STIEBEL ELTRON DHB-E 16-2 User manual

OPERATING AND INSTALLATION INSTRUCTIONS
INSTRUCCIONES DE USO Y MONTAJE
ELECTRONICALLY CONTROLLED INSTANTANEOUS WATER HEATER |
CALENTADOR INSTANTÁNEO CON CONTROLADO ELECTRÓNICA
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Operation
General information
1. General information
The chapter Operation is intended for the user and the heating
contractor.
The chapter Installation is intended for heating contractors.
Please read carefully.
Read these instructions carefully before using the ap-
pliance and retain them for future reference. If the ap-
pliance is passed on to a third party please hand these
instructions to the new user.
1.1 Key
In this documentation you will come across symbols and highlights
that are defined as follows:
1.1.1 Symbols in this documentation
Risk of injury!
Information regarding possible risks of injury for
installer or users and potential equipment damage.
Danger to life through electrocution!
Risk of scalding!
!
Risk of damage!
Information regarding potentially dangerous situations
that might occur during the appliance installation or
operation, the consequences of which may be damage to
the appliance, environmental pollution or material loss.
Please read carefully.
Read this section carefully.
 Passages with this symbol "»" indicate step-by-step proce-
dures you must carry out.
- Passages with this symbol "–" indicate lists.
1.1.2 Symbols on the appliance
Disposal Appliances with this identification, batteries and re-
chargeable batteries are unsuitable for general domes-
tic waste. Please dispose of these separately.
OPERATION ����������������������������������������������������������2
1. General information �����������������������������������������2
1.1 Key������������������������������������������������������������������ 2
2. Safety����������������������������������������������������������3
2.1 Correct use�������������������������������������������������������� 3
2.2 Safety instructions����������������������������������������������� 3
2.3 CE designation ��������������������������������������������������� 3
3. Equipment description ��������������������������������������3
4. Operation �����������������������������������������������������3
4.1 Temperature selector ������������������������������������������� 3
4.2 Draw-off capacities���������������������������������������������� 3
4.3 Thermostatic valve ���������������������������������������������� 3
5. Cleaning, care and maintenance ���������������������������3
6. What to do if...������������������������������������������������4
6.1 ...the water supply is interrupted? ��������������������������� 4
6.2 ...faults occur on the appliance?������������������������������ 4
INSTALLATION ������������������������������������������������������4
7. Safety����������������������������������������������������������5
7.1 General safety instructions ������������������������������������ 5
7.2 Instructions, standards and regulations �������������������� 5
7.3 Water installation������������������������������������������������ 5
7.4 Risk of frost ������������������������������������������������������� 5
8. Equipment description ��������������������������������������5
8.1 Standard delivery������������������������������������������������ 5
8.2 Assembly ���������������������������������������������������������� 5
8.3 Installation versions��������������������������������������������� 6
8.4 Special accessories ���������������������������������������������� 6
9. Installation����������������������������������������������������7
9.1 Installation instructions ������������������������������������7
10. Assembly������������������������������������������������������7
10.1 Installation location ��������������������������������������������� 7
10.2 Assembly ���������������������������������������������������������� 8
10.3 Installation versions�������������������������������������������� 10
11. Commissioning ��������������������������������������������� 13
11.1 Initial start-up��������������������������������������������������� 13
12. Appliance handover���������������������������������������� 14
13. Troubleshooting �������������������������������������������� 14
13.1 Display options LED diagnostic "traffic lights" ������������ 14
13.2 Fault table�������������������������������������������������������� 15
14. Specification ������������������������������������������������ 16
14.1 Dimensioned drawing ����������������������������������������� 16
14.2 Wiring diagram ������������������������������������������������� 16
14.3 Mixed water volume ������������������������������������������� 16
14.4 Applications / Conversion table������������������������������ 16
14.5 Specification ����������������������������������������������������� 17
14.6 Extreme operating conditions and fault
conditions �������������������������������������������������������� 17
CUSTOMER SERVICE AND WARRANTY��������������������������� 18
ENVIRONMENT AND RECYCLING ��������������������������������� 18
OPERATION

