STIEBEL ELTRON DHB 24 si Instructions for Use and Installation

Type
Instructions for Use and Installation

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2
Tabla de materias
Español Castellano Páginas 26 - 30
1. Instrucciones de uso . . . . . . . . . . . . . . . . 26
Descripción del aparato . . . . . . . . . . . . . . . . . . 26
Lo más importante en pocas palabras . . . . . . 26
Manejo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Guía rápida para resolver problemas . . . . . . . 26
Ajustes recomendados . . . . . . . . . . . . . . . . . . . 26
Observaciones importantes . . . . . . . . . . . . . . . 26
2. Instrucciones de montaje . . . . . . . . .27 - 29
Construcción del aparato . . . . . . . . . . . . . . . . . 27
Accesorios especiales . . . . . . . . . . . . . . . . . . . . 27
Observaciones importantes . . . . . . . . . . . . . . . 27
Descripción abreviada . . . . . . . . . . . . . . . . . . . . 27
Normas y reglamentos . . . . . . . . . . . . . . . . . . . 27
Datos técnicos . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Emplazamiento de montaje . . . . . . . . . . . . . . . 28
Conexión hidráulica . . . . . . . . . . . . . . . . . . . . . . 28
Conexión eléctrica . . . . . . . . . . . . . . . . . . . . . . . 28
Primera puesta en marcha . . . . . . . . . . . . . . . . 29
Accesorios especiales . . . . . . . . . . . . . . . . . . . . 29
3. Garantía . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4. Medio ambiente y reciclado . . . . . . . . . . 29
5. Indicaciones para el servicio técnico -
Instalador . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6. Resolución de incidencias - usuario . . . . 30
7. Resolución de incidencias - instalador . . 30
Inhoudsoverzicht
Nederlands pagina . 21 - 25
1. Gebruiksaanwijzing . . . . . . . . . . . . . . . . . 21
Beschrijving van het toestel . . . . . . . . . . . . . . . 21
Het belangrijkste in het kort . . . . . . . . . . . . . . . 21
Bediening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Eerste hulp bij storingen . . . . . . . . . . . . . . . . . . 21
Aanbevolen instellingen . . . . . . . . . . . . . . . . . . 21
Belangrijke aanwijzingen . . . . . . . . . . . . . . . . . . 21
2. Montagehandleiding . . . . . . . . . . . . . .22 - 24
Opbouw van het toestel . . . . . . . . . . . . . . . . . . 22
Speciale armaturen . . . . . . . . . . . . . . . . . . . . . . 22
Belangrijke aanwijzingen . . . . . . . . . . . . . . . . . . 22
Beknopte beschrijving . . . . . . . . . . . . . . . . . . . . 22
Voorschriften en bepalingen . . . . . . . . . . . . . . 22
Technische gegevens . . . . . . . . . . . . . . . . . . . . . 23
Plaats van montage . . . . . . . . . . . . . . . . . . . . . . 23
Wateraansluiting . . . . . . . . . . . . . . . . . . . . . . . . . 23
Elektrische aansluiting . . . . . . . . . . . . . . . . . . . . 23
Eerste ingebruikneming . . . . . . . . . . . . . . . . . . . 24
Extra toebehoren . . . . . . . . . . . . . . . . . . . . . . . . 24
3. Garantie . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4. Milieu en recycling . . . . . . . . . . . . . . . . . . 24
5. Serviceaanwijzingen voor de installateur 24
6. Het opheffen van storingen door
de gebruiker . . . . . . . . . . . . . . . . . . . . . . . . . 25
7. Het opheffen van storingen door
de installateur . . . . . . . . . . . . . . . . . . . . . . . . 25

  
 
 
 
  
!" 
#  
$  
%&  '()
*  '
+&,  '
,, '
+#-  '
&,,  '
."/  0
1&  0
,  0
2  0
344  )
3#&,  )
56,  )
7+,,89  )
 $"8  5:
' $"89  5:
Table des matières
Français page . . . . . 16 - 20
1. Instructions d’utilisation . . . . . . . . . . . . . 16
Description de l’appareil . . . . . . . . . . . . . . . . . 16
Sommaire des informations essentielles . . . . 16
Fonctionnement . . . . . . . . . . . . . . . . . . . . . . . . 16
Conseils en cas de dysfonctionnements . . . 16
Conseils de réglage . . . . . . . . . . . . . . . . . . . . . 16
Observations importantes . . . . . . . . . . . . . . . 16
2. Instructions de montage . . . . . . . . . 17 - 19
Composition de l’appareil . . . . . . . . . . . . . . . . 17
Robinetteries spécifiques . . . . . . . . . . . . . . . . 17
Observations importantes . . . . . . . . . . . . . . . 17
Description, caractéristiques techniques . . . 17
Normes et spécifications . . . . . . . . . . . . . . . . 17
Informations techniques . . . . . . . . . . . . . . . . . 18
Emplacement de montage . . . . . . . . . . . . . . . 18
Raccordement hydraulique . . . . . . . . . . . . . . 18
Raccordement électrique . . . . . . . . . . . . . . . . 18
Première mise en service . . . . . . . . . . . . . . . . 18
Accessoires spécifiques . . . . . . . . . . . . . . . . . . 18
3. Garantie . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4. Environnement et recyclage . . . . . . . . . . . 19
5. Instructions de service, installateur
professionnel . . . . . . . . . . . . . . . . . . . . . . . . . 19
6. Dépannage, par l’utilisateur . . . . . . . . . . . . 20
7. Dépannage, par l’installateur professionnel 20

