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6720856749 (2016/03) CR50
2 | Key to symbols and safety instructions
1 Key to symbols and safety instructions
1.1 Explanation of symbols
Warning symbols
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent the risk
are not taken.
The following keywords are defined and can be used in this
document:
DANGER:
DANGER indicates a situation that will result in severe injury or
death.
WARNING:
WARNING indicates a situation that could result in severe
injury or death.
CAUTION:
CAUTION indicates a situation that could result in minor to
medium injury.
NOTICE:
NOTICE indicates a situation that could result in damage to
property or equipment.
Important information
The info symbol indicates important information where there is
no risk to people or property.
1.2 General safety instructions
H Notice for the target group
These installation instructions are intended for plumbers,
heating engineers and electricians. All instructions must be
observed. Failure to comply with instructions may result in
material damage and personal injury, including possible loss of
life.
Read the installation instructions (heat source, heating
controller, etc.) before installation.
Observe the safety instructions and warnings.
Observe national and regional regulations, technical rules
and guidelines.
H Determined use
Only use the product to control solar heating systems in
single-family homes or apartment buildings.
Any other use is considered inappropriate. We take no
responsibility for damage caused through incorrect use.
H Electrical work
Electrical work must only be carried out by a qualified
electrician.
Before starting electrical work:
Isolate the mains electrical supply and secure against
reconnection.
Using suitable means, test that the mains voltage is
disconnected.
Never connect the product to mains voltage.
Also observe the connection diagrams of other system
components.
2 Product information
The CR 50 user interface is a control unit without an outdoor
temperature sensor.
Information on energy efficiency (ErP Directive) can be found in
the operating instructions.
2.1 Product description
The user interface is used to control a heating circuit without
mixer and a DHW tank charging circuit for water heating directly
at the heat source.
The user interface is not suitable for connecting the DHW
cylinder behind a low loss header.
The user interface is installed in a suitable living space.
Fig. 1 Example of a heating system with one heating zone
and a CR50 as controller (single-family home)
CR 50
0010008714-001
2


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