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If the temperature rises above the upper limit or falls
below the lower limit, the outdoor unit is shut down.
You will see a message about this on the heat pump
control unit.
To cover the heat demand for room heating and DHW
heating even outside the specified temperature range,
the heat pump control unit switches on the instantane-
ous heating water heater automatically.
Once the outside temperature is back within the tem-
perature limits, the heat pump is automatically ready
for operation again.
Safety zone
Your outdoor unit contains easily flammable refrigerant
in safety group A3 according to ISO 817 and ANSI/
ASHRAE Standard 34.
A safety zone is defined in the immediate vicinity of the
outdoor unit. Within this zone, special requirements
apply: See page 10.
Service link
The service link provides digital, internet based sup-
port, in which automatically selected information is
transmitted to the Viessmann service control centre,
e.g. system operating data or fault reports. Data pro-
tection information can be found under "viess-
mann.com/servicelink".
With the service link, data transfer is guaranteed for a
period of 5 years from installation of the system. The
right to subsequent use of the service link remains
reserved.
Low power radio
Low power radio is a wireless connection for transfer-
ring data, e.g. via a remote control unit.
Your heating contractor can connect your heat genera-
tor with Viessmann accessories via low power radio.
Licence information
This product contains third party software including
software of "third party components". You are author-
ised to use this third party software subject to compli-
ance with the relevant licensing terms.
Licence information for the programming unit: See
page 44.
For licence information for third party components:
See page 44.
Licence information for the integral communication
module TCU300: See page 46.
Commissioning
The commissioning and matching up of the heat pump
control unit to local conditions and to the structural
characteristics of the building, plus the instruction of
the user in operating the system, must be carried out
by your heating contractor.
Note
These operating instructions also describe functions
that are only available on some heat pump models or
only with accessories. These functions are not specifi-
cally identified.
For questions relating to the scope of and accessories
for your heat pump and your heating system, contact
your contractor.
Introductory information
Product information (cont.)
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