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ENGLISH
Operation
Safety
2. Safety
2.1 Correct use
This appliance is a pressure device for the heating of cold water to
EN 806 that can supply one or several draw-off points.
Any other use beyond that described shall be deemed inappropri-
ate. Observation of these instructions is also part of the correct
use of the appliance. Any changes or conversions to the appliance
void any warranty.
2.2 Safety instructions
Observe the following safety information and instructions.
Only heating contractors should install and commission the ap-
pliance.
The contractor is responsible for adherence to all currently ap-
plicable regulations during installation and commissioning.
Operate this appliance only if it is fully installed and all safety
equipment is fitted.
Risk of scalding!
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.
!
Risk of damage!
Do not operate the appliance following an in-
terruption to the water supply. This can destroy
the bare wire heating system. Run water for at
least a minute before restarting the appliance
(see chapter "What to do if...").
2.3 CE designation
The CE designation shows that the appliance meets all the es-
sential requirements:
- Electromagnetic Compatibility Directive (Council Directive
2004/108/EC)
- Low Voltage Directive (Council Directive 2006/95/EC)
3. Equipment description
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.
The appliance heats water as it flows through it. The DHW outlet
temperature can be infinitely adjusted on the temperature selec-
tor. From a certain flow rate, the control unit regulates the correct
heating output, subject to the temperature selected and the cold
water temperature.
The appliance is equipped with an air detector that largely pre-
vents damage to the heating system. If air is drawn in during
operation, the appliance shuts down for one minute, thereby pro-
tecting the heating system.
4. Operation
4.1 Temperature selector
Temperature selector
26�02�02�0854
You can select the required temperature at the temperature selec-
tor anywhere from 30 to 60°C.
Should the outlet temperature fail to reach the required level with
the draw-off valve fully open and the temperature selector set
to maximum (temperature selector turned fully clockwise), then
more water flows through the appliance than can be heated by
the heating element.
 Reduce the flow rate with the draw-off valve.
4.2 Draw-off capacities
Subject to season, different maximum mixed water or draw-off ca-
pacities can result from different cold water temperatures. Further
information can be found in the chapter "Specification".
4.3 Thermostatic valve
We recommend adjusting the appliance to the maximum tem-
perature setting (temperature selector turned fully clockwise).
5. Cleaning, care and maintenance
 Do not use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
Maintenance work, such as checking the electrical safety, must
only be carried out by a heating contractor.

4 |DHB-E electronic www.stiebel-eltron.com
Operation
What to do if...
6. What to do if...
6.1 ...the water supply is interrupted?
!
Risk of damage!
After an interruption to the water supply, take
the following steps, prior to returning the appliance
into use.
 Remove fuses or trip the appropriate MCBs.
 Open a draw-off valve, downstream of the appliance long
enough to vent all air from the appliance and its upstream
cold water supply line.
 Replace the fuses upstream or reset the relevant MCBs.
6.2 ...faults occur on the appliance?
Fault Cause Remedy
The appliance will not
start in spite of a fully
open DHW valve.
There is no voltage. Check the fuse/MCB in
your fuse box/distribu-
tion panel.
Cold water flows briefly
while hot water is being
drawn.
Starting volume is not
achieved. The perlator in
the tap or shower head is
scaled up or dirty.
Clean and/or descale the
perlator or the shower
head.
The heating system is
faulty.
Telephone your heating
contractor.
The air sensor detects air
in the water and briefly
switches the heater OFF.
The appliance restarts
automatically after one
minute.
If you cannot remedy the fault, contact your heating contractor.
To speed your enquiry, please provide the serial number from the
type plate (no. 000000-0000-000000):
Type plate example
electronic
electroni c
26�02�02�0851
INSTALLATION

ENGLISH
Installation
Safety
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7. Safety
7.1 General safety instructions
All required steps to complete commissioning must be carried
out by a heating contractor. During this process, these installation
instructions must be observed.
We guarantee trouble-free function and operational reliability
only if the original accessories and spare parts intended for the
appliance are used.
7.2 Instructions, standards and regulations
!
Risk of damage!
Observe the type plate. The stated voltage must match
the mains voltage.
Danger to life through electrocution!
All electrical connection and installation work must
be conducted in accordance with VDE regulations
(DINVDE0100) [or local regulations], the rules of your
local power supply utility and relevant national and
local regulations.
Danger to life through electrocution!
Connection to the power supply is only possible as a
fixed connection. The appliance must be able to be
separated from the mains power supply by an isolator
that disconnects all poles with at least 3 mm contact
separation.
!
Risk of damage!
Observe all national and local instructions and regula-
tions relating to water connection, e.g. the DIN 1988 in
Germany.
- The protection IP 25 (hoseproof) can only be ensured with a
correctly fitted cable grommet.
- The specific electrical resistance of the water used must not
fall below that stated on the type plate. In a linked water
network, observe the lowest electrical water resistance
(see chapter "Application areas"). Your water supply utility
will advise you of the specific electrical water resistance or
conductivity.
7.3 Water installation
7.3.1 Cold water line
We approve steel or copper pipes or plastic pipework.
7.3.2 DHW line
We approve copper or plastic pipework.
!
Risk of damage!
If plastic pipework is used, take into account the most
extreme operating and fault conditions that can occur
in the appliance.
Plastic pipe manufacturer. Observe the plastic pipe manufacturer's instructions.
- A safety valve in the hot water pipe is not permissible.
- Never operate with pre-heated water ≥45°C.
- Never operate with valves intended for open vented
appliances.
7.4 Risk of frost
The installation of the appliance must be carried out in a room
free from the risk of frost.
 Store the dismantled appliance in a room free from the risk
of frost, as water residues remaining inside the appliance can
freeze and cause damage.
8. Equipment description
The bare wire heating system is suitable for hard and soft water
areas. The heater has low susceptibility to scale build-up.
The outlet temperature can be infinitely adjusted. The electronic
control unit enables automatic matching of the electrical output
corresponding to the selected temperature subject to the actual
throughput.
8.1 Standard delivery
- Mounting bracket
- Installation template
- Twin nipple
- Cross-piece
- Tee
- Flat packing
- Sieve
- Flow limiter
- Plastic profile washer
- Plastic cap
- Flexible plastic couplings
- Cap guides
8.2 Assembly
The following conditions have been prepared for the appliance
at the factory:
- Power supply from "rear", installation on unfinished walls
- Water connection, installation on unfinished walls
The appliance must be fitted vertically, over or undersink, to a
solid wall.
INSTALLATION

