STIEBEL ELTRON HDB-E 12 Si Instruction Manual

BEDIENUNG UND INSTALLATION
OPERATION AND INSTALLATION
UTILISATION ET INSTALLATION
BEDIENING EN INSTALLATIE
OBSLUHA A INSTALACE
Elektronisch gesteuerter Durchlauferhitzer | Electronically controlled
instantaneous water heater | Chauffe-eau instantané à gestion électronique |
Elektronisch gestuurde doorstroomer | Elektronicky řízený průtokový ohřívač
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CONTENTS | SPECIAL INFORMATION
SPECIAL INFORMATION
OPERATION
1. General information ��������������������������������������� 19
1.1 Safety instructions���������������������������������������������� 19
1.2 Other symbols in this documentation ���������������������� 19
1.3 Units of measurement ����������������������������������������� 19
2. Safety�������������������������������������������������������� 19
2.1 Intended use����������������������������������������������������� 19
2.2 General safety instructions ����������������������������������� 19
2.3 Test symbols �����������������������������������������������������20
3. Appliance description ������������������������������������� 20
4. Operation ��������������������������������������������������� 20
5. Cleaning. care and maintenance ������������������������� 20
6. Troubleshooting �������������������������������������������� 20
INSTALLATION
7. Safety�������������������������������������������������������� 21
7.1 General safety instructions ����������������������������������� 21
7.2 Regulations. standards and instructions������������������� 21
8. Appliance description ������������������������������������� 21
8.1 Standard delivery����������������������������������������������� 21
8.2 Accessories������������������������������������������������������� 21
9. Preparations������������������������������������������������ 21
9.1 Installation site�������������������������������������������������� 22
9.2 Factory settings ������������������������������������������������� 22
10. Installation�������������������������������������������������� 22
10.1 Completing the installation����������������������������������� 25
10.2 Alternative installation methods����������������������������� 25
11. Commissioning ��������������������������������������������� 27
11.1 Commissioning�������������������������������������������������� 27
11.2 Recommissioning����������������������������������������������� 27
12. Shutting down���������������������������������������������� 27
13. Troubleshooting �������������������������������������������� 28
13.1 Display options for LED diagnostic traffic light ����������� 28
13.2 Fault table�������������������������������������������������������� 28
14. Maintenance ������������������������������������������������ 29
15. Specification ������������������������������������������������ 29
15.1 Dimensions and connections��������������������������������� 29
15.2 Wiring diagram ������������������������������������������������� 29
15.3 DHW output������������������������������������������������������ 30
15.4 Application areas/ conversion table ����������������������� 30
15.5 Pressure drop ��������������������������������������������������� 30
15.6 Fault conditions �������������������������������������������������30
15.7 Details on energy consumption������������������������������ 31
15.8 Data table �������������������������������������������������������� 31
GUARANTEE | ENVIRONMENT AND RECYCLING
SPECIAL INFORMATION
- The appliance may be used by children aged 8
and up and persons with reduced physical, sen-
sory 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 result-
ing risks. Children must never play with the ap-
pliance. Children must never clean the appliance
or perform user maintenance unless they are
supervised.
- Risk of scalding: The tap can reach temperatures
in excess of 60°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.
- Secure the appliance as described in chapter “In-
stallation/ Installation”.
- Observe the maximum permissible pressure (see
chapter “Installation/Specification/ Data table”).
- Drain the appliance as described in chap-
ter “Installation/ Maintenance/ Draining the
appliance”.

OPERATION
General information
ENGLISH
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OPERATION
1. General information
The chapter “Operation” is intended for appliance users and heat-
ing contractors.
The chapter “Installation” is intended for heating 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-
serious or minor injury.
1.2 Other symbols in this documentation
Note General information is identified by the symbol shown
on the left.
 Read these texts carefully.
Symbol Meaning
Material damage
(appliance. consequential and environmental 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 mm unless stated oth-
erwise.
2. Safety
2.1 Intended use
This appliance is designed for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-
domestic environment, e.g. in a small business, as long as it is
used in the same way.
This pressure appliance is designed to heat DHW. The appliance
can supply one or more draw-off points.
Any other use beyond that described shall be deemed inappropri-
ate. Observation of these instructions and of 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 of
around 55°C.
There is a risk of scalding at outlet temperatures in ex-
cess of 43 °C.
!WARNING Injury
The appliance may be used by children aged 8 and up
and persons with reduced physical, sensory or mental
capabilities or a lack of experience provided that they
are supervised or they have been instructed on how to
use the appliance safely and have understood the result-
ing risks. Children must never play with the appliance.
Children must never clean the appliance or perform user
maintenance unless they are supervised.
!Material damage
Protect the appliance and its tap against frost.
!
!

