������������������������������� 19
17.8 Data table �������������������������������������������������������� 20
GUARANTEE
ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION
ENGLISH
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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 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 potential risks. Children must
never play with the appliance. Cleaning and
user maintenance must not be carried out by
children without supervision.
- The tap can reach temperatures of up to
70°C. There is a risk of scalding at outlet tem-
peratures in excess of 43°C.
- The appliance is suitable for supplying a
shower (shower operation). If the appliance
is also or exclusively used for shower opera-
tion, the qualified contractor must adjust the
temperature setting range to 55°C or less
using the internal anti-scalding protection on
the appliance. When using preheated water,
ensure that the inlet temperature does not ex-
ceed 55°C.
- Ensure the appliance can be separated from
the power supply by an isolator that discon-
nects all poles with at least 3mm contact
separation.
- The specified voltage must match the power
supply.
- The appliance must be connected to the earth
conductor.
- The appliance must be permanently connect-
ed 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".

OPERATION
General information
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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 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.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD 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
General information is identified by the adjacent symbol.
 Read these texts carefully.
Symbol Meaning
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
All measurements are given in millimetres unless oth-
erwise stated.
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-do-
mestic 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 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
CAUTION Burns
During operation, the tap can reach temperatures in ex-
cess of 70°C.
There is a risk of scalding at outlet temperatures in ex-
cess of 43°C.
CAUTION Burns
If operating the appliance with preheated water,
e.g.from a solar thermal system, the DHW temperature
may differ 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 ca-
pabilities or a lack of experience and know-how, provid-
ed 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. Cleaning and user maintenance must not be
carried out by children without supervision.
!
!

OPERATION
Appliance description
ENGLISH
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Where children or persons with limited physical, sensory or men-
tal abilities are allowed to use this appliance, we recommend a
permanent temperature limit. The following options are available
for limiting the temperature:
- Set by user: Temperature limit (childproofing)
- Set by qualified contractor: "Internal anti-scalding
protection".
!
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 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 compact instantaneous water heater with full electronic con-
trol and automatic output matching maintains a consistent outlet
temperature. The fully electronic control unit with motorised valve
ensures the water is accurately heated to the selected tempera-
ture. This occurs regardless of the inlet temperature.
If the appliance is operated with preheated water and the inlet
temperature exceeds the selected set temperature, the inlet tem-
perature is indicated on the second display line and flashes. The
water is not heated further.
The compact instantaneous water heater with full electronic con-
trol allows you to save different set temperatures and call them
up quickly. In the ECO function, the integral motorised valve limits
the flow rate to 3preset levels. The appliance is equipped with
functions for permanent temperature limiting (childproofing).
The backlight automatically switches on as soon as water flows
through the appliance or a change is made at the user interface.
If no changes are made for 30seconds or water has stopped being
drawn off for 5seconds, the backlight automatically switches off
again.
DHW temperature
The DHW outlet temperature can be variably adjusted. The select-
ed temperature is shown on the display.
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 in-
susceptible to scale build-up. The heating system ensures rapid
and efficient DHW provision.
Note
The appliance is equipped with an air detector that large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, the appliance
shuts down heating operation for one minute to protect
the heating system.
4. Settings and displays
4.1 User interface
D0000073619
2
3
1
8
5
6
7
4
1 Temperature selector
2 Operating LED (flashes when output limit is reached)
3 Temperature memory keys
4 Backlit display
5 Main display | info display | parameter display
6 Segment display [10 - 100%]
7 Second display line
8 "i" button to call up information and select menus
4.2 Display symbols
The symbols are shown on the display when activated.
7
8
1 2 6543
D0000073618
1 Wellness showers
2 Automatic water volume control
3 ECO display
4 Tmax, displayed when temperature limit is enabled
5 Consumption indicator
6 Time
7 Operating lock [ON/ OFF]
8 Spanner symbol, appears in the event of a fault