  
;9<= 
*>? 
+>@A,"B&  
9<= 
@&@,@ 
3@  
CA@>@ 
%;&A  %(5
D@?  %
+&  %
CA@>@  %
+>@A,"B&  %
,&,  %
"  
1&A 
,<?@,  
,<?, 
@"&  5
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Inhaltsverzeichnis
Deutsch Seite . . . . . . 6 - 10
1. Gebrauchsanweisung . . . . . . . . . . . . . . . . . 6
Gerätebeschreibung . . . . . . . . . . . . . . . . . . . . . . 6
Das Wichtigste in Kürze . . . . . . . . . . . . . . . . . . . 6
Bedienung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Erste Hilfe bei Störungen . . . . . . . . . . . . . . . . . . 6
Einstellungsempfehlung . . . . . . . . . . . . . . . . . . . . 6
Wichtige Hinweise . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Montageanweisung . . . . . . . . . . . . . . . . .7 - 9
Geräteaufbau . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Spezialarmaturen . . . . . . . . . . . . . . . . . . . . . . . . . 7
Wichtige Hinweise . . . . . . . . . . . . . . . . . . . . . . . . 7
Kurzbeschreibung . . . . . . . . . . . . . . . . . . . . . . . . . 7
Vorschriften und Bestimmungen . . . . . . . . . . . . 7
Technische Daten . . . . . . . . . . . . . . . . . . . . . . . . . 8
Montageort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Wasseranschluß . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Elektroanschluß . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Erstinbetriebnahme . . . . . . . . . . . . . . . . . . . . . . . 9
Sonderzubehör . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. Garantie . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Umwelt und Recycling . . . . . . . . . . . . . . . . 9
5. Servicehinweise - Fachmann . . . . . . . . . . . 9
6. Störungsbeseitigung - Benutzer . . . . . . . 10
7. Störungsbeseitigung - Fachmann . . . . . . . 10
Contents
English page . . . . . . 11 - 15
1. Operating instructions . . . . . . . . . . . . . . 11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Important information - in brief . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Trouble-shooting in the event of problems 11
Recommended settings . . . . . . . . . . . . . . . . . . 11
Important information . . . . . . . . . . . . . . . . . . . 11
2. Installation instructions . . . . . . . . . . . 12- 14
Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Special fittings . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Important instructions . . . . . . . . . . . . . . . . . . . 12
Short description . . . . . . . . . . . . . . . . . . . . . . . 12
Regulations and specifications . . . . . . . . . . . . 12
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Place of installation . . . . . . . . . . . . . . . . . . . . . 13
Water connection . . . . . . . . . . . . . . . . . . . . . . 13
Electrical connection . . . . . . . . . . . . . . . . . . . . 13
Initial operation . . . . . . . . . . . . . . . . . . . . . . . . . 14
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3. Guarantee . . . . . . . . . . . . . . . . . . . . . . . . 14
4. Environment and recycling . . . . . . . . . . . 14
5. Servicing instructions - qualified installer 14
6. Fault-finding - user . . . . . . . . . . . . . . . . . . 15
7. Fault-finding - qualified installer . . . . . . . 15
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11
DeutschEnglish
1. Operating instructions for the user and the qualified installer
Description
The DHB hydraulically-controlled
instantaneous water heater heats the water
when the required volume of water flows
through the device.
Important information - in
brief
Power selector switch
To change the heating output to the
required level.
Shower comfort switch
For even more comfort when
showering.
Operation
Power selector switch
●●● Full output
Automatic output modulation in 2 stages,
depending on the water volume, greatest
temperature increase,
1
/
2
or full load.
●● Energy saving
Automatic output modulation in 2 stages,
energy saving with
1
/
3
or
2
/
3
heating load
(summer operation).
Half load
Fine adjustment to max.
1
/
2
heating load,
full heating capacity blocked (constant low
water requirement).
Shower comfort switch
Variable setting
Fine adjustment of water volume and
temperature when showering, with hot
water tap fully opened.
Latching position
For high temperatures, or with low
pressure in the hot water system.
Trouble-shooting in the
event of problems
Set the output selector switch to the
basic setting ●●●.
Set the shower comfort switch to the
basic position
.
Check fuses.
Check the fittings and shower head for
lime scale or dirt.
See page 15 for more fault-finding
information.
Recommended settings
for supplying bathroom and
kitchen:
Power selector switch:
Position ●●●
Shower comfort switch:
Latching position
.
The desired temperature is adjusted at
the fitting.
For suppling bathroom only:
Power selector switch:
Filling bath, position ●●●.
Showering in summer, position ●●.
Shower comfort switch:
Hot water valve fully open.
With sufficient pressure in the water
system, adjust the shower temperature
with the shower comfort switch
.
Operation with two-handle fitting/
mono-bloc mixer
The DHB automatically controls the
individual heat output depending on the
water flow rate (Stages and ) through the
device. To do this, a minimum volume is
required for actuation (see “Technical
Data”).
Sink:
Open the hot water tap of the two-
handle fitting or set the mono-bloc mixer
to the Hot setting. With a low flow
volume, the device will switch on heating
stage . By reducing the flow at the hot
water tap, the output temperature can
