STIEBEL ELTRON DHB-E 11 LCD Instruction Manual

BEDIENUNG UND INSTALLATION
OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
BEDIENING EN INSTALLATIE
OBSLUHA A INSTALACE

Elektronisch geregelter Komfort-Durchlauferhitzer | Electronically controlled
comfort instantaneous water heater | Chauffe-eau instantané confort à régulation
électronique| Elektronisch geregelde comfort-doorstromer | Elektronicky
regulovaný komfortní průtokový ohřívač| 
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ENGLISH
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CONTENTS
SPECIAL INFORMATION
OPERATION
1. General information ��������������������������������������� 27
1.1 Safety instructions���������������������������������������������� 27
1.2 Other symbols in this documentation ���������������������� 27
1.3 Units of measurement ����������������������������������������� 27
2. Safety�������������������������������������������������������� 27
2.1 Intended use����������������������������������������������������� 27
2.2 General safety instructions ����������������������������������� 27
2.3 Test symbols ����������������������������������������������������� 28
2.4 EU Declaration of Conformity �������������������������������� 28
3. Appliance description ������������������������������������� 28
4. Settings and displays�������������������������������������� 28
4.1 Selecting the set temperature�������������������������������� 28
4.2 Recommended settings ��������������������������������������� 29
5. Cleaning, care and maintenance ������������������������� 29
6. Troubleshooting �������������������������������������������� 29
INSTALLATION
7. Safety�������������������������������������������������������� 30
7.1 General safety instructions ����������������������������������� 30
7.2 Shower operation�����������������������������������������������30
7.3 Instructions, standards and regulations �������������������30
8. Appliance description ������������������������������������� 30
8.1 Standard delivery�����������������������������������������������30
8.2 Accessories������������������������������������������������������� 30
9. Preparation ������������������������������������������������� 31
9.1 Installation location �������������������������������������������� 31
9.2 Minimum clearances������������������������������������������� 31
9.3 Water installation����������������������������������������������� 31
10. Installation�������������������������������������������������� 32
10.1 Standard installation������������������������������������������� 32
11. Commissioning ��������������������������������������������� 35
11.1 Preparation ������������������������������������������������������ 35
11.2 Initial start-up��������������������������������������������������� 35
11.3 Recommissioning�����������������������������������������������36
12. Appliance shutdown ��������������������������������������� 36
13. Alternative installation methods ������������������������� 36
13.1 Electrical connection from above on unfinished walls�� 36
13.2 Electrical connection on unfinished walls with short
power cable������������������������������������������������������ 36
13.3 Electrical connection on finished walls �������������������� 37
13.4 Connecting a load shedding relay��������������������������� 37
13.5 Water installation on finished walls ������������������������ 37
13.6 Water installation on finished walls with solder/
press-fit fittings ������������������������������������������������� 37
13.7 Fitting appliance cover over water installation on
finished walls����������������������������������������������������38
13.8 Lower back panel section installation with threaded
fittings on finished walls ��������������������������������������38
13.9 Wall mounting bracket when replacing appliance������� 38
13.10 Installation with offset tiles�����������������������������������38
13.11 Pivoting appliance cover �������������������������������������� 38
13.12 Operation with preheated water ���������������������������� 39
13.13 Horizontal installation of the appliance �������������������� 39
14. Service information���������������������������������������� 39
15. Troubleshooting �������������������������������������������� 40
16. Maintenance ������������������������������������������������ 41
17. Specification ������������������������������������������������ 41
17.1 Dimensions and connections��������������������������������� 41
17.2 Wiring diagram ������������������������������������������������� 41
17.3 Domestic hot water output ����������������������������������� 42
17.4 Application areas/ Conversion table ����������������������� 42
17.5 Pressure drop ��������������������������������������������������� 42
17.6 Fault conditions ������������������������������������������������� 42
17.7 Energy consumption data������������������������������������� 43
17.8 Data table �������������������������������������������������������� 43
GUARANTEE
ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION
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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. Children must
never clean the appliance or perform user
maintenance unless they are supervised.
-During operation, the tap can reach tempera-
tures up to 70°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). 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,
it must be ensured that the inlet temperature
does not exceed 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
ENGLISH
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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.
f 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.
f Read these texts carefully.
Symbol Meaning
Material losses
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
f 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 mm unless stated oth-
erwise.
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 up to
70°C. 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, a permanent
and unchangeable temperature limit is necessary. Ask
a qualified contractor to set the internal anti-scalding
protection.
!
!

