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14
Environmental responsibility/disposal
Environmental responsibility is one of the fundamental company
policies of the Bosch Group.
We regard quality of performance, economy and environmental
responsibility as equal objectives. Environmental protection laws and
regulations are strictly adhered to.
To protect the environment, we use the best possible technology and
materials taking into account economic points of view.
Packaging
All packaging materials used are environmentally-friendly and
recyclable.
Old appliances
Old appliances contain resources that must be submitted for recycling.
The components are easy to separate and the plastics are marked. This
allows the various components to be sorted for appropriate recycling or
disposal.
15
Inspection and maintenance
Annual service and maintenance is required for a long service life of the
appliance, for efficient and economical operation, and to keep the
environmental impact as low as possible. Owners/operators are
encouraged to sign a service and maintenance contract with a trained
and certified installer for annual servicing and maintenance of the boiler.
DANGER: Explosion!
▶ Close the gas cock prior to working on the gas train.
▶ Check for gas leaks after carrying out work on the gas
train.
DANGER: Risk of flue gas poisoning.
▶ Check for leaks after carrying out work on the venting
system.
DANGER: Risk of electric shock!
▶ Always disconnect the appliance from the mains
power before performing any work. Disconnect the
emergency shutoff switch or disengage the heating
system circuit breaker. Take measures to prevent
accidental re-connection.
NOTICE: Insufficient antifreeze can accelerate
corrosion.
▶ Frost protection level has to be checked annually
during the regular scheduled maintenance of the
condensing boiler.
Heat exchanger
NOTICE: Damage to the coating of the heat exchanger.
▶ Cleaning of the heat exchanger should not be
necessary until five years after the initial
commissioning.
▶ Only use a Bosch cleaning blade or Bosch cleaning
brush (page 68).
▶ Only clean heat exchanger if soiling is clearly visible.
Heatronic boiler control
In case of a component defect, a fault is shown on the display.
Greenstar FS
Environmental responsibility/disposal | 65
The Heatronic boiler control monitors all safety and control
components.
NOTICE: The Heatronic boiler control can be damaged
by leaking water.
▶ Cover the Heatronic prior to working on water filled
components.
Notes on installation and operation
An overview of the faults can be found on page 74.
• The following analytical tools are needed for service and
maintenance:
– Electronic flue gas analyzer for CO
temperature
– Pressure gauge 0 to 12 inches W.C. (0 to 30 mbar)
– pH Test strips
– Glycol tester of antifreeze is being used
• Special tools are not required.
• Approved lubricants are:
– For parts touched by water: Unisilkon L 641
(part-# 8 709 918 413 0)
– or fittings: HFt 1 v 5 (part-# 8 709 918 010 0).
▶ Use part-# 8 719 918 658 0 as heat conducting paste.
▶ Use only genuine Bosch spare parts.
▶ Request spare parts ( Section 19, page 80).
▶ Replace removed gaskets and O-rings with new ones.
After the inspection/maintenance
▶ Re-tighten all loosened threaded connections.
▶ Restart the appliance ( page 49).
▶ Check all connections for leaks.
▶ Check the gas-air ratio and adjust if necessary ( page 63).
15.1
Description of various steps
15.1.1 Calling up the latest fault (service function 6.A)
▶ Select service function 6.A ( page 60).
An overview of the faults can be found on page 74.
15.1.2 Fresh water filter (only combi boiler KWB..-3A)
▶ Close cold water tap.
▶ Depressurize the cold water pipe.
▶ To access the filter remove the safety clip (step 1), pull out the pipe
(step 2), and remove the filter from the pipe (step 3).
▶ If necessary, clean with plastic brush under running water.
, O
, CO, and flue gas
2
2
6 720 810 590 (2015/05)
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