Installation
Equipment description
6 |DHB-E electronic www.stiebel-eltron.com
8.3 Installation versions
The following installation versions are possible/permissible:
- Power supply for unfinished walls from above
- Power supply for finished walls
- Water installation for finished walls
- Installation with repositioned appliance cap
- Installation for offset tiles
- Installation of a load shedding relay
8.4 Special accessories
8.4.1 Twin-lever taps (mains pressure)
- WKMD - kitchen tap, part number 222437
- WBMD - bathroom tap, part number 222438
8.4.2 Installation accessories
- Pipe assembly, undersink installation, part no. 070565,
connections: Finished walls, G 3/8", top.
- 2 pce. G ½" water plug set, part number 074326.
These plugs are required for third party pressure valves.
8.4.3 Installation sets for installation on finished walls
- Solder fitting - copper pipe, part no. 074019, comprising: 2
water plugs G ½" and 2 union nuts ½" with insert for solder
fitting Ø 12 mm.
- Compression fitting - copper pipe, part no. 222380, compris-
ing:
2 water plugs G ½" and 2 compression fittings ½" x 15 mm,
plus gaskets.
- Compression fitting - plastic pipe, part no. 222381, compris-
ing:
2 water plugs G ½" and 2 compression fittings ½“ x 16 mm
(Viega: Sanfix-Plus or Sanfix-Fosta), plus gaskets.
8.4.4 Universal mounting frame
Part no. 220291, comprising: Mounting frame with electrical wir-
ing. This assembly creates a gap of 30 mm between the device back
panel and the installation wall. This enables the power supply to
be freely routed over unfinished walls behind the appliance. This
increases the equipment depth by 30 mm. This set reduces the
protection to IP 24 (splashproof).
8.4.5 Offset installation pipe assembly
Part no. 220290, comprising: Universal mounting frame (for tech-
nical description, see part number 220291) and pipe bends for
the vertical offset of the appliance against the water connection
by 90 mm downwards.
8.4.6 Pipe assembly, replacement of a gas fired water heater
Part no. 220510, comprising: Universal mounting frame (for tech-
nical description see part number220291) and pipe bends for
installation with existing gas fired water heater connections (cold
water connection on the left; DHW connection on the right).
8.4.7 DHB replacement pipe assembly
Part no. 159876, comprising: 2 water couplings. These allow the
appliance to be connected to the available water plug-in connec-
tions of a DHB.
8.4.8 Load shedding relay LR 1-A
Part number 001786. The load shedding relay enables operation
with, for example, electric storage heaters. The instantaneous
water heater is operated via the load shedding relay prior to any
other appliance.

ENGLISH
Installation
Installation
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9. Installation
9.1 Installation instructions
9.1.1 Flow pressure
If the 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.
Thermostatic valves
For the thermostatic valve to function correctly, the flow
limiter for this valve must not be replaced with the plas-
tic profile washer.
Installing flow limiter or plastic profile washer
2
1
26�02�02�0820
1 Flow limiter
2 Plastic profile washer
9.1.2 Flexible water connection lines
If the appliance is connected with flexible water connection lines,
ensure that the bayonet fittings of the pipe bends do not become
twisted inside the appliance.
10. Assembly
10.1 Installation location
The appliance is exclusively designed for installation on a solid
wall. Ensure the wall offers adequate load bearing capacity.
Always install the appliance vertically (over or undersink) in a
room free from the risk of frost.
10.1.1 Undersink
1
2
Undersink installation
26�02�02�0844
1 Cold water inlet
2 DHW outlet
10.1.2 Oversink
Oversink installation
2 1
26�02�02�0845
1 Cold water inlet
2 DHW outlet

