STIEBEL ELTRON DHF 13 C User manual

BEDIENUNG UND INSTALLATION
OPERATING AND INSTALLATION
UTILISATION ET INSTALLATION
GEBRUIK EN INSTALLATIE
OPERACIÓN E INSTALACIÓN
OBSLUHA A INSTALACE
OBSŁUGA I INSTALACJA
ОБСЛУЖВАНЕ И ИНСТАЛИРАНЕ
ЭКСПЛУАТАЦИЯ И МОНТАЖ

Hydraulisch gesteuerter Durchlauferhitzer | Hydraulically controlled instantaneous
water heater | Chauffe-eau instantané à commande hydraulique | Hydraulisch
gestuurde doorstromer | Calentador instantáneo controlado hidráulicamente |
Hydraulicky řízené průtokové ohřívače | Hydraulicznie sterowany przepływowy
ogrzewacz wody | Хидра влично контролиран проточен бойлер | Проточный водонагреватель
с гидравлическим управлением |

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18 |DHF-C www.stiebel-eltron.com
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�������������������������������������������������������� 20
2.1 Intended use�����������������������������������������������������20
2.2 General safety instructions ����������������������������������� 20
2.3 Test symbols ����������������������������������������������������� 20
3. Appliance description ������������������������������������� 20
4. Settings ����������������������������������������������������� 20
4.1 Recommended tap/valve settings ���������������������������20
5. Cleaning, care and maintenance ������������������������� 21
6. Troubleshooting �������������������������������������������� 21
INSTALLATION
7. Safety�������������������������������������������������������� 22
7.1 General safety instructions ����������������������������������� 22
7.2 Instructions, standards and regulations ������������������� 22
8. Appliance description ������������������������������������� 22
8.1 Standard delivery����������������������������������������������� 22
8.2 Accessories������������������������������������������������������� 22
9. Preparations������������������������������������������������ 22
9.1 Installation site�������������������������������������������������� 22
9.2 Minimum clearances������������������������������������������� 22
9.3 Water installation����������������������������������������������� 22
10. Installation�������������������������������������������������� 23
10.1 Standard installation������������������������������������������� 23
10.2 Installation options��������������������������������������������� 25
10.3 Completing the installation����������������������������������� 26
11. Commissioning ��������������������������������������������� 26
11.1 Initial start-up��������������������������������������������������� 26
11.2 Recommissioning����������������������������������������������� 26
12. Shutdown ��������������������������������������������������� 26
13. Troubleshooting �������������������������������������������� 27
14. Maintenance ������������������������������������������������ 27
15. Specification ������������������������������������������������ 28
15.1 Dimensions and connections��������������������������������� 28
15.2 Wiring diagram ������������������������������������������������� 28
15.3 DHW output������������������������������������������������������ 29
15.4 Pressure drop ��������������������������������������������������� 29
15.5 Details on energy consumption������������������������������ 30
15.6 Data table ��������������������������������������������������������30
CUSTOMER SUPPORT AND GUARANTEE
INSTALLATION TEMPLATE (IN THE CENTRE SECTION OF THESE
INSTRUCTIONS)
SPECIAL INFORMATION
- The appliance may be used by children aged 3
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.
- The tap can reach temperatures in excess of
60°C. There is a risk of scalding at outlet temper-
atures in excess of 43°C.
- Ensure the appliance can be separated from the
power supply by an isolator that disconnects all
poles with at least 3 mm contact separation.
- The specified voltage must match the mains
voltage.
- Connect the appliance to earth.
- Connect the appliance permanently to fixed
wiring.
- 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 chapter "In-
stallation/ 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 the user 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 symbol shown
on the left.
 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 mm unless stated oth-
erwise.
!
!

OPERATION
Safety
20 |DHF-C www.stiebel-eltron.com
2. Safety
2.1 Intended use
This appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-do-
mestic 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 in ex-
cess of 60°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3 and up and
persons with reduced physical, sensory or mental capa-
bilities 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 resulting risks. Children must never play with the
appliance. Children must never clean the appliance or
perform user maintenance unless they are supervised.
!Material losses
Protect the appliance and its tap against frost.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The hydraulically controlled instantaneous water heater heats
water as it flows through the appliance. When a tap is opened,
the appliance starts heating automatically at the selected output as
soon as the start-up volume is exceeded (see chapter "Installation/
Specification/ Data table"). You can adjust the hot water volume
and temperature at the tap by mixing in cold water.
You can choose between 2 output stages. In addition, 2 output
stages are hydraulically controlled in relation to the flow rate.
The flow meter compensates for pressure fluctuations. The flow
meter ensures largely stable temperatures. The control unit limits
the flow rate, thereby ensuring an adequate increase in the DHW
temperature at all times.
Heating system
The tubular heater heating system has a pressure-tested copper
cylinder. The heating system is suitable for soft water areas (for
application range, see chapter "Installation/ Specification/ Data
table").
4. Settings
D0000042703
1 2
1 Partial load:
This setting is suitable for hand washing at a basin, for ex-
ample. At low flow rates, the appliance starts heating at half
the selected output.
2 Full load:
This setting is suitable for baths, showers and washing up,
for example. At low flow rates, the appliance starts heating
at half the selected output and at higher flow rates, the full
selected output.
 Click the output selector into the required position.
For start volumes, see chapter "Specification/ Data table/ On".
Recommended settings when using a thermostatic valve
 Set the output selector to full power.
4.1 Recommended tap/valve settings
Note If the outlet temperature is not high enough when the
draw-off valve is fully open at full power, then more water
is flowing through the appliance than can be heated by
the heating system (appliance is at its output limit).
 Reduce the water volume at the draw-off valve.
Low draw-off rate = high outlet temperature
High draw-off rate = low outlet temperature
Twin lever tap
Output stage Application range
Partial load Washbasin
Full load Bath, shower, sink
 If the temperature is too high, mix in some cold water.
Mono lever mixer
Output stage Application range
Full load All
 Turn the tap lever to the highest temperature.
 Fully open the tap.
 Increase the outlet temperature by closing the tap slowly.
 Reduce the outlet temperature by adding cold water or open-
ing the tap further, if possible.

