Notes On The Documentation; Validity Of The Instructions; Further Information; Product Description - Vaillant aroTHERM VWL 35/5 AS 230V S2 Operating Instructions Manual

2

Notes on the documentation

▶
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.
2.1

Validity of the instructions

These instructions apply only to:
Product
VWL 35/5 AS 230V S2
VWL 55/5 AS 230V S2
VWL 75/5 AS 230V S2
VWL 105/5 AS 230V S2
VWL 105/5 AS S2
VWL 125/5 AS 230V S2
VWL 125/5 AS S2
2.2

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 typical heat pump system with split technology:
1 2
1 Outdoor unit
2 eBUS line
3 System control
0020257297_07 Installation and maintenance instructions
3
4
5
6
4 Control for the indoor
unit
5 Indoor unit
6 Refrigerant circuit
3.2

Cooling mode

Depending on the country, the product has the heating mode
or heating and cooling mode function.
Products that are delivered at the factory with no cooling
mode are labelled with "S2" in the nomenclature. For these
units, an optional accessory can be used to subsequently
activate the cooling mode.
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 in heating mode
2
1
3
5
1 Evaporator
2 4-port diverter valve
3 Fan
3.3.2 Operating principle in cooling mode
Validity: Product with cooling mode
2
1
3
5
1 Condenser
2 4-port diverter valve
3 Fan
3.3.3 Noise reduction mode
A noise reduction mode can be activated for the product.
In noise reduction mode, the product operates more quietly
than in normal operating mode. This is achieved using a
4
6
4 Compressor
5 Expansion valve
6 Condenser
4
6
4 Compressor
5 Expansion valve
6 Evaporator
51