Installation
Assembly
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10.2 Assembly
Opening the appliance
electronic
electronic
26�02�02�0850
26�02�02�1001
Removing lower part of back panel
 Press the two locking hooks on the r.h. and l.h. side and re-
move the lower part towards the front.
Fitting the mounting bracket
26�02�02�0810
 Mark out the holes for drilling using the installation tem-
plate. If the appliance is to be installed with water connec-
tions for finished walls, the fixing hole in the lower part of
the template must also be marked out.
 Drill the holes and secure the mounting bracket with
twoscrews and two rawl plugs. The screws and rawl plugs
are not part of the standard delivery.
Fitting the power cable
160
30
26�02�02�0824
 Prepare the power cable.
 Use the plastic cap as an installation aid.
Sealing in and inserting twin nipples
26�02�02�0798
Water connection
12
26�02�02�0799
1 Tee
2 Cross-piece
 Secure the tee and cross-piece to the twin nipples with
flat packing.
 Thoroughly flush the cold water supply line.
Three-way shut-off valve
Never use the three-way shut-off valve to reduce the
flow rate. It is designed exclusively for shutting off the
line.
Fitting the sieve
26�02�02�0856
 Fit the sieve provided in the cold water inlet of the appliance.
Sieve
The sieve must always be fitted for the function of the
appliance to be guaranteed. If an appliance is being
replaced during installation, ensure that a sieve is avail-
able.

ENGLISH
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Installation
Assembly
Installing the flow limite
26�02�02�0857
 Position the flow limiter provided in the cold water inlet of
the appliance.
The cable grommet pointing towards the wall may hinder the
mounting of the appliance close to the wall. To prevent such prob-
lems, it is advisable to briefly press the cable grommet from be-
hind into the back panel, to reduce the stiffness of the grommet.
Mounting the appliance
26�02�02�0811
 Remove the fixing toggle from the upper part of the back
panel (diagram "Mounting the appliance").
 Insert the power cable from the back through the cable
grommet, until the external cable insulation is surrounded
by the cable grommet. Align the power cable. If the cross-
section of the power cable is greater than 6mm², enlarge the
hole in the cable grommet (see also "Power supply for larger
cross-sections").
 Push the appliance over the stud of the mounting bracket, so
that it breaks through the soft seal. If necessary pierce the
soft seal with a screwdriver.
 Push the fixing toggle onto the stud of the mounting bracket
that penetrates the back panel.
 Press the back panel firmly into place and lock the fixing tog-
gle by turning it through 90°.
Water connection
26�02�02�0858
Power connection
26�02�02�1122
 Connect the power cable to the mains terminal (see chapter
"Wiring diagram").
Earth connection Ensure that the appliance is connected to earth.
Installing and securing lower part of back panel
26�02�02�1102
 Align the mounted appliance by loosening the fixing toggle,
aligning the power supply and back panel, and then retight-
ening the fixing toggle. If the back panel of the appliance is
not flush against the wall, the appliance can be fixed with a
screw in the lower part.

Installation
Assembly
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10.3 Installation versions
10.3.1 Power supply for unfinished walls at the top
The following diagram shows the dimensions for the power sup-
ply.
Dimensions for power connection
165
50
44
30
35
72
325
338
47
b03
b02
b04
b04
b04
b04 b04
D0000019212
b02 Cable entry 1
b03 Cable entry 2
b04 Cable entry 3
To connect the power supply, take the following steps:
 Open out the cable grommet to match the cross-section of
the power cable.
 Push down and remove the locking hook that secures the
mains terminal.
 Move the mains terminal in the appliance from the bottom to
the top and click into place.
Power supply from above
26�02�02�1123
10.3.2 Power supply for finished walls
The appliance can also be connected if the power supply has been
routed over finished walls. This applies to the connection from
below or from the sides. Take the following steps:
 Cut or break knock-outs in the back panel and appliance cap.
Possible knock-outs can be seen in the diagram "Dimensions
for power connection from above for finished".
Changing the type of protection. If the appliance has been connected with a power sup-
ply on finished walls, the type of protection on the type
plate must be changed from IP 25 to IP 24. Use a ball
pen.
 Cross out "IP 25" and mark the box "IP 24".
10.3.3 Power supply for large cross-sections
Removing and installing the cable grommet
1.
3. 4.
2.
26�02�02�1124
If cables with a large cross-section are used, the cable grommet
can be fitted after the appliance has been installed. Take the fol-
lowing steps:
 Before installing the appliance, use a screwdriver to push the
cable grommet out.
 Push the appliance over the stud of the mounting bracket, so
that it breaks through the soft seal.
 Push the fixing toggle onto the stud of the mounting bracket
that penetrates the back panel.
 Press the back panel firmly into place and lock the fixing tog-
gle by turning it through 90°.
 Push the cable grommet over the power cable. For this, use
the installation aid. For a power cable of 10 or 16 mm², the
hole in the cable grommet must be enlarged. Click the cable
grommet into place in the back panel.