OPERATION
Settings and displays
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4.3 Setting the temperature
D0000073619
2
1
1 Set temperature selector (no end-stop): OFF, 20 - 60°C
2 To call up/assign preferred temperatures
Settings
Setting Step Setting Step
20°C ... 60°C 0.5°C 68°F ... 140°F 1°F
4.4 Internal anti-scalding protection (qualified
contractors)
If required, the qualified contractor can set a permanent temper-
ature limit, for example in nurseries, hospitals,etc.
When supplying a shower, the appliance temperature setting
range must be adjusted by the qualified contractor to 55°C or less.
If the anti-scalding protection function is enabled and the tem-
perature limit is reached, "Tmax" flashes.
4.5 Setting the Tmax temperature limit
(childproofing)
You can adjust the temperature limit individually. If the tempera-
ture limit is enabled, "Tmax" is shown on the display.
4.5.1 Enabling the temperature limit
See chapter "Settings in the parameter menu".
4.5.2 Disabling the temperature limit
 Proceed as per menu item "Enabling the temperature limit".
 Turn the temperature selector to "OFF".
4.6 Assigning values to the temperature memory
buttons
Memory buttons "1" and "2" can each be assigned a preferred
temperature.
 Select the preferred temperature.
 To save the preferred temperature, press and hold button
"1" or "2" for more than 3seconds. The selected temperature
flashes once to confirm.
4.7 Inlet temperature information
If the appliance is operated with preheated water and the inlet
temperature exceeds the selected set temperature, the inlet tem-
perature is indicated on the second display line and flashes. The
water is not heated further.
4.8 Info menu
The appliance has an additional display where consumption values
can be shown.
4.8.1 Calling up the info menu
 Briefly press "i" until "i1" appears, then continue to press "i"
to see further menus.
 Exit the menu item by pressing "i" and holding for more than
5seconds. Alternatively: The system exits the menu item au-
tomatically 30seconds after the setting has been completed.
Menu Description Explanation Screen | display
I1 Flow rate The current flow rate
is shown.
Flow rate in l/min or
gpm
I2 Time The current time is
shown.
Time
I3 Energy consump-
tion
The amount of en-
ergy consumed is
shown.
Value in kWh
I4 Water consump-
tion
The amount of water
consumed is shown.
Value in m³ | gal
Note
The consumption values are calculated starting from the
last reset.

OPERATION
Settings and displays
ENGLISH
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4.9 Settings in the parameter menu
4.9.1 Activating the parameter menu
 Briefly press and hold "i" for more than 5seconds until "P1"
appears, then continue by briefly pressing "i".
 In the selected parameter menu, turn the temperature selec-
tor to the required display/ setting.
4.9.2 Parameter menu
Menu Description Selectable display | setting Explanation Symbol | display
P1 ECO OFF | ECO1 | ECO2 | ECO3 ECO water and energy saving function:
The ECO function enables you to limit the
flow rate to a maximum value.
– | | |
P2 Temperature limit (child-
proofing)
Temperature (in selected temperature
unit)
Childproofing allows you as a user to
limit the adjustable temperature at the
appliance to a maximum value. Check
that the upper temperature limit has
been correctly applied.
P3 Wellness showers [OFF,
1 - 4]
OFF | 1 | 2 | 3 | 4 The Wellness shower program lets you
choose from different programs for hot/
cold contrast showers.
P4 Automatic water volume
control – set the volume
in the selected unit
OFF | 5 | 10 | ... 200l or 2 ... 52gal The automatic water volume control
allows you to limit the volume of water
at a high flow rate. When the selected
volume of water is reached, the control
automatically reduces the flow rate. The
required temperature is maintained. The
automatic water volume control must be
enabled on each occasion prior to filling
the bath.
P5 Temperature unit C | F Select the temperature unit for all set-
tings.
°C| °F
P6 Volume unit L | GAL Select the volume unit for all settings. l | gal
P7 Time format 24h | 12h
P8 Time setting --:-- Setting for the selected time format. AM | PM (only for 12h)
P9 Operating lock ON | OFF Operation blocked (only when ON)
P10 Reset to factory settings Reset ( ) To reset, see chapter "Further informa-
tion on the parameter menu/ Description
P10".
P11 Resetting the consump-
tion values
Reset ( |
To reset, see chapter "Further informa-
tion on the parameter menu/ Description
P11".
P12 Backlighting Auto | On Enable either continuous illumination, or
automatic illumination when buttons are
pressed or water is drawn off.
P13 Reduce backlighting 100% | 50% ( ) Adjustable display backlighting.
4.9.3 Deactivating the parameter menu
 Exit the menu item by pressing "i" and holding for more than
5seconds. Alternatively: The system exits the menu item au-
tomatically 30seconds after the setting has been completed.

