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Faults
Uni Condens 8000 F – 6720867056 (2016/10)
38
10.4.3 Installations with automatic pressurisation units
For installations in which an automatic pressure maintaining system is
integrated:
Follow the manufacturers' instructions.
Observe water quality requirements ( operator's log).
10.5 Take water samples
WARNING:
Risk of scalding from hot boiler water!
If the water samples are taken without suitable water coolers, there is an
acute risk of scalding.
Use a water sample cooler to take the boiler water sample.
Document the quality of the boiler water and the fill and top-up water in
the operator's log.
The table 21 on page 43 contains the minimum scope of the values and
parameters to be documented.
When taking a boiler water sample, a water sample cooler must be used.
Analysis errors may result from incorrect water samples, or water
samples taken using unsuitable water sample coolers.
Only take water samples under normal system operating conditions, i.e.
not while cold or during start-up. For the analysis, a representative
sample is required which allows cooling of the test water to 25 °C via
suitable cooling means.
11 Faults
11.1 Correcting a burner fault
NOTICE:
System damage due to frost.
When there is a frost, the heating system can freeze up if it is not
operational, e.g. switched off, mains failure or fault shutdown!
Check the "Control unit settings" function to ensure the heating
system remains operational.
When there is a risk of frost, protect your heating system against
freezing up.
If your heating system has been shut down for several days, e.g. due
to a fault shutdown, and there is a risk of frost:
drain the heating water at the DFV. Also leave the air vent at the
highest point in the heating system open.
NOTICE:
System damage from pressing the reset button too frequently.
This can damage the burner ignition transformer.
Press the reset button no more than three times in sequence.
The display shows a fault in the heating system. Further information on
the fault displays can be found in the service instructions of the relevant
control unit. In addition, burner faults are signalled by an indicator on the
burner.
Press burner reset button (see operating instructions of burner and
control).
If the burner still fails to start after three attempts, contact a contractor.
11.2 Other faults
For other possible faults, see the installation and operating instructions
of the control unit.
12 Environmental protection and disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy 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 account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can be
recycled.
Used 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.
Batteries must not be disposed together with your household waste.
Used batteries must be disposed of in local collection systems.
38


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