OPERATION
Appliance description
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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 (e.g. ZTA3/4).
!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 potential risks. Children must never play
with the appliance. Children must never clean the ap-
pliance or perform user maintenance unless they are
supervised.
!Material losses
The user should protect the appliance and its tap against
frost.
2.3 Test symbols
See type plate on the appliance.
2.4 EU Declaration of Conformity
Note DHB-E LCD: STIEBELELTRON hereby declares that the
radio equipment type complies with Directive 2014/53/
EU. The full text of the EU Declaration of Conformity can
be found at the following internet address:
www.stiebel-eltron.de/downloads
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 tempera-
ture 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 au-
tomatic output matching maintains a consistent outlet tempera-
ture. 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 set temperature, the water is not heated
further.
Heating system
The bare wire heating system is enclosed within a pressure-tested
plastic jacket. The heating system with its stainless steel internal
indirect coil 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 large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, the appliance
shuts down for one minute, thereby protecting the heat-
ing system.
4. Settings and displays
4.1 Selecting the set temperature
D0000076841
2
1
3
1 Temperature selector for adjusting set temperature (no end-
stop): OFF, 20 - 60°C
2 Display
3 Temperature unit [°C/°F]
Temperature settings in steps
Temperature range Step Temperature range Step
20°C ... 60°C 1°C 68°F ... 140°F 1°F
Selecting the temperature indicator
You can choose to display the temperature in °C or °F, as required.
f Turn the temperature selector anti-clockwise, past the OFF
indicator and another five complete turns, until you find
yourself in temperature unit selection mode. Then select the
temperature unit using the temperature selector. After 30s,
the appliance exits selection mode automatically and the se-
lected temperature unit is retained.
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 Reduce the water volume until the preferred tem-
perature delivery is achieved.

OPERATION
Cleaning, care and maintenance
ENGLISH
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4.2 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 recom-
mend that you:
f 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
Temperature limit via internal anti-scalding protection
(qualified contractor)
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.
Limiting it in this way prevents water from flowing out of the
appliance at temperatures which could cause injury.
Recommended setting for operation with a thermostatic valve
and water preheated by solar energy
f 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 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.
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.
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 soiled.
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 detector detects
air in the water. It switch-
es off the heating output
briefly.
The appliance restarts
automatically after
1minute.
The required tempera-
ture cannot be set.
Internal anti-scalding
protection is activated.
The internal anti-scalding
protection can only be
adjusted by the qualified
contractor.
Note Programming unit displays and selected settings are re-
tained 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
Nr. 000000-0000-00000
D0000053312

INSTALLATION
Safety
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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
thermostatic valve (see chapter "Appliance description/
Accessories").
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 Shower operation
CAUTION Burns f When supplying a shower, set the internal an-
ti-scalding protection to 55°C or less; see chapter
"Commissioning/ Preparations".
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 (e.g. ZTA3/4).
7.3 Instructions, standards and regulations
Note Observe all applicable national and regional regulations
and instructions.
- The IP24/ IP25 protection rating can only be ensured with a
correctly fitted cable grommet.
- The specific electrical resistance of the water must not fall
below that stated on the type plate. In a linked water net-
work, factor in the lowest electrical resistance of the water.
Your water supply utility will advise you of the specific elec-
trical water resistance or conductivity.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
-Wall mounting bracket
- Installation template
-2 twin connectors
- 3-way ball shut-off valve for cold water
- Tee for domestic hot water
-Flat gaskets
-Strainer
- Plastic profile washer
- Plastic connection pieces/ Installation aid
- Cap and back panel guides
- Jumper for internal anti-scalding protection
- Jumper for changing the output (only for appliances with ad-
justable output)
8.2 Accessories
Wireless remote control
- FFB4SetEU
Taps/valves
- MEKD mono lever kitchen pressure tap
- MEBD mono lever bath pressure tap
Plugs G½A
If you use other than the recommended pressure taps on finished
walls, please use the plugs.
Installation set for finished walls
- Solder fitting - copper pipe for soldered connection Ø 12mm
- Press-fit fitting - copper pipe
- Press-fit fitting - plastic pipe (suitable for Viega: Sanfix-Plus
or Sanfix-Fosta)
Universal mounting frame
- Mounting frame with electrical connections
Pipe assembly for undersink appliances
You will need the undersink installation set if you make the water
connections (G⅜A) at the top of the appliance.
Pipe assembly for offset installation
Use this pipe assembly if you intend to offset the appliance by up
to 90mm downwards from the water connection.
Pipe assembly for replacing a gas water heater
You will need this pipe assembly set if the existing installation
has gas water heater connections (cold water connection on the
left-hand side, DHW connection on the right-hand side).