ENGLISH
Installation
Assembly
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10.3.4 Connecting a load shedding relay
Install the load shedding relay in conjunction with other electric
appliances, e.g. electric storage heaters. The relay responds when
the instantaneous water heater starts. The load shedding relay is
available from Stiebel Eltron as a special accessory.
Phase connection
Connect the phase that switches the load shedding relay
to the indicated terminal of the mains terminal in the
appliance.
Priority control with LR 1-A
2
1
85�02�02�0003
1 Control cable to the contactor of the second appliance (e.g.
electric storage heater).
2 Control contact, opens when switching the instantaneous
water heater ON.
10.3.5 Water installation for finished walls
Suitable pressure taps WKMD or WBMD for installation on finished
walls are available as special accessories.
 Fit the water plugs with gaskets to seal the connection
(below the plaster). With Stiebel Eltron pressure taps, plugs
and gaskets are part of the standard delivery. For third party
pressure taps, plugs and gaskets can be ordered as special
accessories.
 Install the tap.
 Push the lower part of the back panel under the connection
pipes of the pressure tap and click it into place in the back
panel.
 Secure the connection pipes to the appliance.
Connecting taps for finished walls
D0000033104
10.3.6 Water installation for finished walls with solder/
compression fitting
With the special accessories "solder fitting" or "compression fit-
ting" (see "Special accessories"), copper or plastic pipes can be
connected in installations on finished walls.
With special accessory "solder fitting", a threaded connection with
on-site 12 mm copper pipes can be used. For this the following
steps are required:
 Push the union nuts over the connection pipes.
 Solder the inserts to the copper pipes.
 Push the lower part of the back panel under the connection
pipes and click it into place in the back panel.
 Secure the connection pipes to the appliance.
Observe the installation instructions of the tapmanu-
facturer.
10.3.7 Water installation for finished walls, fitting the
appliance cap
The following steps are necessary to complete the appliance cap
installation.
 Cleanly break out the knock-out in the appliance cap. If nec-
essary, use a file.
 Click the cap guides provided into place in the knock-outs.
 Secure the back panel at the bottom with a screw. This is
also relevant if flexible water supply systems are used.
Installation information for taps for finished walls
1
2
3
26�02�02�0525
1 Cap guides
2 Knock-out
3 Screw

Installation
Assembly
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10.3.8 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.
26�02�02�1080
21
3
1 Lower part of back panel
2 Connection piece from the pack
3 Screw
10.3.9 Installation in case of appliance replacement
An existing mounting bracket can be used when replacing Stiebel
Eltron appliances (except "DHF"). For this, open a suitable knock-
out in the back panel for the stud of the existing mounting bracket.
If the appliance is being installed in place of a DHF, move the
stud on the mounting bracket as shown in the diagram "Mount-
ing bracket for DHF appliance replacement". The stud cuts its own
groove. Then turn the mounting bracket through 180° to be mount-
ed on the wall. The logo "DHF" is then turned towards the reader.
If replacing a third party appliance, suitable holes for rawl plugs
can be used.
Mounting bracket for DHF appliance replacement
26�02�02�0815
10.3.10Undersink installation with turned appliance cap
The appliance cap can be positioned on the back panel turned
through 180°. This is particularly advantageous for undersink in-
stallation. For this take the following steps:
 Remove the user interface from the appliance cap by undoing
both screws.
 Turn the appliance cap, and secure the user interface again.
 Plug the set value transducer cable into the "set temperature"
PCB; see "Commissioning".
 Hook the appliance cap back into the top and pivot it down
against the back panel. Push the appliance cap onto the back
panel until it audibly clicks home.
 Close the appliance with the screw in the cap.
Appliance cap for undersink installation
electronic
°C
CLICK
electronic
electronic
electronic
electronic
electronic
26�02�02�0855

ENGLISH
Installation
Commissioning
www.stiebel-eltron.com DHB-E electronic | 13
10.3.11Installation for offset tiles
This appliance can be installed where tiles are offset. See diagram
for maximum tile offset and minimum contact area of the appli-
ance. Adjust the wall clearance and lock the back panel with the
fixing toggle by turning it clockwise through 90°.
Installation dimensions for offset tiles
110
20
26�02�02�0849
11. Commissioning
11.1 Initial start-up
Danger to life through electrocution!
Commissioning must only be carried out by an author-
ised contractor in accordance with safety regulations.
Commissioning
26�02�02�0848
 Open and close all connected draw-off valves several times.
Continue until the line network and the appliance are free
of air.
 Activate the safety pressure limiter. The instantaneous water
heater is delivered with the safety pressure limiter triggered.
Activate the safety pressure switch at flow pressure by press-
ing the reset button.
 Push the temperature selector plug into the "set tempera-
ture" PCB.
 Fit the appliance cap and secure with a screw.
 Switch the mains power ON.
 Calibrate the temperature. For this, turn the temperature se-
lector fully clockwise then fully anti-clockwise.
 Check the appliance function.
 Remove the protective foil from the user interface.

