Bosch Tronic 1000 T User manual

Installation and operating instructions
Electric Storage Water Heater
Tronic 1000T
6720821421-00.1V
6 720 821 421 (2017/04) AU
Please read the installation instructions before installing the appliance!
Please read the operating instructions before commissioning the appliance!
Please observe the safety instructions in the operating instructions!
The installation location must meet the manufacture's requirements!
Installation must only be carried out by an authorised person!

6 720 821 421 (2017/04) Tronic 1000 T
2 | Contents
Contents
1 Key to symbols and safety instructions . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety information . . . . . . . . . . . . . . . . . . . . . 3
2 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Features and general information . . . . . . . . 6
3.3 Technical properties . . . . . . . . . . . . . . . . . . . 8
3.4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4.1 Side Connections . . . . . . . . . . . . . . . . . . . . 10
3.4.2 Top Connections . . . . . . . . . . . . . . . . . . . . . 11
3.5 Electrical wiring diagram . . . . . . . . . . . . . . 11
4 Storing and transportation . . . . . . . . . . . . . . . . . . . . 11
5 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Location requirements and clearances . . . 12
5.2 Water connections . . . . . . . . . . . . . . . . . . . 12
5.2.1 Pressure limiting valve (not supplied with the
appliance) . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2.2 Expansion control valve (not supplied with the
appliance) . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3 Temperature mixing device (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . 13
5.4 PTR Valve connection . . . . . . . . . . . . . . . . . 13
6 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Seismic strapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1 Before commissioning . . . . . . . . . . . . . . . . 15
8.2 Switching the appliance on/off . . . . . . . . . . 15
9 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1 General inspections . . . . . . . . . . . . . . . . . . 16
9.2 Save a service call . . . . . . . . . . . . . . . . . . . . 16
9.2.1 Lack of hot water . . . . . . . . . . . . . . . . . . . . . 16
9.2.2 High hot water usage . . . . . . . . . . . . . . . . . . 16
9.2.3 High electricity bills . . . . . . . . . . . . . . . . . . . 16
9.2.4 Continuous discharge from ECV & PTR valves
17
9.3 Service contact details . . . . . . . . . . . . . . . . 17
10 Maintenance and repair . . . . . . . . . . . . . . . . . . . . . . 17
10.1 Periodic Inspection . . . . . . . . . . . . . . . . . . . 17
10.2 Pressure and temperature relief valve (PTR
Valve) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
10.3 Vacation and Extended Shutdown . . . . . . . 18
10.4 Flushing the water heater . . . . . . . . . . . . . . 18
10.4.1 Draining the water heater . . . . . . . . . . . . . . 18
10.4.2 Flushing the water heater . . . . . . . . . . . . . . 18
10.4.3 Filling the water heater . . . . . . . . . . . . . . . . 18
11 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
12 Environmental protection/Recycling . . . . . . . . . . . 20
13 Warranty details . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6 720 821 421 (2017/04)Tronic 1000 T
Key to symbols and safety instructions | 3
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 Safety information
Installation
▶ The water heater must only be installed by an authorised
person.
Instructing the customer
▶ Do not operate this water heater until all operating
instructions have been read and understood by the
homeowner.
▶ Do not activate this water heater unless the cylinder is filled
with water.
▶ Do not block or seal the relief safety valve or drain pipe.
▶ The water heater warranty can become void if relief valves
or other safety devices are tampered with, or if the
installation is not in accordance with these instructions.
▶ Do not place any articles, chemicals or flammable materials
on or near the water heater.
▶ During the installation isolate the appliance from the power
supply.
▶ Removal of access covers will expose 240V wiring. Do not
remove the terminal box cover unless the power supply has
been effectively disconnected by an authorised person.
▶ Do not operate this water heater with terminal box cover
removed or loose.
▶ This water heater is not intended to be operated or
adjusted by young children or infirm persons. Young
children must be supervised to ensure they do not interfere
with the water heater.
▶ This water heater is intended to be installed as a fixed
appliance and must be installed on a hard, level surface. If
installation is to be in a wet area or a concrete floor, ensure
the water heater is mounted on a suitable and substantial
raised base.
▶ If the electrical conduit to the water heater is damaged, it
must be replaced by an authorised person in order to avoid
a hazard.
▶ For service of this water heater phone the Bosch TT Service
Department on AU 1300 30 70 37, or NZ 0800 543 352.
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
This water heater must be installed in
accordance with:
• Manufacturers Installation Instructions
• AS/NZS 3500.4 “National Plumbing &
Drainage Code”
• AS/NZS 3000 “Wiring Rules”
• Municipal Building Codes
• Any other State or Federal Statutory
Regulations