OPERATION
Appliance description
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2.3 Test symbols
See type plate on the appliance.
Country-specific approvals and certifications: Germany
A general test certificate [Germany] as verification of suitability
regarding noise emissions has been issued for this appliance.
based on the State Building Regulations [Germany].
DIN 4109
PA-IX 6816/I
3. Appliance description
The appliance heats potable water that flows through it. When
a DHW valve is opened. the heater starts automatically as soon
as the start-up volume has been reached. The heating output
is determined and matched by the flow rate and the cold water
temperature.
Heating system
The heating system is suitable for hard and soft water areas; it
is not susceptible to scale build-up. The heating system ensures
quick and efficient DHW availability.
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 heater shuts
down automatically for one minute. thereby protecting
the heating system.
Thermostatic valve
The appliance is suited to operation with a thermostatic valve.
4. Operation
The heating system of the appliance starts automatically and heats
the water as soon as you open the DHW valve at the tap.
Setting the DHW temperature
Should the outlet temperature fail to reach the required level with
the draw-off valve fully open. then more water flows through the
appliance than can be heated by the heating system.
 Reduce the flow rate with the draw-off valve.
Outlet capacities
Subject to season. different maximum mixed water or outlet ca-
pacities can result from varying cold water temperatures (see
chapter “Specification”).
Following an interruption of the water supply
See chapter “Restarting”
5. Cleaning. care and maintenance
 Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
 Check the taps/valves regularly. You can remove limescale
deposits at the tap outlets using commercially available des-
caling agents.
6. Troubleshooting
Fault Cause Remedy
The appliance will not
start in spite of a fully
open DHW valve.
There is no power. Check the fuse/MCB in
your fuse box/distribu-
tion panel.
Starting volume is not
achieved. The jet control-
ler in the tap or shower
head is scaled up or con-
taminated.
Clean and/or descale the
jet controller or shower
head.
The water supply has
been interrupted.
Vent the appliance and
the cold water inlet line
(see chapter “Commis-
sioning/ Restarting”).
Cold water flows briefly
while hot water is being
drawn.
The air sensor detects air
in the water and briefly
switches the heater off.
The appliance restarts
automatically after
1minute.
If you cannot remedy the fault. notify your heating contractor. To
facilitate and speed up your enquiry. please provide the serial
number from the type plate (000000-0000-000000):
HDB-E .. Nr.: 000000-0000-000000
26�02�02�1366

ENGLISH
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INSTALLATION
Safety
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 operation and operational reliability
only if the original accessories and spare parts intended for the
appliance are used.
!Material damage
Observe the maximum inlet temperature. The appliance
can be damaged by higher temperatures.
7.2 Regulations. standards and instructions
Note Observe all applicable national and local instructions and
regulations. e.g. DIN1988/ DINEN806 in Germany.
- The protection rating IP 25 (hoseproof) 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. observe the lowest electrical water resistance (see
chapter “Specification / Application areas”). Your water
supply utility will advise you of the specific electrical water
resistance or conductivity.
8. Appliance description
8.1 Standard delivery
- Mounting bracket
- Installation template
- Twin nipple
- Cross-piece
- DHW tee
- Flat gaskets
- Sieve
- Flow limiter
- Plastic profile washer
- Plastic cap
- Flexible plastic couplings
- Cap and back panel guides
8.2 Accessories
Taps
- MEKD - Pressure-tested kitchen tap
- MEBD - Pressure-tested bath tap
Plug G½A
These plugs are required if you use pressure-tested taps for fin-
ished walls other than the ones recommended by us.
Installation sets for installation on finished walls
- Solder fitting - copper pipe for solder connection Ø 12mm.
- Compression fitting - copper pipe.
- Compression fitting - plastic pipe (suitable for Viega: Sanfix-
Plus or Sanfix-Fosta).
Universal mounting frame
Mounting frame with electrical connections.
Pipe assembly DHB water plug-in couplings
2 water plug-in couplings allow the appliance to be connected to
the available water plug-in connections of a DHB.
Load shedding relay (LR 1-A)
The load shedding relay which needs to be installed in the dis-
tribution board provides priority control for the instantaneous
water heater when operating. for example. electric storage heat-
ers simultaneously.
9. Preparations
 Flush the water line thoroughly.
Taps/valves
 Use appropriate pressure-tested Taps (see “Appliance
description / Accessories” chapter). Open taps are not
permitted.
A safety valve is not required.
!Material damage
If plastic pipework systems are used. take into account
the maximum inlet temperature and the maximum pres-
sure (see chapter “Specification / Data table”).
Permissible water pipe materials
- Cold water inlet pipe:
Galvanised steel pipe. stainless steel pipe. copper pipe or
plastic pipe
- DHW outlet pipe:
Stainless steel pipe. copper pipe or plastic pipe
!Material damage
If plastic pipework systems are used. take into account
the maximum inlet temperature and the maximum pres-
sure (see chapter “Specification / Data table”).
Flow rate
 Ensure that the flow rate (see chapter “Specification / Data
table”. On) for switching on the appliance is achieved.
 Increase the mains water pressure if the required flow rate is
not achieved with the draw-off valve fully opened.