be increased, and reduced by opening
the tap further.
Shower/bath/basin:
With the hot water tap fully open/mono-
bloc mixer at the hot setting, the device
will operate automatically in Stage . The
output temperature and hot water
volume can be changed by means of the
shower comfort switch
or by mixing
in cold water at the fitting.
Operation with thermostatic fitting:
Shower comfort switch:
Always in the latching position
Power selector switch:
Position ●●● or ●●
Take note of the instructions provided by the
manufacturer of the fitting.
The desired temperature at other tap
points is adjusted at the fitting.
With low pressure in the water system,
the shower comfort switch is to be set to
the latching position
.
The pressure loss in the downstream
fitting and in the hand-held shower in
particular, influences the temperature
selection possibility at the shower comfort
switch. Use hand-held showers with low
pressure loss (see page 14 for Relexa
hand-held shower).
Energy saving tip
The position ●● saves energy and
water when showering, especially
in Summer. For filling the bath, the
power stage ●●● is
recommended (shorter filling time).
Table 1
Maintenance
Maintenance work may only be
carried out by a qualified installer. An
overview of faults which you can rectify
yourself is provided on page 15.
Care
A damp cloth is all that is needed to care for
the housing. Do not use any abrasive or
aggressive cleaning agents.
Instructions for use and installation
Keep these instructions in a safe
place, and give them to the new
owner if you move house; if maintenance
or repair work is required, let the qualified
installer have them for reference.
Important information
When selecting the temperature at
the draw-off fitting, water
temperatures of over 60 °C may be
reached. For this reason, children should
be kept away from the fitting, due to the
risk of scalding.
Air in the cold water pipe will destroy the
bare-wire heating system of the DHB. If
the water supply to the DHB has been
interrupted, for example due to the risk of
frost or work on the water pipe, the
following steps must be carried out before
the system is used again:
1. Disconnect the supply or disconnect the
fuses.
2. Open a hot water tap downstream of
the device for as long as is necessary for
the device and the cold water pipe to be
freed of air.
3. Reconnect the supply or connect the
fuses again.
Hot water output
Depending on the time of year, a variety of
cold water supply temperatures can be
obtained which in turn give the following
maximum flow volumes or mixed water
volumes (see table 1).
1
= Cold water inlet temperature
2
= Mixing water temperature.
3
= Outlet temperature.
Useful temperatures:
Approx. 38 °C: E.g. for shower, hand was-
hing, bath filling, etc.
– Approx. 60 °C: For kitchen washing and
when using thermostat fittings (shower
comfort switch in latching position
).
2
= 38 °C (Mixing water temperature)
kW 11,1 18 21 24 27
1
l/min
6 °C 4,9 8,0 9,4 10,7 12,1
10 °C 5,7 9,2 10,7 12,3 13,8
14 °C 6,6 10,7 12,5 14,3 16,1
3
= 60 °C (Outlet temperature)
kW 11,1 18 21 24 27
1
l/min
6 °C 2,9 4,8 5,6 6,4 7,2
10 °C 3,1 5,2 6,0 6,9 7,7
14 °C 3,5 5,6 6,5 7,5 8,4
12
Thermostat fitting:
See page 11 for instructions.
Important information
Air in the cold water pipe will
destroy the bare-wire heating system
of the DHB. If the water supply to the
DHB has been interrupted, for example
due to the risk of frost or work on the
water pipe, the following steps must be
carried out before the system is used again:
1. Disconnect supply or disconnect the
fuses.
2. Open a hot water tap downstream of
the device for as long as is necessary
for the device and the cold water pipe
to be freed of air.
3. Reconnect the supply or connect the
fuses again.
The device is suitable for hot water
production (potable supply), and is to
be installed in enclosed, frost-free
rooms, as close as possible to the
outlet point (uninstalled devices are to
be stored in a frost-free place, because
there will always be residual water left
in the unit).
All information in these Instructions for
Use and Installation must be followed
carefully. They provide important
information with regard to safety,
operation, installation, and maintenance
of the device.
Short description
The Stiebel Eltron DHB instantaneous water
heater is a hydraulically-controlled pressure
device for heating cold water in accordance
with DIN 1988, with which one or more
outlet points can be supplied.
The flow regulator (MRS), which can be
adjusted by means of the shower comfort
switch:
– keeps the flow volume constant in the
event of pressure fluctuations in the
water mains, and therefore keeps the
output temperature constant;
– limits the flow volume (latching position)
and therefore guarantees, even in winter,
an adequate temperature increase.
The integrated installation pressure switch
(15) allows for installation with DVGW-
tested plastic pipes. In the event of a fault,
the integrated installation pressure switch
with the downstream plastic pipe installation
will be loaded with a pressure of 12 bar.
The bare-wire heating system is enclosed
within a pressure-resistant copper sheathing.
The heating system is especially suitable for
hard water, i.e. containing lime (for areas of
operation see Table 2).
2. Installation instructions for the qualified installer
Structure
1 Power selector switch
2 Shower comfort switch
3 Cover cap (cover securing screw)
3aShort operating instructions (inside)
4 Cover
5 Lower part of the back plate
6 Hot water connection