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4 | Key to symbols and safety instructions
Notice to Victorian Customers from the Victorian Plumbing
Industry Commission
This water heater must be installed by a licensed person as
required by the Victorian Building Act 1993. Only a licensed
professional will give you a Compliance Certificate, showing
that the work complies with all the relevant standards. Only a
licensed person will have insurance protecting their
workmanship.
Make sure you use a licensed person to install this water heater
and ask for your Compliance Certificate
Water temperature warnings
▶ Tomeetregulatoryrequirements the temperatureof stored
water heater must not be less than 60°C.
▶ The thermostat on your water heater is factory pre-set to
65°C which is suitable for the vast majority of domestic
applications.
▶ The thermostat setting can be adjusted between 50°C and
70°C. Adjustment must be made by an electrician or other
suitably qualified trades person.
Hydrogen warnings
General safety warnings
This water heater is fitted with a combination pressure and
temperature PTR relief valve (approved to AS1357), a
thermostat, and a resettable over-temperature cut-out.
▶ It is imperative that all safety devices are not tampered with
as this will void warranty.
WARNING:
Hot water can cause scalds. Children,
disabled and the elderly are at greatest risk.
Scalds from hot water can result in severe
injuries to young children. Feel water
temperature before bathing or showering.
Scalds can occur when children are exposed
directly to hot water when they are placed
into a bath that is too hot.
WARNING:
Additional temperature control or limiting
devices such as tempering valves may be
required to be fitted to this water heater to
meet regulatory requirements.
WARNING:
If the hot water heater is not used for two
weeks or more, a quantity of hydrogen gas,
which is highly flammable, may accumulate
in the water heater. To dissipate this safely,
it is recommended that a non-electrically
operated hot tap be turned on for several
minutes at a sink, or bath, but not at a
dishwasher or other appliance.
During this procedure there must be no
smoking, open flame, or any electrical
appliance operating nearby. If hydrogen gas
is discharged through the tap, it will
probably make a sound like air escaping.
WARNING:
Do not operate this water heater unless all
safety devices are fitted and functioning
normally.
CAUTION:
Failure to operate the relief valve easing gear
at least once every six months may result in
product fault.
It is important that the easing gear on the
valve be raised and lowered very gently.
Failure to do so may result in the water
heater cylinder failing, or faulting under
certain circumstances.
WARNING:
Relief valves should be checked to be in
sound working order at regular intervals not
exceeding 5 years, and more frequently in
areas subject to poor water quality.Checking
should include operation of the relief valveto
remove any lime deposits.

6 720 821 421 (2017/04)Tronic 1000 T
Standard delivery | 5
For your safety:
2 Standard delivery
Fig. 1
[1] Electric Storage Water Heater
[2] Installation Instructions
[3] PTR valve
WARNING:
It is normal that small quantities of water (up
to 15 litres of water in a 24 hour period) are
released by the valve during the heating
cycle.Continuous leakage of water from the
valve may indicate a problem with the water
heater.
If the valve does not discharge water when
the easing gear is operated , or does not seal
again, a service call should be made without
delay.
The PTR valve is not serviceable.
CAUTION:
The activation of the thermal cut-out
indicates a possibly dangerous situation.
▶ Do not reset the thermal cut-out until the
water heater has been serviced by a
qualified person.
1
2
6720821421-02.1V
3

6 720 821 421 (2017/04) Tronic 1000 T
6 | Appliance details
3 Appliance details
3.1 Overview
Fig. 2 Appliance overview
3.2 Features and general information
Your storage electric water heater consists of a vitreous enamel
lined steel cylinder, an internally adjustable thermostat,
a pre-painted zinc-coated steel shell or exterior, an immersion
type element, a sacrificial anode, and a PTR safety valve.
Water is stored within the steel inner tank and is heated to the
thermostat set temperature by the element. The PTR valve
ensures water pressure and temperature does not exceed safe
limits during the heating cycle. As the water is drawn off in
normal every-day use, the thermostat will monitor the tank
temperature and activate the element to ensure hot water is
available.
The tank is a mains pressure tank. It is designed to supply water
at mains pressure (above 350kPa).
If the maximum cold water pressure exceeds 680kPa, a
pressure limiting valve must be fitted.
The sacrificial anode in your water heater (located at the top of
the water heater) will slowly erode to protect the cylinder.
Water heater life expectancy is dependent on a number of
factors including water heater usage patterns, water quality
and water pressure.
Water Quality
This water heater has been designed and constructed to be
suitable for connection to most water supplies in Australia and
The thermostat is factory set at 65°C and is
adjustable from 50°C to 70°C by an
authorised person.
Bosch recommends that the anode be
inspected and replaced every five years or
more frequently in poor water quality areas.
NOTICE: Please refer to the Water Quality
Statement on Page 19, and the Warranty
Details on page 20.

