Bosch TRONIC 2000 T Operating manual

User and Installation manual
Electrical storage water tank
Tronic 2000T
TR2000T 10 | 15
6 720 885 113 (2021/08) DIV

2
Index
Tronic 2000T – 6 720 885 113 (2021/08)
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 Appliance Description . . . . . . . . . . . . . . . . . . 5
2.3 Anticorrosion protection . . . . . . . . . . . . . . . . 5
2.4 Accessories (included in the appliance
packaging) . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.5 Specification . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 Appliance layout . . . . . . . . . . . . . . . . . . . . . . 8
2.8 Electrical wiring diagram . . . . . . . . . . . . . . . 8
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Transport, storage and recycling regulations 9
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Important notes . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Siting the appliance . . . . . . . . . . . . . . . . . . . . 9
5.3 Water connection . . . . . . . . . . . . . . . . . . . . 10
5.4 Electrical connections . . . . . . . . . . . . . . . . . 11
5.5 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1 Turning the appliance on/off . . . . . . . . . . . 12
6.2 Setting the DHW temperature . . . . . . . . . . 12
6.2.1 „Anti-Frost“-mode - . . . . . . . . . . . . . . . . . . . 12
6.3 Emptying the appliance . . . . . . . . . . . . . . . 12
7 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . 13
8 Inspection/Maintenance . . . . . . . . . . . . . . . . . . . . . 13
8.1 User information . . . . . . . . . . . . . . . . . . . . . 13
8.1.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.1.2 Safety valve verification . . . . . . . . . . . . . . . 13
8.1.3 Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.1.4 Maintenance and repair . . . . . . . . . . . . . . . 13
8.2 Periodic maintenance work . . . . . . . . . . . . 13
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 Inside of the tank . . . . . . . . . . . . . . . . . . . . . 15
8.5 Required actions after any maintenance
work has been carried out . . . . . . . . . . . . . .16
9 Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9.1 Problem/Cause/Solution . . . . . . . . . . . . . . 17

3
Key to symbols and safety instructions
Tronic 2000T – 6 720 885 113 (2021/08)
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 resultin 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.
Installation and conversion
▶ Only permit an authorised service to
install this appliance.
▶ Never obstruct the safety valve outlet.
▶ The drain line from the pressure relief
valve must be installed downwards in
a frost-free location and it must also
remain open to the atmosphere.
▶ 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 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.
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.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
•Listentry
–List entry (second level)
Table 1

4
Key to symbols and safety instructions
Tronic 2000T – 6 720 885 113 (2021/08)
Instructing the customer (for the
installer)
▶ Instruct the customer in the function
and operation of this appliance.
▶ It is the responsibility of customers to
carry out regular maintenance and
inspections.
▶ The appliance must be serviced
annually.
▶ Inform customers that they must not
carry out any modifications or
repairs.
Safety of electrical appliances for
domestic use and similar purposes
The following requirements apply in
accordancewithEN60335-1inorderto
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.”

5
Technical Characteristics and dimensions
Tronic 2000T – 6 720 885 113 (2021/08)
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.
Only use adequate solar liquid in the heat exchanger coil (if
present).
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 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
•Easyhandling
• Insulating material: polyurethane without CFC
• Anticorrosion protection: magnesium anode.
2.3 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.
2.4 Accessories (included in the appliance
packaging)
Fig. 1
[1] Hook (2x)1)
[2] Sleeve (2x)1)
[3] Safety valve (8 bar)
[4] Galvanic insulator (2x)1)
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
1) available in some models (depending on the market)
6720801526-01.2V
3
1
2
4

6
Technical Characteristics and dimensions
Tronic 2000T – 6 720 885 113 (2021/08)
2.5 Specification
This appliance meets the requirements specified by the
European Directives 2014/35/EC and 2014/30/EC.
Technical characteristics Unit TR2000T 10 TR2000T 15
General characteristics
Capacity l10 15
Weight (empty) kg 7,7 9,4
Weight when full kg 17,7 24,4
Water details
Maximum permissible pressure bar 8
Water connections Pol. 1/2
Electrical characteristics
Nominal power W 1500 1500
Heating time (T- 50 °C) 0 h 23 min 0 h 35 min
Voltage VAC 230
Frequency Hz 50
Monophasic electric current A 6,5 6,5
Power cable (with plug) HO5VV - F 3 x 1,0 mm2or HO5VV - F 3 x 1,5 mm2
Protection class I
Type of protection IPX4
Water temperature
Temperature ranges °C until 70 °C
Table 3 Technical characteristics

