Bosch Tronic 4000 Series User manual

6721830066 (2021/06) DIV
en Electric Instantaneous Water Heater Installation and Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
de Elektro-Durchlauferhitzer Installations- und Bedienungsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Tronic 4000
TR4001 15/18/21 EB | TR4001 21/24/27 EB

Table of contents
Tronic 4000 – 6721830066 (2021/06)
2
Table of contents
1 Explanation of symbols and safety instructions . . . . . .3
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . .3
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . .3
2 Standards, regulations and directives . . . . . . . . . . . . . .6
3 About the appliance. . . . . . . . . .. . . . . . . . . . . . . . . . . . . .6
3.1 Declaration of conformity . . . . . . . . . . . . . . . . . . . . .6
3.2 Use as intended . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.4 Appliance accessories. . . . . . . . . . . . . . . . . . . . . . . .6
3.5 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.6 Appliance design . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.7 Transportation and storage. . . . . . . . . . . . . . . . . . . .8
4 User Instructions . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .8
4.1 Operating panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.2 Before commissioning the appliance . . . . . . . . . . . .9
4.3 Switching the appliance on/off. . . . . . . . . . . . . . . . .9
4.3.1 LED status display . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.4 Temperature control . . . . . . . . . . . . . . . . . . . . . . . . .9
4.5 Start-up after a power failure . . . . . . . . . . . . . . . . . .9
4.6 Start-up after a water supply cut. . . . . . . . . . . . . . 10
4.7 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.8 Reset internal counters . . . . . . . . . . . . . . . . . . . . . 10
4.9 Connectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.10 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Installation (only for approved contractors). . . . . . . 11
5.1 Important information . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Choose the installation site . . . . . . . . . . . . . . . . . . 11
5.3 Unpack and remove the cover of the
appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.4 Water connection. . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.5 To mount the appliance on the wall. . . . . . . . . . . . 14
5.6 Electrical installation of the appliance . . . . . . . . . 15
5.7 Hydraulic block assembly . . . . . . . . . . . . . . . . . . . 17
5.8 The air must be purged from the appliance . . . . . 18
5.9 Appliance configuration . . . . . . . . . . . . . . . . . . . . 19
5.9.1 Configure the power level . . . . . . . . . . . . . . . . . . . 19
5.9.2 Setting maximum temperature. . . . . . . . . . . . . . . 20
5.9.3 Configuring and installing a Priority Relay . . . . . . 20
6 Electrical connection (only for approved
contractors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . 21
6.2 Install the appliance cover. . . . . . . . . . . . . . . . . . . 22
7 Commissioning of the appliance. . . . . . . . . . . . . . . . . 23
7.1 First commissioning of the appliance. . . . . . . . . . 23
7.2 Removing/Replacing the flow limiter . . . . . . . . . . 24
8 Maintenance (only for approved specialists) . . . . . . 24
9 Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10 Technical information. . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.2 Product data for energy consumption . . . . . . . . . 27
11 Environmental protection and disposal . . . . . . . . . . . 28
12 Data Protection Notice . . . . . . . . . . . . . . . . . . . . . . . . . 28

Explanation of symbols and safety instructions
3
Tronic 4000 – 6721830066 (2021/06)
1 Explanation of symbols and safety
instructions
1.1 Explanation of symbols
Warnings
Inwarnings,signalwordsat thebeginningof a warning areused
to indicate the type and seriousness of the ensuing risk if
measures for minimizing danger are not taken.
The following signal words are defined and can be used in this
document:
DANGER
DANGER indicates that severe or life-threatening personal
injury will occur.
WARNING
WARNING indicates that severe to life-threatening personal
injury may occur.
CAUTION
CAUTION indicates that minor to medium personal injury may
occur.
NOTICE
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is
no risk to people or property.
Additional symbols
Table 1
1.2 General safety instructions
HGeneral description
Read this manual carefully and act
accordingly.
▶ Before utilisation, please read and
keep the user manuals (appliance,
etc.).
▶ Pay attention to the safety and
warning notices.
▶ Follow national and regional
regulations, technical regulations and
guidelines.
▶ Please document the works that were
carried out.
HUse as intended
Theapplianceisintendedforprivateand
domestic use only. The appliance can
also be used in non-domestic
environments, for example offices, as
longastheuseis fordomestic purposes.
Any utilisation other than what is
outlined is not permitted.
▶ The appliance should be used and
assembled as outlined in the text and
images. We do not accept any liability
for damages that are caused due to
the failure to comply with the
instructions in this manual.
▶ This appliance should be used up to a
maximum altitude of 2,000 m above
sea level.
▶ The appliance must be installed in a
room protected from below-zero
temperatures.
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document
•alistentry
–a list entry (second level)

