Guideline to symbols and safety instructions
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5
6 720 643 068 (2011/06)
Copyright (optional information)
Danger of explosion of flammable gases.
B
Only employ a trained and certified contractor to carry
out work on the gas train.
Installation and conversion
Only have the appliance installed or modified by a trained
and certified heating contractor.
Always follow state of the art construction techniques for
installation and maintenance, and observe all applicable
codes and regulations.
Never modify any parts that carry flue gas.
Only trained and certified contractors are permitted to
carry out electrical work. Follow applicable code.
The DHW tank may only be used for heating domestic hot
water.
Never close the outlet of safety valves. Water may be
expelled from any safety valve during heat-up.
Inspection and maintenance
The operator is responsible for the safety and
environmental compliance of the heating system.
It is recommended to arrange a maintenance and
inspection contract with a trained and certified
contractor, covering an annual inspection and demand-
dependent maintenance. This guarantees high efficiency
and environmentally sound combustion.
Do not attempt to repair parts that have built in safety
features. Always replace the part.
Only use original Bosch spare parts. Bosch does not
accept responsibility for damage caused by third party
spare parts.
Perform maintenance annually. Check the complete
heating system for defects and malfunction.
Mitigate defects immediately to avoid larger scale system
damage.
To prevent damage to the appliance or the system from
descaling agents, remove parts to be descaled during the
process.
Explosive and easily combustible materials
Never use or store easily combustible materials (paper,
thinners, paints, etc.) near the appliance.
Combustion air/room air
B
To prevent corrosion, keep the supply of combustion/
room air free of corrosive substances (e.g. halogenated
hydrocarbons that contain chlorine or fluorine
compounds).
B
Avoid drawing in combustion air from outdoors that is
excessively loaded with dust or airborne particles.
Install adequate air filters under the following
circumstances:
–
Air supply is contaminated with dust from dirt roads
and paths.
–
Air supply is contaminated with dust from production
and processing facilities, e.g. quarries, mines, etc.
–
Airborne seeds from thistles and similar plants.
–
Halogen-hydrocarbon compounds, e.g. from paint
booths or hair salons.
Risk of system damage due to unsuitable fill water
Risk of system damage due to corrosion or scale formation
as the result of using fill and top-up water that does not
conform to the system-specific requirements.
Risk of system damage from freezing
The heating system can freeze up and burst in cold
weather if it is shut down or locked out.
B
Leave the heating system turned on as much as
possible.
B
Protect a disabled heating system from freezing by
draining the boiler and water pipes at the lowest point.