7
Technical Characteristics and dimensions
Tronic 2000T – 6 720 885 113 (2021/08)
2.6 Dimensions
Fig. 2 Dimensions in mm (wall mounting)
Fig. 3
Appliance A B C D
TR2000T 10 406 372 100 257
TR2000T 15 406 372 100 324
Table 4
A
C
6720821791-02.1V
G1/2"
G1/2"
B
D
min. 96 mm
max. 114 mm
8mm
6720810908-03.1V

8
Technical Characteristics and dimensions
Tronic 2000T – 6 720 885 113 (2021/08)
2.7 Appliance layout
Fig. 4 Appliance composition
[1] Tank
[2] Insulating material: polyurethane without CFC
[3] Heating element
[4] Hot water outlet ½ ” male
[5] Cold water inlet½ ” male
[6] Magnesium anode
[7] Thermal cut out
[8] Thermostat
2.8 Electrical wiring diagram
Fig. 5 Electric circuit diagram
1
2
76
3
45
6720821791-01.V2
8

9
Regulations
Tronic 2000T – 6 720 885 113 (2021/08)
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.
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 for the installation location
▶ Observe country-specific requirements.
▶ The appliance must not be installed on a heat source,
exposed to the elements or in corrosive environments.
▶ Install the DHW cylinder in rooms where the temperature
does not below 0 °C.
▶ Only install the appliance in locations with ease of access
for the purposes of maintenance.
▶ Install the DHW cylinder close to the most frequently used
hot water tap in order to reduce heat loss and wait time.
▶ Install the DHW cylinder in a room that allows the
magnesium anode to be replaced and the necessary
maintenance to be performed.
Protection areas 1 and2
▶ Do not install in protection areas 1 and 2.
▶ Install the appliance outside the protection areas at a
distance greater than 60 cm, of the bath.
Fig. 6 Protection areas
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.
▶ Never rest the appliance on the water
connections.
▶ Wherever applicable, comply with the
IEC 60364-7-701 norm on installing the
appliance and / or any electric
accessories.
▶ Chose a sufficiently robust wall to
support the appliance with the tank full,
see page 6.
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,
see page page 6.
CAUTION:
▶ Make sure that the appliance is
connected to the DB board (electrical
board) with a connection to the earth
cable.
225 cm
6 720 612 659-13.3TT
22 11
60 cm
60 cm

10
Installation
Tronic 2000T – 6 720 885 113 (2021/08)
5.3 Water connection ▶ Identify the piping for hot and cold water, in order to avoid
a possible swop (Fig. 7 and 8).
Fig. 7 Installation above the sink
[1] Cold water inlet (right hand side)
[2] Hot water outlet (left hand side)
Fig. 8 Installation under the sink
[1] Cold water inlet (right hand side)
[2] Hot water outlet (left hand side)
CAUTION: 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.
NOTICE: Material damage!
▶ So as to avoid corrosion, colour and
odour in the water, take into account the
information in table 2 with the drinking
water requirements in addition to the
possible need to adjust the installation
to the type of water (for example, adding
filtering systems or changing the supply
source).
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.
6720821785-01.1V
1
2
2
1
6720821785-02.1V