Explanation of symbols and safety instructions
Tronic 4000 – 6721830066 (2021/06)
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WARNING
Danger of electric shocks!
In the event of a malfunction or water
leak in the appliance,
▶ Immediately turn off the electrical
supply to the appliance.
▶ Turn off the cold water supply to the
appliance immediately.
HInstallation
These installation instructions are for
experts specialised in water
installations, electrical engineering and
heatingtechniques.Allinstructionsfrom
the manuals must be observed. Failure
to comply with these instructions can
result in material damage, personal
injury and danger to life.
▶ Read the installation instructions
(heat generator, heating regulator,
etc.) before installation (
chapter 5).
▶ Comply with the current legal
provisions in the country in which the
appliance is installed, and those of
the local energy and water supply
companies.
▶ Install the appliance into a cold-water
circuit containing water for human
consumption (closed circuit).
▶ The installation must only be carried
out by an authorised contractor.
▶ Always switch off the electric current
before opening the appliance.
▶ Toavoiddangeroussituations,repairs
and maintenance may only be carried
out by an authorised technician.
▶ The appliance is suitable for
connection to plastic pipes tested by
DVGW.
▶ This appliance is of protection classI
and must be connected to the
protective conductor.
▶ The appliance must be permanently
connected to the electrical
installation.Thecrosssectionalarea
of the wire must be equivalent to
the power to be installed (
chapter 10).
WARNING
Danger of electric shocks!
The appliance's grounded pipes can
make it seem that the appliance is
grounded.
▶ The appliance must be connected to
the protective conductor cable.
▶ To guarantee compliance to relevant
safety regulations, an all-pole
separator must be fitted during
installation, according to chapter 10.
The contact opening must be at least
3 mm.
▶ Make sure that the maximum and
minimum inlet water pressure is
compliant with the value specified by
the manufacturer (chapter 10).

Explanation of symbols and safety instructions
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Tronic 4000 – 6721830066 (2021/06)
▶ Watertapsandaccessoriesmusthave
been approved for operation with
appliances that function in a closed
circuit (under pressure).
▶ Thetemperatureofthe coldwatercan
be pre-heated with a maximum limit
of 55 °C.
WARNING
Risk of scalding!
▶ If the appliance uses pre-heated
water, the selected or limited
temperature can be exceeded. In
these cases, use a thermostatic valve
to limit the temperature of the pre-
heated cold water.
▶ According to standard EN60335-2-
35, when the appliance is used to
supply water for showering, the water
temperature must be limited to 55 °C
(chapter 5.9.2).
▶ The specific electrical resistance of
the water cannot be less than
1300 cm. Ask your local water
supply supplier to inform you of the
electrical resistance level of the water.
▶ Theapplianceissuitableforsupplying
water to multiple usage points,
including water for baths.
▶Before installing the appliance,
make sure that the electrical
connection is disconnected and
that the water supply is closed.
▶Prepare the water connections
before the electrical connections.
▶ Make onlytheopeningsonthe backof
the appliance that are required for its
installation. If it is a new installation,
unused holes must be sealed so as to
ensure water tightness.
▶ Live parts must not be accessible
after the assembly.
▶ Do not use abrasive, caustic or
alcohol-based cleaning agents.
▶ Do not use steam cleaning
appliances.
HMaintenance
▶ Maintenance must only be carried out
by an authorised contractor.
▶ Alwaysdisconnecttheappliancefrom
the electric current before carrying
out any maintenance work.
▶ The user is responsible for the safety
and environmental compatibility of
the installation and/or maintenance.
▶ Only original spare parts should be
used.
HSafety of appliances with
electricalconnectionfordomestic
use and similar purposes
To avoid danger due to electrical
appliances,inlinewithEN 60335-2-35,
the following specifications are valid:
“Thisinstallationcanbeusedby children
from the age of 3 years and also by
people with limited physical, sensory or
mental capacities or lack of experience
and knowledge, so long as they are
monitored or have received instructions