Installation
Appliance handover
14 |DHB-E electronic www.stiebel-eltron.com
12. Appliance handover
 Explain the appliance function to the user and familiarise
them with its operation.
 Make the user aware of potential dangers, especially the risk
of scalding.
 Hand over these instructions to the user for safe-keeping.
13. Troubleshooting
Danger to life through electrocution!
To test the appliance, it must be supplied with power.
13.1 Display options LED diagnostic "traffic lights"
Display options
red illuminates in case of faults
yellow illuminates when the equipment is heating water
green flashing: The equipment is supplied with mains power

ENGLISH
Installation
Troubleshooting
www.stiebel-eltron.com DHB-E electronic | 15
13.2 Fault table
Fault / LED diagnostic "traffic light" diplay Cause Remedy
The appliance does not start. The shower head / perlators are scaled-up. Descale or if necessary replace the shower head /
perlators.
Inadequate flow rate. The sieve in the appliance is dirty. Clean the sieve.
Set temperature is not achieved. One phase down. Check the MCB/fuse in your fuse box.
Heating does not switch ON. The air sensor detects the presence of air in the
water and briefly switches the heater OFF.
The appliance restarts after one minute.
No hot water and no "traffic light" display. The MCB/fuse has responded/blown. Check the MCB/fuse in your fuse box.
Safety pressure limiter AP 3 has tripped. Remove the cause of the fault (e.g. faulty pressure
washer).
Protect the system against overheating by opening
a draw-off valve downstream of the appliance for
one minute. This depressurises and cools down the
heating system.
Activate the safety pressure switch at flow pressu-
re by pressing the reset button. See also chapter
"Commissioning".
The PCB is faulty. Check the PCB and replace, if required.
No hot water at flow rate of > 3 l/min.
"Traffic light" display:
Green flashing or constantly ON.
The PCB is faulty. Check the PCB and replace if necessary.
DFE flow sensor is not plugged in. Push the flow sensor plug back on.
DFE flow sensor is faulty. Check the flow sensor and replace if necessary.
No hot water at flow rate of > 3 l/min.
"Traffic light" display:
Yellow constantly ON; green flashing
The high limit safety cut-out has tripped or its lead
is broken.
Check the high limit safety cut-out and replace if
necessary.
The heating system is faulty. Measure the resistance of the heating system and
replace if necessary.
The PCB is faulty. Check the PCB and replace if necessary.
No hot water at flow rate of > 3 l/min.
"Traffic light" display:
Yellow constantly ON; green flashing
The heating system is faulty. Measure the resistance of the heating system and
replace if necessary.
The PCB is faulty. Check the PCB and replace if necessary.

Installation
Specication
16 |DHB-E electronic www.stiebel-eltron.com
14. Specification
14.1 Dimensioned drawing
b02
c01c06
470
100
414
40
11020225
140
35
35
121
368
30
D0000017972
Dimensioned drawing
DHB-E
b02 Cable entry 1
c01 Cold water inlet Male thread G 1/2 A
c06 Hot water outlet Male thread G 1/2 A
14.2 Wiring diagram
3/PE ~ 208 V
85�02�02�0005
1 Heating
2 High limit safety cut-out
3 Safety pressure limiter
14.3 Mixed water volume
See the following table for the mixed water volume. The equation
symbols have the following meanings:
ϕ1= Cold water inlet temperature
ϕ2= Mixed water temperature
ϕ3= Outlet temperature
Available temperature:
- in the shower, for hand washing, filling the bath etc.
(~38°C).
- for the kitchen sink and when using thermostatic valves
(~60°C).
ϕ2 = 38°C (mixed water temperature)
kW 13 16
ϕ¹l/min l/min
6 °C 5.8 7.2
10 °C 6.7 8.2
14 °C 7.8 9.6
ϕ3 = 60°C (outlet temperature)
kW 13 16
ϕ¹l/min l/min
6 °C 3.5 4.3
10 °C 3.7 4.6
14 °C 4.1 5.0
The values in the table are relative to a rated voltage of 208 V. The
outlet volume is subject to the available supply pressure and the
available mains voltage.
14.4 Applications / Conversion table
Specific electrical resistance and specific electrical
conductivity, see “Specification”.
Standard specifica-
tion at 15 °C 20°C 25°C
Spec. Resi-
stance ρ ≥
Spec. Con-
ductivity σ≤
Spec. Re-
sistance ρ ≥
Spec. Con-
ductivity σ≤
Spec. Re-
sistance ρ ≥
Spec. Con-
ductivity σ≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
900 111 1111 800 125 1250 735 136 1361
1000 100 1000 890 112 1124 815 123 1227
1100 91 909 970 103 1031 895 112 1117
1200 83 833 1070 93 935 985 102 1015
1300 77 769 1175 85 851 1072 93 933