7 Cold water connection (3-way cut-off)
8 Fastening screw assembly support
(service)
9 Upper part of the back plate
10 Terminal block
11 Safety pressure limiter (AD 3)
11a Reset button for safety pressure limiter
(in the event of a fault)
12 Differential pressure switch/flow
regulator MRS
13 Heating system
14 Fastening screw
15 System pressure switch
16 Toothed bar
17 Setting lever
18 Lower part of device fixing assembly
19 Electricity supply concealed in lower
area of device
20 Electricity supply concealed in upper
area of device
21 Device fixing point for replacement
against DHA
22 Device fixing point on top in new
installation
23 Dimension for installation, “wall flush
fitting”
24 Fixing holes for replacing third-party
products
25 Knurled nut for rear wall alignment in
the event of tiles being uneven
26 Knock-out point for fitting bracket
provided with DHB 12-27 Si and for
installed DHB and DHF fitting bracket in
the event of replacement
27 Knock-out point for installed fitting
bracket of Stiebel Eltron DHE
28 Engagement hooks for lower part of
rear wall
29 Connection line
30-32 Connection of priority circuit
33 Blanking plugs
34 Cable grommet
Special fittings
(Special instructions for mono-bloc mixers
and thermostat fittings)
Mono-bloc mixers and thermostat fittings
must be suitable for hydraulically-controlled
instantaneous water heaters (take note of
the manufacturer’s instructions).
Shower heads with low pressure losses are
to be provided for.
Mono-bloc mixers:
– The flow pressure when operating with
mono-bloc mixers, for example with
DHB 21, should be at least 3 bar.
With low flow pressure:
– Power selector switch at position ●●
– Shower comfort switch in latching position
(greatest temperature increase). The
flow pressure is considered sufficient when
a water temperature of less than 35 °C can
be set at the fitting without any problems.
Regulations and
specifications
– The installation (water and electrical
installation) and the first-time operation
and maintenance of this device may only
be carried out by a qualified installer, in
accordance with these instructions.
– Regulations of the local energy supply
company
– Specifications of the water supply company
concerned
– Fit the device with the lower section flush
with the wall (respect dimension
110 mm (23)). Also secure the device at
the bottom (18).
Other points to be noted:
– The device rating plate
– Technical data:
The specific electrical resistance of the
water must not be less than that indicated
on the device rating plate. With a water
mains network, the lowest electrical
resistance of the water is to be taken into
account (see table 2). You can find out the
specific electrical resistance or electrical
conductivity of the water from the water
supply company.
Operation with pre-heated water of more
than 25 °C is not permitted.
– Accompanying pipe heating (trace heating)
is not permitted.
– Material of the water installation:
Cold water pipe:
Steel, copper, or plastic pipes
– Operating conditions in accordance with
DIN 1988, Part 2, December 1988, Section
2.2.3, Table 1.
Hot water pipe:
Copper
Plastic piping systems:
The integrated installation pressure switch
allows for installation with DVGW-tested
plastic pipes. To determine the suitability of
plastic piping systems in conjunction with
the DHB, the following instructions are to
be adhered to:
The operating conditions apply as per
DIN 1988, Part 2, December 1988, Section
2.2.3, Table 1.
Respect the instructions provided by the
plastic pipe manufacturer.
– Electrical connection only to a permanent
connection.
– Fittings:
Fittings for open devices are not permitted.
– Safety fittings:
A safety valve is not required.
The device must be connected to the
protective earth conductor (see
).
– The device must be capable of being
isolated from the mains, for example by
fuses, with an isolating distance of at least
3 mm.
13
English
Installation location
The DHB is to be installed vertically
in accordance with
(over-sink or
under-sink) in an indoor, frost-free
location as close as possible to the outlet
points. In the case of under-sink
installation, it will not be possible to rotate
the cover
(not the back plate).
Preparing for installation:
– Open the cover cap , release the
securing screw, and remove the cover.
– Remove (a) the lower part of the back
plate
by pressing the two engagement
hooks (28) forwards (a).
– Determine the knock-out point on the
back plate of the device for securing to the
fixing bracket:
– Knock out position 26 when using the
fixing bracket provided.
– Knock out position 27 when installing
the device on the existing Stiebel Eltron
DHE fixing bracket.
– Flush through the cold water pipe
thoroughly.
– Install the water connection components in
accordance with
or . Take note of
the arrows indicating direction of flow.
– When replacing devices DHB-S, DHB-SK,
and DHF by a DHB-Si, the cold water 3-
way shutoff valve can continue to be used.
– With the aid of the installation template,
determine the position of the cable feed
(concealed connection) and of the fixing
bracket.
– Cut the electrical connection cable (29) to
length and strip the insulation.
– Secure the fixing bracket
in the
appropriate manner. If replacing a Stiebel
Eltron DHA instantaneous water heater,
the existing fixing holes (21) can be used,
and the fixing holes (24) if replacing a
device of a third-party manufacturer.
– Secure the device with the screw (8) on
the fixing bracket. By using the knurled nut
(25), any unevenness in the wall surface,
