Bosch Uni Condens 8000 F UC8000F Operating Instructions Manual
6720867069 (2016/10) GB/IE
Operating instructions for users
Floor standing condensing boiler
Uni Condens 8000 F
UC8000F 800...1200 kW
Table of contents
Uni Condens 8000 F – 6720867069 (2016/10)
2
Table of contents 1 Explanation of symbols and safety instructions
1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to
indicate the type and seriousness of the ensuing risk if measures for
minimising danger are not taken.
The following signal words are defined and can be used in this document:
DANGER:
DANGER indicates that severe or life-threatening personal injury will
occur.
WARNING:
WARNING indicates that severe to life-threatening personal injury may
occur.
CAUTION:
CAUTION indicates that minor to medium personal injury may occur.
NOTICE:
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
1.2 General safety instructions
H Instructions for the target group
These operating instructions are intended for the
heating system user.
All instructions must be observed. Failure to comply
with instructions may result in material damage and
personal injury, including possible loss of life.
▶ Read and retain the operating instructions (heat
source, heating controller, etc.) prior to operation.
▶ Observe the safety instructions and warnings.
1 Explanation of symbols and safety instructions . . . . . . . . . . . 2
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Determined use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Symbol at the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Permissible fuels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Operation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8 Requirements for the control unit . . . . . . . . . . . . . . . . . . 6
2.9 Burner requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Operation information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Combustion air quality. . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Water quality of the heating water. . . . . . . . . . . . . . . . . . 7
3.3 Using antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Making the heating system operational . . . . . . . . . . . . . 8
4.2 Commissioning the control unit and burner . . . . . . . . . . 8
5 Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Shutting down the heating system.. . . . . . . . . . . . . . . . . 8
5.2 Shutting down the heating system in an
emergency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2 Clean boiler casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.3 Check and correct the operating pressure . . . . . . . . . . . 8
6.3.1 When should you check the operating pressure in
the heating system? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3.2 Sealed unvented systems . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3.3 Installations with automatic pressurisation units. . . . . . 9
6.3.4 Water samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Correct fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.1 Correcting a burner fault . . . . . . . . . . . . . . . . . . . . . . . . 10
8.2 Other faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9 Environmental protection/disposal. . . . . . . . . . . . . . . . . . . . . 10
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document
• a list entry
– a list entry (second level)
Explanation of symbols and safety instructions
3
Uni Condens 8000 F – 6720867069 (2016/10)
H General safety instructions
Failure to observe the safety instructions can result in
serious personal injury and a risk to life as well as
material losses and damage to the environment.
▶ Carry out service work at least once a year. As part
of this, check that the entire system is working
correctly. Defects must be remedied immediately.
▶ Never put your life at risk. Your own safety is
paramount.
▶ Before commissioning the heating system, read
these instructions carefully.
H Risk of damage from operating errors
Operator errors can result in personal injury and
material damage.
▶ Ensure that only personnel who can operate this
appliance correctly have access to it.
▶ Installation and commissioning as well as servicing
and maintenance must only be carried out by an
approved contractor.
▶ Only operate the system when it contains a
sufficient volume of water (operating pressure).
Operation without a sufficient volume of water is
not permitted.
H Safety of electrical devices for domestic use
and similar purposes
The following requirements apply in accordance with
EN 60335-1 in 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 shall 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.”
H Risk through oil leaks
If using oil as fuel, country-specific regulations hold
the operator responsible for asking a contractor to
correct any oil leaks the moment they are discovered.
H If you smell gas
▶ Close gas isolation valve.
▶ Open windows and doors
▶ Do not touch any electrical switch, telephone, and
do not use outlets.
▶ Extinguish any naked flames.
▶ Do not smoke!
▶ Do not use lighters!
▶ Warn all occupants in the building, but do not ring
doorbells.
▶ From outside the building, call your gas supplier
and licensed contractor.
H Danger if you smell flue gas
▶ Switch off the boiler.
▶ Open windows and doors
▶ Notify an approved contractor.
H Risk of electrical shock
Touching live parts can result in an electric shock.
▶ Do not open the product.
▶ Only have the electrical installation carried out by
qualified contractors.
H Installation, conversion and operation
Insufficient ventilation can lead to dangerous flue gas
leaks.
▶ Only have the boiler installed or modified by an
approved heating contractor.
▶ Never modify any parts for flue gas routing.
▶ Ensure that flue pipes and gaskets are not
damaged.
▶ With open flue mode: do not cover or reduce the
size of ventilation apertures in doors, windows or
walls.
