6720856748 (2016/03) CR50
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 Instructions for the target group
These operating instructions are intended for the heating
system user.
All instructions must be observed. Failure to comply with
instructions may result in material damage and personal injury,
including possible loss of life.
▶ Read and retain the operating instructions (heat source,
heating controller, etc.) prior to operation.
▶ Observe the safety instructions and warnings.
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 Damage caused by frost
The solar system can freeze if it is switched off:
▶ Observe the notices regarding frost protection.
▶ Due to the additional functions, e.g. DHW heating or pump
anti-seizure protection, the system should always be left
on.
▶ Have faults rectified immediately.
H Risk of scalding at the DHW draw-off points
▶ If DHW temperatures above 60 °C are set or if thermal
disinfection is activated, a mixer must be installed. If in
doubt, ask your installer.
2 Product Description
The CR 50 user interface is a control unit without an outdoor
temperature sensor.
2.1 Product data for energy consumption
The specified product data correspond to the requirements of
the EU Regulation No. 811/2013 which supplements ErP
Directive 2010/30/EU. The class of the temperature controller
is required to calculate the central heating energy efficiency of
an integrated system and is for this reason incorporated into
the system data sheet.
Table 1 Product data with regard to energy efficiency of the
user interface
z Delivered condition
1) Classification of the user interface according to EU
Regulation 811/2013 for the labelling of system
packages
2) Contribution to seasonal energy efficiency for central
heating in %
Function of the CR 50 Class
1)
[%]
1),2)
CR 50
Room temperature-
dependent, modulating
V 3.0 z
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