Product Design - Vaillant aroTHERM plus Operating Instructions Manual

3 Product description
3.3.3 Noise reduction mode
A noise reduction mode can be activated for the product.
In noise reduction mode, the product is quieter than in nor-
mal operating mode, which is achieved by a limited com-
pressor speed and an adjusted fan speed.
3.4

Product design

1
1 Air outlet grille
3.4.1 Components, unit, front
6
5 4
1 Evaporator (heat ex-
changer)
2 INSTALLER BOARD
PCB
3 HMU PCB
112
1
2
3
4 Compressor
5 INVERTER assembly
6 Fan
Installation and maintenance instructions aroTHERM plus 0020297937_01
3.4.2 Components, unit, rear
5
4
3
1 Temperature sensor, at
the air inlet
2 Air inlet grille
3 Connection for heating
flow
3.4.3 Components, compressor
12
11
10
9
8
7
6
1 Automatic air vent
2 Pressure sensor, in the
heating circuit
3 Filter
4 Condenser (heat ex-
changer)
5 Heating pump
1
2
4 Connection for heating
return
5 Cover, electrical con-
nections
1
2
3
4
5
6 Pressure switch, in the
high-pressure area
7 Maintenance connec-
tion, in the high-pres-
sure area
8 Compressor, encapsu-
lated