2 Notes on the documentation
102 Operating instructions aroTHERM plus 0020297937_01
2 Notes on the documentation
2.1 Documents
▶ Always observe all operating instructions enclosed with
the installation components.
▶ Store these instructions and all other applicable docu-
ments for further use.
2.2 Validity of the instructions
These instructions apply only to:
Product
VWL 45/6 A 230V S3
VWL 55/6 A 230V S3
VWL 65/6 A 230V S3
VWL 85/6 A 230V S3
VWL 125/6 A 230V S3
VWL 125/6 A S3
VWL 155/6 A 230V S3
VWL 155/6 A S3
3 Product description
3.1 Heat pump system
Design of a sample heat pump system with monoblock tech-
nology:
1 Heat pump | Outdoor
unit
2 eBUS line
3 System control (op-
tional)
4 Control for the indoor
unit
5 Heat pump | Indoor unit
6 Heating circuit
3.2 Description of the product
The product is the outdoor unit of an air-to-water heat pump
with monoblock technology.
3.3 Functions of the heat pump
The heat pump has a closed refrigerant circuit in which refri-
gerant circulates.
Cyclic evaporation, compression, liquefaction and expansion
takes in heat energy from the surroundings and transfers it to
the building. In cooling mode, heat energy is extracted from
the building and released into the environment.
3.4 System separation and frost protection
With a system separation, an intermediate heat exchanger is
installed in the indoor unit. This separates the heating circuit
into a primary heating circuit (to the outdoor unit) and a sec-
ondary heating circuit (in the building).
If the primary heating circuit is filled with a water/frost protec-
tion mixture (brine fluid), the outdoor unit is then protected
against freezing, even if this is electrically switched off or in
the case of a power cut.
3.5 Product design
1 Air inlet grille
2 Data plate
3 Air outlet grille
3.6 Data plate and serial number
The data plate is located on the right-hand side of the pro-
duct's exterior.
The data plate includes the nomenclature and the serial
number.
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