Product Design - Vaillant aroTHERM plus VWL 35/6 A 230V S2 Operating Instructions Manual

3.4.3 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
limited compressor rotational speed and an adjusted fan
speed.
3.5

Product design

3.5.1 Unit
1
1 Air outlet grille
6
5 4
1 Evaporator
2 INSTALLER BOARD
PCB
3 HMU PCB
16
1
2
3
4 Compressor
5 INVERTER assembly
6 Fan
5
4
3
1 Temperature sensor at
the air inlet
2 Air inlet grille
3 Connection for heating
flow
3.5.2 Compressor assembly
12
11
10
9
8
7
6
1 Automatic air vent
2 Pressure sensor in the
heating circuit
3 Filter
4 Condenser
5 Heating pump
6 Pressure switch in the
high-pressure area
Installation and maintenance instructions 0020330791_00
1
2
4 Connection for heating
return
5 Cover for the electrical
connections
1
2
3
4
5
7 Maintenance connection
in the high-pressure
area
8 Compressor
9 Pressure sensor in the
high-pressure area
10 Maintenance connection
in the low-pressure area
11 Electronic expansion
valve
12 4-port diverter valve