Notes on the documentation 2
0020297937_01 aroTHERM plus Installation and maintenance instructions
111
2
Notes on the documentation
2.1
Documents
▶
Always observe all the operating and installation instruc-
tions included with the system components.
▶
Pass these instructions and all other applicable docu-
ments on to the end user.
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
2.3
Further information
▶
Scan the displayed code using your smartphone in order
to view further information about the installation.
◁
You are guided to installation videos.
3
Product description
3.1
Heat pump system
Design of a sample heat pump system with monoblock tech-
nology:
1
2
4
3
5
6
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.
In heating mode, cyclic evaporation, compression, liquefac-
tion and expansion take in heat energy from the surround-
ings and transfer it to the building. In cooling mode, heat
energy is extracted from the building and released into the
environment.
3.3.1
Operating principle, heating mode
6
5
4
3
1
2
1
Evaporator (heat ex-
changer)
2
4-port diverter valve
3
Fan
4
Compressor
5
Expansion valve
6
Condenser (heat ex-
changer)
3.3.2
Operating principle, cooling mode
Validity:
Product with cooling mode
6
5
4
3
1
2
1
Condenser (heat ex-
changer)
2
4-port diverter valve
3
Fan
4
Compressor
5
Expansion valve
6
Evaporator (heat ex-
changer)