22 | HDB-E Si www.stiebel-eltron.com
INSTALLATION
Installation
Flow pressure
If the minimum flow rate required for the appliance to switch on is
not achieved even with the tap fully open. remove the flow limiter.
Replace it with the plastic profile washer supplied. If required the
pressure in the water installation can also be raised.
26�02�02�0820
2 1
1 Flow limiter
2 Plastic profile washer
Note Always use a flow limiter when operating the appliance
with a thermostatic valve.
Flexible water connection lines
 If the appliance is installed with flexible water connection
lines. ensure that the pipe bends do not become twisted.
Pipe bends have a bayonet fitting and are installed inside the
appliance.
 Secure the back panel at the bottom with an additional
screw.
9.1 Installation site
!Material damage
Install the appliance in a room free from the risk of frost.
 Always install the appliance vertically near the draw-off
point.
The appliance is suitable for undersink and oversink installations.
Note The appliance must be fitted to a wall with sufficient
load-bearing capacity.
Undersink installation
26�02�02�1373
1
2
1 Cold water inlet
2 DHW outlet
Oversink installation
26�02�02�1374
12
1 Cold water inlet
2 DHW outlet
9.2 Factory settings
The appliances are prepared in the delivered condition:
- Power supply from “below”. installation on unfinished walls
- Water connection. installation on unfinished walls
10. Installation
This chapter describes installation in accordance with the factory
settings.
For further installation options. see chapter “Installation alterna-
tives”.
26�02�02�1367
 Open the appliance.

ENGLISH
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INSTALLATION
Installation
26�02�02�1101
 Press the two locking hooks and remove the lower part of
the back panel towards the front.
26�02�02�0810�
 Mark out the holes for drilling using the installation template.
 Drill the holes and secure the mounting bracket with
2screws and 2rawl plugs (screws and rawl plugs are not
part of the standard delivery).
Note If you are installing the appliance with flexible water con-
nections. secure the back panel with a screw.
 Fit the mounting bracket.
160
≥ 30
26�02�02�0887
 Prepare the power cable.
Making the water connection
!Material damage
Carry out all water connection and installation work in
accordance with regulations.
12
D0000053319
 Seal and insert the twin nipples.
1 2
26�02�02�0799
1 DHW tee
2 Cross-piece
 Secure the tee and cross-piece, with a flat gasket each, to the
twin nipples.
Fitting the strainer
!Material damage
The strainer must be fitted for the appliance to function.
 When replacing the appliance. check that the strain-
er is present.
26�02�02�0856
 Fit the strainer provided in the cold water inlet of the
appliance.
Installing the DMB flow limiter
26�02�02�0857
 Install the flow limiter provided in the cold water inlet of the
appliance.

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INSTALLATION
Installation
Installing the appliance
26�02�02�0811
 For easy installation. push the cable grommet of the upper
electrical connection into the back panel from behind.
 Remove the transport plugs from the water connections.
 Remove the fixing toggle from the upper part of the back
panel.
 Route the power cable from behind through the cable grom-
met until it rests against the cable sheath. Align the power
cable.
In the case of a cross-section >6mm². enlarge the hole in
the cable grommet.
 Push the appliance over the threaded stud of the mounting
bracket. so that it breaks through the soft seal. If necessary.
use a screwdriver.
 Push the fixing toggle onto the threaded stud of the mount-
ing bracket.
 Press the back panel firmly into place and lock the fixing tog-
gle by turning it through 90°.
26�02�02�0858
 Fit the pipes with flat gaskets onto the twin nipples.
Connecting the power supply
WARNING Electrocution Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution Connection to the power supply is only permissible in the
form of a permanent connection in conjunction with the
removable cable grommet. The appliance must be able
to be separated from the power supply by an isolator
that disconnects all poles with at least 3 mm contact
separation.
WARNING Electrocution Ensure that the appliance is earthed.
26�02�02�1122�
 Connect the power cable to the mains terminal (see chapter
“Specification / Wiring diagram”). The specified voltage must
match the mains voltage.