6 720 821 421 (2017/04)Tronic 1000 T
Appliance details | 7
New Zealand. However, in areas where Total Dissolved Solids
(TDS) exceeds 2500mg/L, detrimental effects on water heater
performance and longevity will result.
Anode
Should your water supply have a TDS of greater than 600mg/L,
the installed anode must be aluminium (blue) or hydrogen gas
can accumulate at the top of the water heaterin long periods of
no use. When this is likely to occur, the installer should instruct
the householder on how to dissipate the gas safely. This
process is explained under “Hydrogen warning” on page 4. Any
change of anode must be carried out by an authorised service
person.
Corrosive Water
Water deemed to be corrosive can attack copper parts causing
them to fail. When the water supply Saturation Index (check
with your local water supplier for additional information) is less
than -1.0, water is deemed corrosive and a corrosion resistant
heating element should be used. When the Saturation Index is
greater than +0.40, an expansion control valve must be fitted
on the cold water line after the non-return valve. Should the
Saturation Index exceed +0.80, a low-watts density heating
element should be fitted by an authorised person.
When an ECV is required to be fitted, a small amount of water
may be discharged during the heating cycle rather than the PTR
valve.
IMPORTANT: Where fitted, gently operate the easing lever on
the ECV every six months and replace at intervals not
exceeding 5 years, or more frequently in areas with poor
quality water.
Please refer to the Water Quality Statement on Page 19, and
the Warranty Details on page 20.
Switching off the appliance
If you intend to not use the water heater for only a few days, we
suggest you leave it switched on. If the water heater is to be
switched off, the switch is generally marked and located in the
circuit board or next to the appliance. When the water heater
switch is turned back on, it may take several hours before
sufficient hot water becomes available.
Tariffs
In some regions Off-Peak Tariffs may be available for water
heaters. In these regions water heaters greater than 160L are
suitable for connection to either Continuous or Off-Peak
Tariffs. Where the household requirements for hot water
exceeds the water heater storage capacity, Continuous Tariff is
required. Where hot water demand is less than water heater
capacity, Off-Peak Tariffs may be applicable. Note that Off-
Peak tariff vary from region to region, however are generally
less expensive than Continuous Tariff rates (subject to local
regulations).

6 720 821 421 (2017/04) Tronic 1000 T
8 | Appliance details
3.3 Technical properties
Technical characteristics Unit EWS 080. EWS 125. EWS 160. EWS250. EWS315. EWS 400.
General characteristics
Nominal Delivery l80 125 160 250 315 400
Stored Capacity l 94 141 200 268 337 433
Element rating kWh 1.8/2.4/
3.6
1.8/2.4/
3.6
1.8/2.4/3.6 3.6/4.8 3.6/4.8 3.6/4.8
Water supply data
Water connections RP ¾" / 20mm
Relief valve setting kPa 850
Expansion control valve (ECV) kPa 700
Maximum supply pressure with (ECV) kPa 500
Maximum supply pressure without (ECV) kPa 680
Electrical characteristics
Power supply voltage V240
Thermostat temperature
Temperature range °C 50 °C to 70 °C
Factory set °C 65 °C
General Data
Weight (empty/ unpacked) kg 38 49 62 83 94 114
Outer case material Painted zinc coated steel
Inner tank material Enamel lined steel cylinder
Insulation CFC free polyurethane
Indoor/ Outdoor rating IP X4
Table 2 Technical characteristics (Australian Market)

6 720 821 421 (2017/04)Tronic 1000 T
Appliance details | 9
Technical characteristics Unit EWS 135. EWS 180. EWS260.
General characteristics
Nominal Capacity l135 180 260
Element rating kWh 2.0/3.0 2.0/3.0 3.0/4.0
Water supply data
Water connections RP ¾" / 20mm
Relief valve setting kPa 850
Expansion control valve (ECV) kPa 700
Maximum supply pressure with (ECV) kPa 500
Maximum supply pressure without (ECV) kPa 680
Electrical characteristics
Power supply voltage V 240
Thermostat temperature
Temperature range °C 50 °C to 70 °C
Factory set °C 65 °C
General Data
Weight (empty/ unpacked) kg 48 57 83
Outer case material Painted zinc coated steel
Inner tank material Enamel lined steel cylinder
Insulation CFC free polyurethane
Indoor/ Outdoor rating IP X4
Table 3 Technical characteristics (New Zealand Market)