▶ Adjustable ventilation flaps are not admissible and
must not be used for permanent ventilation.
▶ With mechanical ventilation, combustion must only
start when the supply air flap is fully open (volt free
checkback signal to the boiler controller via failsafe
limit switch). Provide for control of supply air flaps.
▶ Ensure that the boiler installation location remains
free from the risk of frost.
▶ The heating system must be installed and operated
according to the following laws and guidelines:
statutory ordinances, gas safety regulations, IEE
ordinance, building regulations, local water
ordinance, The Health and Safety at Work Act 1974
and all other local regulations. Chemically
aggressive substances can cause the device to rust,
which would invalidate any warranty claim.
Product Information
Uni Condens 8000 F – 6720867069 (2016/10)
4
H Combustion/room air
▶ Keep the combustion/ambient air free of corrosive
substances (e.g. halogenated hydrocarbons that
contain chlorine or fluorine compounds). This will
help to prevent corrosion.
▶ Keep the combustion air supply free of dust.
H Danger posed by explosive and easily
flammable materials
▶ Never use or store easily flammable materials (e.g.
paper, thinners, paints, etc.) near the appliance.
H Heating system damage due to frost
When the heating system is not in operation (e.g.
controller switched off, fault shutdown), there is a risk
of it freezing when there is frost.
▶ When shutting down or switching off for extended
periods, drain the heating and drinking water pipes
to the lowest point in order to protect the heating
system from freezing.
H Inspection and servicing
▶ Recommendation for customers: Arrange a
maintenance and inspection contract with an
approved contractor, covering an annual inspection
and responsive maintenance.
▶ The user is responsible for ensuring the heating
system is safe and environmentally compatible.
▶ Immediately correct all faults to prevent system
damage!
▶ Use only genuine spare parts from the
manufacturer. Losses caused by the use of spare
parts and accessories not supplied by the
manufacturer are excluded from the manufacturer's
warranty.
H Handover to the user
When handing over, instruct the user how to operate
the heating system and inform the user about its
operating conditions.
▶ Explain how to operate the heating system and draw
the user's attention to any safety relevant action
▶ Explain that conversions and repairs must only be
carried out by a competent person.
▶ Point out the need for inspections and maintenance
for safe and environmentally-compatible operation.
▶ Leave the installation instructions and the
operating instructions with the user for
safekeeping.
2 Product Information
2.1 Declaration of Conformity
The design and operation of this product comply with European
Directives and the supplementary national requirements. Conformity
has been demonstrated by the CE marking.
You can ask for a copy of the declaration of conformity for this product.
For this see the contact address on the back cover of these instructions.
2.2 Determined use
The Uni Condens 8000 F 800...1200 floor standing condensing boiler
has been designed for wet heating systems in (e.g. apartment buildings
or industrial applications).
The boiler is only approved for open-flue mode.
When installing and operating the heating system:
• Comply with standards, regulations and guidelines of the relevant
country.
• Observe the information on the data plate of the boiler.
2.3 Symbol at the boiler
2.4 Data plate
If you contact the manufacturer with any questions about this product,
always provide the details on the data plate. If we have these details, we
can quickly answer your specific query.
The details on the data plate are binding and must be observed!
You will find information such as the serial number, output and approval
details on the data plate.
2.5 Product Description
The Uni Condens 8000 F 800...1200 is a floor standing condensing
boiler with a slim, compact design and a small footprint, comprising a
combustion chamber located at the top and a condensation heating
surface located at the bottom.
With the Uni Condens 8000 F 800...1200 floor standing condensing
boilers, all parts that come into contact with products of combustion or
condensate are made from high grade stainless steel. This makes
operation possible without limitations on the flow and return
temperature, the flow rate or the burner low load.
The Uni Condens 8000 F 800...1200 is also referred to in this manual as
UC8000F 800...1200, boiler or heat source.
The boiler has two separate thermohydraulic return connections for the
high and low temperature heating circuits ( fig. 1, page 5).
The Uni Condens 8000 F 800...1200 must be equipped with a burner
that is suitable for the boiler.
The main components of the boiler are ( fig. 1, page 5):
• Boiler shell [1] in conjunction with a burner
The boiler block transfers the heat produced by the burner to the
heating water.
• Thermally insulating casing
The boiler shell and thermal insulation reduce energy losses.
• Control unit (accessory) [8]
The control unit monitors and controls all electrical boiler
components.
This symbol is used to point out that the installation and
operating instructions must be read prior to installation
operation or maintenance in order to prevent damage to the
system.
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