for example due to tiles being offset, can
be compensated for, up to a maximum of
20 mm
(illustration below).
Water connection
– Fit the components supplied with the
device.
The 3-way valve should not be used as an
isolation valve!
Concealed screw connection
Surface screw connection
Suitable Stiebel Eltron surface-mounted fittings
are WKMD and WBMD (see „Special
Accessories“).
The prot.-mode IP 25 is applicable,
only when the following steps are
carried out:
Saw the rear wall lower part to size in
order to facilitate installation (cutting width
max. 2 mm).
Use brass blanks (33) G ½ instead of the
double nipple. Blanks form part of the
scope of supply of Stiebel Eltron WKMD
and WBMD fittings. If third-party fittings
have been used, or if a surface connection
is involved, the special accessory “2 water
plug set” is required (see “Special
Accessories”),
Conventional commercial connection pipes
with diameters 12 and 16 mm and solder
screw connections G 1/2 may be used.
Insert the plastic guide elements into the
cover (see “Concluding installation, 4.”).
Electrical connection
– In the case of concealed installation, the
insulated connection cable must project at
least 30 mm, out of the wall (29).
– Priority circuit:
In combination with other electrical
devices, such as electrical storage heaters,
the load shedding relay is to be fitted:
30 Control cable to the protective
contactor of the second device (e.g.
electrical storage heater).
31 Control contact, opens when the DHB
is switched on.
32 Load shedding relay (see page 14).
Load shedding occurs when the DHB is
operated.
The load shedding relay may only be
connected to the middle phase of
the device terminal block.
Connection in the lower part of the
device
.
In the state as delivered, the device is ready
for electrical connection in the lower part.
Fit the device as shown in the illustration.
To seal against water penetration, the cable
grommet (34) supplied must be used.
Connect the connecting cable in accord-
ance with
to the terminal block (10).
See page 14 for completing installation.
Type DHB 12 Si DHB 18 Si DHB 21 Si DHB 24 Si DHB 27 Si
Water connection (external thread)
G 1/2
Design closed
Rated content 0,4 l
Protection class as per VDE 1
Protection mode as per VDE IP 25
IP 24 for under-sink installation with rotated cover
Weight 5 kg
Rated overpressure 10 bar *
Test marks See device rating plate
Electrical connection 3/PE ~ 400 V
Heating output Stage /  /  /  /  / 
Setting of power
●●● kW 5,6 / 11,1 9 / 18 10,5 / 21 12 / 24 13,5 / 27
selector switch ●● kW 3,7 / 8,8 7 / 15 7 / 17 7,5 / 19 7,5 / 20
kW 5,6 / 9 / 10,5 / 12 / 13,5 /
Switching volumes Stage l/min > 3,0 > 3,4 > 3,6 > 3,8 > 4,0
Type Indicated as Operation ranges for different reference
temperatures *** of the water analysis under
Standards data
at 15 °C 20 °C 25 °C
DHB 12 Si
Specific electrical 1000 cm 890 cm 815 cm
resistance
corresponds to
specific electrical
100 mS/m 112 mS/m 123 mS/m
conductivity 1000 S/cm 1124 S/cm 1127 S/cm
Stage  l/min > 3,4 - 12 > 5,1 - 12 > 6,0 - 12 > 6,8 - 12 > 7,5 - 12
Switch-on flow pressure
(pressure loss) bar 0,5 0,8 0,95 1,15 1,3
at flow volume ** l/min 3,4 5,1 6,0 6,8 7,5
* if the water pressure is above 10 bar, a pressure relief valve has to be installed
** Shower comfort switch in latching position
DHB 18 – 27 Si
Specific electrical 900 cm 800 cm 735 cm
resistance
corresponds to
specific electrical
111 mS/m 125 mS/m 136 mS/m
conductivity 1110 S/cm 1250 S/cm 1360 S/cm
*** Note: The values for the specific electrical resistance or the electrical conductivity will be
determined in a different manner from region to region, at differing temperatures. This
must be taken into account in the assessment.
Table 2
Technical data
Operation ranges for instantaneous water heater related to the specific
electrical conductivity / specific electrical resistance of the water
14
Connection in the upper part of the
device
.
Prepare the device for electrical connection
in the upper part.
Break through the marked inlet aperture in
the rear plate (a) of the device.
Shorten the cable grommet for providing
the seal (b), wet it on the inside with a
lubricating agent for better fitting (ease of
sliding), and fit it in the back plate (c).
Release terminal block (d).
Fit the terminal block (e) in the upper part
of the device. Care is to be taken to
ensure that the switching leads do not
project over the back plate of the device.
Carry out the electrical connection
To provide protection against water
penetration, the cable grommet (34)
provided must be fitted in accordance with
and the dimensions respected.
Establish the electrical connection in
accordance with
.
See concluding the installation.
Concluding the installation
1. Open the 3-way shutoff valve (a).
2.
Secure the lower part of the back plate (b).
3. Fit the lower fixing screw (c).
 Water connection on surface
:
With the water connection on the surface,
break through the knock-out apertures (a)
in the cover in an appropriately clean
manner, using a file if necessary. The guide
pieces (b) provided with the device should
be engaged in the penetration apertures.
Installation over-sink
Bring the inside toothed bar into the
middle position (a).
Fit the cover, secure the screw, and close
the cover cap (b).
Turn the shower comfort switch and
power selector switch (c) to the left and
right stops (internal setting lever will
engage).
Installation under-sink
If installed with the cover rotated,
the device has the protection mode