11
Installation
Tronic 2000T – 6 720 885 113 (2021/08)
▶ Use the appropriate connection accessories to do the
hydraulic connection to the appliance.
Fig. 9 Water connection
Fig. 10 Water connection
[1] Galvanic insulation
[2] Discharge valve
[3] Non-return valve
[4] Reducer valve
[5] Shut-off valve
[6] Drainage connection
[7] Expansion vessel
[8] Mixing valve
In the case of freezing:
▶ Switch off the appliance.
▶ Purge the appliance (chapter 6.3).
-or-
▶ Do not disconnect the appliance from the electric current.
▶ Select the lowest water temperature.
Safety valve
5.4 Electrical connections
All adjusting devices, verification and safety mechanisms were
submitted to a rigorous test in factory and are ready to work.
In order to avoid problems caused by sudden
pressure changes, we recommend the
installation of a non return valve at the
appliance
DANGER:
▶ Install a safety valve at the water inlet of
the appliance (Fig. 9 and 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.
If the water inlet pressure is between 1.5 and
3 bar, it is not necessary to install a pressure
reducing valve.
If the water inlet pressure is above these
values, it is necessary
▶ to install a pressure reducing valve
(Fig. 9, 10, [4]). The pressure relief
valve will activate whenever the water
pressure in the appliance is above 8 bar
(± 1 bar), for which reason it is
necessary to plan a way of draining off
this water.
▶ install an expansion vessel (Fig. 9, 10,
[7]) to stop the pressure relief valve
opening so frequently. The volume of the
expansion vessel should be equivalent to
5% of the volume of the appliance.
DANGER:
By electrical discharge!
▶ Before working on the electrical
components, firstly cut the power,
(fuse, circuit breaker or other).

12
Use
Tronic 2000T – 6 720 885 113 (2021/08)
▶ Connect the appliance via a socket with earth connection.
5.5 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
out of the connections.
▶ 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.
6Use
Fig. 11 User interface
[1] Operating light
[2] On / Off switch
[3] Temperature selector
6.1 Turning the appliance on/off
Turn on
▶ Switch to „I“.
Turn off
▶ Switch to „0“.
6.2 Setting the DHW temperature
The water outlet temperature can be regulated until 70 °C.
Increasing the temperature
▶ Turn the temperature selector to the right.
Decreasing the temperature
▶ Turn the temperature selector to the left.
6.2.1 „Anti-Frost“-mode -
In this mode, the hot water tank always starts, when the
temperature inside the hot water tank reaches 5 °C.
▶ Switch to „-“.
6.3 Emptying 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. 12).
CAUTION:
Electrical protection!
▶ The appliance should dispose of an
independent connection to the DB
board (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.
2 3
1
6720821791-03.V2
CAUTION: The first start-up of the appliance
must be carried out by an authorized
technician, which will provide the user with
all the necessary information to the best
working and handling of the device.
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.
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.

13
Environment / disposal
Tronic 2000T – 6 720 885 113 (2021/08)
▶ Wait until the appliance is completely empty.
Fig. 12 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.
8 Inspection/Maintenance
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.
12).
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 parts
catalogue for the appliance.
▶ When carrying out maintenance work change the
disassembled joints and replace these with new ones.
6720643873-06.1V
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. 9).

14
Inspection/Maintenance
Tronic 2000T – 6 720 885 113 (2021/08)
8.2.1 Functionality verification
▶ Verify the good working order of all the elements.
8.2.2 Magnesium Anode
▶ Before starting, verify that the appliance is disconnected
from the electric current.
▶ Completely drain the appliance (Chapter 6.3).
▶ Remove the lid of the appliance.
Fig. 13
▶ Switch off the circuit breaker feeding the appliance.
▶ Disconnect the connecting cables to the thermostat
▶ Loosen the fastening screws of the flange [1].
▶ Remove the flange [2].
▶ Verify the magnesium anode [3] and replace it if necessary.
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
Tronic 2000T – 6 720 885 113 (2021/08)
Fig. 14 Access and identifying internal components
[1] Fastening screw
[2] Flange
[3] Magnesium anode
[4] Safety thermostat
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, by
turning temperature knob clockwise until it stops (
Fig. 11, [4]).
▶ 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.
8.4 Inside of the tank
The storage of water at high temperatures and the
characteristics of the water itself can cause a layer of scale to
build up on the surface of the electric heater and/or the
accumulation of detritus in the interior of the tank, affecting
mainly:
• water quality
•powerconsumption
• appliance functionality
•applianceservicelife
Amongst other things, the abovementioned consequences
lead to a lower thermal transfer between the heater and the
water, causing the thermostat to start/stop more frequently,
higher power consumption and potential safety activation if
temperature limits are breached (manual resetting of
thermostat necessary).
DANGER: Burn risk!
During the periodic cleaning process the hot
water may cause serious burns.
▶ Carry out this operation outside working
hours.
3
4
1
2
6720821791-04.V2
After a long period of inactivity you should
change the water inside the appliance (more
than 3 months).
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. 14, [4]).
If the safety thermostat is activated on a
frequent basis:
▶ ensure more regular cleaning of the
electric heater.