ENGLISH
Installation
Specication
www.stiebel-eltron.com DHB-E electronic | 17
14.5 Specification
DHB-E 13-2 DHB-E 16-2
227606 227607
Electrical details
Rated voltage V208 208
Rated output kW 13 16
Rated current A 36.1 44.5
Fuses A40 50
Frequency Hz 50/60 50/60
Phases 3/PE 3/PE
Specific resistance ρ15 ≥ (at ϑcold ≤25 °C) Ω cm 900 900
Specific conductivity σ15 ≤ (at ϑcold ≤25°C) μS/cm 1111 1111
Values
ON l/min >3.0 >3.0
Max. permissible inlet temperature °C 60 60
DHW delivery l/min 6.7 8.2
Δϑif presented K28 28
Flow rate for pressure drop l/min 3.8 4.5
Pressure drop at flow rate MPa 0.11 (0.03 without DMB) 0.06 (0.04 without DMB)
Flow rate limit at l/min 4.0 7.5
Connections
Water connection G 1/2 A G 1/2 A
Application limits
Max. permissible pressure MPa 1 1
Max. inlet temperature for reheating °C 45 45
Hydraulic data
Rated capacity l0.4 0.4
Versions
Temperature adjustment °C 30-60 30-60
Insulation block Plastic Plastic
Heating system Bare wire Bare wire
Cap and back panel Plastic Plastic
Colour white white
Protection class 1 1
IP-Rating IP25 IP25
Dimensions
Height mm 478 478
Width mm 225 225
Depth mm 105 105
Weights
Weight kg 3.6 3.6
14.6 Extreme operating conditions and fault
conditions
Operating temperatures can reach up to 60 °C. In case of faults,
loads up to max. 95 °C at a pressure of 1.2 MPa can occur tempo-
rarily in the installation.

Customer service and warranty
Environment and recycling
18 |DHB-E electronic www.stiebel-eltron.com
CUSTOMER SERVICE AND WARRANTY
ENVIRONMENT AND RECYCLING
Warranty
The warranty conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products, it is increasingly the
case that warranties can only be issued by those subsidiaries.
Such warranties are only granted if the subsidiary has issued
its own terms of warranty. No other warranty will be granted.
We shall not provide any warranty for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not aect warranties issued by any importers.
Environment and recycling
We would ask you to help protect the environment. After use,
dispose of the various materials in accordance with national
regulations.
WARRANTY
RESIDENTIAL & COMMERCIAL WARRANTY: STIEBEL ELTRON WARRANTS TO THE ORIGINAL OWNER THAT THE INSTANTANEOUS
WATER HEATER WILL BE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS FOR A PERIOD OF THREE YEARS FROM THE
DATE OF PURCHASE. SHOULD THE PART(S) PROVE TO BE DEFECTIVE UNDER NORMAL USE DURING THIS PERIOD, STIEBEL ELTRON,
INC. WILL BE RESPONSIBLE FOR REPLACEMENT OF THE DEFECTIVE PART(S) ONLY. STIEBEL ELTRON, INC. IS NOT RESPONSIBLE FOR
LABOR CHARGES TO REMOVE AND/OR REPLACE THE DEFECTIVE PART(S), OR ANY INCIDENTIAL OR CONSEQUENTIAL EXPENSES.
SHOULD THE OWNER WISH TO RETURN THE INSTANTANEOUS WATER HEATER FOR REPAIR, THE OWNER MUST FIRST SECURE
WRITTEN AUTHORIZATION FROM STIEBEL ELTRON, INC. THE OWNER SHALL BE REQUIRED TO SHOW PROOF OF PURCHASE DATE,
AND TO PAY ALL TRANSPORTATION COSTS TO RETURN THE DEFECTIVE PART(S) OR INSTANTANEOUS WATER HEATER FOR REPAIR
OR REPLACEMENT. WARRANTY IS VOID IF WATER HEATER HAS BEEN INSTALLED OR USED IMPROPERLY OR IF DESIGN HAS BEEN
ALTERED IN ANY WAY.
STIEBEL ELTRON, INC.
17 West Street
West Hatfield, MA 01088, USA
PHONE: [phone] or 413-247-3380
FAX: [phone]
E-Mail [e-mail]
www.stiebel-eltron-usa.com

