Bosch Tronic ES 030 Series Operating manual

User and Installation manual
Electrical water storage tank
Tronic
6720816255-00.1V
ES 030 | 050 | 080 | 100 | 120...
6 720 816 255 (2018/06) DIV

2
Index
Tronic – 6 720 816 255 (2018/06)
Index
1 Key to symbols and safety instructions . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Security measures . . . . . . . . . . . . . . . . . . . . . 3
2 Technical Characteristics and dimensions . . . . . . . 5
2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Type overview . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Appliance Description . . . . . . . . . . . . . . . . . . 5
2.4 Anticorrosion protection . . . . . . . . . . . . . . . . 5
2.5 Accessories (included in the appliance
packaging) . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.6 Specification . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.8 Appliance layout . . . . . . . . . . . . . . . . . . . . . . 8
2.9 Electrical wiring diagram . . . . . . . . . . . . . . . 8
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Transport, storage and recycling regulations 9
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Important notes . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Siting the appliance . . . . . . . . . . . . . . . . . . . . 9
5.3 Wall mounting . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4 Water connection . . . . . . . . . . . . . . . . . . . . 10
5.5 Electrical connections . . . . . . . . . . . . . . . . . 11
5.6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1 Switching the appliance on/off . . . . . . . . . . 12
6.2 Setting the DHW temperature . . . . . . . . . . 12
6.3 Draining the appliance . . . . . . . . . . . . . . . . 12
7 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . 13
8 Inspection/Maintenance (only for authorized
technicians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1 User information . . . . . . . . . . . . . . . . . . . . . 14
8.1.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1.2 Safety valve verification . . . . . . . . . . . . . . . 14
8.1.3 Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1.4 Maintenance and repair . . . . . . . . . . . . . . . 14
8.2 Periodic maintenance work . . . . . . . . . . . . 14
8.2.1 Functionality verification . . . . . . . . . . . . . . 14
8.2.2 Magnesium Anode . . . . . . . . . . . . . . . . . . . . 14
8.2.3 Periodic cleaning . . . . . . . . . . . . . . . . . . . . . 15
8.2.4 Long standing - non working (more than 3
months) . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
8.3 Safety thermostat . . . . . . . . . . . . . . . . . . . . 15
8.4 Required actions after any maintenance
work has been carried out . . . . . . . . . . . . . .15
9 Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1 Problem/Cause/Solution . . . . . . . . . . . . . . 16

3
Key to symbols and safety instructions
Tronic – 6 720 816 255 (2018/06)
1 Key to symbols and safety
instructions
1.1 Key to symbols
Warnings
The following keywords are defined and
can be used in this document:
•NOTICE indicates a situation that
could result in damage to property or
equipment.
•CAUTION indicates a situation that
could result in minor to medium
injury.
•WARNING indicates a situation that
could result in severe injury or death.
•DANGER indicates a situation that
will result in severe injury or death.
Important information
Additional symbols
1.2 Security measures
Installation
▶ Installation must only be carried out
by an authorised service.
▶ IEC 60364-7-701 must be observed
when installing the appliance and or
electrical accessories.
▶ The appliance must be installed in a
room free from the risk of frost.
▶ First connect the appliance
hydraulically and fill with water, then
connect the power supply.
▶ During the installation isolate the
appliance from the power supply.
Warnings in this document
are identified by a warning
triangle printed against a
grey background.
Keywords at the start of a
warning indicate the type
and seriousness of the
ensuing risk if measures to
prevent the risk are not
taken.
This symbol indicates
important information
where there is no risk to
people or property.
Sym
bol
Explanation
▶ Step in an action sequence
Cross-reference to another part
of the document
• List entry
–List entry (second level)
Table 1