6 720 821 421 (2017/04) Tronic 1000 T
10 | Appliance details
3.4 Dimensions
3.4.1 Side Connections
Fig. 3 Dimensions in mm (Vertical installation)
Appliance A B C D E
EWS 80... 1060 470 40 854 74
EWS 125... 1511 470 40 1305 74
EWS 160... 1512 540 50 1295 74
EWS 250... 1407 648 96 1161 74
EWS 260... 1407 648 96 1161 74
EWS 315... 1710 648 96 1464 74
EWS 400... 1731 730 116 1464 74
Table 4

6 720 821 421 (2017/04)Tronic 1000 T
Storing and transportation | 11
3.4.2 Top Connections
Fig. 4 Dimensions in mm (Vertical installation)
3.5 Electrical wiring diagram
Fig. 5 Electric circuit diagram
4 Storing and transportation
As a rule, the unit is to be stored and transported in its original
packaging, in an upright position.
Appliance A B C D
EWS 135... 1467 470 40 74
EWS 180... 1408 540 40 74
Table 5
DANGER:
The activation of thermal cut-out indicates a
potentially dangerous situation.
6720821421-04.1V
DANGER:
Do not reset the thermal cut-out until it has
been serviced by an authorised person.
WARNING:
Do not operate this electric storage water
heater without a thermostat and non
self-resetting thermal cut-out in circuit.

6 720 821 421 (2017/04) Tronic 1000 T
12 | Installation instructions
4.1
5 Installation instructions
5.1 Location requirements and clearances
This electric storage water heater can be located outdoors or
indoors and should be installed in a location as follows.
▶ Ensure easy access to the thermostat, terminal box, and
element at the front of the water heater.
▶ Ensure easy access for service of the PTR valve.
▶ Locate the appliance as close as practical to the kitchen or
area of most frequent hot water use.
▶ Foundations must be stable and level. The combined
weight of the complete installation including the water
heater, stored water, and fittings must not affect the
integrity of any structure.
▶ The water heater must be accessible without the use of a
ladder or scaffold.
▶ Adequate provision must be made available for removal of
water that escapes from valves to avoid damage to
property.
▶ Information on the technical label must be able to be read.
▶ If possible, allow for sufficient height above the water
heater for anode removal and replacement.
5.2 Water connections
Cold and hot water connections are RP ¾" / 20mm BSP and
marked "Inlet" and "Outlet" respectively.
As the unit is dual handed, brass plugs are supplied to blank off
unused inlet and outlet fittings. All other fittings must be in
accordance with AS/NZS3500 and local regulatory
requirements
A heat trap must be installed in the hot water line as per AS/
NZS3500 and the hot water lines after the heat trap must be
insulated.
A non-return valve and isolation valve should be installed on the
cold water line of the water heater.It is recommended that a
union be fitted to the cold and hot water connections to allow
easy disconnection of the appliance.
WARNING:
Electric water heaters are heavy and bulky.
Australian States and Territories have a
Principal Occupational Health and Safety
(OH&S) Act which contains requirements
relating to the handling of large, bulky, or
awkward items. Persons installing this
electric water heater system must be aware
of their responsibilities and be adequately
trained and qualified in accordance with
local OH&S requirements
WARNING: Transport damage!
▶ To avoid transport damage, wait until the
appliance is at the installation location to
remove the protective packaging.
▶ Use straps to prevent the appliance from
becoming damaged.
WARNING:
The manufacturer’s warranty does not cover
any damage or defect caused by improper
installation, attachment or use of any type of
accessories (other than those mentioned in
this user manual) with this water heater. The
use of unauthorised energy-saving devices
may shorten the life of the water heater and
may endanger life and/or cause property
damage.
The manufacturer disclaims any
responsibility for such loss and/or injury
resulting from the use of such unauthorised
devices.
CAUTION:
All packaging materials must be removed
from the electric storage water heater prior
to its installation.
CAUTION:
The electric storage water heater should not
be located in an area where leakage of the
tank or water connection will result in
damage to the area adjacent to it or to lower
floors of the structure. A properly drained
safe tray must be used where property
damage could occur from water spillage (see
AS/NZS3500.4.2). Ensure this safe tray
does not become blocked.