16
Inspection/Maintenance
Tronic 2000T – 6 720 885 113 (2021/08)
For optimal functioning, the following recommendations are
made:
▶ Clean the interior of the tank.
▶ Clean the electric heater (descale or replace).
▶ Inspect the magnesium anode.
▶Replacethesealingcollar of the flange.
8.5 Required actions after any maintenance work
has been carried out
▶ Refasten and check the fastness of all the water
connections.
▶ Turn on the appliance.
The abovementioned interventions are not
covered by the appliance warranty.

17
Problems
Tronic 2000T – 6 720 885 113 (2021/08)
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 Reason Remedy
Domestic Cold Water Very hot water Insufficient capacity Continuous drain from the pressure relief valve Rust-colored water Water with a bad odour Noises in the DHW cylinder
XOvervoltage or the safety switch was triggered
(performance too high).
▶ Check whether the cable of the device is
designed to supply the required power.
X X Incorrect temperature set by the temperature
regulator.
▶ Adjust the temperature regulator.
XHigh limit safety cut-out triggered. ▶ Confirm that the thermostat is correctly
inserted into the phial pocket.
▶ Reset the thermostat (section 8.3).
▶ Assess maintenance needs (for example,
descaling the electrical heater, removal of
dirt).
X Defective heating element. ▶ Exchange the heating element.
XIncorrect operation of the temperature limiter. ▶ Replace the temperature limiter or install a
new one.
X X X X Scale on the DHW cylinder and/or the safety
group.
▶ Remove scale.
▶ Assess the need for more frequent
maintenance or water treatment if caused
by elevated water hardness.
▶ If necessary replace the safety group.
X X X Water pressure in the system. ▶ Check the system water pressure.
▶ If necessary, install a pressure reducer
(Fig. 9).
▶ Confirm the need for an expansion vessel
(pre-load 0.5 bar below Pmax).
X X Capacity of the water supply network. ▶ Check piping.
Table 5

18
Problems
Tronic 2000T – 6 720 885 113 (2021/08)
XInside of storage tank with accumulated dirt. ▶ Drain the appliance and clean the inside.
▶ Assess the water supply (for example,
apply a filter).
▶ Carry out maintenance and re-fill the tank.
X Bacterial contamination. ▶ Drain the DHW cylinder and clean it.
▶ Disinfect the DHW cylinder.
X X Possible re-circulation system for drinking
water, excessive consumption from water taps
or leak in the hot water system.
▶ Assess time necessary for reheating
(Tab. 3).
▶ Replace the product with one that has
sufficient capacity.
Problem Reason Remedy
Table 5

19
Problems
Tronic 2000T – 6 720 885 113 (2021/08)

ROBERT BOSCH TUNISIE
Imm. Omrane 3eme etage
Rue lac Leman, Les Berges du Lac
1053Tunis
Tunisie
Tel: [phone]
Fax: [phone]
ROBERT BOSCH EGYPT LLC
Cairo, Heliopolis
22 Kamal Eldin HussienSt., 1st floor
Egypt
ROBERT BOSCH LTD.
52/54Isaac JohnStreet,
Ikeja, GRA, Lagos
Nigeria.
Tel: [phone]
ROBERT BOSCH EAST AFRICA LTD.
4th floor, FedhaPlaza
P.o Box856-00506
Westlands. Nairobi
Kenya
Tel: [phone]
Fax: [phone]
ROBERT BOSCH LIMITADA
Largo 17 de Setembro n.3
Presidente Business Center 4Andar
Escritorio 429 Luanda
Angola
ROBERT BOSCH PTY (LTD)
15th Road, Randjiespark
1685 Midrand
South Africa
Tel: [phone]
Fax: [phone]
http://www.bosch-climate-africa.com