OPERATION
Cleaning, care and maintenance
ENGLISH
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Following an interruption of the water supply
!Material losses
Following an interruption of the water supply, the
appliance must be recommissioned by carrying out 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 mains power back ON again.
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 spouts
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 panel.
The flow rate is too low
for the appliance to start
heating at the selected
output. The aerator in
the tap or the shower
head is scaled up or con-
taminated.
Clean and/or descale the
aerator or shower head.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-00000):
Nr.: 000000-0000-00000
D0000042704

22 |DHF-C www.stiebel-eltron.com
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 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.
7.2 Instructions, standards and regulations
Note Observe all applicable national and regional regulations
and instructions.
Protection rating IP 24 (splashproof) can only be guaranteed with
a correctly fitted cable grommet.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- Wall mounting bracket
- Installation template
- 2 twin connectors
- Cross-piece
- Tee
- Flat gaskets
- Strainer
- Plastic profile washer
- 2 cover guides (for installation on finished walls)
8.2 Accessories
Taps/valves
- MEKD - kitchen pressure tap
- MEBD - bath pressure tap
Plug G½A
The plugs are required if you use any taps other than the pressure
taps for finished walls recommended in the accessories.
Installation set for finished walls
- Solder fitting - copper pipe for solder connection Ø12mm
- Compression fitting - copper pipe
- Compression fitting - plastic pipe (suitable for Viega: San-
fix-Plus or Sanfix-Fosta)
Universal mounting frame
Mounting frame with electrical connections.
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 simultane-
ously being operated.
9. Preparations
9.1 Installation site
!Material losses
Install the appliance in a room 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 installations.
Note  Mount the appliance on the wall. The wall must have
a sufficient load-bearing capacity.
9.2 Minimum clearances
≥50≥50
≥90
≥90
D0000060809
 Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
9.3 Water installation
Never operate with preheated water.
 Flush the water line thoroughly.
 Ensure that the flow rate for switching on the appliance is
achieved (see chapter "Installation/ Specification/ Data
table", On). Increase the mains water pressure if the re-
quired flow rate is not achieved with the draw-off valve fully
opened.

ENGLISH
www.stiebel-eltron.com DHF-C | 23
INSTALLATION
Installation
Taps/valves
Use appropriate pressure taps. Open taps are not permitted.
Thermostatic pressure valves must be suitable for hydraulically
controlled instantaneous water heaters.
Note Never use the shut-off valve in the cold water inlet to
reduce the flow rate. It is intended for shutting off the
appliance.
Permissible water pipe materials
- Cold water inlet pipe:
Galvanised steel pipe, stainless steel pipe, copper pipe or
plastic pipe
!Material losses
If you use plastic pipework in the cold water inlet line,
you must observe the following condition:
 Install a metal pipe approx. 1 m in length at the ap-
pliance cold water connection. Then you can install
the plastic pipework.
- DHW outlet pipe:
Stainless steel pipe or copper pipe
!Material losses
The instantaneous water heater is unsuitable for installa-
tion with plastic pipework in the DHW outlet line.
Flexible water connection lines
 Secure the back panel with an additional screw at the
bottom.
Undersink installation
D0000042705
1
2
1 Cold water Inlet
2 DHW outlet
Oversink installation
D0000042706
12
1 Cold water Inlet
2 DHW outlet
10. Installation
10.1 Standard installation
- Electrical connection from below on unfinished walls
- Water connection on unfinished walls
For further installation options, see chapter "Installation/ Instal-
lation/ Installation alternatives":
- Power cable for finished walls
- Connecting a load shedding relay
- Water installation on finished walls
Opening the appliance
compact contr ol
compact contr
26�02�02�0396
 Turn the cap anticlockwise. Remove by pulling it forward.
 Undo the screw.
 Pivot open the appliance cover.
Preparing the power cable
160
≥ 30
26�02�02�0887