6 720 821 421 (2017/04)Tronic 1000 T
Installation instructions | 13
5.2.1 Pressure limiting valve (not supplied with the
appliance)
In installations where the mainswater supply pressure exceeds
that specified for this product, an approved pressure limiting
valve is required and must be fitted.
If the water heater is supplied with low pressure water, below
the minimum working pressure specified for this product, then
a pressure pump should be installed in order to minimize the
forming of air traps in the hydraulic circuit.
5.2.2 Expansion control valve (not supplied with the
appliance)
Local regulations, a saturation index greater than +0.4 or in
corrosive water areas where there are sufficient quantities of
silica dissolved in the water my require the installation of an
expansion control valve (ECV) in the cold water line, being the
last valve installed prior to the water heater.
5.3 Temperature mixing device (not supplied
with the appliance)
Bosch recommends the installation of a temperature limiting
device between the water heater and the hot water outlets
supplying a sanitary outlet, in order to reduce the risk of
scalding.
Additionally, a licensed plumber my have the legal obligaton to
ensure the water heater installation meets the hot water
delivery requirements listed in AS/NZS 3500.4.
5.4 PTR Valve connection
A pressure and temperature relief valve (PTR valve) is supplied
and must be installed in the tank port marked for this purpose.
No valve or accessory of any type should be installed between
the relief valve and the tank. Please observe local codes for the
correct installation of relief valve drains.
The PTR valve thread is RP ½ " / 15mm BSP.
▶ Ensure the valve probe is straight and undamaged.
▶ Carefully apply Teflon tape to the valve, ensuring that the
tape does not extend past the end of the thread.
▶ The drainpipe must be fitted to the relief valve to carry
discharge safely away from the water heater (see AS/
NZS3500.4).
NOTICE: Material damage!
▶ Install a filter at the water inlet in areas
where the water contains particles or
sediments
▶ Where water pipes are attached to the
tank exterior, screws of no longer than
25mm should be used. Any damage to
the tank will not be covered by warranty
WARNING:
Flush out pipes before connecting this water
heater to ensure no foreign matter can block
the valve seat, and use line strainers where
required by local authorities.
CAUTION:
Connections to this water heater must not
be welded, brazed, or soldered
connections. Connect only with
compression or mechanical fittings
WARNING:
Internal dip tubes must not be removed.
WARNING:
An ECV is required where "Scaling" water
exists having a total hardness in excess of
200mg/Litre (expressed as calcium
carbonate), where the saturation index is in
excess of +0.4 as detailed under water
quality, or where required by local
authorities.
WARNING:
Do not break or remove sections of metallic
water tubing used as an earth electrode for
an electrical installation before suitable
precautions have been taken to ensure it is
safe to do so.
WARNING:
This water heater can heat water to
temperatures which can cause scalding.
WARNING:
The pressure rating of the PTR valve must
not exceed 850 kPa. The maximum supply
pressure of the water heater is marked on
the rating plate

6 720 821 421 (2017/04) Tronic 1000 T
14 | Electrical connection
Connect the outlet of the PTR valve to a suitable open drain so
that the discharge water cannot contact any electrical parts,
persons or animals, and to eliminate any other possible risks.
The drain line from the PTR valve must comply with the
requirements of AS/NZS 3500.4.
Always use a PTR valve of the same rated pressure and
temperature as the PTR Valve supplied with the unit.
6 Electrical connection
▶ The electrical connection is made to the water heater at the
terminal block located under the terminal box cover
▶ To remove this cover, simply remove two screws on the
outer casing and lift off the lid
The following must be observed during installation:
▶ Check all connections as wires may work loose in transit
▶ Check the thermostat setting is 65°C, which is the factory
setting, and adjust if required.
▶ Ensure the circuit incorporates an isolation switch or circuit
breaker.
▶ The household wiring to the water heater must be rated to
withstand the electric element load.
NOTICE:
This drain pipe must fall continuously, shall
be left open to the atmosphere, and shall be
in a frost free environment
WARNING:
Relief valve easing gear should be checked
and operated AT LEAST ONCE EVERY SIX
MONTHS.
If water does not discharge freely when the
lever is operated, the valve should be
checked by an authorised agent.
WARNING:
The relief valve and relief valve drain pipe
must not be sealed or blocked. Small
amounts of water may leak from the relief
valve during heating cycles.
WARNING:
Relief valves should be replaced at intervals
not exceeding 5years, or more frequently in
areas where water quality is poor
WARNING:
The function of the PTR valve is to discharge
high temperature water under certain
conditions. Therefore it is strongly
recommended thatthe pipework connected
to the PTR valve is able to withstand water
temperatures exceeding 99 °C. Failure to
follow this recommendation may result in a
dangerous situation
Connection to this storage water heater must
be from a single phase 240V 50Hz supply
and comply with AS/NZS 3000 Wiring Rules.
Installations in New Zealand must comply
with the New Zealand Building Code.
A means for disconnection must be
incorporated in the fixed wiring in
accordance with the wiring rules
The appliance must only be installed by an
authorised person.
DANGER: Electric shock!
▶ Isolate the appliance from the power
supply using the circuit breaker isolation
switch or another electrical protection
device before carrying out any work on
electrical parts.
The electrical enclosure is tested and
approved to IP X4.