IP 24 (protected against spray water).
Move the snap nut from the bottom to
the top (a).
Cover over the cover label (Stiebel Eltron,
Temperature trail and rating plate) using
the adhesive label supplied (backing film
serves as fitting aid):
- Remove protective film (b)
- Align the label (c)
- Press the label in place (d)
- Draw off the backing film (e)
- Press the label in place (f)
- Cover over IP 25 on the rating plate
with IP 24 (g)
- Move the lever to the left engagement
position (h).
– Mount cover, tighten screw and close the
cover cap (i).
– Rotate the shower comfort switch and
power selector switch (j) to the left and
right stops (inside setting lever engages).
3. Guarantee
For guarantees please refer to the respective
terms and conditions of supply for your
country.
The installation, electrical connection
and first operation of this appliance
should be carried out by a qualified
installer.
The company does not accept liability
for failure of any goods supplied which
have not been installed and operated in
accordance with the manufacturer's
instructions.
4. Environment and
recycling
Please help us to protect the environment by
disposing of the packaging in accordance with
the national regulations for waste processing.
5. Servicing instructions
qualified installer
Removing the components from the back
panel:
1. Release the central fastening screw
assembly, item (a).
2. Pivot the module carrying components
out of the back panel.
Fitting the disengaged toothed bar
1. Rotate the toothed wheel (b) in the
clockwise direction by hand, as far as the
stop.
2. Slide the toothed bar (c) in from above.
Replace the safety pressure limit switch
(AD 3).
1. Press the engagement hooks (d) in the
direction of the arrow
2. Rotate AD 3, item (e) counter-clockwise
(bayonet fitting).
Initial operation
1. Fit device in position.
2. Fill device with water.
3. Engage the power selector switch
and
shower comfort switch
by rotating it
to the left and right and then bring it into
the basic setting.
4. Connect the fuses.
5. Check function.
Handing the device over to the
customer
1. Select basic position and .
2. Explain the positions of the power
selector switch and the shower comfort
switch (see page 11).
If the water pressure is low, move
the shower comfort switch into the
engagement position and set the power
selector switch to position ●●.
3. Draw the attention of the user to the risk
of scalding.
4. Indicate the location of the short
operating instructions in the cover (3 a).
Accessories
Two-handle pressure fittings
Kitchen fitting WKMD,
Order No. 07 09 17
Bath fitting WBMD,
Order No. 07 09 18
Grohe Relaxa hand-held shower, plastic,
chrome-plated with especially low
pressure loss (0.2 bar at 10 l/min),
Order No. 06 85 21.
Area of use:
With particularly low supply pressure in
the water installation, a clearly improved
temperature stability will be achieved
when showering.
Load-shedding relay LR 1-A,
Order No. 00 17 86
Priority circuit of the DHB with
simultaneous operation, for example, of
electrical storage heaters.
For connection of LR 1-A, see
.
Pipe set
Gas device replacement, for DHB-Si,
Order No. 07 35 28
Surface connection with cold water on the
left and hot water on the right side.
Pipe set
Installation under-sink, for DHB-Si,
Order No. 07 05 65
Connections: Surface fitting, G
3
/
8
, top.
Set of two units, water blanking plugs
G ½, Order No. 07 40 19
Required for water installation with fittings
on surface or beneath it, not with WKMD
or WBMD.
c
a
b
d
e
6697.02
15
English
6. Fault-finding - user
The heating system in the DHB does not
come on, despite the hot water tap being
opened fully.
The flow volume required to turn on the
heating system has not been attained.
– Clean and/or descale.
Differential switch/flow regulator (MRS
switching system) does not come on,
despite the hot water tap being opened
fully.
The flow volume required to turn on the
heating system has not been attained.
– Clean the filter intake after unblocking the
cold water pipe.
No hot water, despite the fact that the diffe-
rential switch can be heard switching on.
– The safety pressure limiter (AD 3) has
switched the device off for safety reasons
(pressure peak in the water installation
> 12 bar).
– Eliminate the cause of the fault (e.g.
defective pressure spray), press blue
button on the safety pressure limiter
(11 a), but only with the tap open and the
device free of pressure.
– Remove the cover. Move the toothed bar
into the middle position and refit the
cover.
Rotate the shower comfort switch and
power selector switch to the left and right
stops (inner setting lever engages) and
bring it into the basic setting.
– Shower comfort switch in wrong position.
– Dirt contamination or lime scale on the
percolators in the fittings or the shower
heads.
– Move the shower comfort switch to the
latching position
.
– Replace heating system.– Heating system defective.
– Dirt filter (in
) blocked.
– Toothed bar (16) not engaged.
Fault Cause Rectification
7. Fault-finding - qualified installer
Fault Cause Rectification
32
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3$!
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&#1+$
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 
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QPQ P
WP YPURUUPP
PU#Z
$
? WUD QP
PD)/QSU,
D!
PTPUP
PPR
PWWPR
,W,-T R  YPU
RUUPTTUPV
TVU YPUP
TRU
Z1YPWU [
PU P 
PQUPPQ\"\U PUWU
PUY
#D#G
TPTR PU
PLP,W,WPR
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
 YZP\PWU
TP !U 
W-T UU RP
PQUP
UY
D