4
Key to symbols and safety instructions
Tronic – 6 720 816 255 (2018/06)
Installation and conversion
▶ Only permit an authorised service to
install this appliance.
▶ Neverobstructthesafetyvalve outlet.
▶ During the heat-up, water may be
expelled from the safety valve.
Maintenance
▶ Only authorised technicians are
permitted to service this appliance.
▶ Isolate the appliance from its power
supply before commencing any
maintenance work on the appliance.
▶ Customers are responsible for the
safety and environmental
compatibility environment of the
appliance as well as its maintenance.
▶ Use only original spare parts.
▶ To ensure compliance with all safety
requirements, a defective power
cable may only be replaced by an
authorised service.
Handover to the user
When handing over the heating system,
instruct the user in its operation and
operating conditions.
▶ Explain the operation - with particular
emphasis on all safety-related
actions.
▶ Explain that conversions and repairs
must only be carried out by an
approved contractor.
▶ Point out the need forinspectionsand
maintenance for safe and
environmentally-compatible
operation.
▶ The installation and operating
instructions must be given to the user
for keeping.
Safety of electrical appliances for
domestic use and similar purposes
The following requirements apply in
accordancewithEN60335-1in order to
prevent hazards from occurring when
using electrical appliances:
“This appliance can be used by children
of 8 years and older, as well as by people
with reduced physical, sensory or
mental capabilities or lacking in
experience and knowledge, if they are
supervised and have been given
instruction in the safe use of the
appliance and understand the resulting
dangers. Children must not play with the
appliance. Cleaning and user
maintenance must not be performed by
children without supervision.”
“If the power cable is damaged, it must
be replaced by the manufacturer, its
customer service department or a
similarly qualified person, so that risks
are avoided.”
▶ The appliance should dispose of an
independent connection to the DB
board (electric board), protected by a
30 mA differential circuit breaker and
earthing.

5
Technical Characteristics and dimensions
Tronic – 6 720 816 255 (2018/06)
2 Technical Characteristics and
dimensions
2.1 Intended use
The appliance was designed to heat and store DHW. Comply
with all regulations and standards related to drinking water
applicable in the country.
Use the appliance only in closed systems.
Using the appliance for any other purpose will be considered
incorrect use. Bosch accepts no liability for any damage
resulting from such use.
2.2 Type overview
[ES] Electric water storage tank
[030] Capacity (litters)
[6] Version
[1200W] Power
[BO] Brand
[L0] Design
[X] Standard diameter
[K] Temperature regulator
[T] Thermometer
[W] Wall hang
[V] Vertical installation
[H] Horizontal installation
[B] Bottom water connections
2.3 Appliance Description
• Steel-glassed tank in conformity with the European
regulations
• Tank designed and built to withstand high pressures
• Exterior material: steel sheeting and / or plastic
• Easy handling
• Insulating material: polyurethane without CFC
• Anticorrosion protection: magnesium anode.
2.4 Anticorrosion protection
The inside of the tank is lined with homogeneous glass enamel,
completely neutral with regards to compatibility and contact
with potable water. This lining is neutral with regard to the use
with potable water. The existence of a magnesium anode
provides additional anticorrosion protection.
2.5 Accessories (included in the appliance
packaging)
Fig. 1
[1] Sleeve (2x)1)
[2] Caps (2x)1)
[3] Security valve (8 bar)
[4] Galvanic insulators1)
Water characteristics Unit
Water hardness, min. ppm
grain/US gallon
°dH
120
7.2
6.7
pH, min. – max. 6.5 – 9.5
Conductivity, min. – max. μS/cm 130 – 1500
Table 2 Water characteristics
ES 030 6 1200W BO L0 X K T W V B
ES 050 61500W BO L0 X K T W H B
ES 050 6 2000W BO L0 X K T W V B
ES 080 61500W BO L0 X K T W H B
ES 080 6 2000W BO L0 X K T W V B
ES 100 61500W BO L0 X K T W H B
ES 100 6 2000W BO L0 X K T W V B
ES 120 62000W BO L0 X K T W V B
Table 3
1) not available in all models
6720801526-01.2V
3
1
2
4