6 720 821 421 (2017/04)Tronic 1000 T
Seismic strapping | 15
7 Seismic strapping
New Zealand regulations require storage tanks to be fixed with
seismic strapping as per NZS4603 or NZS4607.
Fig. 6
[A] Extra centre strap for water heaters exceeding 200L
[B] Storage water heaters to be restrained with 25x1
galvanized steel straps tensioned when fixed in place.
Straps to be fixed to wall framing with:
- 1 No. 8 coach screw with 30x2 thick washer, or
-2 No. 20x2.5 thick washers.
Screws to penetrate timber framing a minimum of 50.
[C] 50x50 vertical blocking full height of water heater, fixed
to wall framing with 1 No. 100x3.75 nail at 600
maximum centres
[1] Storage water heating
[2] Light timber frame wall

6 720 821 421 (2017/04) Tronic 1000 T
16 | Commissioning
8 Commissioning
8.1 Before commissioning
▶ Ensure the cylinder is filled with water
▶ Check all connections for water tightness
▶ Check the electrical connection.
8.2 Switching the appliance on/off
Power to this appliance is switched on or off at the isolation
switch on the circuit board, or at a separate isolation switch for
the appliance, if one is installed.
9Service
9.1 General inspections
Check the appliance regularly for faults.
▶ Keep the appliance and the installation location clean
▶ Dust the system regularly using a damp cloth
In this way, leaks can be identified and repaired at an early
stage
▶ Check all connections regularly for water tightness
9.2 Save a service call
In some instances, calling on our service network may be
avoided. Check the following to determine if your water heater
may be returned to operation, without calling a service agent.
9.2.1 Lack of hot water
▶ Ensure that the power to the water heater is switched on at
the circuit board.
Generally, there is an isolating switch marked “Hot Water” or
“Water Heater”. There may also be another isolating switch
near the water heater.
9.2.2 High hot water usage
Generally this is related to increased showering times.
▶ Investigate the installation of water saving devices such as
flow reduction valves or water saving shower roses.
9.2.3 High electricity bills
Generally linked to high hot water usage. However, leaking
valves and pipework may also be responsible, and require
attention from a plumber.
NOTICE: Do not start the appliance without
water!
▶ Only operate the appliance once it has
been filled with potable water.
NOTICE: Damage to the appliance!
Negative temperatures can cause the water
to freeze
▶ Do no switch off the appliance if a frost
threat exists
▶ Drain the appliance completely if the
water heater heat must be switched off
for an extended period of time
DANGER: Electric shock!
▶ Isolate the appliance from the power
supply using the circuit breaker isolation
switch or another protection device
before carrying out any work on
electrical parts
NOTICE: Damage to the appliance!
▶ Do not shut off the water supply while
the appliance is in operation.
Note that repeated failure of the fuse or
circuit breaker indicates a fault and an
authorised service agent should be
contacted to investigate.

6 720 821 421 (2017/04)Tronic 1000 T
Maintenance and repair | 17
9.2.4 Continuous discharge from ECV & PTR valves
Discharges of morethan 15 litres of water in 24 hours indicates
that the valve may not be functioning correctly. This may be
remedied by gently easing the valve lever for a few seconds as
described under Routine Service to dislodge any foreign
matter.
9.3 Service contact details
Bosch has an extensive network of service agents that may be
contacted in event of failure of your water heater.
Please contact AU 1300 30 70 37, NZ 0800 543 352, or
Email hotwater.warrant[email protected].
Ensure that you have copied the Model Number and Date of
Manufacture from the water heater Data label and pass this
information to our service department to ensure prompt
service.
10 Maintenance and repair
10.1 Periodic Inspection
It is recommended that a periodic inspection of the valves,
thermostat, heating elements and wiring should be made by a
service person qualified in electric appliance repair.
Most electrical appliances, even when new, make some sound
when in operation. If the hissing or singing sound level
increases excessively, the electric heating element may require
cleaning. Contact a qualified installer or service agent.
10.2 Pressure and temperature relief valve (PTR
Valve)
At least every 6 months:
▶ Lift and release the lever handle on the PTR valve, to make
certain the valve operates freely.
Allow several litres to flush through the discharge line to an
open drain.
If the valve does not discharge water when the release lever is
opened, or does not seal properly when closed, replacement
by an authorised person must be arranged immediately. The
PTR valve is not serviceable.
CAUTION: Continual flow may also indicate
high water pressure which will require a
pressure limiting valve to be fitted by an
authorised person.
WARNING:
The electric storage water heater should
only be serviced by a qualified person, and in
accordance with the Plumbing Standard AS/
NZS 3500.4 and local authority
requirements.
Routine service will assist in prolonging the
life of your water heater, and help ensure
trouble free operation.
DANGER:
Never replace the PTR Valve with one which
has a higher pressure rating than is specified
for your water heater.

