Key To Symbols And Safety Instructions; Key To Symbols; Safety Regulations; Product Information - Bosch CFB 840 Servicing Instructions

4 | Key to symbols and safety instructions

1 Key to symbols and safety instructions
1.1

Key to symbols

Warnings
Warnings in this document are framed and identified by
a warning triangle printed against a grey background.
Keywords at the start of a warning indicate the type and severity of the
ensuing risk if measures to prevent the risk are not taken.
• NOTE indicates that material losses may occur.
• CAUTION indicates possible minor to medium personal injury.
• WARNING indicates possible severe injury.
• DANGER indicates that severe personal injury may occur.
Important information
Important information in cases where there is no risk of
personal injury or material losses is identified by the
symbol shown on the left. It is bordered by horizontal
lines above and below the text.
Additional symbols
Symbol Meaning
a step in an action sequence
B
a reference to a related part in the document or to other
related documents
a list entry
•
a list entry (second level)
–
Table 1
1.2

Safety regulations

General safety instructions
Failure to observe the safety instructions can result in serious injuries
and a risk to life as well as material losses and damage to the
environment.
B Ensure that only a qualified contractor carries out installation,
connection of exhaust system, commissioning, maintenance and
service.
B Carry out maintenance at least once a year. As part of this, check that
the entire system is working correctly. Immediately remedy all defects
found.
B Read the safety instructions carefully prior to commissioning the
system.
Original spare parts
Losses caused by the use of spare parts not supplied by the
manufacturer are excluded from the manufacturer's warranty.
B Use only original spare parts and accessories from the manufacturer.
Risk of scalding
There is a risk of scalding if the required DHW temperature is set higher
than 60 °C.
B Do not draw off DHW unmixed.
6 720 802 836 (2012/05)
Damage due to operator error
Operator errors can result in injury and damage to property.
B Ensure that children never operate this appliance unsupervised or
play with it.
B Ensure that only personnel who can operate this appliance correctly
have access to it.
B Installation and commissioning as well as servicing and maintenance
must only be carried out by a qualified contractor.
B Before unpacking the device touch a radiator or an earthed metal
water pipe to discharge any electrostatic charge in your body.
Risk of death from electric shock
B Ensure that any electrical work is only carried out by an approved
electrician.
B Observe the relevant requirements when working on electrical
installations.
B Ensure that a circuit breaker in accordance with applicable standards
is present to disconnect all poles from the mains power supply. If
there is no circuit breaker, you will need to install one.
B Before opening the control unit, isolate all poles of the heating system
via the circuit breaker. Secure against unintentional reconnection.
System damage through frost
When the heating system is switched off, it can freeze up if there is frost.
B Protect your heating and water system against freezing by draining
the heating system and hot water pipes at the lowest point.
2

Product information

These service instructions contain important information on the safe and
appropriate commissioning and servicing of the CFB 840 control unit.
These service instructions are designed for heating contractors, who,
due to their vocational training and experience, –are knowledgeable in
handling heating systems and water installations. Only carry out
servicing if you have such specialist knowledge and skills.
Explain to the customer the function and operation of the appliance.
2.1

Determined use

The CFB 840 control unit is designed to control heating systems in
detached houses, apartment buildings, residential complexes and other
buildings.
2.2

EU Declaration of Conformity

The design and operation of this product conforms to the European
Directives and the supplementary national requirements. Its conformity
is confirmed by the CE designation.
You can view the Declaration of Conformity on the internet or request a
copy from your local office.
CFB 840