6
Technical Characteristics and dimensions
Tronic – 6 720 816 255 (2018/06)
2.6 Specification
This appliance meets the requirements specified by the
European Directives 2014/35/EC and 2014/30/EC.
Technical characteristics
Units ES 030 V. ES 050 V. ES 050 H. ES 080 V. ES 080 H. ES 100 V. ES 100 H. ES 120 V.
General characteristics
Capacity l30 50 50 80 80 100 100 120
Weight (empty) kg 11,4 14,8 15,1 20,2 20,5 23,7 24,0 27,4
Weight (full) kg 41 64,8 65,1 100,2 100,5 123,7 124,0 127,4
Water details
Maximum permissible pressure bar 8
Water connections Pol. 1/2
Electrical characteristics
Nominal power W 1200 2000 1500 2000 1500 2000 1500 2000
Heating time (T- 50 °C) 1h16m 1h22m 1h43m 2h27m 2h46m 2h57m 3h47m 3h44m
Voltage tension Vac 230
Frequency Hz 50
Monophasic electric current A 5,2 8,7 6,5 8,7 6,5 8,7 6,5 8,7
Power cable m1,4
Protection class I
Type of protection IP25 IP24 IP25 IP24 IP25 IP24 IP25
Water temperature
Temperature ranges °C until 65 °C
Table 4 Technical characteristics

7
Technical Characteristics and dimensions
Tronic – 6 720 816 255 (2018/06)
2.7 Dimensions
Fig. 2 Dimensions in mm (Vertical installation)
Appliance A B C D E F G
ES030... 447 433 225 451 165 100 to 280 240
ES050... 610 433 370 451 165 100 to 280 240
ES080... 857 433 580 451 165 100 to 280 240
ES100... 1019 433 730 451 165 100 to 280 240
ES120... 1182 433 905 451 165 100 to 280 240
Table 5
6720815708-01.1V
F
G
ØB
A
C9
D
E
100

8
Regulations
Tronic – 6 720 816 255 (2018/06)
Fig. 3 Dimensions in mm (Horizontal installation)
2.8 Appliance layout
Fig. 4 Appliance composition
[1] Hot water outlet ½ ” male
[2] Magnesium anode
[3] Insulating material - polyurethane
[4] Tank
[5] Heating element
[6] Safety and control thermostat
[7] Cold water inlet ½ ” male
2.9 Electrical wiring diagram
Fig. 5 Electric circuit diagram
3Regulations
The country’s regulations currently in force must be fulfilled for
the installation of the electric appliances.
4Transport
▶ Do not drop the appliance.
▶ Remove the appliance from the packaging only at the place
of installation.
Appliance A B C D E F
ES050... 585 433 165 451 234 343
ES080... 825 433 350 451 234 343
ES100... 985 433 495 451 234 343
Table 6
6720815708-03.1V
A
D
E100
C
F
ØB
4
3
5
7
1
2
6
6720815708-02.1V
L
N
PE
220-240V~
L+N+PE
6720815708-04.1V

9
Installation
Tronic – 6 720 816 255 (2018/06)
4.1 Transport, storage and recycling regulations
• The equipment should be stored in protected areas against
negative temperatures.
• Whenever applicable, the EU 2002/96/EC directive
imposed and the differentiated collection / gathering of
used electrical and electronic equipment.
5 Installation
5.1 Important notes
5.2 Siting the appliance
Regulations concerning the installation site
▶ Comply with country-specific requirements.
▶ Never install the appliance above a heat source.
▶ Never install the appliance in rooms where the ambient
temperature can fall below 0 °C.
▶ Do not install the appliance in locations where the altitude
is above 5000 m.
▶ Install the appliance near the most frequently used draw-
off point to keep energy losses and waiting times to a
minimum.
▶ Install the appliance in a room that permits the replacement
of the magnesium anode, and necessary maintenance
procedures.
Protection area 1
▶ Do not install in protection area 1.
▶ Install the appliance outside the protection area.
Fig. 6 Protection areas
5.3 Wall mounting
Installation, power connection and
commissioning must only be carried out by a
service approved for such work by the local
entities.
CAUTION:
▶ Do not drop the appliance.
▶ Remove the appliance from the
packaging only at the place of
installation.
▶ Wherever applicable, comply with the
IEC 60364-7-701 norm on installing the
appliance and / or any electric
accessories.
CAUTION: Damage to the heating elements!
▶ Firstly connect all the water connections
and fill the appliance.
▶ Connect the appliance to the electric
point, assuring connection to earth
CAUTION:
▶ Chose a sufficiently robust wall to
support the appliance with the tank full,
page 6.
CAUTION:
▶ Make sure that the appliance is
connected to the DB board (electrical
board) with a connection to the earth
cable.
NOTICE: Material damage!
▶ Use sleeves and hooks (according with
the type of wall) that can hold the
appliance with the tank full (page 6).
60 cm
60 cm
225 cm
6720815708-05.1V