6 720 821 421 (2017/04) Tronic 1000 T
18 | Maintenance and repair
10.3 Vacation and Extended Shutdown
If the water heater is to remain idle for an extended period of
time, the power and water to the appliance should be isolated
to conserve energy and prevent the build up of dangerous
hydrogen gas.
The electric water heater and piping should be drained if they
might be subjected to freezing temperatures. After a long
shutdown period, the water heater’s operation and controls
should be checked by qualified service person.
Make certain the electric water heater is completely filled again
before operating.
10.4 Flushing the water heater
10.4.1 Draining the water heater
▶ Isolate the electrical supply at the main switchboard via the
circuit breaker switch or isolating switch, and then remove
the fuse.
▶ Isolate the cold water supply to the appliance.
▶ Gently raise the lever on the PTR valve to relieve the
pressure in the water heater until flow stops.
▶ Disconnect the cold water connection to the appliance and
attach drain hose.
▶ Operate the lever on the PTR valve again allowing air into
the water heater.
▶ The water heater will drain through the hose.
10.4.2 Flushing the water heater
▶ Complete the draining operation(section 10.4.1) then
disconnect the hot water outlet connection and attach a
water supply hose to the water heater.
▶ Turn on the water supply and allow flow until the water from
the inlet becomes clear.
▶ After the water from the inlet becomes clear, remove the
hose and reconnect the hot and cold water connections.
10.4.3 Filling the water heater
▶ Open all hotwater taps in the house.
▶ Open the cold water isolating valve to the water heater.
▶ Close each tap as water flows freely from it.
▶ Check all piping for leaks.
▶ Reconnect power to the water heater.
Fig. 7
DANGER:
Before manually operating the relief valve,
make certain no one will be exposed to the
hot water released by the valve. The water
drained from the tank may be hot enough to
present a scald hazard and should be
directed to a suitable drain to prevent injury
or damage.
WARNING:
Draining and flushing the water heater must
only be carried out by an authorised service
person.
A regular 5 years service plan by an
authorised person would include: draining
flushing, and refilling the water heater
CAUTION:
Turn off the power supply to the water
heater before draining water.
If you intend on being away from your house
for only a few days, we suggest you leave the
water heater switched on.
Large volumes of water will drain from the
cold water inlet.
▶ Ensure proper drainage of water.

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Water quality | 19
11 Water quality
All Bosch water heating appliances are constructed from high
quality materials and components, and all are certified for
compliance with relevant parts of Australian and New Zealand
gas, electrical and water standards.
This water heater has been designed and constructed to be
suitable for connection to most water supplies in Australia and
New Zealand. However, in areas where Total Dissolved Solids
(TDS) exceeds 2500mg/L, detrimental effects on water heater
performance and longevity will result.
While Bosch water heaters are warranted against
manufacturing defects, the warranty is conditional upon
correct installation and use, in accordance with detailed
instructions provided with the heater. In the case of the water
supplied to the heater, it is important that the water quality be
of acceptable standard.
The water quality limits/parameters listed in the water quality
table (table 6, page 19) are considered acceptable, and
generally Australian and New Zealand suburban water supplies
fall within these limits/parameters.
Where uncertainty exists concerning water quality, intending
appliance users should seek a water analysis from the water
supplying authority. In cases where it is established that the
water supply does not meet the quality requirements of the
water quality table, the Bosch warranty would not apply.
Anode
Should your water supply have a TDS of greater than 600mg/L,
the installed anode must be the “blue” one (aluminium) or
hydrogen gas can accumulate at the top of the water heater in
long periods of no use. When this is likely to occur, the installer
should instruct the householder on how to dissipate the gas
safely. This process is explained on the previous page under
“Safety”. The change of anode must be done by a plumber or
authorised service person.
Corrosive Water
Water deemed to be corrosive can attack parts causing them to
fail. When the water supply Saturation Index (check with your
local water supplier for additional information) is less than -
1.0, water is deemed corrosive and a corrosion resistant
heating element should be used. The effect of scaling water is
the build up of calcium carbonate onto hot metallic surfaces.
When the Saturation Index is greater than +0.40, an expansion
control valve must be fitted on the cold water line after the non-
return valve. Should the Saturation Index exceed +0.80, a low-
watts density heating element should be fitted to your water
heater by your local Bosch authorised service agent.
Water quality table
Maximum levels:
12 Environmental protection/Recycling
Environmental protection is one of the fundamental company
policies of the Bosch Group.
Product quality, efficiency, and environmental protection are
equally important objectives for us. We comply with all
environmental protection laws and regulations.
In order to protect the environment, we use the latest
technologies and the best materials whilst bearing in mind the
economic implications.
Packaging
Where packaging is concerned, we participate in the relevant
local recycling systems in order to ensure optimum recycling.
All of our packaging materials are environmentally friendly and
can be reused.
pH Saturation
Index(LSI)
(langelier)
Total
Hardness
Chlorides Sodium Iron
6.5-9.0 +0.4 to -1.0
at 65 °C
200
mg/l
250
mg/l
180
mg/l
1
mg/l
Table 6