OPERATION
Settings and displays
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4.9.4 Further information on the parameter menu
P1: ECO water and energy saving function
The ECO function enables you to limit the flow rate to a maximum
value.
ECO level Display
shows
Flow rate limitation
ECO1 6l/min
ECO2 5l/min
ECO3 4l/min
OFF No symbol No flow rate limit
P2: Temperature limit (childproofing)
The temperature limit allows you as a user to restrict the ad-
justable 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.
P3: Wellness showers
The Wellness shower program lets you choose between 4 differ-
ent hot/cold contrast showers.
WW = warm water, KW = cold water
min = minutes, sec = seconds
Shown in °C
- 1 Cold prevention
To strengthen the body, we recommend finishing off with a cold
shower; this will trigger a reflex in the body to warm up.
WW
KW
3min
- 2 Winter pick-me-up
An invigorating end to a winter shower with a final warm-up.
WW
WW
3 min 10 sec
10 sec 10 sec 10 sec
WW - 10°C | 50°F
- 3 Summer fitness program
A quick contrast shower to increase fitness with a final warm-up.
WW
KW
3min 10 sec
10 sec
10 sec
10 sec
- 4 Circulation boost program
Shower your arms and legs with cold water to boost circulation.
Spray from the hands and feet towards the body. You can then
repeat this process with hot water.
WW
KW
3min 30 sec
20 sec
30 sec
20 sec
P4: Automatic water volume control
The automatic water volume control allows you to limit the volume
of water at a high flow rate. When the selected volume of water
is reached, the control automatically reduces the flow rate. The
required temperature is maintained. The automatic water volume
control must be enabled on each occasion prior to filling the bath.
Example, filling a bath with 80litres (21gallons): When the bath
has been filled with 80litres (21gallons) of water, the control
automatically reduces the flow rate to 4l/min (1gpm).
P5: Setting the temperature unit
Select the temperature unit for all settings.
P6: Setting the volume unit
Select the volume unit for all settings.
P7: Setting the time format
Select the time format for all settings.
P8: Setting the time
You can set the time using the 12 or 24hour clock:
- 12hours from 00:00 - 11:59= AM | 11:59 - 00:00= PM
- 24hours from 00:00 to 23:59
After a power cut, the time needs to be set again.
P9: Operating lock
You can set the operating lock to "ON" or "OFF".
To disable the set operating lock:
 Press and hold "i" for more than 10seconds.
P10: Resetting to factory settings
In menu item "P13", the appliance can be reset to its factory
settings. "rSEt" is shown on the display.
 Press and hold "1" and "2" simultaneously for more than
5seconds. The display switches to "On" to confirm the reset.
 To confirm "On", press and hold "i" for more than 5seconds.
P11: Resetting the consumption values
In menu item "P14", the consumption values can be reset. "rSEt"
is shown on the display.
 Press and hold "1" and "2" simultaneously for more than
5seconds. The display switches to "On" to confirm the reset.
 To confirm "On", press and hold "i" for more than 5seconds.
P12: Adjusting the backlighting
The display backlighting is adjustable.
- The backlighting switches on whenever the appliance is in
heating mode or when the user interface is operated.
- If there is no operation for 30seconds, the backlighting
switches off.
- If you select "On", the backlighting will remain on constantly.
P13: Reduce backlighting
There are 2 brightness levels for the backlighting: 100% | 50%