ENGLISH
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INSTALLATION
Installation
10.1 Completing the installation
26�02�02�1102�
 Fit the lower part of the back panel. Ensure that it clicks into
place.
 Align the appliance by carrying out the following: Loosen
the fixing toggle and align the power supply and back panel.
Retighten the fixing toggle. If the back panel of the appliance
is not flush. the appliance can be secured at the bottom with
an additional screw.
10.2 Alternative installation methods
- Power supply from above for unfinished walls
- large cross-section for power supply from below
- Connecting a load shedding relay
- Water installation for finished walls
- Water installation for finished walls with solder/compression
fitting
- Water installation on finished walls. fitting the appliance cap
- Installing lower part of back panel
- Use of existing mounting bracket when replacing an
appliance
- Installation for offset tiles
Power supply from above for unfinished walls
26�02�02�1123�
 Cut off the cable grommet for the power cable.
 Push down and remove the locking hook that secures the
mains terminal. then remove the mains terminal.
 Reposition the mains terminal from the bottom to the top.
Secure the mains terminal by pushing it under the locking
hook.
Conductor cross-sections for power supply from below
If cables with a large cross-section are used. the cable grommet
can be fitted after the appliance has been installed.
1.
3. 4.
2.
26�02�02�1370
 Before installing the appliance. use a screwdriver to push the
cable grommet out.
 Push the cable grommet over the power cable. In the case
of a cross-section >6mm². enlarge the hole in the cable
grommet.
 Push the cable grommet into the back panel and click grom-
met into place.
Connecting a load shedding relay
Install the load shedding relay in the distribution board in conjunc-
tion with other electric appliances. e.g. electric storage heaters.
The relay responds when the instantaneous water heater starts.
The load shedding relay is available as an accessory.
!Material damage
Connect the phase that switches the load shedding relay
to the indicated terminal of the mains terminal in the
appliance (see chapter “Specification / Wiring diagram”).
Water installation for finished walls
Suitable pressure-tested taps can be ordered as accessories.
D0000033104
1
2
1 Water plugs
2 Taps

26 | HDB-E Si www.stiebel-eltron.com
INSTALLATION
Installation
 Fit the water plugs with gaskets to seal the connection below
the plaster. With twin-lever pressure-tested taps. the plugs
and gaskets are part of the standard delivery. For pressure-
tested taps other than those recommended by us. plugs and
gaskets can be ordered as accessories.
 Install the tap.
 Push the lower part of the back panel under the connecting
pipes of the tap and push it into the back panel.
 Secure the connecting pipes to the appliance.
Water installation for finished walls with solder/compression
fitting
You can connect copper or plastic pipes with the accessories “sol-
der fitting” or “compression fitting”.
With the “solder fitting” with threaded connection for 12mm cop-
per pipe. proceed as follows:
 Push the union nuts over the connecting pipes.
 Solder the inserts to the copper pipes.
 Push the lower part of the back panel under the connecting
pipes of the tap and push it into the back panel.
 Secure the connecting pipes to the appliance.
Note Observe the tap/valve manufacturer's instructions!
Water installation on finished walls. fitting the appliance cap
see “Appliance description / Accessories” chapter.
2
3
1
26�02�02�0919
1 Cap guides
2 Knock-out
3 Screw
 Cleanly break out the knock-outs in the appliance cap. If nec-
essary. use a file.
 Push the cap guides provided into the knock-outs.
 Secure the back panel at the bottom with a screw. This is
also relevant if flexible water pipework is used.
Installing lower part of back panel
If using threaded connections for finished walls. the lower part of
the back panel can also be installed after fitting the taps/valves.
To do this. carry out the following steps:
 Cut open the lower part of the back panel.
 Fit the lower part of the back panel by bending it out at the
sides and guiding it over the pipes.
 Insert the connection pieces from behind into the lower part
of the back panel.
 Click the lower part of the back panel into place.
 Secure the lower part of the back panel with a screw.
2
1
3
26�02�02�1080
1 Lower part of back panel
2 Connection piece from the pack
3 Screw
Mounting bracket for appliance replacement
Am existing StiebelEltron mounting bracket may be used when
replacing appliances (except instantaneous water heater DHF).
 Break through the back panel of the appliance for the thread-
ed stud on the pre-installed mounting bracket.
DHF replacement
26�02�02�0815�
 Reposition the threaded stud on the mounting bracket (the
stud has a self-tapping thread).
 Rotate the mounting bracket through 180° and mount it on
the wall (the DHF logo is then turned towards the reader).
Installation for offset tiles
110
20
26�02�02�1371
2
1
1 Minimum contact area of the appliance
2 Maximum tile offset