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20 | Warranty details
13 Warranty details
Robert Bosch (Australia) Pty Ltd
Thermotechnology Division
Voluntary Repair or Replacement Warranty
All Bosch products are carefully checked, tested and certified
to Australian and New Zealand standards.
Important Note: Mandatory Australian Consumer Law
statement
If you have purchased your product in Australia, you should be
aware that:
This warranty is provided in addition to other rights and
remedies held by a consumer at law. Our goods come with
guarantees that cannot be excluded under the Australian
Consumer Law. You are entitled to a replacement or refund for
a major failure, and for compensation for any other reasonably
foreseeable loss or damage. You are also entitled to have the
goods repaired or replaced if the goods fail to be of acceptable
quality and the failure does not amount to a major failure.
Important Note: New Zealand law
If you have purchased your product in New Zealand, you should
be aware that:
This warranty is supplemental to any other rights and remedies
you have under the Consumer Guarantees Act 1993 NZ, unless
your purchase is made for commercial purposes, in which case
Bosch excludes all consumer guarantees implied in the
Consumer Guarantees Act 1993 NZ in respect of your product.
Warranty
Bosch warrants, at its option, to repair or replace your water
heater or relevant part thereof (Product) if such Products are
faulty or defective in manufacture or materials during the
warranty period specified below.
The warranty period commences on the date ofpurchase. If the
date of original purchase cannot be determined, then the
warranty period will commence six (6) months after the date of
manufacture stamped on the Product.
Bosch may require evidence to verify the date of purchase.
This warranty only covers repair or replacement of defective
Product (including labour costs where indicated). It does not
cover:
• any costs incurred by the end user in normal or scheduled
maintenance of the Product; or
• subject to any law to the contrary, any damage to property,
personal injury, direct or indirect loss, consequential
losses or other expenses arising from breach of this
warranty. Any end user concerned with this exclusion
should considerthe "Important Note: Mandatory Australian
Consumer Law statement” above.
Warranty Period and Coverage
Bosch will provide warranty service for Product purchased and
installed in Australia and New Zealand as follows.
"Parts & Labour" means free of charge repair and/or
replacement, including labour.
"Parts only" means a replacement tank, free of charge. All
installation and repair labour costs are the responsibility of the
owner.
"Domestic use" warranty period applies to Product installed to
supply hot water for use by individuals in domestic dwellings.
For Product used for all other uses, the commercial use
warranty period will apply. This includes, without limitation,
installations such as centralised or bulk hot systems, hotels,
sporting complexes, caravan parks, laundry facilities,
restaurants and cafes.
For “Parts only” warranty, the end user will be charged for
service call costs and service technician fees in effecting the
replacement.
For valid claims within "Parts & Labour" warranty periods, the
end user will not be charged for costs associated with making a
warranty claim, including service call costs, any service
technician fees or the cost of replacement parts and freight,
provided that:
• the Product is located within the usual operating area of an
authorised service technician;
• the Product has been installed according to the installation
instructions so as to provide adequate service access.
Components The period after purchase within which
the fault must appear
What Bosch will do (see below for
definitions)
Domestic Use (see below for definition)
All components Year [1 to 2] Parts & Labour
Tank Year [2 to 5] Parts only
Commercial Use (see below for definition)
All components Year [1 to 1] Parts & Labour
Table 7