10
Installation
Tronic – 6 720 816 255 (2018/06)
Fig. 7 Vertical installation
Fig. 8 Horizontal installation
5.4 Water connection
▶ Identify the piping for hot and cold water, in order to avoid
a possible swap (Fig. 9).
Fig. 9
[1] Cold water inlet (right hand side)
[2] Hot water outlet (left hand side)
In case of vertical installation, ensure that the
water connections are positioned on the
bottom part of the appliance and in vertical
position.
NOTICE: Damage to appliance connections
through contact corrosion!
▶ Use galvanized insulators in your water
connections. These will avoid galvanic
electric currents between the hydraulic
link metals and, consequently corrosion
of these.
NOTICE: Material damage!
▶ Install a filter at the water inlet in areas
where the water contains particles or
sediments.
It is recommended:
▶ to purge the system before appliance
installation, the existence of sand can
cause a reduction in flow or even cause a
total obstruction.
6720815708-06.1V
2 1

11
Installation
Tronic – 6 720 816 255 (2018/06)
▶ Use the appropriate connection accessories to do the
hydraulic connection to the appliance.
Fig. 10 Water connection
[1] Galvanic insulator
[2] Hot water outlet
[3] Safety valve
[4] Drain connection
[5] Cut off valve
[6] Reduction valve
[7] Non return valve
[8] Connection to the water line
In the case of freezing:
▶ Switch off the appliance.
▶ Purge the appliance (chapter 6.3).
Safety valve
5.5 Electrical connections
All adjusting devices, verification and safety mechanisms were
submitted to a rigorous test in factory and are ready to work.
▶ Connect the appliance via a socket with earth connection.
5.6 Start-up
▶ Verify that the appliance has been correctly installed and
assembled.
▶ Open the water inlet valves.
▶ Open all the hot water taps in order to ensure all the air is
purged from the piping.
▶ Control the tightness of all the connections and ensure that
the appliance fills to its full capacity.
▶ Connect the appliance to the electric current.
▶ Inform the customer of any user information of the
appliance and handling.
In order to avoid problems caused by sudden
pressure changes, we recommend the
installation of a non return valve at the
appliance (Fig. 10, [7]).
DANGER:
▶ Install a safety valve at the water inlet of
the appliance (Fig. 10).
NOTICE:
NEVER OBSTRUCT THE PURGE OUTLET OF
THE SAFETY VALVE.
Never install any accessory between the
safety valve and the cold-water inlet (right
hands side) of the appliance.
6720643873-05.1V
3 4
5 6 7 8
2
1
1
If the pressure at the cold water inlet is
superior to that of 80% of the maximum
pressure of the appliance at, ie: 6,4 bar:
▶ Install a reducing valve (Fig. 10).
The safety valve will trigger every time the
water pressure in the appliance exceeds 8
bar (0,5 bar). A facility for draining the
expelled water must be provided.
DANGER:
By electrical discharge!
▶ Before working on the electrical
components, firstlycut the power, (fuse,
circuit breaker or other).
CAUTION:
Electrical protection!
▶ The appliance should dispose of an
independentconnection tothe DBboard
(electric board), protected by a 30 mA
differential circuit breaker and earthing.
The electrical connection must be realized in
accordance with the current country laws
regarding electrical installations.