EF
 !UWTOPY
PR
DHDI!
●●● ●●
OUPQ 
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OPQ U
PPW 
GEJPPPUU
V !UW
PR
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TP\U VU WPP
YP !U
W C"HE
EDF5HE
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 YZ"PW\OPRO"
PWUTST
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\OUPV PQPQ
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

-TPOOPR
 T [YPW
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TUOUO U 
HEGEM
XPURP [Y
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PTQPQ Q W 9
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PU TUPVP
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4 *TUPTUPV#"
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TUPV PTQ
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< -TTUPTUPV#"
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W9
4CDEJD
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[PR YPURPT
YPU URP#P4$6
1
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5PQUP
CEDJ!
@ <`^B6TPWU" U
"\OUP
@ ]E^B6TTYU
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WPDPR
$
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TU 
06789
NHDI
T[URPQ
TO
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PO\U !TPWU

NHDI
●●● "DOPEIDI
 RPQPRT[UP
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O!
DHDI!
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DHDI!
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3
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

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  !
!!
"#$
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 
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 
/ !!-
 !

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!-   !
0!!
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2!*,3
1
= 6/
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2
7 (8!
3
7 (!!)

4 !'('
(!'
4  !' 
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2
!-!5
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3
6!,
2
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()
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5IJ K :K' %K7 5K K
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()
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5IJ K7 7K K7 'K7 0K5
42
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
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* +

 +
,+&


- .+

/ 0+,
12
0
&%
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+
1
%
%&
2
/ 3
4((
'(

'(&
&

0+, !"
567898:;:6<=>,+

+,
 ?@*ABB
,+

+
+,
,+,
1CD52
/ E

&+',


/ ,+E
14(2
++
1
2
F+,,
12
+,
 GHI+
&,
&
+
*
.
+
J
,'(
&%1
2
2. 

