Vaillant aroTHERM plus - Notes on the Documentation 2; Documents; Validity of the Instructions; Further Information

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
65
43
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
65
43
1
2
1 Condenser (heat ex-
changer)
2 4-port diverter valve
3 Fan
4 Compressor
5 Expansion valve
6 Evaporator (heat ex-
changer)