Bosch 7716500256 User Manual
Installation and operating instructions
6720821421-00.1V
Electric Storage Water Heater
Tronic 1000T
6 720 821 421 (2017/10) AU
Contents
Contents
1 Key to symbols and safety instructions . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety information . . . . . . . . . . . . . . . . . . . . . 3
2 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Features and general information . . . . . . . . 8
3.3 Technical properties . . . . . . . . . . . . . . . . . . 10
3.4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1 Side Connections . . . . . . . . . . . . . . . . . . . . 12
3.4.2 Top Connections . . . . . . . . . . . . . . . . . . . . . 13
3.5 Electrical wiring diagram . . . . . . . . . . . . . . 13
4 Storing and transportation . . . . . . . . . . . . . . . . . . . . 13
5 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Location requirements and clearances . . . 14
5.2 Water connections . . . . . . . . . . . . . . . . . . . 14
5.2.1 Pressure limiting valve (not supplied with the
appliance) . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2.2 Expansion control valve (not supplied with the
appliance) . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.3 Temperature mixing device (not supplied with
the appliance) . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 PTR Valve connection . . . . . . . . . . . . . . . . . 15
9.2.3 High electricity bills . . . . . . . . . . . . . . . . . . . 18
9.2.4 Continuous discharge from
ECV & PTR valves . . . . . . . . . . . . . . . . . . . . .19
9.3 Service contact details . . . . . . . . . . . . . . . . 19
10 Maintenance and repair . . . . . . . . . . . . . . . . . . . . . . 19
10.1 Periodic Inspection . . . . . . . . . . . . . . . . . . . 19
10.2 Pressure and temperature relief valve
(PTR Valve) . . . . . . . . . . . . . . . . . . . . . . . . . .19
10.2.1 Vacation and Extended Shutdown . . . . . . . 19
10.3 Flushing the water heater . . . . . . . . . . . . . . 19
10.3.1 Draining the water heater . . . . . . . . . . . . . . 20
10.3.2 Flushing the water heater . . . . . . . . . . . . . . 20
10.3.3 Filling the water heater . . . . . . . . . . . . . . . . 20
11 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
12 Environmental protection/Recycling . . . . . . . . . . . 21
13 Warranty details . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Seismic strapping . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.1 Before commissioning . . . . . . . . . . . . . . . . 18
8.2 Switching the appliance on/off . . . . . . . . . . 18
9 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.1 General inspections . . . . . . . . . . . . . . . . . . 18
9.2 Save a service call . . . . . . . . . . . . . . . . . . . . 18
9.2.1 Lack of hot water . . . . . . . . . . . . . . . . . . . . . 18
9.2.2 High hot water usage . . . . . . . . . . . . . . . . . . 18
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Tronic 1000 T – 6 720 821 421 (2017/10)
Key to symbols and safety instructions
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
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.
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 tha t 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
This symbol indicates important information
where there is no risk to people or property.
Additional symbols
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
•List entry
– List entry (second level)
Table 1
1.2 Safety information
Installation
▶ The water heater must only be
installed by an authorised person.
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
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.
Tronic 1000 T – 6 720 821 421 (2017/10)
3
Key to symbols and safety instructions
▶ 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 Hot Water Service
Department on AU 1300 30 70 37, or
NZ 0800 543 352.
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
▶ To meet regulatory requirements the
temperature of 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.
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
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Tronic 1000 T – 6 720 821 421 (2017/10)
Key to symbols and safety instructions
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.
Hydrogen warnings
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.
Tronic 1000 T – 6 720 821 421 (2017/10)
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 overtemperature cut-out.
▶ It is imperative that all safety devices
are not tampered with as this will void
warranty.
5
Key to symbols and safety instructions
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.
For your safety:
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.
WARNING:
Relief valves should be
checked and replaced at
regular intervals not
exceeding 5 years, and
more frequently in areas
subject to poor water
quality.Checking should
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.
include operation of the
relief valve to remove any
lime deposits.
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Tronic 1000 T – 6 720 821 421 (2017/10)
2 Standard delivery
1
2
6720821421-02.1V
3
Standard delivery
Fig. 1
[1] Electric Storage Water Heater
[2] Installation Instructions
[3] PTR valve
Tronic 1000 T – 6 720 821 421 (2017/10)
7
Appliance details
3 Appliance details
3.1 Overview
Fig. 2 Appliance overview - Australian
8
Tronic 1000 T – 6 720 821 421 (2017/10)
Fig. 3 Appliance overview - New Zealand
Appliance details
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 thermostat is factory set at 65°C and is
adjustable from 50°C to 70°C by an
authorised person.
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.
Tronic 1000 T – 6 720 821 421 (2017/10)
Bosch recommends that the anode be
inspected and replaced every five years or
more frequently in poor water quality areas.
Water heater life expectancy is dependent on a number of
factors including water heater usage patterns, water quality
and water pressure.
NOTICE: Please refer to the Water Quality
Statement on Page 21, and the Warranty
Details on page 22.
Water Quality
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.
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 heater in long periods of
no use. When this is likely to occur , the installer should instruct
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