12
Use
Tronic – 6 720 816 255 (2018/06)
6Use
Fig. 11 User interface
[1] Indicator
[2] Temperature selector
6.1 Switching the appliance on/off
Turn on
▶ Connect the appliance via a socket with earth connection.
Turn off
▶ Disconnect the appliance from the electric current.
6.2 Setting the DHW temperature
The temperature of the water outlet can be regulated, on the
temperature regulator selector up to 65 °C.
Increasing the temperature
▶ Turn the temperature selector to the left.
Fig. 12 Increase the temperature
Decrease the temperature
▶ Turn the temperature selector to the right.
Fig. 13 Decrease the temperature
6.3 Draining the appliance
▶ Turn off the appliance from the electric supply.
▶ Switch off the water cutting valve and open a hot water tap.
▶ Open the safety valve (Fig. 14).
CAUTION: The electrical connection must
be done in accordance with the current
domestic electrical compliance installation
regulations.
Once the water has reached the selected
temperature level, the appliance stops
heating up (the indicator switches off).
When the water temperature is below the
desired value, the appliance re-starts the
heating cycle (the indicator switches back
on) until it reaches the desired temperature
selected.
6720815708-07.1V
1
2
DANGER: Burn risk!
Open a hot water tap to and verify the
temperature of the water in the appliance
before opening the safety valve.
▶ Wait until the water temperature
decreases in order to avoid burns or any
other damage.
+
6720815708-08.1V
6720815708-09.1V
-

13
Environment / disposal
Tronic – 6 720 816 255 (2018/06)
▶ Wait until the appliance is completely empty.
Fig. 14 Manual activation of the safety valve
7 Environment / disposal
Environmental protection is a fundamental corporate strategy
of the Bosch Group.
The quality of our products, their efficiency and environmental
safety are all of equal importance to us and all environmental
protection legislation and regulations are strictly observed.
We use the best possible technology and materials for
protecting the environment taking into account of economic
considerations.
Packaging
We participate in the recycling programmes of the countries in
which our products are sold to ensure optimum recycling.
All of our packaging materials are environmentally friendly and
can be recycled.
Old electrical and electronic appliances
Electrical or electronic devices that are no
longer serviceable must be collected
separately and sent for environmentally
compatible recycling (in accordance with the
European Waste Electrical and Electronic
Equipment Directive).
To dispose of old electrical or electronic
devices, you should use the return and
collection systems put in place in the country
concerned.
6720643873-06.1V

14
Inspection/Maintenance (only for authorized technicians)
Tronic – 6 720 816 255 (2018/06)
8 Inspection/Maintenance (only for
authorized technicians)
8.1 User information
8.1.1 Cleaning
▶ Never use abrasive, corrosive or solvent cleaning
detergents.
▶ Use a soft cloth to clean the exterior of the appliance.
8.1.2 Safety valve verification
▶ Verify that the water is expelled during the heating process
through the safety purge valve.
▶ Never obstruct the safety purge valve outlet.
8.1.3 Safety valve
▶ Manually open the safety valve at least once a month (Fig.
14).
8.1.4 Maintenance and repair
▶ It is the responsibility of the client to regularly call out
technical assistance or an authorized technician to perform
periodic maintenance.
8.2 Periodic maintenance work
▶ Only make use of genuine replacement parts.
▶ Order the replacement parts in accordance with the spare
parts list for the appliance.
▶ When carrying out maintenance work change the
disassembled joints and replace these with new ones.
8.2.1 Functionality verification
▶ Verify the good working order of all the elements.
8.2.2 Magnesium Anode
▶ Switch off the circuit breaker feeding the appliance.
▶ Before starting, verify that the appliance is disconnected
from the electric current.
▶ Completely drain the appliance (section 6.3).
▶ Remove the lid of the appliance [1] by unscrewing the
fixing screws.
▶ Disconnect the connecting cables to the thermostat.
▶ Unscrew the flange fastening screws.
▶ remove the flange [2].
▶ Verify the magnesium anode [3] and replace it if necessary.
Maintenance must only be carried out by an
authorized technician.
WARNING:
Ensure the purging of the water does not
cause any damage to persons or goods.
WARNING:
Before carrying out any maintenance work:
▶ Turn off all electric current.
▶ Turn off the water cut off valve
(Fig. 10).
CAUTION: Damages to the glass enamel!
Never clean the enamel interior of the
appliance with decalcifying agents. The
magnesium anode ensures anti corrosion
protection. There is no need for alternative
products for the protection of the enamel.
This appliance disposes of an anti-corrosion
magnesium anode in the inside.
WARNING:
It is forbidden to operate the appliance
without an installed magnesium anode.
WARNING:
The magnesium anode needs to be annually
tested and replaced if necessary, failing to
do so will result in the termination of the
warranty. The appliance without this type of
protection will not be covered by the
manufactures warranty.