INSTALLATION
Preparation
ENGLISH
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Pipe assembly for DHB water plug-in couplings
Use the water plug-in couplings if the existing installation contains
water plug-in connections from a DHB water heater.
Load shedding relay (LR 1-A)
The load shedding relay for installation in the distribution board
provides priority control for the instantaneous water heater when
other appliances, suchas electric storage heaters, are being op-
erated simultaneously.
Central thermostatic valve (ZTA 3/4)
Use the thermostatic valve for central premixing when, forex-
ample, 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 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 in-
stallation methods/ Horizontal installation of the appliance".
The appliance is suitable for undersink and oversink installation.
Undersink installation
D0000056242
1
2
1 Cold water inlet
2 DHW outlet
Oversink installation
D0000057030
12
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
≥50≥50
≥90
≥90
D0000060809
f Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
9.3 Water installation
f Flush the water line thoroughly.
Taps/valves
Use appropriate pressure taps. Open vented taps are not per-
missible.
Note Never use the 3-way ball shut-off valve in the cold water
inlet to reduce the flow rate. The 3-way ball shut-off valve
is intended only to shut off the cold waterinlet.
Permissible water line materials
- Cold water inlet line:
Pipes made from galvanised steel, stainless steel, copper or
plastic
- DHW outlet line:
Pipes made from stainless steel, copper or plastic
!Material losses
If plastic pipework systems are used, take into account
the maximum inlet temperature and the maximum per-
missible pressure.
Flow rate
f Ensure that the flow rate for switching on the appliance is
achieved.
f Increase the water line pressure if the required flow rate
is not achieved when the draw-off valve is fully open. If
the flow rate is still not achieved, remove the flow limiter
(see chapter "Installation/ Installation/ Removing the flow
limiter").

INSTALLATION
Installation
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10. Installation
Factory settings DHB-E11/13LCD DHB-E18 LCD25A DHB-E 18/21/24LCD DHB-E27LCD
Internal anti-scalding protection °C 60 60 60 60
Connected load kW 13.5 18 21 27
Connected load options x - x -
Standard installation DHB-E11/13LCD DHB-E18 LCD25A DHB-E18/21/24LCD DHB-E27LCD
Electrical connection from below on unfinished walls x x x x
Water connection on unfinished walls x x x x
For further installation options, see chapter "Alternative instal-
lation methods".
10.1 Standard installation
Opening the appliance
D0000053271
f Open the appliance by holding the fascia at the side and pull-
ing forwards away from the appliance cover. Undo the screw.
Pivot open the appliance cover.
D0000053272
f Remove the back panel by pressing the two locking tabs and
pulling the lower section of the back panel forwards.
Preparing the power cable on unfinished walls, for connection
from below
160
30
D0000053273
1
1 Cable entry installation aid
f Prepare the power cable.
Fitting the wall mounting bracket
D0000059694
f Mark out the holes for drilling using the installation tem-
plate. If the appliance is to be installed on finished walls, also
mark out the fixing hole in the lower section of the template.
f Drill the holes and secure the wall mounting bracket at 2
points using suitable fixing materials (screws and rawl plugs
are not part of the standard delivery).
f Fit the wall mounting bracket.
Installing the twin connectors
!Material losses
Carry out all water connection and installation work in
accordance with regulations.
12
D0000053319
f Seal and insert the twin connectors.

INSTALLATION
Installation
ENGLISH
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Making the water connection
5 Nm
24
5 Nm
24
D0000085349
4
1
5
2
3
2
1 DHW with tee
2 Gasket
3 Cold water with 3-way ball shut-off valve
4 Strainer
5 Plastic profile washer
f Secure the tee and 3-way ball shut-off valve, each with a flat
gasket, to the twin nipples.
!Material losses
The strainer must be fitted for the appliance to function.
f When replacing an appliance, check whether the
strainer is installed.
Removing the flow limiter
Note If you are using a thermostatic valve, you must not re-
move the flow limiter.
If the flow rate is too low, remove the flow limiter. To do this,
remove the function module from the appliance back panel.
4.
2.
3.
1.
D0000085494
f Release the locking hook.
f Push the function module in the appliance back panel slightly
towards the back.
f Remove the function module from the appliance back panel
by pulling it slightly forwards and lifting it off.
D0000084719
4.
5.
2.
3.
1.
5
1 2 3
4
1 Flow limiter
2 O-ring
3 Cold water pipe bend with recess for locking clip
4 Locking clip
5 Heater
f Remove the cold water pipe bend and the O-ring.
f Remove the flow limiter from the cold water inlet of the heat-
er using a pointed object or suitable pliers.
f Refit the cold water pipe bend and the O-ring.
!Material losses
The O-ring must be fitted to prevent the appliance from
leaking.
f As part of installation, check that the O-ring is in
place.
f Secure the cold water pipe bend with the locking clip.
!Material losses
Ensure that the locking clip is located behind the recess
in the pipe bend and fixes the bend in position.
f Mount the function module in reverse order in the appliance
back panel until the function module clicks into place.