Standards, regulations and directives
Tronic 4000 – 6721830066 (2021/06)
6
on how to use the installation safely and
understand the resulting dangers.
Children must not play with the
appliance.Cleaningandmaintenanceby
the operator cannot be carried out by
children without monitoring.”
“If the connection cable is damaged, it
must be replaced by the manufacturer,
its customer service personnel or a
similarly qualified person in order to
avoid danger.”
2 Standards, regulations and directives
The following regulations and standards must be observed
during installation and operation:
• Regulations for the electrical installation and for the
connection to the electrical supply network
• Regulations for the electrical installation and for the
connection to the remote signalling and wireless network
• National standards and regulations
3 About the appliance
3.1 Declaration of conformity
The design and operating characteristics of this product
comply with the European and national requirements.
The CE marking declares that the product complies
with all the applicable EU legislation, which is
stipulated by attaching this marking.
The complete text of the Declaration of Conformity is available
on the Internet: worcester-bosch.co.uk.
3.2 Use as intended
The appliance was designed to heat potable water. Please
observe all country-specific regulations, guidelines and
standards for potable water.
The appliance should only be installed in closed systems.
Any other use is non-compliant with its intended use. The
manufacturer accepts no responsibility for damages resulting
from any non-compliant use.
3.3 Accessories
•Shut-offvalve
• Connection Nipple ½" (2x)
•Screws(4x)
•Wallplugs(4x)
•Washers(4x)
• Volumetric flow rate limiter
•Jumpers(2x)
• Fixing materials
• Set of printed documents for the appliance
3.4 Appliance accessories
For more information on accessories available for this
appliance, please consult the appliance catalogue.

About the appliance
7
Tronic 4000 – 6721830066 (2021/06)
3.5 Dimensions
Fig. 1 Dimensions in mm
Fig. 2 Dimensions in mm

User Instructions
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3.6 Appliance design
Fig. 3 Appliance components
[1] Wi-Fi accessory (Accessory not supplied with the
appliance)
[2] Wi-Fi-pairing button and LED
[3] Jumpers (appliance configuration)
[4] "Reset" button
[5] Flow sensor
[6] Water filter and flow limiter
[7] Entry for individual power cables
[8] Cold water inlet ½"
[9] Hot water outlet ½"
[10] Entry for lower power cable
[11] Connection terminal
[12] Temperature sensor
[13] Heating element
[14] Entry for top power cable
[15] Appliance wall-mounting point
3.7 Transportation and storage
The appliance must be transported and stored in a dry, frost-
free location.
When handling,
▶ Do not drop the appliance.
▶ The appliance should be transported in the original
packaging and suitable means of transportation must be
used.
▶ The appliance must only be removed from the original
packaging when it is in the installation location.
4 User Instructions
Please read and comply with the detailed safety notices at the
beginning of this manual!
The appliance heats the water as it circulates inside it.