K+%
+
J
12
 L(12
L
3+
,+


12
J
+

 L
 0
1M -2
 L,
1+
2
 N44(
O,CD5
 3,'
 L
 
 F+
 0+,
 3
 P+
+
 P+
+
 L !M
 L
 0,
 Q
(&,,

 Q
%
 R,
 !"*$S57
 !"
!T
 R
567898:
;:6<=> !;
 J++

 0+
0+,
+
 F,
 3+

1+,
2
J+

,++
,1
2
0,


/ Q+
'(+,&
 !"*&
-
0+,+
)
/ +%
(●●
/ +
4
1
2Q+
++&
%
-UV.
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'"!*%++
$%,(%
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$(-
/ 0,
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/ 0%,

/ 0
1
W**X122
12
."/%
/ Y+
/ Y+
.(4+'+

+&
Z0E
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'+
12
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'+

%

P(
,
UV.Z
/ J,Z
/ R)
0"/%
.&+

/ '(
 ?@*ABB&+&
*ABB&-&*
0"1+%
R
Y+,)
F+,,
12
+,
 GHI
N,+
,+,
 !"
+%)
/ '(
 ?@*ABB&+&*ABB&
-&*
3

+Z
/ P++
(Z
/ [
3&
+
,
/ 0
0

0+
%1
2
/ 0
-&
&%

43

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&,X
 
/,
Y

2$+'$$"3
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5!+'$$"3
4"%
0%'(
I\C I"C $
,4
567898:;:6<=>162'(
'!72
L%?]U,

%()
/ N,+
+1
2
/ ,12
H
,
F,
I\C I"C 567898:
;:6<=>0
,


^3
,_12'(
'!2
/ R,
**`
Ha½
/ 
%1b8%9
!#-b2
! 
 
/ 0
+
12-X
/ 0+)
,
'+&
&'+
,&
,)
 0(
%+,
1&
,,2
 L
+ !"

K,12
2"14$*%++
'&$'(:;<=
K,
+
4
>$)%!
'"
N+
'++

/ 

/ N%%
+
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12&E
Z
/ 0+
\
8%9!-!-
"
0 !"+
,
1
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%&



+0


14))
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

/ J
&&

/ .+
&+12
/ c+c


/ 


/ 
%
 !;
567898:;:6<=>
/ J

/ +

 J

/ 0 !"$5& !"$5\
 !T !"$57


/ .%,
(
12%
/ J
'+,+12

/


0
+,, !M567898:
;:6<=>%
12
/ 0%.
%,
(
9:;#<= 9:;><= 9:;#<= 9:;#<= 9:;#5<=
'-*! ?½ 2"&3
 "!
& @A
"/!B9C
"/!B9C DE#1ADE#
!8
 1
F&"!*
@
&!" *!!
.*-* +GECH@@ &
,/& %&      
'* ●●●   1A4 GA I G> @A1G # # G # +A1 G #5
!/ ●●   +A5 G >A> 5 G1 5 G 5 5A1 G I 5A1 G #@
( "*!)
JJ"!A
*
1KL #@KL #1KL

%M**
 @@@ NO >I@ NO >1 PNO
%
%M* @@ O<GO # O<GO #+ O<GO
 @@@ <GNO # <GNO #5 <GNO
  1A4G Q I G Q @A1G Q # G Q +A1 G Q

%M**
 I@@ NO >@@ NO 5+1 NO
%
%M*  O<GO #1 O<GO +4 O<GO
 @ <GNO #1@ <GNO +4@ <GNO
** "R*!M**
-""*!)

6!.
#$ $
 !"
#!$ !#!!%
S! %& G T+A@ T+A T+A4 T+A> TA@
-* %& G T+A$# T1A$# T4A@$# T4A>$# T5A1$#
0*
-*23

@A1 @A> @AI1 A1 A+
SJ G +A 1A 4A@ 4A> 5A1
J!8-*&M"
44
>$)%%/
'"
0,+
+
/ 
12
/ +1?2&
,%
1+,2
1@2
/ J1A2
/ 
+1B2.
&+(
+

C$'$)
N%%
+
+
12&E
3+

J%'+

8%9!-
8%9!
- J1D2
- F4+
1?2
-

1@2
- 0+1
2
:
0+
12

&+

%
1?2
!$%
/ +
12
/ &

1?2
/ 0
++
%
14,
,+,2
!'$%
0

%?]1%,
2
/ d%,
1D2
/ 3
)
$ %1?2
$ 1@2
$ 01A2
$ .1B2
$ 01E2
$ 3?]U?]1F2
$ +,4
1G2
/ 
F
1H2
/ 01I2
++
%
14,
,+,2
%
- 
- F
- +%

+


- +
- 04(
2'"$
- (

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(+%
,,+
12
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
+
4(&+
%●●
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&+%,
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
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/ +$/JKL:
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/ +%J<L:
3)
/ M9NOPGBQBRBSD&
+
&
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0+eD*$M
/ V$"
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/ V$"
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0567898:
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
,,
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567898:;:6<=>

R&
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12
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STIEBEL ELTRON DHB 24 si Instructions for Use and Installation

Type
Instructions for Use and Installation
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