OPERATION
Cleaning, care and maintenance
ENGLISH
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4.10 Recommended settings
Your instantaneous water heater offers maximum precision and
maximum convenience in DHW provision. Should you nonetheless
operate the appliance with a thermostatic valve, we recommend
that you:
 Adjust the set temperature on the appliance to over 50°C.
Then set the required set temperature on the thermostatic
valve.
Saving energy
The following recommended settings will result in the lowest en-
ergy consumption:
- 38°C for hand washbasins, showers, bath
- 55°C for kitchen sinks
Internal anti-scalding protection (qualified contractors)
If required, the qualified contractor can set a permanent temper-
ature 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 appliance to the maximum
temperature.
Following an interruption to the water supply
!
Material losses
To ensure that the bare wire heating system is not dam-
aged 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
Problem Cause Remedy
The appliance will not
start despite the DHW
valve being fully open.
There is no power. Check the fuses/ MCBs in
your fuse box/ distribu-
tion board.
The aerator in the tap
or the shower head is
scaled up or dirty.
Clean and/or descale the
aerator or shower head.
The water supply has
been interrupted.
Vent the appliance and
the cold water inlet line.
When hot water is being
drawn off, cold water
flows for a short period.
The air sensor is detect-
ing air in the water. It
briefly switches off the
heating output.
The appliance restarts
automatically after
1minute.
The required tempera-
ture cannot be set.
The high limit safety
cut-out and/or internal
anti-scalding protection
is enabled.
Deactivate the temper-
ature limit. The internal
anti-scalding protection
can only be adjusted by a
qualified contractor.
The flow rate is too low. ECO function is enabled. Select a different ECO
level or disable the ECO
function.
Note
The information shown on the programming unit and the
selected settings are retained following a power failure
(with the exception of the time).
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-000000).
Nr.: 000000-0000-00000
D0000073621

INSTALLATION
Safety
10 | DCE-X Premium www.stiebel-eltron.com
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 maximum inlet temperature. Higher tem-
peratures may damage the appliance. You can limit the
maximum inlet temperature by installing a central ther-
mostatic valve.
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.
- Protection rating IP25 (hose-proof) is guaranteed only if
appropriate cable grommets and O-rings are fitted on the
45°twin connectors.
- The electrical resistivity of the water must not fall below that
stated on the type plate. In a linked water network, take into
consideration the lowest electrical resistivity of the water.
Your water supply utility will advise you of the electrical re-
sistivity or conductivity of the water in your area.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- 2 x 45° twin connectors
- 2 flat gaskets
- 2 O-rings
- Cable grommet
- Strainer
- Jumper for anti-scalding protection, attached
- Jumper for output changeover, attached
8.2 Accessories
Taps
- MEKD mono lever kitchen pressure tap
- MEBD mono lever bath pressure tap
Installation kit for water installation on unfinished walls
The following accessories are required for water installation on
unfinished walls:
- 2 x grommets to seal the apertures in the appliance back
panel.
- Strainer with sealed edge for installation on the 45°twin
connector.
- Flat gasket
Central thermostatic valve (ZTA3/4)
Use the thermostatic valve for central premixing, for example
when operating an instantaneous water heater with preheated
water. For use in shower operation, the valve must be set to a
maximum of 55°C.
9. Preparation
9.1 Installation site
!
Material losses
Install the appliance in a room that is free from the risk
of frost.
 Always install the appliance vertically and near the draw-off
point.
The appliance is suitable for undersink and oversink installation.
Undersink installation
D0000073616
1
2
1 Cold water inlet
2 DHW outlet
Oversink installation
12
D0000073617
1 Cold water inlet
2 DHW outlet