User Instructions
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Tronic 4000 – 6721830066 (2021/06)
4.1 Operating panel
Fig. 4 Operating panel
[1] Operating status LED
4.2 Before commissioning the appliance
CAUTION
Risk of electric shock!
▶ The initial commissioning of the appliance must be carried
out by a qualified expert who will provide the client with all
the information required for its proper functioning.
NOTICE
Risk of damage to the appliance!
▶ Never turn on the appliance if there is no water. This could
damage the heating element.
4.3 Switching the appliance on/off
Switching On
▶Turnonahotwatertap.
The appliance turns on. The water heats up while it
circulates through the appliance.
Switching Off
▶ Turn off the hot water tap.
4.3.1 LED status display
Table 2
4.4 Temperature control
This appliance is thermostatic and with a factory-defined fixed
temperature control set at 57 °C.
Under certain utilisation conditions and for short periods, the
watertemperaturecan reach70 °C.Nonetheless,thehotwater
pipework can reach high temperatures, with the risk of burns in
the event of contact. To access the temperature blocking
functions (chapter 5.9.2).
CAUTION
Risk of scalding!
Scalding in children, the elderly or adults due to contact with
hot water.
▶ Always check the water temperature by hand.
Table 3
4.5 Start-up after a power failure
After a power failure,
LED Appliance status
Off Appliance switched off
White LED Appliance switched on
White LED flashes
(1x per second)
The appliance is not reaching the set
temperature. Theappliancehasreached
the power limit (chapter
9).
White LED flashes
(2x per second)
Automatic start-up air purge.
Red LED The appliance is malfunctioning (
chapter 9).
White LED flashes
4x
The water inlet temperature is higher
than the temperature selected on the
appliance (Solar). The appliance does
not heat up.
Length of time for scalding to occur
Temperature Elderly people/
children under 5
years of age
Adults
50 °C 2.5 minutes more than 5 minutes
52 °C less than 1 minute 1.5 to 2 minutes
55 °C Roughly 15 seconds Roughly 30 seconds
57 °C Roughly 5 seconds Roughly 10 seconds
60 °C Roughly 2.5 seconds Less than 5 seconds
62 °C Roughly 1.5 seconds Less than 3 seconds
65 °C Roughly 1 second Roughly 1.5 seconds
68 °C Less than 1 second Roughly 1 second
LED Appliance status

User Instructions
Tronic 4000 – 6721830066 (2021/06)
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▶ Turn on the hot water tap completely and let the water flow
until hot water comes out.
4.6 Start-up after a water supply cut
▶ Turn off the appliance's circuit breaker at the electrical
cabinet.
▶ Turn on a hot water tap and keep it on until the air is
completely purged out of the pipework.
▶ Turn off the hot water tap.
▶ Turn on the appliance circuit breaker at the electrical
cabinet.
▶ Turn on the hot water tap and let the water flow for at least
for a minute.
Only after this operation will it be safe to use the appliance
again.
4.7 Cleaning
▶ Do not use abrasive or solvent-based cleaning agents, or
alcohol-based products.
▶ Do not use steam cleaning appliances.
▶ Clean the exterior with mild cleaning agents.
▶ Clean the remains of dirt or limescale.
4.8 Reset internal counters
The appliance is capable of monitoring water and energy
consumption.
It is possible to reset the appliance's internal counters, for this:
▶ Remove the front fascia of the device.
Fig. 5
▶ Remove the cover using a suitable tool.
Fig. 6
▶ Press and hold button [1].
The LED turns on, indicating the start of the reset
sequence.
Fig. 7
[1] Wi-Fi-pairing button
After the LED turns off,
▶ Release the button.
Internal counters have been reset.
The LED takes a few seconds to turn off.
4.9 Connectivity
This appliance supports Wi-Fi connectivity.
For more details on accessories available for this device, see
the device catalogue.
4.10 Customer Service
Whenever you contact the Customer Service Hotline, please
provide the serial number of the appliance (SNR/TTNR).

Installation (only for approved contractors)
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Tronic 4000 – 6721830066 (2021/06)
The serial number for the appliance can be found on the plate
inside of the front cover.
5 Installation (only for approved
contractors)
5.1 Important information
The installation, electrical connection and the initial
commissioning are operations that must be carried out by
qualified experts only.
In order to ensure the correct installation and operation of the
appliance, please observe all regulations, technical guidelines
and applicable national and regional directives.
WARNING
Risk of electric shock!
Before beginning the installation work:
▶ Turn off the electric supply at the electrical cabinet.
▶ Turn off the cold water supply.
CAUTION
Risk of scalding due to hot water!
If you use preheated water, the temperature of the hot water
may exceed the maximum temperature established for the
appliance and cause scalding, in which case;
▶ Use a thermostatic valve to limit the temperature of the
water entering the appliance.
NOTICE
Risk of damage to property!
Risk of irreparable damage to the appliance.
▶ Only remove theappliance from the packaging when in the
installation location.
▶ Handle the appliance with care.
NOTICE
Risk of damage to property!
Risk of damage to heating elements.
▶ Carry out the water connections first.
▶ Carry out the electrical connections, with the circuit
breaker turned off, ensuring that it is duly grounded.
▶ Purge the appliance completely before turning on the
residual current device, by turning on the hot water tap
completely and let the water circulate in the appliance for
1minute.
5.2 Choose the installation site
NOTICE
Danger of damage to the appliance!
Never support the appliance on the water connections and/or
by the electric feed cable.
▶ Choose a wall which is strong enough to support the weight
of the appliance.
▶ Use the fixing materials supplied with the appliance.
▶ Mountthe appliance in a verticalpositionwiththe hydraulic
connections below.
Installation site
▶ Comply with current guidelines.
▶ Install the appliance in a room where the ambient
temperature never drops below 0 °C.
▶ Do not install the appliance in locations with an altitude
above 2000 m above sea level.
▶ Install the appliance near to the most used hot water tap, so
as to reduce thermal loss and wait times.
▶ Install the appliance in a location where it is possible to
carry out maintenance.
▶ Install theappliancetakingintoaccountthe specific voltage
on the data plate.
Protection zone
The permitted installation zone depends on the electrical
connection configuration chosen for the installation of the
appliance (chapter 6.1).
When the upper or lower connections are used (Fig. 35 and
36), the appliance has a protection rating of IP25 and can be
installed in protection zone 1 or above.
However, when the lower connection with individual cables is
used (Fig. 37), the protection rating is reduced to IP23 and the
appliance can only beinstalled outside of the protectionszones
0, 1 and 2.