15
Inspection/Maintenance (only for authorized technicians)
Tronic – 6 720 816 255 (2018/06)
Fig. 15 Access and identifying internal components
[1] Lid of the appliance
[2] Flange
[3] Magnesium anode
8.2.3 Periodic cleaning
▶ Turn off all hot water taps.
▶ Inform all residents of the danger of burns.
▶ Position the thermostat on the maximum position, turn the
temperature selector to the left up to the knocker (
Fig. 12).
▶ Wait until the indicator turns off.
▶ Open all the hot water taps, starting with the nearest one to
the furthest one from the appliance, and purge all the hot
water from inside the appliance, at least 3 minutes.
▶ Turn off all the hot water taps, and position the thermostat
on the normal working position.
8.2.4 Long standing - non working (more than 3 months)
▶ Switch off the electric current to the appliance.
▶ Drain the appliance completely.
▶ Fill the appliance until the water comes out from all the hot
water taps.
▶ Turn on the appliance to the electric current.
8.3 Safety thermostat
The appliance is equipped with an automatic safety
thermostat. If for any reason the water temperature inside the
appliance exceeds the safety limit, the switch will trigger and
cut all electric current supplying the appliance, thus avoiding
any accidents.
Fig. 16 Reset button
8.4 Required actions after any maintenance work
has been carried out
▶ Refasten and check the fastness of all the water
connections.
▶ Turn on the appliance.
DANGER: Burn risk!
During the periodic cleaning process the hot
water may cause serious burns.
▶ Carry out this operation outside working
hours.
After a long period of inactivity you should
change the water inside the appliance (more
than 3 months)).
2
3
6720815708-10.1V
1
DANGER: The reactivation of the appliance
should only be done by an authorized
technician!
The action to manually re-start or reactivate
should only be done once the cause of which
initiated this action has been identified and
rectified.To reactivate the device:
▶ Press the button firmly (Fig. 16).
6720810887-01.1V

16
Problems
Tronic – 6 720 816 255 (2018/06)
9Problems
9.1 Problem/Cause/Solution
In the following diagram there are some solutions described for
possible problems / troubleshooting (these should only be
performed by authorized technicians).
DANGER:
Assembly, maintenance and repairs should
only be carried out by authorized
technicians.
Problem Cause Solution
Cold water Very hot water Insufficient capacity Continuous draining from the safety valve Rust coloured water Water with a scent (bad smell) Noise in the appliance
XPlant or circuit breaker surcharge
(capacity exceeded).
▶ Verify if the device is connected to a
dedicated electric point to supply
sufficient electric current to the
device.
X X Incorrect temperature regulating through
the thermostat.
▶ Regulate the thermostat.
XThermostat temperature safety active. ▶ Replace or re-install the thermostat.
X Damaged heating element. ▶ Replace the heating element.
XIncorrect functioning of the thermostat ▶ Replace or re-install the thermostat.
X X X X Device incrustation and / or from the
safety group.
▶ Perform a descaling of the appliance.
▶ If necessary replace the safety group.
X X X Hydraulic system pressure. ▶ Verify the system pressure.
▶ If necessary install a pressure
reducing valve.
X X Hydraulic system capacity. ▶ Verify the piping.
XAppliance corrosion. ▶ Drain the appliance and check for
interior corrosion.
▶ Replace the magnesium anode.
X Bacteria development. ▶ Drain and clean the device.
▶Disinfecttheappliance.
XDevice incorrectly dimensioned for the
consumption.
▶ Replace by another, following the
consumption.
Table 7

17Tronic – 6 720 816 255 (2018/06)
Notes

18 Tronic – 6 720 816 255 (2018/06)
Notes

19Tronic – 6 720 816 255 (2018/06)
Notes

Bosch Thermotechnik GmbH
Junkersstrasse 20-24
D-73249 Wernau
www bosch-thermotechnology com