ENGLISH
Notes
www.stiebel-eltron.com DHB-E electronic | 19

20 |DHB-E electronic www.stiebel-eltron.com
Operación
Indicaciones generales
1. Indicaciones generales
El capítulo operación está dirigido al usuario y al técnico insta-
lador.
El capítulo instalación está dirigido al instalador.
Lea esta información.
Lea atentamente estas instrucciones antes del uso y
archívelas en un lugar seguro. Si entrega el aparato a
terceras personas, no olvide incluir este manual.
1.1 Explicación de símbolos
En esta documentación se incluyen símbolos e indicaciones. Estas
presentan el siguiente significado:
1.1.1 Símbolos en esta documentación
Peligro de lesiones.
Indicaciones sobre los posibles peligros de lesiones para
el instalador o el usuario y a posibles daños del aparato
Peligro de muerte por electrocución.
¡Peligro de quemaduras!
!
Peligro de daños.
Indicación en relación a una posible situación de peligro
que puede producirse durante la instalación del aparato
o durante el uso y puede ocasionar daños en el aparato,
al medio ambiente o daños económicos.
Lea esta información.
Lea atentamente este apartado.
 En los pasajes que presentan este símbolo "»" se indican las
actuaciones necesarias descritas paso a paso.
- Los pasajes que presentan este símbolo "–" indican
enumeraciones.
1.1.2 Símbolos en el aparato
Eliminación. Los aparatos que presentan este distintivo, como las
pilas y baterías, no deben ser eliminados junto con la
basura común, sino que deben ser eliminados por se-
parado.
OPERACIÓN �������������������������������������������������������� 20
1. Indicaciones generales ����������������������������������� 20
1.1 Explicación de símbolos��������������������������������������� 20
2. Seguridad ��������������������������������������������������� 21
2.1 Utilización según lo previsto ��������������������������������� 21
2.2 Indicaciones de seguridad ������������������������������������ 21
2.3 Certificado CE���������������������������������������������������� 21
3. Descripción de los componentes ������������������������� 21
4. Operación �������������������������������������������������� 21
4.1 Botón de regulación de temperatura����������������������� 21
4.2 Caudales de salida ��������������������������������������������� 21
4.3 Valvulería del termostato ������������������������������������� 21
5. Limpieza, conservación y mantenimiento ��������������� 21
6. Localización de fallos (guía)... ���������������������������� 22
6.1 ... durante la interrupción del suministro de agua ������ 22
6.2 ... Si surgen averías en el aparato �������������������������� 22
INSTALACIÓN ������������������������������������������������������ 22
7. Seguridad ��������������������������������������������������� 23
7.1 Indicaciones generales de seguridad����������������������� 23
7.2 Directivas, normas y disposiciones��������������������������23
7.3 Instalación de agua �������������������������������������������� 23
7.4 Peligro de congelación ���������������������������������������� 23
8. Descripción de los componentes ������������������������� 23
8.1 Volumen de suministro���������������������������������������� 23
8.2 Montaje����������������������������������������������������������� 24
8.3 Variantes de montaje ������������������������������������������ 24
8.4 Accesorios especiales������������������������������������������ 24
9. Instalación �������������������������������������������������� 24
9.1 Instrucciones de Instalación ����������������������������� 24
10. Montaje ����������������������������������������������������� 25
10.1 Lugar de montaje����������������������������������������������� 25
10.2 Montaje����������������������������������������������������������� 25
10.3 Variantes de montaje ������������������������������������������ 27
11. Puesta en marcha ������������������������������������������ 30
11.1 Primera puesta en marcha ����������������������������������� 30
12. Entrega del equipo a terceras personas����������������� 31
13. Reparación de averías ������������������������������������� 31
13.1 Posibilidades de indicación de los LED de diagnóstico�� 31
13.2 Tabla de averías������������������������������������������������� 32
14. Datos técnicos ���������������������������������������������� 33
14.1 Plano dimensional���������������������������������������������� 33
14.2 Esquema de conexiones eléctricas�������������������������� 33
14.3 Caudal del agua de mezcla ����������������������������������� 33
14.4 Campo de aplicación / Tabla de conversión ��������������� 33
14.5 Condiciones de funcionamiento extremas y
condiciones en caso de avería �������������������������������34
14.6 Datos técnicos ���������������������������������������������������34
SERVICIO DE ATENCIÓN AL CLIENTE Y GARANTÍA �������������� 35
MEDIO AMBIENTE Y RECICLAJE ���������������������������������� 35
OPERACIÓN