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Table 4
Fig. 8
[0] Protection zone 0
[1] Protection zone 1
[2] Protection zone 2
[2*] Without the wall, protection zone 2 must extend to
600 mm away from the bath
[A] 600 mm radius from the bath or shower
5.3 Unpack and removethe coverof the appliance
NOTICE
Risk of damage to the appliance!
In the event of transportation damages,
▶ Do not install the appliance.
Before carrying out any installation,
▶ Pay attention to the instructions given in this manual.
▶ Perform the installation of the appliance according to the
following images.
▶ Unpack the appliance.
▶ Dispose of the packaging according to the recycling
systems applicable in the country.
▶ Remove the front fascia of the appliance.
Fig. 9 Remove the front fascia
▶ Loosen the fixing screw at the front of the appliance.
Fig. 10 Remove the screw
Electrical connection Protection
rating (PR)
Permitted
protection zone
Upper connection
(Fig. 35)
IP25 Zone 1 and higher
Lower Connection
(Fig. 36)
IP25 Zone 1 and higher
Lowerconnectionwith
individual cables
(Fig. 37)
IP23 Outside of Zone 2

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Tronic 4000 – 6721830066 (2021/06)
▶ Loosen and remove the front fascia of the appliance.
Fig. 11
▶ Turn around the hot water pipe.
▶ Open the side fixing parts of the hydraulic block.
Fig. 12
▶ Remove the hydraulic block from the back.
Fig. 13
5.4 Water connection
NOTICE
Damages to the installation!
Damages to the water pipework.
▶ Ensure that the pipework can withstand a maximum
pressure of 10 bar and a maximum temperature of 100 °C.
NOTICE
Danger of damage to the appliance!
The existence of sand can cause a reduction in the flow rate and
its obstruction in more serious cases.
▶ Purge the water circuit before installing the appliance.
Accessories
The accessories supplied with the device must be used, as
shown in Fig. 15.
▶ Only use taps and accessories with capacity to operate in a
closed circuit (under pressure).

Installation (only for approved contractors)
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14
Identify the water connections
▶ Make sure the cold and hot water pipes are duly identified,
in order to avoid confusion.
Fig. 14
[1] Cold water inlet (G ½")
[2] Hot water outlet (G ½")
▶ Install the water connection accessories.
During the installation of the shut-off valve,
▶ Make sure that the shut-off valve handle is facing
downwards.
Fig. 15
5.5 To mount the appliance on the wall
▶ Remove the plastic part from the back of the appliance.
Fig. 16
▶ Use the back of the appliance as a hole pattern.
▶ Support the appliance on the cold water accessory to
facilitate marking on the wall.
▶ Mark the mounting point, ensuring that the appliance is in a
level and vertically position.
Fig. 17

