Appendix
134
Installation and maintenance instructions aroTHERM plus 0020297937_01
Appendix
A
Functional diagram
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
11
1
Temperature sensor, at the air inlet
2
Filter
3
Electronic expansion valve
4
Pressure sensor
5
Maintenance connection, in the low-pressure area
6
Temperature sensor, in front of the compressor
7
4-port diverter valve
8
Temperature sensor, on the compressor
9
Maintenance connection, in the high-pressure area
10
Pressure sensor
11
Pressure switch
12
Heating pump
13
Temperature sensor, on the heating flow
14
Automatic air vent, in the heating circuit
15
Pressure sensor, in the heating circuit
16
Connection, heating return
17
Connection, heating flow
18
Flow rate sensor
19
Temperature sensor, on the heating return
20
Condenser (heat exchanger)
21
Temperature sensor, behind the condenser
22
Temperature sensor, behind the compressor
23
Compressor
24
Refrigerant separator
25
Refrigerant buffer
26
Filter/dryer
27
Temperature sensor, at the evaporator
28
Evaporator (heat exchanger)
29
Fan
