Explanation of symbols and safety instructions
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AW 4 | 5 | 7 OR-S – 6721866761 (2023/06)
1 Explanation of symbols and safety instructions
1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to
indicate the type and seriousness of the ensuing risk if measures for
minimizing danger are not taken.
The following signal words are defined and can be used in this document:
DANGER
DANGER indicates that severe or life-threatening personal injury will
occur.
WARNING
WARNING indicates that severe to life-threatening personal injury may
occur.
CAUTION
CAUTION indicates that minor to medium personal injury may occur.
NOTICE
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
Table 2
1.2 General safety instructions
These installation instructions are intended for plumbers, heating
system installers and electricians.
▶ Read all installation instructions (heat pump, control system etc)
carefully before installation.
▶ Follow safety and warning instructions.
▶ Follow national and regional regulations, technical regulations and
guidelines.
▶ Document all work that has been performed.
HIntended operation
This heat pump is intended to be used in a closed heating system for
households. All other use is considered unsuitable. Any damage that is
caused by such usage is excluded from liability.
HInstallation, commissioning and service
The heat pump may only be installed, brought into operation and
maintained by authorised personnel.
▶ Use only original spare parts.
HSpecial qualifications for refrigerant R290
Action requiring the product to be opened must only be taken by
personnel with knowledge of the properties of and risks associated with
the refrigerant R290.
Work on the refrigerant circuit and involving equipment with flammable
refrigerants requires special training in addition to standard repair
procedures for refrigerant equipment.
▶ Follow instructions in applicable laws and regulations.
HDanger of fire or explosion of flammable gases
The product contains the flammable refrigerant R290. If a leak occurs,
the refrigerant may form a combustible gas due to mixing with air. There
is a risk of fire and explosion.
▶ When working on the opened product, use a gas detector to ensure
that there is no leakage. The detector must be calibrated for R290
and set to ≤ 25% of the lowest flashpoint.
▶ Make sure that there are no sources of ignition in the vicinity of the
product.
▶ If a R290 leakage is detected, call a R290 qualified technician.
HElectrical work
Electrical work may only be performed by authorised electrical
installers.
Before commencing work:
▶ Disconnect mains voltage on all poles and ensure it cannot
reconnect.
▶ Check to ensure that the power is disconnected.
▶ Also check the connection diagram for other parts of the system.
HConnection to supply mains
Means to safely disconnect the unit from supply mains must be
incorporated.
▶ Install a safety switch that disconnects all poles from supply mains.
The safety switch shall be an over voltage category III appliance.
HHandover to the user
Instruct the user on the usage and operating conditions for the heating
system at handover.
▶ Explain how to use the system and in particular provide information
on all safety-related instructions.
▶ Inform the user that rebuilds and repairs may only be performed by
trained installers.
▶ Inform the user that inspections and maintenance are necessary for
ensuring safe and environmentally-friendly operation.
▶ Supply the user with all the installation and maintenance
instructions.
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document
• a list entry
– a list entry (second level)
Symbol Meaning
Warning of flammable materials. This appliance uses
the flammable refrigerant R290. If the refrigerant is
leaked and exposed to an external ignition source,
there is a risk of fire.
Warning of moving parts. After front cover removal,
moving parts can be accessed. Serious injury to hands
or fingers. Keep hands away from moving parts.
Disconnect power before servicing.
Maintenance by a qualified person should be done
while following the instructions of the service manual.
For operation follow the instructions of the user
manual.
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