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Tronic 4000 – 6721830066 (2021/06)
▶ Separate the fixing parts.
Fig. 18
▶ Fix into the wall the fixing parts for the appliance.
Fig. 19
▶ Attach the back of the appliance to the wall.
Fig. 20
5.6 Electrical installation of the appliance
WARNING
Risk of electric shock!
Contact with simple insulated electrical cables can cause
electric shock.
▶ Make sure that the appliance is not spaced from the wall if
the lower connection site is used with individual cables.
It is possible to connect the power cable in three different
positions;
• Upper connection
• Lower connection
• Lower connection with individual cables

Installation (only for approved contractors)
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Fig. 21
The opening of the cable conduit must fit the power cable
perfectly. If the cable conduit is damaged during assembly, the
holes must be covered in a watertight manner.
▶ The cable conduit must be cut according to thediameter of
the power cable.
Fig. 22
▶ Insert the connection cable at least 40 mm inside the
appliance, unless you are using the lower connection site
with individual cables.
▶ Pass the power cable through the cable conduit, ensuring
tightness.
Fig. 23
▶ If the distance between the appliance and the wall is 2-
8 mm, the appliance must be levelled using the upper
mounting fixing.
Fig. 24
If the appliance is not perpendicular to the wall,
▶ Use spacers at the bottom to level the appliance.

Installation (only for approved contractors)
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Tronic 4000 – 6721830066 (2021/06)
▶ The spacers should be placed at the back of the appliance.
Fig. 25
[1] Spacers
▶ Level the appliance with the upper mounting fixing and the
spacers, if the distance between the appliance and the wall
is 8-16 mm.
Fig. 26
If the appliance is not securely fixed to the wall,
▶ Use the screws to fix the spacers to the wall.
Fig. 27
After levelling the appliance,
▶ Tighten the fixings so that the appliance is secured to the
wall.
Fig. 28
5.7 Hydraulic block assembly
▶ Position the hydraulic block into the back of the appliance.

Installation (only for approved contractors)
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▶ Position the water inlet and outlet pipes into the sealing
membrane.
Fig. 29
▶ Adjust the hydraulic block until it is firmly secured at the
back of the appliance.
Fig. 30
▶ Place the bonded washers onto the water connections.
▶ Tighten the water connections.
▶ Check if there are leaks.
5.8 The air must be purged from the appliance
After all of the hydraulic connections to the appliance have
been carried out, purge the air from the appliance,
▶ Turn on the cold water supply.

Installation (only for approved contractors)
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Tronic 4000 – 6721830066 (2021/06)
▶ Turn on a hot water tap for 1 minute to purge air from the
appliance.
Fig. 31
[1] Hot water tap
5.9 Appliance configuration
CAUTION
Risk of electric shock!
Before configuring the appliance,
▶ Turn off the electric supply at the electrical cabinet.
It is possible to configure several parameters on the same
appliance.
▶ Use the electronic Jumpers provided to carry out the
different appliance configurations.
Fig. 32 Supplied electronic Jumpers
▶ Save the removed Jumpers for future changes or
installations.
Fig. 33
5.9.1 Configure the power level
▶ Use jumpers J2 and J3 to configure the power level of the
appliance, according to the table below.

Installation (only for approved contractors)
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Table 5 Configuring the power
If the power of the appliance is changed,
▶ Check which flow limiter should be used (chapter 10).
5.9.2 Setting maximum temperature
▶ UseJumpersJ4and J5to set themaximum temperature of
the appliance, according to the table below.
Table 6 Setting maximum temperature
5.9.3 Configuring and installing a Priority Relay
For the appliance to work with a priority electric circuit, a
special priority relay (BZ 45L21) is required. Other types of
priority relays, with the exception of electronic priority relays,
may not work correctly.
Fig. 34 Wiring diagram
▶ Remove Jumper J1 to activate the Priority Relay mode in
the appliance's electronics system, see table below.
TR... 11/
13
TR... 15/
18/21
TR... 21/
24/27
Jumpers: J2 - J3
13 kW
(Factory
settings)
21 kW
(Factory
Settings)
27 kW
(Factory
Settings)
11 kW
18 kW 24 kW
15 kW 21 kW
Max. Temperature Jumpers: J4 - J5
Maximum Temperature 57 °C
(Factory Settings)
Maximum Temperature 53 °C
(EN60335 - if the appliance
supplies water for showering)
Maximum Temperature 48 °C
Maximum Temperature 42 °C
Max. Temperature Jumpers: J4 - J5