Bosch Therm 4000 S Installation And Operating Instructions Manual page 4

Key to symbols and safety instructions
purposes, and it may only be operated
on an intermittent basis.
Any other type of use is considered as
improper. Any damage that may result is
excluded from liability.
Installation, commissioning and
maintenance
Installation, commissioning and
maintenance may only be carried out by
an approved contractor.
▶ Check all connections on the device
for leaks (gas, water and flue gas).
▶ In the case of open flue operation:
▶ Ensure that the installation location
meets the ventilation requirements.
▶ Only install original spare parts.
Inspection and maintenance
Regular inspection and maintenance are
prerequisites for safe and
environmentally compatible operation
of the heating system.
We recommend arranging an annual
inspection and maintenance contract
with the manufacturer.
▶ Have work carried out only by an
approved contractor.
▶ All defects that are detected must be
eliminated immediately.
Every situation, which does not
correspond to the conditions described
in the manual, must be evaluated by an
approved technician. If there is approval
for this, the contractor must specify a
catalogue of maintenance
4
requirements, which take wear and the
particular operating conditions into
account, and which comply with the
standards and requirements of the
country.
Conversion and repairs
Unprofessional modifications to the
device or other parts of the installation
can result in personal injury and/or
material damage.
▶ Have work carried out only by an
approved contractor.
▶ Never remove the panelling of the
device.
▶ Never carry out any modifications to
the device or to other parts of the
installation.
Electrical work
Electrical work may only be carried out
by qualified and approved electricians.
▶ Before starting electrical work:
– Isolate all poles of the mains
voltage and secure against
reconnection.
– Using suitable means, test that the
power supply is disconnected.
▶ Also observe the connection
diagrams of other system
components.
Open flue operation
The installation location must be
adequately ventilated, if the device
draws its combustion air from the room.
▶ Never cover or reduce the size of
Therm 4000 S – 6 720 815 298 (2017/05)