24 |DHF-C www.stiebel-eltron.com
INSTALLATION
Installation
Fitting wall mounting bracket and appliance
26�02�02�0398
3
2
1
1 Wall mounting bracket
2 Threaded stud
3 Threaded bush
 Remove the wall mounting bracket.
 Mark out the drill holes with the installation template (in the
centre section of these instructions). If the appliance is to be
installed with water connections on finished walls, also mark
out a fixing hole in the lower part of the template.
 Drill the holes and secure the wall mounting bracket with
2screws and 2rawl plugs. The screws and rawl plugs are
not part of the standard delivery.
 Mount the wall mounting bracket.
 Mount the appliance on the threaded stud.
 Push the back panel firmly against the wall. Secure the back
panel using the threaded bush. You can compensate for a tile
offset with the nut on the threaded stud.
Installation with offset tiles
≤12
≤100
2
1
D0000042707
1 Minimum contact area of the appliance
2 Maximum tile offset
 Adjust the wall clearance with the nut on the threaded stud.
Push the back panel firmly against the wall. Secure the back
panel using the threaded stud.
Making the water connection
!Material losses
Carry out all water connection and installation work in
accordance with regulations.
12
D0000053319
 Seal and insert the twin connectors.
26�02�02�0799
2
3
1
3
1 Cold water with 3-way ball shut-off valve
2 DHW with tee
3 Gasket
 Fit the water connections.
1
D0000042708
2
1 Strainer
2 Plastic profile washer
 Fit the supplied strainer in the 3-way ball shut-off valve.
!Material losses
The strainer must be fitted for the appliance to function.
 When replacing an appliance, check whether the
strainer is installed (see chapter "Installation/ Main-
tenance").

ENGLISH
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INSTALLATION
Installation
Fitting the cable grommet
1
D0000042709
1 Cable grommet
 Fit the cable grommet.
24
19
3 Nm
5 Nm
D0000056244
 Remove the transport protection plugs from the appliance
connections.
 Fit the appliance pipes with flat gaskets onto the twin
connectors.
Making the electrical connection
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
cable grommet. Ensure the appliance can 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.
!Material losses
Observe the type plate. The specified voltage must match
the mains voltage.
 Connect the power cable to the mains terminal (see chapter
"Installation/ Specification/ Wiring diagram").
10.2 Installation options
10.2.1 Power cable for finished walls
!Material losses
If you break open the wrong knock-out in the appliance
cover by mistake, you must use a new appliance cover.
 Cleanly cut or break out the required opening in the appli-
ance cover (see chapter "Installation/ Specification/ Dimen-
sions and connections"). If necessary, use a file.
 Route the power cable through the cable grommet. Connect
the power cable to the mains terminal.
10.2.2 Connecting a load shedding relay
Install a 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.
!Material losses
Connect the phase that switches the load shedding relay
to the indicated terminal of the mains terminal in the ap-
pliance (see chapter "Installation/ Specification/ Wiring
diagram").
10.2.3 Water installation on finished walls
19
24
5 Nm
18 Nm
D0000033104
 To seal the connection on unfinished walls, fit the water
plugs with gaskets.
 Fit a suitable pressure tap.
D0000042740
3
2
1
1 Openings
2 Cover guides
3 Lower fixing screw

26 |DHF-C www.stiebel-eltron.com
INSTALLATION
Commissioning
!Material losses
If you cut open the wrong knock-out in the appliance
cover by mistake, you must use a new appliance cover.
 Secure the back panel with an additional screw at the
bottom.
 Secure the connection pipes to the appliance.
 Cleanly break out the knock-outs in the appliance cover. If
necessary, use a file.
 Click the cover guides into place in the openings.
10.3 Completing the installation
 Open the shut-off valve in the tee.
11. Commissioning
WARNING Electrocution Commissioning may only be carried out by a qualified
contractor in accordance with safety regulations.
11.1 Initial start-up
compact contr ol
compact contr ol
26�02�02�0452
 Open and close all connected draw-off valves several times,
until all air has been vented from the pipework and the
appliance.
 Carry out a tightness check.
 Fit the appliance cover. Check that the appliance cover is
seated correctly.
 Secure the appliance cover with a screw.
 Insert the cap. Turn it clockwise as far as it will go.
 Latch the output selector into place. To do this, turn it fully
anti-clockwise and clockwise.
 Switch the mains power ON.
 Check the function of the appliance.
 Remove the protective foil from the control fascia.
Appliance handover
 Explain the functions of the appliance to the user. Show the
user how to operate the appliance.
 Make users aware of potential dangers, especially the risk of
scalding.
 Hand over these instructions.
11.2 Recommissioning
Vent the appliance and the cold water inlet line (see chapter "In-
stallation/ Settings").
See chapter "Installation/ Commissioning".
12. Shutdown
 Isolate all poles of the appliance from the power supply.
 Drain the appliance (see chapter "Installation/
Maintenance").